阅读说明：本技术 一种混纺织物的抗菌印染工艺 (Antibacterial printing and dyeing process for blended fabric ) 是由 任东华 李保加 于 2021-08-25 设计创作，主要内容包括：本发明公开了一种混纺织物的抗菌印染工艺,包括以下步骤：步骤1.将棉纤维进行改性处理,得到改性棉纤维；步骤2.将改性棉纤维和聚酯纤维混纺,得到第一纱线；步骤3.将改性棉纤维和聚氨基甲酸酯纤维混纺,得到第二纱线；步骤4.以第一纱线作为经线、第二纱线作为纬线织造形成混纺织物坯体；步骤5.将混纺织物使用染料浸染处理,得到混纺织物印染产物；步骤6.将混纺织物印染产物置于干燥室内干燥处理,得到混纺织物。本发明公开了一种混纺织物的抗菌印染工艺,其中在使用的材料上选择了舒适吸湿的棉纤维作为主料,聚酯纤维和聚氨酯甲酸酯纤维作为辅料,经过混纺和织造得到了手感舒适、吸湿抗菌、挺括抗皱以及色牢性好的面料。(The invention discloses an antibacterial printing and dyeing process of blended fabric, which comprises the following steps: step 1, performing modification treatment on cotton fibers to obtain modified cotton fibers; step 2, blending the modified cotton fiber and the polyester fiber to obtain a first yarn; step 3, blending the modified cotton fiber and the polyurethane fiber to obtain a second yarn; step 4, weaving the first yarns as warp yarns and the second yarns as weft yarns to form a blended fabric blank; step 5, dip-dyeing the blended fabric by using a dye to obtain a blended fabric printing and dyeing product; and 6, drying the blended fabric printing and dyeing product in a drying chamber to obtain the blended fabric. The invention discloses an antibacterial printing and dyeing process for blended fabrics, wherein comfortable and moisture-absorbing cotton fibers are selected as main materials from used materials, polyester fibers and polyurethane fibers are selected as auxiliary materials, and the blended fabrics are blended and woven to obtain the fabrics with comfortable hand feeling, moisture absorption, antibiosis, stiffness, crease resistance and good color fastness.)

1. An antibacterial printing and dyeing process of blended fabric is characterized by comprising the following steps:

step 1, performing modification treatment on cotton fibers to obtain modified cotton fibers;

step 2, blending the modified cotton fiber and the polyester fiber to obtain a first yarn;

step 3, blending the modified cotton fiber and the polyurethane fiber to obtain a second yarn;

step 4, weaving the first yarns as warp yarns and the second yarns as weft yarns to form a blended fabric blank;

step 5, dip-dyeing the blended fabric by using a dye to obtain a blended fabric printing and dyeing product;

step 6, placing the blended fabric printing and dyeing product in a drying chamber for drying treatment to obtain the blended fabric;

in the step 1, the step of modifying the cotton fiber comprises the following steps:

reacting nano boehmite with protocatechuic acid to obtain modified nano boehmite;

II, treating cotton fibers with o-phenylenediamine to obtain o-phenylenediamine/cotton fibers;

and III, combining the o-phenylenediamine/cotton fibers with the modified nano boehmite to obtain the modified cotton fibers.

2. The antibacterial printing and dyeing process of blended fabrics according to claim 1, wherein in the step 2, before blending, the modified cotton fibers need to be subjected to opening picking, carding, pre-drawing and combing treatment in sequence, and the polyester fibers need to be subjected to opening picking, carding and pre-drawing treatment in sequence.

3. The antibacterial printing and dyeing process of the blended fabric according to claim 1, wherein in the step 2, the mass ratio of the modified cotton fiber to the polyester fiber is 1-2: 1.

4. The antibacterial printing and dyeing process of the blended fabric according to claim 1, characterized in that in the step 2 and the step 3, the blending process sequentially comprises the following steps: roving, spinning and spooling, wherein the environment condition of blending is as follows: the temperature is 25-30 ℃, and the humidity is 55-70%.

5. The process of claim 4, wherein the roving is subjected to a roving process on a roving frame, the spinning is subjected to a spinning process on a spinning frame, and the winding is performed by using a winder to form the yarn into a twisted bobbin.

6. The antibacterial printing and dyeing process of the blended fabric according to claim 1, wherein in the step 3, the mass ratio of the modified cotton fiber to the polyurethane fiber is 1: 0.04-0.06.

7. The antibacterial printing and dyeing process of blended fabrics according to claim 1, characterized in that in the step 4, the weaving is to pass the warp and weft through the steps of warping, slashing, denting and weaving in sequence, and finally form a blended fabric blank.

8. The antibacterial printing and dyeing process of blended fabric according to claim 1, characterized in that in step 4, the woven form of the blended fabric blank is plain weave or twill weave.

9. The antibacterial printing and dyeing process of blended fabrics according to claim 1, characterized in that in the step 4, the weaving density of the warp and weft is as follows: the warp density is 80-90 pieces/cm, and the weft density is 70-80 pieces/cm.

10. The antibacterial printing and dyeing process of the blended fabric according to claim 1, wherein in the step 5, the concentration of the dye is 25-50 g/L, and the dye is one of aminostilbene disulfonic acid direct dye, 4.4 ' -diaminodiphenylurea direct dye, 4.4 ' -diaminobenzoyl aniline direct dye, 4.4 ' -diaminobenzenesulfonyl aniline direct dye and diaminoheterocyclic direct dye.

Technical Field

The invention relates to the field of textile printing and dyeing, in particular to an antibacterial printing and dyeing process for blended fabric.

Background

The polyester-cotton blended fabric not only highlights the comfort of cotton, but also keeps the style of polyester, has the characteristics of stiffness, smoothness, wear resistance and the like, and is deeply favored by consumers. However, the cotton component content in the polyester-cotton blended fabric is high, and although the cotton fiber has good wearability, once the cotton fiber absorbs water, water molecules are accumulated in the fiber, so that the fabric is easy to wet and difficult to dry, and bacteria are easy to breed, so that the health of a human body is influenced. Therefore, the antibacterial function of the polyester-cotton blended fabric is enhanced, and the antibacterial function has important significance. At present, antibacterial finishing agents (mainly silver ion and copper ion antibacterial finishing agents) are generally adopted in the market to finish fabrics to obtain antibacterial finishing effect, and the finishing of the antibacterial finishing agents has three defects: 1. the fabric is not washable, and loses antibacterial and bacteriostatic properties after being washed for many times; 2. the shedding of the metal ion salt has certain harm; 3. the antibacterial finishing agent has more pollution emission and poor environmental protection property in the using process and has certain influence on the environment.

Disclosure of Invention

Aiming at the problems of no washing fastness, potential harm to human bodies and poor environmental protection of the antibacterial finishing agent in the prior art, the invention aims to provide an antibacterial printing and dyeing process for blended fabrics.

The purpose of the invention is realized by adopting the following technical scheme:

the invention provides an antibacterial printing and dyeing process of blended fabric, which comprises the following steps:

step 1, performing modification treatment on cotton fibers to obtain modified cotton fibers;

step 2, blending the modified cotton fiber and the polyester fiber to obtain a first yarn;

step 3, blending the modified cotton fiber and the polyurethane fiber to obtain a second yarn;

step 4, weaving the first yarns as warp yarns and the second yarns as weft yarns to form a blended fabric blank;

step 5, dip-dyeing the blended fabric by using a dye to obtain a blended fabric printing and dyeing product;

and 6, drying the blended fabric printing and dyeing product in a drying chamber to obtain the blended fabric.

Preferably, in step 1, the step of modifying the cotton fiber comprises:

reacting nano boehmite with protocatechuic acid to obtain modified nano boehmite;

II, treating cotton fibers with o-phenylenediamine to obtain o-phenylenediamine/cotton fibers;

and III, combining the o-phenylenediamine/cotton fibers with the modified nano boehmite to obtain the modified cotton fibers.

Preferably, the process I specifically comprises the following steps:

weighing protocatechuic acid and N-methyl pyrrolidone, mixing, stirring until the protocatechuic acid and the N-methyl pyrrolidone are completely dissolved, adding nano boehmite, performing ultrasonic homogenization, dropwise adding concentrated sulfuric acid, heating to 140-150 ℃, performing condensation reaction for 8-12 hours, centrifuging to take a lower-layer solid, scraping the lower-layer solid onto a filtering device, washing the lower-layer solid to be neutral by using deionized water, and performing drying treatment to obtain modified nano boehmite; wherein the mass ratio of the protocatechuic acid to the nano boehmite to the N-methyl pyrrolidone is 1: 2-4: 10-20, the concentrated sulfuric acid is sulfuric acid with the mass concentration of 98%, and the adding amount of the concentrated sulfuric acid is 1% -2% of the mass of the protocatechuic acid.

Preferably, the process II comprises the following steps:

s1, weighing cotton fibers, mixing the cotton fibers with a sodium hydroxide solution with the mass fraction of 10%, heating to 45-55 ℃, soaking for 2-4 hours, filtering to remove liquid, and washing with deionized water to be neutral to obtain activated cotton fibers; wherein the mass ratio of the cotton fibers to the sodium hydroxide solution is 1: 6-10;

s2, weighing o-phenylenediamine and mixing with deionized water, heating to 70-80 ℃, stirring until the o-phenylenediamine and the deionized water are completely dissolved, adding activated cotton fibers, keeping the temperature, continuously stirring for 8-10 hours, cooling, filtering to obtain a solid, washing with hot water for at least three times, and drying to obtain o-phenylenediamine/cotton fibers; wherein the mass ratio of the o-phenylenediamine to the activated cotton fiber to the deionized water is 1: 3-5: 10-20.

Preferably, the process iii is specifically:

mixing o-phenylenediamine/cotton fibers and modified nano boehmite into N-methyl pyrrolidone, fully dispersing, pouring into a reaction kettle with tetrafluoroethylene as a lining, replacing air in the reaction kettle with oxygen, placing the reaction kettle at the temperature of 120-140 ℃ for reaction for 24-48 hours, cooling, filtering, collecting a solid product, sequentially washing the solid product with acid liquor and alkali liquor for three times respectively, and then washing with deionized water to be neutral to obtain modified cotton fibers; wherein the mass ratio of the o-phenylenediamine/cotton fibers to the modified nano boehmite to the N-methyl pyrrolidone is 1: 0.2-0.4: 10-20.

Preferably, the acid solution is a hydrochloric acid solution with the concentration of 0.1mol/L, and the alkali solution is a sodium hydroxide solution with the concentration of 0.1 mol/L.

Preferably, in the step 2, before blending, the modified cotton fiber needs to be subjected to opening picking, carding, pre-drawing and combing treatment in sequence, and the polyester fiber needs to be subjected to opening picking, carding and pre-drawing treatment in sequence.

Preferably, in the step 2, the mass ratio of the modified cotton fibers to the polyester fibers is 1-2: 1.

Preferably, in the step 2 and the step 3, the blending process sequentially comprises: roving, spinning and spooling, wherein the environment condition of blending is as follows: the temperature is 25-30 ℃, and the humidity is 55-70%.

Preferably, the roving is a roving process performed on a roving machine, the spinning is a spinning process performed on a spinning machine, and the winding is a twisting bobbin formed by the yarn using a winder.

Preferably, in the step 3, before blending, the modified cotton fiber needs to be subjected to opening picking, carding, pre-drawing and combing treatment in sequence, and the polyurethane fiber needs to be subjected to opening picking, carding and pre-drawing treatment in sequence.

Preferably, in the step 3, the mass ratio of the modified cotton fibers to the polyurethane fibers is 1: 0.04-0.06.

Preferably, in the step 4, the weaving is to sequentially carry out warping, slashing, denting and weaving on the warps and the wefts, and finally weave to form the blended fabric blank.

Preferably, in the step 4, the weaving form of the blended fabric blank is plain weave or twill weave.

Preferably, in the step 4, the weaving density of the warp and the weft is as follows: the warp density is 80-90 pieces/cm, and the weft density is 70-80 pieces/cm.

Preferably, in the step 5, the concentration of the dye is 25 to 50g/L, and the dye is one of aminostilbene disulfonic acid direct dye, 4.4 ' -diaminodiphenylurea direct dye, 4.4 ' -diaminobenzoyl aniline direct dye, 4.4 ' -diaminobenzenesulfonyl aniline direct dye and diaminoheterocyclic direct dye.

Preferably, in the step 6, the drying temperature is 60-120 ℃.

The invention has the beneficial effects that:

the invention discloses an antibacterial printing and dyeing process for blended fabrics, wherein comfortable and moisture-absorbing cotton fibers are selected as a main material and polyester fibers and polyurethane fibers are selected as auxiliary materials, in order to further enhance antibacterial property, the cotton fibers are subjected to antibacterial modification, and the fabric with comfortable hand feeling, air permeability, antibacterial property, stiffness, wrinkle resistance and good color fastness is obtained through blending and weaving.

The invention prepares the modified cotton fiber, and then obtains the blended fabric with washing resistance, strong antibacterial property and strong dyeing property under the condition of blending with the polyester fiber and the polyurethane fiber. The blended fabric abandons the traditional method of adding an antibacterial finishing agent for antibacterial treatment, and is directly improved on the fiber, so that the antibacterial effect can be kept more durable, and the improved fiber is easier to color. In addition, compared with the conventional blended cotton fabric, the prepared blended fabric has better stiffness and smoothness.

The modified cotton fiber prepared by the invention is prepared by grafting, adsorbing and modifying nano boehmite on the basis of the cotton fiber. The reaction principle of the preparation process may be: firstly, condensation reaction of protocatechuic acid and nano-boehmite is carried out, hydroxyl in the nano-boehmite is combined with carboxyl in the protocatechuic acid, and finally modified nano-boehmite is obtained; secondly, the cotton fibers are sequentially subjected to activation treatment and o-phenylenediamine treatment before reaction with the modified nano boehmite, wherein the activation treatment is to use alkali liquor for activation to reduce the crystallinity in the cotton fibers, and then the o-phenylenediamine is used for grafting to obtain the cotton fibers with a large amount of o-phenylenediamine grafted on the surfaces; and thirdly, the o-phenylenediamine/cotton fiber and the modified nano boehmite are subjected to a grafting reaction, the o-phenylenediamine in the cotton fiber and the protocatechuic acid in the modified nano boehmite are subjected to a combination reaction, and the bisamino group and the bisphenol hydroxyl group are combined to finally generate the phenazine compound, so that the nano boehmite and the cotton fiber are combined more stably, the phenazine compound has stronger antibacterial activity and is combined with a dye more easily, and the antibacterial property and the easy dyeability of the fiber material can be improved.

Detailed Description

For the purpose of more clearly illustrating the present invention and more clearly understanding the technical features, objects and advantages of the present invention, the technical solutions of the present invention will now be described in detail below, but are not to be construed as limiting the implementable scope of the present invention.

Boehmite (gamma-AlOOH) is a main component of bauxite, is an important chemical raw material, has a unique crystal structure, is widely applied to a plurality of fields such as catalysts and carriers, papermaking fillers, inorganic flame retardants and the like, can be used as a precursor to prepare aluminum oxide which is widely applied in the fields such as ceramics, electronics, adsorption, catalysis and the like, and has wide application prospect. At present, the preparation of inorganic nano-materials with specific morphology has become a hot point of research in the field of material science. Especially low dimensional nano materials, are receiving more and more attention due to their special physicochemical properties and wide application value. Boehmite belongs to an orthorhombic system and has a layered structure, oxygen ions are arranged at the vertexes of an octahedron in a cubic close packing manner in each single structural layer, aluminum ions are positioned in the center of the octahedron to form a double-layer structure, hydroxide radicals are positioned on the surface of the layered structure, and the layers are connected together through hydrogen bonds.

The invention is further described below with reference to the following examples.

Example 1

An antibacterial printing and dyeing process of blended fabric comprises the following steps:

step 1, performing modification treatment on cotton fibers to obtain modified cotton fibers;

step 2, subjecting the modified cotton fibers to opening picking, cotton carding, pre-drawing and combing treatment in sequence, subjecting the polyester fibers to opening picking, carding and pre-drawing treatment in sequence, and then subjecting the polyester fibers to roving, spinning and spooling treatment in sequence under the conditions that the temperature is 25-30 ℃ and the humidity is 55% -70% to obtain first yarns; wherein the mass ratio of the modified cotton fiber to the polyester fiber is 1.5: 1; the roving is to perform a roving process on a roving frame, the spinning is to perform a spinning process on a spinning frame, and the spooling is to make the yarn into a twisted bobbin by using a spooling machine;

step 3, subjecting the modified cotton fibers to opening picking, cotton carding, pre-drawing and combing treatment in sequence, subjecting the polyurethane fibers to opening picking, carding and pre-drawing treatment in sequence, and then subjecting the polyurethane fibers to roving, spinning and spooling treatment in sequence under the conditions that the temperature is 25-30 ℃ and the humidity is 55% -70% to obtain second yarns; the mass ratio of the modified cotton fibers to the polyurethane fibers is 1: 0.05;

step 4, taking the first yarns as warps and the second yarns as wefts, and sequentially performing warping, sizing, denting and weaving to finally weave to form a blended fabric blank; wherein the weaving form of the blended fabric blank is a plain weave; the weaving density of the warp and the weft is as follows: the warp density is 86 pieces/cm, and the weft density is 72 pieces/cm;

step 5, dip-dyeing the blended fabric by using a dye to obtain a blended fabric printing and dyeing product; wherein the concentration of the dye is 30g/L, and the dye is an aminostilbene disulfonic acid direct dye;

and 6, drying the blended fabric printing and dyeing product in a drying chamber at the temperature of 90 ℃ to obtain the blended fabric.

In the step 1, the step of modifying the cotton fiber comprises the following steps:

reacting nano boehmite with protocatechuic acid to obtain modified nano boehmite:

weighing protocatechuic acid and N-methyl pyrrolidone, mixing, stirring until the protocatechuic acid and the N-methyl pyrrolidone are completely dissolved, adding nano boehmite, performing ultrasonic homogenization, dropwise adding concentrated sulfuric acid, heating to 140-150 ℃, performing condensation reaction for 8-12 hours, centrifuging to take a lower-layer solid, scraping the lower-layer solid onto a filtering device, washing the lower-layer solid to be neutral by using deionized water, and performing drying treatment to obtain modified nano boehmite; wherein the mass ratio of the protocatechuic acid to the nano-boehmite to the N-methylpyrrolidone is 1:3:15, the concentrated sulfuric acid is sulfuric acid with the mass concentration of 98%, and the adding amount of the concentrated sulfuric acid is 1.5% of the mass of the protocatechuic acid.

Treating cotton fibers with o-phenylenediamine to obtain o-phenylenediamine/cotton fibers:

s1, weighing cotton fibers, mixing the cotton fibers with a sodium hydroxide solution with the mass fraction of 10%, heating to 45-55 ℃, soaking for 2-4 hours, filtering to remove liquid, and washing with deionized water to be neutral to obtain activated cotton fibers; wherein the mass ratio of the cotton fiber to the sodium hydroxide solution is 1: 8;

s2, weighing o-phenylenediamine and mixing with deionized water, heating to 70-80 ℃, stirring until the o-phenylenediamine and the deionized water are completely dissolved, adding activated cotton fibers, keeping the temperature, continuously stirring for 8-10 hours, cooling, filtering to obtain a solid, washing with hot water for at least three times, and drying to obtain o-phenylenediamine/cotton fibers; wherein the mass ratio of the o-phenylenediamine to the activated cotton fiber to the deionized water is 1:4: 15.

Combining o-phenylenediamine/cotton fibers with modified nano-boehmite to obtain modified cotton fibers:

mixing o-phenylenediamine/cotton fibers and modified nano boehmite into N-methyl pyrrolidone, fully dispersing, pouring into a reaction kettle with tetrafluoroethylene as a lining, replacing air in the reaction kettle with oxygen, placing the reaction kettle at 120-140 ℃ for reaction for 24-48 hours, cooling, filtering, collecting a solid product, sequentially washing the solid product with a hydrochloric acid solution with the concentration of 0.1mol/L and a sodium hydroxide solution with the concentration of 0.1mol/L for three times respectively, and then washing with deionized water to be neutral to obtain modified cotton fibers; wherein the mass ratio of the o-phenylenediamine/cotton fiber to the modified nano boehmite to the N-methyl pyrrolidone is 1:0.3: 15.

Example 2

An antibacterial printing and dyeing process of blended fabric comprises the following steps:

step 1, performing modification treatment on cotton fibers to obtain modified cotton fibers;

step 2, subjecting the modified cotton fibers to opening picking, cotton carding, pre-drawing and combing treatment in sequence, subjecting the polyester fibers to opening picking, carding and pre-drawing treatment in sequence, and then subjecting the polyester fibers to roving, spinning and spooling treatment in sequence under the conditions that the temperature is 25-30 ℃ and the humidity is 55% -70% to obtain first yarns; wherein the mass ratio of the modified cotton fiber to the polyester fiber is 1: 1; the roving is to perform a roving process on a roving frame, the spinning is to perform a spinning process on a spinning frame, and the spooling is to make the yarn into a twisted bobbin by using a spooling machine;

step 3, subjecting the modified cotton fibers to opening picking, cotton carding, pre-drawing and combing treatment in sequence, subjecting the polyurethane fibers to opening picking, carding and pre-drawing treatment in sequence, and then subjecting the polyurethane fibers to roving, spinning and spooling treatment in sequence under the conditions that the temperature is 25-30 ℃ and the humidity is 55% -70% to obtain second yarns; the mass ratio of the modified cotton fibers to the polyurethane fibers is 1: 0.04;

step 4, taking the first yarns as warps and the second yarns as wefts, and sequentially performing warping, sizing, denting and weaving to finally weave to form a blended fabric blank; wherein the weaving form of the blended fabric blank is a plain weave; the weaving density of the warp and the weft is as follows: the warp density is 80 pieces/cm, and the weft density is 70 pieces/cm;

step 5, dip-dyeing the blended fabric by using a dye to obtain a blended fabric printing and dyeing product; wherein the concentration of the dye is 25g/L, and the dye is 4.4' -diaminodiphenyl urea direct dye;

and 6, drying the blended fabric printing and dyeing product in a drying chamber at the temperature of 60 ℃ to obtain the blended fabric.

In the step 1, the step of modifying the cotton fiber comprises the following steps:

reacting nano boehmite with protocatechuic acid to obtain modified nano boehmite:

weighing protocatechuic acid and N-methyl pyrrolidone, mixing, stirring until the protocatechuic acid and the N-methyl pyrrolidone are completely dissolved, adding nano boehmite, performing ultrasonic homogenization, dropwise adding concentrated sulfuric acid, heating to 140-150 ℃, performing condensation reaction for 8-12 hours, centrifuging to take a lower-layer solid, scraping the lower-layer solid onto a filtering device, washing the lower-layer solid to be neutral by using deionized water, and performing drying treatment to obtain modified nano boehmite; wherein the mass ratio of the protocatechuic acid to the nano-boehmite to the N-methylpyrrolidone is 1:2:10, the concentrated sulfuric acid is sulfuric acid with the mass concentration of 98%, and the adding amount of the concentrated sulfuric acid is 1% of the mass of the protocatechuic acid.

Treating cotton fibers with o-phenylenediamine to obtain o-phenylenediamine/cotton fibers:

s1, weighing cotton fibers, mixing the cotton fibers with a sodium hydroxide solution with the mass fraction of 10%, heating to 45-55 ℃, soaking for 2-4 hours, filtering to remove liquid, and washing with deionized water to be neutral to obtain activated cotton fibers; wherein the mass ratio of the cotton fiber to the sodium hydroxide solution is 1: 6;

s2, weighing o-phenylenediamine and mixing with deionized water, heating to 70-80 ℃, stirring until the o-phenylenediamine and the deionized water are completely dissolved, adding activated cotton fibers, keeping the temperature, continuously stirring for 8-10 hours, cooling, filtering to obtain a solid, washing with hot water for at least three times, and drying to obtain o-phenylenediamine/cotton fibers; wherein the mass ratio of the o-phenylenediamine to the activated cotton fiber to the deionized water is 1:3: 10.

Combining o-phenylenediamine/cotton fibers with modified nano-boehmite to obtain modified cotton fibers:

mixing o-phenylenediamine/cotton fibers and modified nano boehmite into N-methyl pyrrolidone, fully dispersing, pouring into a reaction kettle with tetrafluoroethylene as a lining, replacing air in the reaction kettle with oxygen, placing the reaction kettle at 120-140 ℃ for reaction for 24-48 hours, cooling, filtering, collecting a solid product, sequentially washing the solid product with a hydrochloric acid solution with the concentration of 0.1mol/L and a sodium hydroxide solution with the concentration of 0.1mol/L for three times respectively, and then washing with deionized water to be neutral to obtain modified cotton fibers; wherein the mass ratio of the o-phenylenediamine/cotton fiber to the modified nano boehmite to the N-methyl pyrrolidone is 1:0.2: 10.

Example 3

An antibacterial printing and dyeing process of blended fabric comprises the following steps:

step 1, performing modification treatment on cotton fibers to obtain modified cotton fibers;

step 2, subjecting the modified cotton fibers to opening picking, cotton carding, pre-drawing and combing treatment in sequence, subjecting the polyester fibers to opening picking, carding and pre-drawing treatment in sequence, and then subjecting the polyester fibers to roving, spinning and spooling treatment in sequence under the conditions that the temperature is 25-30 ℃ and the humidity is 55% -70% to obtain first yarns; wherein the mass ratio of the modified cotton fiber to the polyester fiber is 2: 1; the roving is to perform a roving process on a roving frame, the spinning is to perform a spinning process on a spinning frame, and the spooling is to make the yarn into a twisted bobbin by using a spooling machine;

step 3, subjecting the modified cotton fibers to opening picking, cotton carding, pre-drawing and combing treatment in sequence, subjecting the polyurethane fibers to opening picking, carding and pre-drawing treatment in sequence, and then subjecting the polyurethane fibers to roving, spinning and spooling treatment in sequence under the conditions that the temperature is 25-30 ℃ and the humidity is 55% -70% to obtain second yarns; the mass ratio of the modified cotton fibers to the polyurethane fibers is 1: 0.06;

step 4, taking the first yarns as warps and the second yarns as wefts, and sequentially performing warping, sizing, denting and weaving to finally weave to form a blended fabric blank; wherein the weaving form of the blended fabric blank is twill; the weaving density of the warp and the weft is as follows: the warp density is 90 pieces/cm, and the weft density is 80 pieces/cm;

step 5, dip-dyeing the blended fabric by using a dye to obtain a blended fabric printing and dyeing product; wherein the concentration of the dye is 50g/L, and the dye is a diamino heterocyclic direct dye;

and 6, drying the blended fabric printing and dyeing product in a drying chamber at the temperature of 120 ℃ to obtain the blended fabric.

In the step 1, the step of modifying the cotton fiber comprises the following steps:

reacting nano boehmite with protocatechuic acid to obtain modified nano boehmite:

weighing protocatechuic acid and N-methyl pyrrolidone, mixing, stirring until the protocatechuic acid and the N-methyl pyrrolidone are completely dissolved, adding nano boehmite, performing ultrasonic homogenization, dropwise adding concentrated sulfuric acid, heating to 140-150 ℃, performing condensation reaction for 8-12 hours, centrifuging to take a lower-layer solid, scraping the lower-layer solid onto a filtering device, washing the lower-layer solid to be neutral by using deionized water, and performing drying treatment to obtain modified nano boehmite; wherein the mass ratio of the protocatechuic acid to the nano boehmite to the N-methyl pyrrolidone is 1:4:20, the concentrated sulfuric acid is sulfuric acid with the mass concentration of 98%, and the adding amount of the concentrated sulfuric acid is 2% of the mass of the protocatechuic acid.

Treating cotton fibers with o-phenylenediamine to obtain o-phenylenediamine/cotton fibers:

s1, weighing cotton fibers, mixing the cotton fibers with a sodium hydroxide solution with the mass fraction of 10%, heating to 45-55 ℃, soaking for 2-4 hours, filtering to remove liquid, and washing with deionized water to be neutral to obtain activated cotton fibers; wherein the mass ratio of the cotton fiber to the sodium hydroxide solution is 1: 10;

s2, weighing o-phenylenediamine and mixing with deionized water, heating to 70-80 ℃, stirring until the o-phenylenediamine and the deionized water are completely dissolved, adding activated cotton fibers, keeping the temperature, continuously stirring for 8-10 hours, cooling, filtering to obtain a solid, washing with hot water for at least three times, and drying to obtain o-phenylenediamine/cotton fibers; wherein the mass ratio of the o-phenylenediamine to the activated cotton fiber to the deionized water is 1:5: 20.

Combining o-phenylenediamine/cotton fibers with modified nano-boehmite to obtain modified cotton fibers:

mixing o-phenylenediamine/cotton fibers and modified nano boehmite into N-methyl pyrrolidone, fully dispersing, pouring into a reaction kettle with tetrafluoroethylene as a lining, replacing air in the reaction kettle with oxygen, placing the reaction kettle at 120-140 ℃ for reaction for 24-48 hours, cooling, filtering, collecting a solid product, sequentially washing the solid product with a hydrochloric acid solution with the concentration of 0.1mol/L and a sodium hydroxide solution with the concentration of 0.1mol/L for three times respectively, and then washing with deionized water to be neutral to obtain modified cotton fibers; wherein the mass ratio of the o-phenylenediamine/cotton fiber to the modified nano boehmite to the N-methyl pyrrolidone is 1:0.4: 20.

Comparative example

An antibacterial printing and dyeing process of blended fabric comprises the following steps:

step 1, cotton fibers are sequentially subjected to opening picking, cotton carding, pre-drawing and combing treatment, polyester fibers are sequentially subjected to opening picking, carding and pre-drawing treatment, and then are sequentially subjected to roving, spinning and spooling treatment under the conditions that the temperature is 25-30 ℃ and the humidity is 55-70% to obtain first yarns; wherein the mass ratio of the cotton fibers to the polyester fibers is 1.5: 1; the roving is to perform a roving process on a roving frame, the spinning is to perform a spinning process on a spinning frame, and the spooling is to make the yarn into a twisted bobbin by using a spooling machine;

step 2, cotton fibers are sequentially subjected to opening picking, cotton carding, pre-drawing and combing treatment, polyurethane fibers are sequentially subjected to opening picking, carding and pre-drawing treatment, and then are sequentially subjected to roving, spinning and spooling treatment under the conditions that the temperature is 25-30 ℃ and the humidity is 55% -70% to obtain second yarns; the mass ratio of the cotton fibers to the polyurethane fibers is 1: 0.05;

step 3, taking the first yarns as warps and the second yarns as wefts, and sequentially performing warping, sizing, denting and weaving to finally weave to form a blended fabric blank; wherein the weaving form of the blended fabric blank is a plain weave; the weaving density of the warp and the weft is as follows: the warp density is 86 pieces/cm, and the weft density is 72 pieces/cm;

step 4, dip-dyeing the blended fabric by using a dye to obtain a blended fabric printing and dyeing product; wherein the concentration of the dye is 30g/L, and the dye is an aminostilbene disulfonic acid direct dye;

and 5, drying the blended fabric printing and dyeing product in a drying chamber at the temperature of 90 ℃ to obtain the blended fabric.

For more clearly explaining the invention, the blended fabrics obtained by the processes of the invention in the embodiments 1 to 3 and the comparative example are subjected to performance detection and comparison, the tensile strength of the fabric is detected by using the standard GB/T3917.2-2009, the color fastness to washing of the fabric is detected by using the standard GB/T3921.1-1997, the bacteriostatic rate of the fabric is detected by using the standard GB/T20944.2-2007, and the washing is performed by using the same method, and the results are shown in Table 1:

TABLE 1 comparison of the Properties of different blended fabrics

As can be seen from Table 1, the blended fabric prepared by the processes of the embodiments 1 to 3 of the invention has better tensile strength, color fastness to washing, bacteriostasis rate and washing resistance.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.