阅读说明：本技术 一种抗菌羊绒纱线及其制备工艺 (Antibacterial cashmere yarn and preparation process thereof ) 是由 陈慧 薛惊理 张翼 金国标 薛正利 于 2021-09-22 设计创作，主要内容包括：本发明公开了一种抗菌羊绒纱线及其制备工艺；其步骤包括：工艺1：分别将抗菌涤纶长丝与羊绒浸入纱线用整理液中进行预处理；工艺2：将预处理后的抗菌涤纶长丝与羊绒按混纺比例进行混合,并进行和毛处理,和毛回潮率控制在22～24%,和完后闷仓处理；工艺3：将闷仓处理后的纤维进行梳毛,混合得到混合纤维；工艺4：将混合纤维经过粗纱机得到粗纱条干；工艺5：将粗纱条干经细纱机处理纺成细纱；工艺6：对混合细纱进行络筒、并线、倍捻。上述整理液中含有纱线用整理液中含有4',5,8-三羟基-3',6,7-三甲氧基黄酮；该抗菌羊绒纱线具有优良的抗菌性、耐热性、耐磨性以及具有较高的力学性能以及优良的性能指标。(The invention discloses an antibacterial cashmere yarn and a preparation process thereof; the method comprises the following steps: the process 1 comprises the following steps: respectively soaking the antibacterial polyester filaments and cashmere into finishing liquid for yarns for pretreatment; and (2) a process: mixing the pretreated antibacterial polyester filament yarns with cashmere according to a blending ratio, performing wool blending treatment, controlling the wool blending moisture regain at 22-24%, and performing storehouse closing treatment after the wool blending treatment; and (3) a process: carding the fiber subjected to the bin-closing treatment, and mixing to obtain mixed fiber; and (4) a process: the mixed fiber is processed by a roving frame to obtain roving yarn levelness; and (5) a process: processing the roving yarn by a spinning frame to spin a spun yarn; and (6) a process: and (4) spooling, doubling and double twisting the mixed spun yarn. The finishing liquid for the yarn contains 4',5, 8-trihydroxy-3', 6, 7-trimethoxy flavone; the antibacterial cashmere yarn has excellent antibacterial property, heat resistance, wear resistance, higher mechanical property and excellent performance indexes.)

1. An antibacterial cashmere yarn comprises antibacterial polyester filaments and cashmere; the physical performance indexes of the antibacterial cashmere yarn are as follows: the single yarn strength is 140-250 cN; the elongation at break is 45-65%; the yarn evenness CV value is 13.5-15.5%; the details are 1-5 pieces/hectometer; the number of the nubs is 1-5/hectometer; the cotton knots are 8-16/hectometer.

2. An antimicrobial cashmere yarn according to claim 1, characterized in that: the blending ratio of the antibacterial polyester filament yarns to the cashmere is 50-80: 20-30.

3. An antimicrobial cashmere yarn according to claim 1, characterized in that: the fineness of the antibacterial polyester filament yarn is 1.5-2.0 dtex, and the average length of the antibacterial polyester filament yarn is 50-70 mm.

4. A method of making the antimicrobial cashmere yarn of claim 1 comprising the steps of:

the process 1 comprises the following steps: respectively soaking the antibacterial polyester filaments and cashmere into finishing liquid for yarns for pretreatment;

and (2) a process: mixing the pretreated antibacterial polyester filament yarns with cashmere according to a blending ratio, performing wool blending treatment, controlling the wool blending moisture regain at 22-24%, and performing storehouse closing treatment after the wool blending treatment;

and (3) a process: carding the fiber subjected to the bin-closing treatment, and mixing to obtain mixed fiber;

and (4) a process: the mixed fiber is processed by a roving frame to obtain roving levelness with different twists and strengths;

and (5) a process: processing the roving yarn by a spinning frame to spin a spun yarn;

and (6) a process: and performing spooling, doubling and two-for-one twisting on the mixed spun yarn.

5. The method for preparing antibacterial cashmere yarn according to claim 4, characterized in that: the pretreatment steps of the antibacterial polyester filament yarns and cashmere are as follows: and respectively carrying out water bath treatment on the antibacterial polyester filaments and the cashmere, then respectively soaking the antibacterial polyester filaments and the cashmere into finishing liquid for yarns, carrying out ultrasonic treatment for 30-50 min, and drying to obtain the pretreated antibacterial polyester filaments and cashmere.

6. The method for preparing antibacterial cashmere yarn according to claim 5, characterized in that: the bath ratio of the antibacterial polyester filament yarns to the cashmere to the finishing liquid for the yarns is 1: 20-30.

7. The method for preparing antibacterial cashmere yarn according to claim 4, characterized in that: the preparation method of the finishing liquid for the yarns comprises the following steps: putting a hydrochloric acid solution and a silane coupling agent into deionized water, stirring and mixing uniformly, and heating for reaction; and then adding polyethylene glycol, 4',5, 8-trihydroxy-3', 6, 7-trimethoxy flavone and linoleic acid diethanolamide, and continuously stirring for reaction to obtain the finishing liquid for the yarns.

8. The method for preparing antibacterial cashmere yarn according to claim 7, characterized in that: according to parts by weight, in the finishing liquid for the yarns, 0.2-0.5 part of hydrochloric acid solution, 0.8-1.5 parts of silane coupling agent, 100-150 parts of deionized water, 0.15-0.45 part of polyethylene glycol, 0.25-0.55 part of 4',5, 8-trihydroxy-3', 6, 7-trimethoxy flavone and 0.1-0.3 part of linoleic acid diethanolamide are added.

9. Use of the finishing liquor for yarns as claimed in claim 4 for improving the mechanical properties of antibacterial cashmere yarns.

10. Use of the antibacterial cashmere yarn according to claim 1 in health and/or medical textile fuchsin.

Technical Field

The invention belongs to the technical field of spinning, and particularly relates to an antibacterial cashmere yarn and a preparation process thereof.

Background

Practical studies of antibacterial fibers have been conducted in developed countries as early as 60 s in the 20 th century, and after 80 s, antibacterial fibers have been widely used in developed countries represented by japan and the usa. The industrialized research of the antibacterial fiber in China is started later relative to developed countries, and the antibacterial finishing agent is mainly applied in the early 90 th year period; organic additive type antibacterial fibers began to appear after 1995; inorganic antimicrobial fibers began to enter the market after 1997; the nano material is applied to the antibacterial fiber after 2000 years.

The antibacterial technology of textiles mainly comprises two types, one type is antibacterial after finishing, and the other type is antibacterial blended spinning. In the past, post-finishing technology is mostly adopted, or organic matters such as quaternary ammonium salt and organic silicon are added into a spinning oil agent, or the spinning oil agent is coated on the surface of fabric. The antibacterial components are gradually dropped off along with the washing of the fabric, the antibacterial durability is poor, and the antibacterial material and the fiber are not integrated and are not an antibacterial fiber in the true sense. The blending spinning is a physically modified spinning method, and the antibacterial material is introduced in the polymerization process, so that the antibacterial material is uniformly dispersed and combined in spinning slices, long and short filaments can be spun on common spinning equipment, and equipment does not need to be added, so that the blended spinning is a real antibacterial fiber. The prepared fiber can effectively inhibit bacterial reproduction and has permanent antibacterial property. The method for mixed spinning is environment-friendly and durable in antibiosis, and becomes the main direction of industry development.

Disclosure of Invention

The invention aims to provide the antibacterial cashmere yarn with excellent antibacterial property, heat resistance, wear resistance, higher mechanical property and excellent performance indexes.

The technical scheme adopted by the invention for realizing the purpose is as follows:

an antibacterial cashmere yarn comprises antibacterial polyester filaments and cashmere; the physical performance indexes of the antibacterial cashmere yarn are as follows: the single yarn strength is 140-250 cN; the elongation at break is 45-65%; the yarn evenness CV value is 13.5-15.5; the details are 1-5 pieces/hectometer; the number of the nubs is 1-5/hectometer; the cotton knots are 5-16/hectometer.

Further, in some embodiments of the invention, the blending ratio of the antibacterial polyester filament yarns to the cashmere yarns is 50-80: 20-30.

Further, in some embodiments of the present invention, the antibacterial polyester filament yarn has a fineness of 1.5 to 2.0dtex and an average length of 50 to 70 mm.

The invention also discloses a preparation method of the antibacterial cashmere yarn, which comprises the following steps:

the process 1 comprises the following steps: respectively soaking the antibacterial polyester filaments and cashmere into finishing liquid for yarns for pretreatment;

and (2) a process: mixing the pretreated antibacterial polyester filament yarns with cashmere according to a blending ratio, performing wool blending treatment, controlling the wool blending moisture regain at 22-24%, and performing storehouse closing treatment after the wool blending treatment;

and (3) a process: carding the fiber subjected to the bin-closing treatment, and mixing to obtain mixed fiber;

and (4) a process: the mixed fiber is processed by a roving frame to obtain roving levelness with different twists and strengths;

and (5) a process: processing the roving yarn by a spinning frame to spin a spun yarn;

and (6) a process: and (4) spooling, doubling and double twisting the mixed spun yarn.

Further, in some embodiments of the present invention, the pretreatment step of the antibacterial polyester filament yarn and cashmere is: and respectively carrying out water bath treatment on the antibacterial polyester filaments and the cashmere, then respectively soaking the antibacterial polyester filaments and the cashmere into finishing liquid for yarns, carrying out ultrasonic treatment for 30-50 min, and drying to obtain the pretreated antibacterial polyester filaments and cashmere.

Further, in some embodiments of the invention, the water bath treatment temperature of the antibacterial polyester filament and cashmere is 80-90 ℃, and the treatment time is 0.5-1 h.

Further, in some embodiments of the invention, the bath ratio of the antibacterial polyester filament yarns to the cashmere respectively to the finishing liquid for the yarns is 1: 20-30.

Further, in some embodiments of the present invention, a method of preparing a finishing liquor for yarns comprises: putting a hydrochloric acid solution and a silane coupling agent into deionized water, stirring and mixing uniformly, and heating for reaction; then adding polyethylene glycol, 4',5, 8-trihydroxy-3', 6, 7-trimethoxy flavone and linoleic acid diethanolamide, and continuously stirring for reaction to obtain a finishing liquid.

According to the invention, the silane coupling agent, the polyethylene glycol, the 4',5, 8-trihydroxy-3', 6, 7-trimethoxy flavone and the linoleic acid diethanolamide are added into the finishing liquid, the antibacterial polyester filaments and the cashmere are treated through the interaction of all the components, and the antibacterial polyester filaments and the cashmere are blended to obtain the antibacterial cashmere yarn, so that the finishing liquid improves the mechanical property of the antibacterial cashmere yarn, and the antibacterial cashmere yarn has higher single yarn breaking strength and breaking elongation and excellent performance indexes (the CV value, the detail, the slub and the nep are lower), namely the antibacterial cashmere yarn is more uniform; in addition, the antibacterial cashmere yarn has better wear resistance and antibacterial property; meanwhile, the composite material has excellent heat resistance and good thermal stability, and can be used below 250 ℃.

Further, in some embodiments of the invention, in the finishing liquid for the yarn, the hydrochloric acid solution is 0.2 to 0.5 part, the silane coupling agent is 0.8 to 1.5 parts, the deionized water is 100 to 150 parts, the polyethylene glycol is 0.15 to 0.45 part, the 4',5, 8-trihydroxy-3', 6, 7-trimethoxy flavone is 0.25 to 0.55 part, and the linoleic acid diethanolamide is 0.1 to 0.3 part by weight.

Further, in some embodiments of the present invention, the concentration of the hydrochloric acid solution is 0.1-0.25 mol/L.

The invention also discloses application of the finishing liquid for the yarn in improving the mechanical property of the antibacterial cashmere yarn.

The invention also discloses the application of the antibacterial cashmere yarn in health care and/or medical textiles.

In order to further improve the mechanical property, antibacterial property and heat resistance of the antibacterial cashmere yarn and enable the antibacterial cashmere yarn to have excellent antistatic property, the preferable measures adopted also comprise: 0.15-0.25 weight part of quercetin-3-O-neohesperidin is added into the finishing liquid, and further interacts with other components in the finishing liquid, then the antibacterial polyester filaments and cashmere are treated, and the antibacterial polyester filaments and the cashmere are blended to obtain the antibacterial cashmere yarn, so that the mechanical property, the antibacterial property and the heat resistance of the antibacterial cashmere yarn are further improved, and meanwhile, the water absorption of the antibacterial cashmere yarn is improved, and the antibacterial cashmere yarn has excellent antistatic property.

According to the invention, the silane coupling agent, the polyethylene glycol, the 4',5, 8-trihydroxy-3', 6, 7-trimethoxy flavone and the linoleic acid diethanolamide are added into the finishing liquid, the antibacterial polyester filaments and the cashmere are treated through the interaction of the components, and the antibacterial cashmere yarns are obtained by blending the antibacterial polyester filaments and the cashmere, so that the antibacterial cashmere yarns have the following beneficial effects: the finishing liquid improves the mechanical property of the antibacterial cashmere yarn, so that the antibacterial cashmere yarn has higher single yarn breaking strength and elongation at break and lower CV value, namely the antibacterial cashmere yarn is more uniform; in addition, the antibacterial cashmere yarn has better wear resistance and antibacterial property; meanwhile, the composite material has excellent heat resistance and good thermal stability, and can be used below 250 ℃. Therefore, the antibacterial cashmere yarn has excellent antibacterial property, heat resistance and wear resistance, and has higher mechanical property and excellent performance indexes.

Drawings

FIG. 1 is an SEM photograph of an antibacterial cashmere yarn of example 7;

FIG. 2 is a half-life of an antimicrobial cashmere yarn;

FIG. 3 is the diameter of the zone of inhibition of the antibacterial cashmere yarn for E.coli and Staphylococcus aureus;

FIG. 4 is a weight loss ratio of the antibacterial cashmere yarn;

fig. 5 is a thermogravimetric curve of the antibacterial cashmere yarn.

Detailed Description

The technical solution of the present invention is further described in detail below with reference to the following detailed description and the accompanying drawings:

still further, in some embodiments of the present invention, a method of preparing a finishing liquor for yarns, comprises: according to parts by weight, 0.2-0.5 part of hydrochloric acid solution with the concentration of 0.1-0.25 mol/L and 0.8-1.5 parts of silane coupling agent are placed in 100-150 parts of deionized water to be stirred and mixed uniformly, and the temperature is raised to 65-85 ℃ for reaction for 2-4 hours; and then adding 0.15-0.45 part of polyethylene glycol, 0.25-0.55 part of 4',5, 8-trihydroxy-3', 6, 7-trimethoxy flavone and 0.1-0.3 part of linoleic acid diethanolamide, continuously stirring and reacting for 30-60 min at the temperature, and cooling to room temperature to obtain the finishing liquid.

Still further, in some embodiments of the invention, the antimicrobial polyester filaments are treated prior to blending, comprising:

s1 sorting: manually sorting the antibacterial polyester filaments according to the colors of a dark color system, a red color system and a light color system to obtain polyester filaments of various color major systems;

s2 opening: cutting various polyester filaments to the length of 5-10 cm, carding the cut filaments into a loose fiber state by using a JLW2005 type pre-carding machine, controlling the feeding amount to be 8-10 kg/H, and humidifying on a machine to be 17-21% to obtain opened filaments;

s3 pile combination: and (3) combining the loosened filaments by using an A186F cover plate carding machine, wherein the moisture regain of the upper machine is 21-23%, and the moisture regain of the lower machine is 16-19%.

Still further, in some embodiments of the invention, the antimicrobial polyester filaments are treated prior to blending, comprising:

s1 sorting: manually sorting the antibacterial polyester filaments according to the colors of a dark color system, a red color system and a light color system to obtain polyester filaments of various color major systems;

s2 opening: cutting various polyester filaments to the length of 8cm, carding the cut filaments into a loose fiber state by using a JLW2005 type pre-carding machine, controlling the feeding amount at 8.5kg/H, and performing on-machine moisture regain at 20% to obtain opened filaments;

s3 pile combination: the opened filaments were combined with an A186F flat card, with the upper machine at 22% and the lower machine at 17%.

Still further, in some embodiments of the present invention, a method for preparing an antibacterial cashmere yarn includes the steps of:

the process 1 comprises the following steps: respectively soaking the antibacterial polyester filaments and cashmere into finishing liquid for yarns for pretreatment;

and (2) a process: mixing the pretreated antibacterial polyester filament yarns with cashmere according to a blending ratio, performing wool blending treatment, controlling the wool blending moisture regain at 22-24%, and performing storehouse closing treatment after the wool blending treatment;

and (3) a process: carding the fibers subjected to the bin-closing treatment, carding and straightening the fibers of the two raw materials, wherein a carding machine adopts a four-cylinder single-gap bridge form from a chest cylinder to a D section, the spacing between the cylinder of the A section and a working roller is 0.5-0.6 mm, and the spacing between the cylinder of the A section and a doffer is 0.35-0.55 mm; the spacing between the section A cylinder and the working roller is 0.5-0.6 mm, the speed ratio is 180-190/2.5, and the spacing between the section A cylinder and the doffer is 0.35-0.55 mm; the distance between the cylinder of the section B and the working roll is 0.5-0.6 mm, the speed ratio is 350-365/2.5, the distance between the cylinder of the section B and the doffer is 0.35-0.55 mm, and the speed ratio is 355-365/17; the distance between the cylinder at the C section and the working roller is 0.25-0.45 mm, the speed ratio is 350-365/2.5, the distance between the cylinder at the C section and the doffer is 0.2-0.4 mm, and the speed ratio is 355-365/21; the distance between the section D cylinder and the working roll is 0.25-0.35 mm, the speed ratio is 380-395/2.5, the distance between the section D cylinder and the doffer is 0.15-0.3 mm, and the speed ratio is 385-395/21; specifically, the method comprises the steps of taking a pioneer cloth strip as a standard for adjustment, amplifying the speed ratio of a wind wheel and a cylinder to 1.25-1.75, and mixing to obtain mixed fibers;

and (4) a process: the mixed fiber is processed by a roving frame to obtain roving levelness with different twists and strengths;

and (5) a process: processing a roving strip by a ring spinning frame to spin a spun yarn, wherein the drafting of the spun yarn is controlled to be 1.2-1.4, the number of the spun yarn is 24-28 Nm, the twist of the spun yarn is 430-460T/M, the twist direction is Z, and the spindle speed is 6500-7000 rpm;

and (6) a process: spooling the mixed spun yarn by using a Japan village MURATEC spooling machine, wherein the spooling speed is 500-600 m/min, the yarn clearing channel is enlarged, the nep parameter is adjusted to 330-360%, the short and thick parts are 220-240%, and the length is 4-5 cm; then doubling and twisting for two times, wherein a Japan village MURATEC doubling machine is adopted, the doubling speed is 550-650 m/min, and the fixed length is 13000-13500 m; the double-twisting method adopts a Japan village MURATEC double-twisting machine, the twist of double yarns in the double-twisting is 200-230T/M, the twisting direction is S, the speed is 6500-7000 rpm, and the double-twisting machine is adjusted at any time according to the broken end condition.

Example 1

A preparation method of finishing liquor for yarns comprises the following steps: according to parts by weight, 0.25 part of hydrochloric acid solution with the concentration of 0.1mol/L and 0.8 part of silane coupling agent are put into 100 parts of deionized water to be stirred and mixed evenly, and the temperature is raised to 70 ℃ for reaction for 3 hours; then adding 0.15 part of polyethylene glycol, 0.25 part of 4',5, 8-trihydroxy-3', 6, 7-trimethoxy flavone and 0.15 part of linoleic acid diethanolamide, continuously stirring and reacting for 30min at the temperature, and cooling to room temperature to obtain finishing liquid.

Example 2

A preparation method of finishing liquor for yarns comprises the following steps: according to parts by weight, 0.35 part of hydrochloric acid solution with the concentration of 0.1mol/L and 1.2 parts of silane coupling agent are placed in 120 parts of deionized water to be stirred and mixed uniformly, and the temperature is raised to 75 ℃ to react for 3 hours; then adding 0.3 part of polyethylene glycol, 0.35 part of 4',5, 8-trihydroxy-3', 6, 7-trimethoxy flavone and 0.2 part of linoleic acid diethanolamide, continuously stirring and reacting for 50min at the temperature, and cooling to room temperature to obtain finishing liquid.

Example 3

A preparation method of finishing liquor for yarns comprises the following steps: according to parts by weight, 0.5 part of hydrochloric acid solution with the concentration of 0.1mol/L and 1.5 parts of silane coupling agent are placed in 150 parts of deionized water to be stirred and mixed uniformly, and the temperature is raised to 85 ℃ for reaction for 4 hours; then adding 0.45 part of polyethylene glycol, 0.55 part of 4',5, 8-trihydroxy-3', 6, 7-trimethoxy flavone and 0.3 part of linoleic acid diethanolamide, continuously stirring and reacting for 60min at the temperature, and cooling to room temperature to obtain finishing liquid.

Example 4

A preparation method of finishing liquor for yarns comprises the following steps: according to parts by weight, 0.35 part of hydrochloric acid solution with the concentration of 0.1mol/L and 1.2 parts of silane coupling agent are placed in 120 parts of deionized water to be stirred and mixed uniformly, and the temperature is raised to 75 ℃ to react for 3 hours; then adding 0.3 part of polyethylene glycol, 0.35 part of 4',5, 8-trihydroxy-3', 6, 7-trimethoxy flavone, 0.2 part of linoleic acid diethanolamide and 0.15 part of quercetin-3-O-neohesperidin, continuously stirring and reacting for 50min at the temperature, and cooling to room temperature to obtain a finishing liquid.

Example 5

A preparation method of finishing liquor for yarns comprises the following steps: according to parts by weight, 0.35 part of hydrochloric acid solution with the concentration of 0.1mol/L and 1.2 parts of silane coupling agent are placed in 120 parts of deionized water to be stirred and mixed uniformly, and the temperature is raised to 75 ℃ to react for 3 hours; then adding 0.3 part of polyethylene glycol, 0.35 part of 4',5, 8-trihydroxy-3', 6, 7-trimethoxy flavone, 0.2 part of linoleic acid diethanolamide and 0.25 part of quercetin-3-O-neohesperidin, continuously stirring and reacting for 50min at the temperature, and cooling to room temperature to obtain a finishing liquid.

Example 6

A preparation method of antibacterial cashmere yarns comprises the following steps:

the process 1 comprises the following steps: respectively treating the antibacterial polyester filament yarns and the cashmere in a water bath at 85 ℃ for 0.5h, drying, then respectively soaking the antibacterial polyester filament yarns and the cashmere in the finishing liquid for the yarns in the embodiment 1 for ultrasonic treatment for 30min for pretreatment, wherein the bath ratio of the antibacterial polyester filament yarns to the finishing liquid for the yarns is 1:25, and drying to respectively obtain the pretreated antibacterial polyester filament yarns and the pretreated cashmere;

and (2) a process: mixing the pretreated antibacterial polyester filament yarns with cashmere according to a blending ratio of 70:30, performing wool blending treatment, controlling the moisture regain of the wool to be 22.5%, and performing warehouse closing treatment after the wool blending treatment;

and (3) a process: carding the fibers subjected to the bin-closing treatment, carding and straightening the fibers of the two raw materials, wherein a carding machine adopts a four-cylinder single gap bridge form from a chest cylinder to a D section, wherein the spacing between the cylinder of the A section and a working roller is 0.55mm, and the spacing between the cylinder of the A section and a doffer is 0.35 mm; the spacing between the cylinder A and the working roll is 0.55mm, the speed ratio is 188/2.5, and the spacing between the cylinder A and the doffer is 0.45 mm; the distance between the cylinder B and the working roll is 0.55mm, the speed ratio is 360/2.5, the distance between the cylinder B and the doffer is 0.35mm, and the speed ratio is 365/17; the distance between the cylinder at the C section and the working roll is 0.25mm, the speed ratio is 365/2.5, the distance between the cylinder at the C section and the doffer is 0.25mm, and the speed ratio is 355/21; the distance between the cylinder and the working roller of the section D is 0.25mm, the speed ratio is 385/2.5, the distance between the cylinder and the doffer is 0.15mm, and the speed ratio is 385/21; specifically, the pioneer cloth strips are used as a standard for adjustment, the speed ratio of the wind wheel and the cylinder is amplified to 1.35, and mixed to obtain mixed fibers;

and (4) a process: the mixed fiber is processed by a roving frame to obtain roving levelness with different twists and strengths;

and (5) a process: processing the roving yarn trunk by a ring spinning frame to spin spun yarn, wherein the drafting of the spun yarn is controlled to be 1.25, the number of spun yarn is 26Nm, the twist of the spun yarn is 450T/M, the twisting direction is Z, and the spindle speed is 6500 rpm;

and (6) a process: spooling the mixed spun yarn by using a MuRATEC spooling machine in Japan, wherein the spooling speed is 550m/min, the yarn clearing channel is enlarged, the nep parameter is adjusted to 350%, the short and thick parts are 230%, and the length is 4.5 cm; then doubling and double twisting are carried out, a Japan village MURATEC doubling machine is adopted, the doubling speed is 550m/min, and the fixed length is 13200 m; a Japanese village MURATEC two-for-one twister is adopted, the twist of double yarns in the two-for-one twisting is 210T/M, the twisting direction is S, the speed is 6500rpm, and the twisting speed is adjusted at any time according to the broken end condition.

Example 7

A preparation method of antibacterial cashmere yarns comprises the following steps:

the process 1 comprises the following steps: respectively treating the antibacterial polyester filaments and the cashmere in a water bath at 80 ℃ for 1h, drying, then respectively soaking the antibacterial polyester filaments and the cashmere in the finishing liquid for the yarns in the embodiment 1 for ultrasonic treatment for 30min for pretreatment, wherein the bath ratio of the antibacterial polyester filaments to the cashmere to the finishing liquid for the yarns is 1:25, and drying to respectively obtain the pretreated antibacterial polyester filaments and the cashmere;

and (2) a process: mixing the pretreated antibacterial polyester filament yarns with cashmere according to a blending ratio of 50:50, performing wool blending treatment, controlling the moisture regain of the wool to be 22.5%, and performing warehouse closing treatment after the wool blending treatment;

and (3) a process: carding the fibers subjected to the bin-closing treatment, carding and straightening the fibers of the two raw materials, wherein a carding machine adopts a four-cylinder single gap bridge form from a chest cylinder to a D section, wherein the spacing between the cylinder of the A section and a working roller is 0.55mm, and the spacing between the cylinder of the A section and a doffer is 0.35 mm; the spacing between the cylinder A and the working roll is 0.55mm, the speed ratio is 188/2.5, and the spacing between the cylinder A and the doffer is 0.45 mm; the distance between the cylinder B and the working roll is 0.55mm, the speed ratio is 360/2.5, the distance between the cylinder B and the doffer is 0.35mm, and the speed ratio is 365/17; the distance between the cylinder at the C section and the working roll is 0.25mm, the speed ratio is 365/2.5, the distance between the cylinder at the C section and the doffer is 0.25mm, and the speed ratio is 355/21; the distance between the cylinder and the working roller of the section D is 0.25mm, the speed ratio is 385/2.5, the distance between the cylinder and the doffer is 0.15mm, and the speed ratio is 385/21; specifically, the pioneer cloth strips are used as a standard for adjustment, the speed ratio of the wind wheel and the cylinder is amplified to 1.35, and mixed to obtain mixed fibers;

and (4) a process: the mixed fiber is processed by a roving frame to obtain roving levelness with different twists and strengths;

and (5) a process: processing the roving yarn trunk by a ring spinning frame to spin spun yarn, wherein the drafting of the spun yarn is controlled to be 1.35, the count of the spun yarn is 26Nm, the twist of the spun yarn is 400T/M, the twist direction is Z, and the spindle speed is 6500 rpm;

and (6) a process: winding the mixed spun yarn by using a Japan village MURATEC winder, wherein the winding speed is 500m/min, a yarn clearing channel is enlarged, the nep parameter is adjusted to 350%, the short and thick yarn is 230%, and the length is 4.5 cm; then doubling and double twisting are carried out, wherein a Japan village MURATEC doubling machine is adopted, the doubling speed is 550m/min, and the fixed length is 13200 m; a Japanese village MURATEC two-for-one twister is adopted, the twist of double yarns in the two-for-one twisting is 210T/M, the twisting direction is S, the speed is 6800rpm, and the twisting speed is adjusted at any time according to the broken end condition.

Example 8

The preparation method of the antibacterial cashmere yarn is the same as the embodiment 7 except that the steps are as follows:

the process 1 comprises the following steps: respectively treating the antibacterial polyester filaments and the cashmere in a water bath at 80 ℃ for 1h, drying, then respectively soaking the antibacterial polyester filaments and the cashmere in the finishing liquid for the yarns in the embodiment 2 for ultrasonic treatment for 30min for pretreatment, wherein the bath ratio of the antibacterial polyester filaments to the cashmere to the finishing liquid for the yarns is 1:25, and drying to respectively obtain the pretreated antibacterial polyester filaments and the cashmere.

Example 9

The preparation method of the antibacterial cashmere yarn is the same as the embodiment 7 except that the steps are as follows:

the process 1 comprises the following steps: respectively treating the antibacterial polyester filaments and the cashmere in a water bath at 80 ℃ for 1h, drying, then respectively soaking the antibacterial polyester filaments and the cashmere in the finishing liquid for the yarns in the embodiment 3 for ultrasonic treatment for 30min for pretreatment, wherein the bath ratio of the antibacterial polyester filaments to the cashmere to the finishing liquid for the yarns is 1:25, and drying to respectively obtain the pretreated antibacterial polyester filaments and the cashmere.

Example 10

A method for preparing an antibacterial cashmere yarn, which is different from the method of example 7:

and (2) a process: mixing the pretreated antibacterial polyester filament yarn and cashmere according to a blending ratio of 80:20, performing wool blending treatment, controlling the moisture regain of the wool to be 22.5%, and performing warehouse closing treatment after the wool blending treatment.

Example 11

The preparation method of the antibacterial cashmere yarn is the same as the embodiment 7 except that the steps are as follows:

the process 1 comprises the following steps: respectively treating the antibacterial polyester filaments and the cashmere in a water bath at 80 ℃ for 1h, drying, then respectively soaking the antibacterial polyester filaments and the cashmere in the finishing liquid for the yarns in the embodiment 4 for ultrasonic treatment for 30min for pretreatment, wherein the bath ratio of the antibacterial polyester filaments to the cashmere to the finishing liquid for the yarns is 1:25, and drying to respectively obtain the pretreated antibacterial polyester filaments and the cashmere.

Example 12

The preparation method of the antibacterial cashmere yarn is the same as the embodiment 7 except that the steps are as follows:

the process 1 comprises the following steps: respectively treating the antibacterial polyester filaments and the cashmere in a water bath at 80 ℃ for 1h, drying, then respectively soaking the antibacterial polyester filaments and the cashmere in the finishing liquid for the yarns in the embodiment 5 for ultrasonic treatment for 30min for pretreatment, wherein the bath ratio of the antibacterial polyester filaments to the cashmere to the finishing liquid for the yarns is 1:25, and drying to respectively obtain the pretreated antibacterial polyester filaments and the cashmere.

Comparative example 1

A method of preparing a finishing liquor for yarns, which differs from example 2: 4',5, 8-trihydroxy-3', 6, 7-trimethoxy flavone is not added into the finishing liquid.

Comparative example 2

A method of preparing a finishing liquor for yarns, which differs from example 4: 4',5, 8-trihydroxy-3', 6, 7-trimethoxy flavone is not added into the finishing liquid.

Comparative example 3

The preparation method of the antibacterial cashmere yarn is the same as the embodiment 7 except that the steps are as follows:

the process 1 comprises the following steps: respectively treating the antibacterial polyester filament yarns and the cashmere in a water bath at 80 ℃ for 1h, drying, then respectively soaking the antibacterial polyester filament yarns and the cashmere in the finishing liquid for the yarns in the comparative example 1 for ultrasonic treatment for 30min for pretreatment, wherein the bath ratio of the antibacterial polyester filament yarns to the cashmere to the finishing liquid for the yarns is 1:25, and drying to respectively obtain the pretreated antibacterial polyester filament yarns and the cashmere.

Comparative example 4

The preparation method of the antibacterial cashmere yarn is the same as the embodiment 7 except that the steps are as follows:

the process 1 comprises the following steps: respectively treating the antibacterial polyester filament yarns and the cashmere in a water bath at 80 ℃ for 1h, drying, then respectively soaking the antibacterial polyester filament yarns and the cashmere in the finishing liquid for the yarns in the comparative example 2 for ultrasonic treatment for 30min for pretreatment, wherein the bath ratio of the antibacterial polyester filament yarns to the cashmere to the finishing liquid for the yarns is 1:25, and drying to respectively obtain the pretreated antibacterial polyester filament yarns and the cashmere.

Comparative example 5

The preparation method of the antibacterial cashmere yarn is the same as the embodiment 7 except that the steps are as follows:

the process 1 comprises the following steps: respectively processing the antibacterial polyester filaments and the cashmere in a water bath at 80 ℃ for 1h, and drying to respectively obtain the pretreated antibacterial polyester filaments and the cashmere.

Test example 1

1. The surface morphology of the antibacterial cashmere yarn of example 7 was observed using a dutch-type field emission scanning electron microscope, and the acceleration voltage was.

FIG. 1 is an SEM photograph of an antibacterial cashmere yarn of example 7. As can be seen from fig. 1, the surface of the antibacterial cashmere yarn is relatively smooth and the fibers are closely distributed.

Test example 2

1. Determination of mechanical properties of antibacterial cashmere yarns

Single yarn tenacity at break and elongation at break: GB/T3916-1997 determination of breaking strength and breaking elongation of single yarn of textile package yarn is adopted; the test parameters are: the clamping length is 500mm, the stretching speed is 450mm/min, the testing temperature is 23 +/-2 ℃, and the relative humidity is 63 +/-2%.

Single yarn evenness (CV), details, slubs, neps: GB/T3292.1-2008' method for testing uneven yarn evenness of textile: capacitance method (capacitance method); the test parameters are: the speed is 50m/min, the time is 1min, the experiment times are 5 times, and the average value is taken; the test temperature is 23 +/-2 ℃ and the relative humidity is 63 +/-2%.

TABLE 1 antibacterial cashmere yarn Performance index

As can be seen from Table 1, the single yarn breaking strength of the antibacterial cashmere yarns of examples 6 to 10 is not less than 150cN, the breaking elongation is higher than 45%, the CV value is lower than 16.5%, the detail is not higher than 5/hectometer, the slub is not higher than 5/hectometer, the cotton node is not higher than 16/hectometer, the single yarn breaking strength and the breaking elongation of the antibacterial cashmere yarns of comparative example 7 and comparative example 3 and comparative example 5 are higher than those of the antibacterial cashmere yarns of comparative example 7 and comparative example 5, the CV value, the detail, the slub and the cotton node are lower than those of the comparative example 3 and comparative example 5, which shows that the antibacterial cashmere filaments and cashmere are immersed into the finishing liquid containing 4',5, 8-trihydroxy-3', 6, 7-trimethoxy flavone for treatment and blended to obtain the antibacterial cashmere yarns, which improve the single yarn breaking strength and the breaking elongation of the antibacterial cashmere yarns, the CV value, the detail, the nubs and the cotton nubs are reduced, so that the performance index is better; comparing examples 7 with examples 11-12, and comparative examples 3 with comparative example 4, the single yarn breaking strength and elongation at break of the antibacterial cashmere yarn in examples 11-12 are higher than those in example 7, the CV value, the detail, the slub and the cotton node are lower than those in example 7, and the single yarn breaking strength and elongation at break of the antibacterial cashmere yarn in comparative example 4 are higher than those in comparative example 3, the CV value, the detail, the slub and the cotton node are lower than those in comparative example 3 or are the same as those in example 3, which shows that the addition of quercetin-3-O-neohesperidin to the finishing liquid further improves the single yarn breaking strength and elongation at break of the antibacterial cashmere yarn, and has excellent performance indexes, and the antibacterial cashmere yarn with excellent comprehensive performance is obtained.

2. Determination of antistatic property of antibacterial cashmere yarn

The test method adopts the evaluation part of textile electrostatic performance: electrostatic voltage half-life.

Fig. 2 shows the half-life of the antibacterial cashmere yarn. As can be seen from fig. 2, the half-life period of the antibacterial cashmere yarns of examples 6 to 10 is less than 1.5s, the half-life period of the antibacterial cashmere yarns of comparative example 7 is less than that of comparative example 3 and comparative example 5, and the half-life period of the antibacterial cashmere yarns of comparative example 7 is less than that of comparative example 3 and comparative example 5, which shows that the antibacterial cashmere yarns are obtained by immersing the antibacterial polyester filaments and cashmere into the finishing liquid containing 4',5, 8-trihydroxy-3', 6, 7-trimethoxy flavone for treatment and blending, and the half-life period of the antibacterial cashmere yarns is reduced, and the antistatic performance of the antibacterial cashmere yarns is improved; the half-life of the antibacterial cashmere yarns in examples 11 to 12 is lower than 0.55s, the half-life of the antibacterial cashmere yarns in comparative examples 7 and examples 11 to 12, the half-life of the antibacterial cashmere yarns in comparative examples 11 to 12 is lower than that of example 7, and the half-life of the antibacterial cashmere yarns in comparative example 4 is lower than that of comparative example 3, which shows that the addition of quercetin-3-O-neohesperidin in the finishing liquid has a synergistic effect with other components in the finishing liquid, and the antistatic performance of the antibacterial cashmere yarns is remarkably improved.

3. Determination of antibacterial property of antibacterial cashmere yarn

According to GB/T20944.1-2007 agar plate diffusion method of the first part, the diameter of the inhibition zone is measured by a digital vernier caliper, the width of 4 different directions is measured, the average value is taken as the width of the inhibition zone of the sample, and escherichia coli and staphylococcus aureus are selected as test strains.

FIG. 3 shows the diameter of the zone of inhibition of the antibacterial cashmere yarn for Escherichia coli and Staphylococcus aureus. As can be seen from FIG. 3, the diameters of inhibition zones of the antibacterial cashmere yarns in examples 6 to 10 on Escherichia coli are higher than 20mm, and the diameters of inhibition zones on Staphylococcus aureus are higher than 16 mm; comparing the example 7 with the comparative examples 3 and 5, and comparing the comparative example 7, wherein the diameters of the inhibition zones of the antibacterial cashmere yarns on escherichia coli and staphylococcus aureus are higher than those of the comparative examples 3 and 5, which shows that the antibacterial cashmere yarns are obtained by immersing the antibacterial polyester filaments and cashmere into the finishing liquid containing 4',5, 8-trihydroxy-3', 6, 7-trimethoxy flavone for treatment and blending, and the antibacterial cashmere yarns are improved in antibacterial performance; the diameters of inhibition zones of the antibacterial cashmere yarns in examples 11 to 12 on escherichia coli are higher than 31mm, the diameters of inhibition zones of the antibacterial cashmere yarns in examples 11 to 12 on staphylococcus aureus are higher than 28mm, the diameters of inhibition zones of the antibacterial cashmere yarns in examples 7 to 12 on escherichia coli and staphylococcus aureus are higher than example 7, and the diameters of inhibition zones of the antibacterial cashmere yarns in comparative example 4 on escherichia coli and staphylococcus aureus are higher than comparative example 3, which shows that quercetin-3-O-neohesperidin is added into the finishing liquid, so that the antibacterial performance of the antibacterial cashmere yarns is further improved.

4. Determination of wear resistance of antibacterial cashmere yarn

The wear resistance of single-side yarn is tested on a Y522 type disc type fabric wear resistance instrument, the wear resistance times are 100 times, the mass of the sample before and after wear is calculated, and then the weight loss rate (%) is calculated.

Fig. 4 shows the weight loss ratio of the antibacterial cashmere yarn. As can be seen from fig. 4, the weight loss ratio of the antibacterial cashmere yarns of examples 6 to 10 is lower than 0.9%, the weight loss ratio of the antibacterial cashmere yarns of comparative example 7 is lower than that of comparative example 3 and comparative example 5, and the weight loss ratio of the antibacterial cashmere yarns of comparative example 7 is lower than that of comparative example 3 and comparative example 5, which shows that the antibacterial cashmere yarns are obtained by immersing the antibacterial polyester filaments and cashmere into the finishing liquid containing 4',5, 8-trihydroxy-3', 6, 7-trimethoxy flavone for treatment and blending, and the abrasion resistance of the antibacterial cashmere yarns is improved; comparing example 7 with examples 11-12, and comparative example 3 with comparative example 4, the weight loss ratio of the antibacterial cashmere yarn in examples 11-12 is not obviously different from example 7, and the weight loss ratio of the antibacterial cashmere yarn in comparative example 4 is also not obviously different from comparative example 3, which shows that the addition of quercetin-3-O-neohesperidin in the finishing liquid has no obvious influence on the wear resistance of the antibacterial cashmere yarn.

5. Determination of heat resistance of antibacterial cashmere yarn

And testing the thermal weight loss performance of the yarn before and after treatment by using a Pyris TGA type thermogravimetric analyzer, wherein the heating rate is 10 ℃/min under the condition of nitrogen protection.

Fig. 5 is a thermogravimetric curve of the antibacterial cashmere yarn. Curves a, b, c, d, e are example 11, example 7, comparative example 4, comparative example 3 and comparative example 5, respectively; as can be seen from FIG. 5, examples 7 and 11 have better thermal stability; comparing example 7 with comparative example 3 and comparative example 5, the initial decomposition temperature of the antibacterial cashmere yarn in example 7 is lower than that of comparative example 3 and comparative example 5, which shows that the antibacterial cashmere yarn is obtained by immersing the antibacterial polyester filament yarn and cashmere into the finishing liquid containing 4',5, 8-trihydroxy-3', 6, 7-trimethoxy flavone for treatment and blending, and the thermal stability of the antibacterial cashmere yarn is improved; comparing example 7 with example 11, and comparing example 3 with comparative example 4, the heat stability of the antibacterial cashmere yarn of example 11 is better than that of example 7, and the heat stability of the antibacterial cashmere yarn of comparative example 4 is better than that of comparative example 3, which shows that the addition of quercetin-3-O-neohesperidin to the finishing liquid further improves the heat resistance of the antibacterial cashmere yarn.

Conventional operations in the operation steps of the present invention are well known to those skilled in the art and will not be described herein.

The above embodiments are merely illustrative, and not restrictive, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention, and the protection scope of the present invention should be defined by the claims.