阅读说明：本技术 一种微胶囊调温抗菌面料 (Microcapsule temperature-regulating antibacterial fabric ) 是由 缪玲玲 金萍 魏剑虹 于 2021-01-12 设计创作，主要内容包括：本发明公开了一种微胶囊调温抗菌面料,所述面料由按照重量百分比为96％混合纤维以及4％氨纶混纺构成,其中混合纤维包括30-50％储能调温纤维素纤维、20-50％有机锌抗菌棉纤维以及20-50％精制棉纤维。本发明具有以下有益效果：这种面料同时具有调温和长效抗菌功能,且还具有抗病毒、防霉的效果。(The invention discloses a microcapsule temperature-regulating antibacterial fabric which is formed by blending 96% of mixed fiber and 4% of spandex according to weight percentage, wherein the mixed fiber comprises 30-50% of energy-storing and temperature-regulating cellulose fiber, 20-50% of organic zinc antibacterial cotton fiber and 20-50% of refined cotton fiber. The invention has the following beneficial effects: the fabric has the functions of temperature regulation and long-acting antibiosis, and also has the effects of antivirus and mildew resistance.)

1. A microcapsule temperature-regulating antibacterial fabric is characterized in that: the fabric is formed by blending 96% of mixed fiber and 4% of spandex according to the weight percentage, wherein the mixed fiber comprises 30-50% of energy storage and temperature adjustment cellulose fiber, 20-50% of organic zinc antibacterial cotton fiber and 20-50% of refined cotton fiber;

the sum of the weight percentages of the energy storage and temperature adjustment cellulose fiber, the organic zinc antibacterial cotton fiber and the refined cotton fiber is 100 percent;

the manufacturing method of the microcapsule temperature-regulating antibacterial fabric comprises the following steps:

s1: uniformly feeding and spinning 30-50% of energy-storing and temperature-adjusting cellulose fiber, 20-50% of organic zinc antibacterial cotton fiber and 20-50% of refined cotton fiber to prepare blended yarn;

s2, spinning 96 percent of mixed fiber and 4 percent of spandex by a siro compact spinning method through a double-sided circular knitting machine to manufacture a primary finished product of knitted fabric;

and S3, carrying out primary setting, pretreatment, dyeing and secondary setting on the primary finished product of the knitted fabric to obtain the microcapsule temperature-regulating antibacterial fabric.

2. The microcapsule temperature-regulating antibacterial fabric according to claim 1, which is characterized in that: the energy storage and temperature regulation cellulose fiber is prepared from cellulose and energy storage and temperature regulation microcapsules by a viscose wet spinning process.

3. The microcapsule temperature-regulating antibacterial fabric according to claim 2, which is characterized in that: the specification of the energy-storing and temperature-adjusting cellulose fiber is 1.2D-3.0D, the length is 32-58 mm, and the enthalpy value is 10-25J/g.

4. The microcapsule temperature-regulating antibacterial fabric according to claim 3, which is characterized in that: the capsule core of the energy-storing and temperature-regulating microcapsule is one of paraffin, n-octadecane, n-nonadecane or n-eicosane, and the capsule wall is one of modified polymethyl methacrylate, modified melamine formaldehyde resin or urea formaldehyde resin.

5. The microcapsule temperature-regulating antibacterial fabric according to claim 4, which is characterized in that: the grain diameter of the energy storage and temperature regulation microcapsule is less than or equal to 2.5 mu m.

6. The microcapsule temperature-regulating antibacterial fabric according to claim 1, which is characterized in that: the preparation process of the organic zinc antibacterial cotton fiber comprises the following steps:

(1) pretreatment of cotton fibers:

removing impurities from cotton fiber at ultrasonic frequency of 2 × 10⁵Hz, the concentration of the sodium hydroxide solution is 90g/L, the treatment bath ratio is 1:5, the temperature is 50 ℃, and the treatment time is 60 min; then, carrying out dehydration treatment, wherein the rotation speed of centrifugal dehydration is 700rpm, and the water content of the dehydrated cotton fiber is 90%;

(2) activation treatment of cotton fiber:

activating the pretreated cotton fibers, wherein the frequency of the activating ultrasonic wave is 2 multiplied by 10⁵Hz, the mass fraction of the ethylenediamine solution is 50%, the treatment bath ratio is 1:10, the temperature is 20 ℃, the treatment time is 6h, the activated cotton fiber is obtained after the activation, the rotation speed of the centrifugal dehydration is 2000rpm, and the water content of the dehydrated cotton fiber is 60%;

(3) and (3) cotton fiber antibacterial antiviral mildew-proof finishing:

subjecting the activated cotton fiber to ultrasonic treatment at frequency of 2 × 10⁵Hz, the antibacterial, antiviral and mildewproof finishing liquid contains 30g/L zinc gluconate and 2g/L penetrant JFC, the treatment bath ratio is 1:20, the temperature is 40 ℃, the treatment time is 180min, the antibacterial, antiviral and mildewproof finishing is carried out, then the cotton fiber is dehydrated through a high-pressure padder, the pressure of the high-pressure padder is 50MPa, and the antibacterial, antiviral and mildewproof finishing cotton fiber is obtained, wherein the water content of the cotton fiber is 95 percent;

(4) irradiation crosslinking of cotton fiber:

and the dehydrated antibacterial, antiviral and mildewproof finished cotton fiber is subjected to wet opening, then is subjected to forward drying, irradiation crosslinking, oiling agent spraying, after-drying, dry opening and finally is packaged to obtain the cotton fiber with durable antibacterial and antiviral functions.

7. The microcapsule temperature-regulating antibacterial fabric according to claim 6, which is characterized in that: the drying conditions of the front drying in the step (4) are as follows: the temperature is 80 ℃, and the time is 60min, so that the water content of the cotton fiber is less than or equal to 10 percent; the drying conditions of the post-drying are as follows: and (3) drying by adopting microwave with the frequency of 915MHz for 40min, so that the water content of the cotton fiber is less than or equal to 9%.

8. The microcapsule temperature-regulating antibacterial fabric according to claim 6, which is characterized in that: the irradiation used in the irradiation crosslinking process in the step (4) is electron beam irradiation, the irradiation intensity is 35kGy, and the time is 150 s.

9. The microcapsule temperature-regulating antibacterial fabric according to claim 6, which is characterized in that: the oil agent is a softening agent, the concentration is 4g/L, and the cotton fiber is continuously stirred during spraying to be uniform.

Technical Field

The invention relates to the field of textile materials, in particular to a microcapsule temperature-regulating antibacterial fabric.

Background

With the technological progress, people are not limited to the basic requirements of being full of warmth, and the requirements on the wearing comfort, the light warmth retention property, the antibacterial property and other functionalities of the clothes are increasing. Especially, people who move outdoors for a long time are limited by conditions, clothes cannot be frequently replaced, the time is long, bacteria are easy to breed, and harm is caused to health, so that the requirements on antibacterial and temperature-adjustable clothes are urgent.

In the aspect of temperature regulation, the existing temperature regulation textile is a fabric textile formed by adding a phase change material (a substance with a melting point of 30-38 ℃ and a crystallization temperature of 10-30 ℃ is coated in a micron-sized polymer capsule) into viscose or acrylic (spun wool) fibers and then weaving the mixture into fabric textile, and the heat absorption/heat release behavior of the fabric textile when the fabric textile undergoes solid-liquid/liquid-solid phase change is utilized to enable the periphery of a body to form a 'microcirculation' environment similar to the 'air conditioning' efficiency, so that the aim of effectively regulating the body temperature of a human body is fulfilled.

In the aspect of antibiosis, the prior antibacterial fabric can be obtained by two methods, one is that antibacterial fiber is directly woven into the antibacterial fabric; the other is to fix the antibacterial agent on the fiber by post-treatment processing. Currently, in the antibacterial processing of textiles, the after-finishing method accounts for about 70%. The antibacterial after-finishing processing method is to finish the textile by using an antibacterial agent with certain washability, so that the antibacterial agent can be attached to the textile.

However, in the prior art, the antibacterial fabric only plays an antibacterial role, but has poor or even no effect on antiviral and mildewproof effects. In addition, as the washing times of the antibacterial fabric are increased, the antibacterial performance of the fabric is remarkably reduced after 50 times of washing, so that the clothes do not have long-acting antibacterial capacity, and therefore, the improvement is needed.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the microcapsule temperature-regulating antibacterial fabric which has the functions of temperature regulation and long-acting antibiosis, and also has the effects of antivirus and mildew resistance.

The technical purpose of the invention is realized by the following technical scheme: a microcapsule temperature-regulating antibacterial fabric is formed by blending 96% of mixed fibers and 4% of spandex according to weight percentage, wherein the mixed fibers comprise 30-50% of energy-storing and temperature-regulating cellulose fibers, 20-50% of organic zinc antibacterial cotton fibers and 20-50% of refined cotton fibers;

the sum of the weight percentages of the energy storage and temperature adjustment cellulose fiber, the organic zinc antibacterial cotton fiber and the refined cotton fiber is 100 percent;

the manufacturing method of the microcapsule temperature-regulating antibacterial fabric comprises the following steps:

s1: uniformly feeding and spinning 30-50% of energy-storing and temperature-adjusting cellulose fiber, 20-50% of organic zinc antibacterial cotton fiber and 20-50% of refined cotton fiber to prepare blended yarn;

s2, spinning 96 percent of mixed fiber and 4 percent of spandex by a siro compact spinning method through a double-sided circular knitting machine to manufacture a primary finished product of knitted fabric;

and S3, carrying out primary setting, pretreatment, dyeing and secondary setting on the primary finished product of the knitted fabric to obtain the microcapsule temperature-regulating antibacterial fabric.

The invention is further configured to: the energy storage and temperature regulation cellulose fiber is prepared from cellulose and energy storage and temperature regulation microcapsules by a viscose wet spinning process.

The invention is further configured to: the specification of the energy-storing and temperature-adjusting cellulose fiber is 1.2D-3.0D, the length is 32-58 mm, and the enthalpy value is 10-25J/g.

The invention is further configured to: the capsule core of the energy-storing and temperature-regulating microcapsule is one of paraffin, n-octadecane, n-nonadecane or n-eicosane, and the capsule wall is one of modified polymethyl methacrylate, modified melamine formaldehyde resin or urea formaldehyde resin.

The invention is further configured to: the grain diameter of the energy storage and temperature regulation microcapsule is less than or equal to 2.5 mu m.

The invention is further configured to: the preparation process of the organic zinc antibacterial cotton fiber comprises the following steps:

(1) pretreatment of cotton fibers:

removing impurities from cotton fiber at ultrasonic frequency of 2 × 10⁵Hz, the concentration of the sodium hydroxide solution is 90g/L, the treatment bath ratio is 1:5, the temperature is 50 ℃, and the treatment time is 60 min; then, carrying out dehydration treatment, wherein the rotation speed of centrifugal dehydration is 700rpm, and the water content of the dehydrated cotton fiber is 90%;

(2) activation treatment of cotton fiber:

activating the pretreated cotton fibers, wherein the frequency of the activating ultrasonic wave is 2 multiplied by 10⁵Hz, the mass fraction of the ethylenediamine solution is 50%, the treatment bath ratio is 1:10, the temperature is 20 ℃, and the treatment is carried out atTreating for 6h, dehydrating after activation, wherein the rotation speed of centrifugal dehydration is 2000rpm, and the water content of the dehydrated cotton fiber is 60 percent to prepare the activated cotton fiber;

(3) and (3) cotton fiber antibacterial antiviral mildew-proof finishing:

subjecting the activated cotton fiber to ultrasonic treatment at frequency of 2 × 10⁵Hz, the antibacterial, antiviral and mildewproof finishing liquid contains 30g/L zinc gluconate and 2g/L penetrant JFC, the treatment bath ratio is 1:20, the temperature is 40 ℃, the treatment time is 180min, the antibacterial, antiviral and mildewproof finishing is carried out, then the cotton fiber is dehydrated through a high-pressure padder, the pressure of the high-pressure padder is 50MPa, and the antibacterial, antiviral and mildewproof finishing cotton fiber is obtained, wherein the water content of the cotton fiber is 95 percent;

(4) irradiation crosslinking of cotton fiber:

and the dehydrated antibacterial, antiviral and mildewproof finished cotton fiber is subjected to wet opening, then is subjected to forward drying, irradiation crosslinking, oiling agent spraying, after-drying, dry opening and finally is packaged to obtain the cotton fiber with durable antibacterial and antiviral functions.

The invention is further configured to: the drying conditions of the front drying in the step (4) are as follows: the temperature is 80 ℃, and the time is 60min, so that the water content of the cotton fiber is less than or equal to 10 percent; the drying conditions of the post-drying are as follows: and (3) drying by adopting microwave with the frequency of 915MHz for 40min, so that the water content of the cotton fiber is less than or equal to 9%.

The invention is further configured to: the irradiation used in the irradiation crosslinking process in the step (4) is electron beam irradiation, the irradiation intensity is 35kGy, and the time is 150 s.

The invention is further configured to: the oil agent is a softening agent, the concentration is 4g/L, and the cotton fiber is continuously stirred during spraying to be uniform.

In conclusion, the invention has the following beneficial effects:

1. the fabric prepared by the application can simultaneously take the effects of energy storage, temperature adjustment and antibiosis into consideration, is comfortable to wear, and has good energy storage, temperature adjustment and antibiosis performances; specifically, the method comprises the following steps: the energy-storage temperature-regulating fiber has good heat storage and release bidirectional temperature regulation functions, and simultaneously the cellulose has good moisture absorption and air permeability, antistatic property and skin-friendly performance;

2. the organic zinc antibacterial cotton fiber not only has the excellent performance of cotton, but also has long-lasting antibacterial performance. Specifically, in the preparation process of the organic zinc antibacterial cotton fiber:

the pretreatment process aims at pretreating cotton fibers, and comprises the steps of treating cellulose fibers by using a sodium hydroxide solution with a certain bath ratio under an ultrasonic condition, and then dehydrating to obtain dehydrated cellulose fibers. The process aims to strip impurities such as grease and the like adsorbed on the fiber surface, so that the cleanliness of the cellulose fiber is improved, and the subsequent process is convenient to carry out;

secondly, activating the cotton fibers, wherein the activation method is to activate the cotton fibers by using ethylenediamine under the ultrasonic condition, so that the crystallinity and regularity of the surfaces of the cellulose fibers are effectively reduced, the subsequent antibacterial, antiviral and mildewproof finishing liquid can be conveniently and rapidly diffused, the content of effective components is increased, the effective components are more uniformly dispersed, and the activated cellulose fibers are prepared by dewatering after the activation;

secondly, carrying out antibacterial, antiviral and mildewproof finishing on the cotton fiber, wherein the finishing environment is still carried out under the ultrasonic condition, and the antibacterial, antiviral and mildewproof finishing liquid consists of the following components: 30g/L of zinc gluconate, 2g/L of penetrant JFC and the balance of water; enabling hydroxyl and amino on the activated cotton fiber macromolecular chain to generate covalent bond reaction with zinc gluconate;

secondly, the invention utilizes the electron beam irradiation technology and the microwave drying technology to further activate the cellulose fiber and realize the crosslinking of the cellulose fiber and the organic zinc functional auxiliary agent, thereby reducing the loss of organic zinc in the subsequent use process and ensuring the functionality to be more durable;

3. compared with the conventional fiber, the organic zinc antibacterial cotton fiber prepared by the invention has better glossiness, the zinc element content in the fiber is 725mg/kg, the bacteriostatic activity value is 2.3, and the bactericidal activity value is 0.2; the antiviral activity value to influenza A virus is 2.9-3.0, and the antiviral activity value to influenza B virus is 2.8; the mildew-proof grade can reach 1 grade.

Detailed Description

The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.

Example 1:

a microcapsule temperature-regulating antibacterial fabric is formed by blending 96% of mixed fibers and 4% of spandex according to weight percentage, wherein the mixed fibers comprise 30-50% of energy-storing and temperature-regulating cellulose fibers, 20-50% of organic zinc antibacterial cotton fibers and 20-50% of refined cotton fibers;

the sum of the weight percentages of the energy storage and temperature adjustment cellulose fiber, the organic zinc antibacterial cotton fiber and the refined cotton fiber is 100 percent;

the manufacturing method of the microcapsule temperature-regulating antibacterial fabric comprises the following steps:

s1: uniformly feeding and spinning 30-50% of energy-storing and temperature-adjusting cellulose fiber, 20-50% of organic zinc antibacterial cotton fiber and 20-50% of refined cotton fiber to prepare blended yarn;

s2, spinning 96 percent of mixed fiber and 4 percent of spandex by a siro compact spinning method through a double-sided circular knitting machine to manufacture a primary finished product of knitted fabric;

and S3, carrying out primary setting, pretreatment, dyeing and secondary setting on the primary finished product of the knitted fabric to obtain the microcapsule temperature-regulating antibacterial fabric.

Specifically, the method comprises the following steps: the process conditions in the step S2 are as follows: the length of the mixed fiber is 300mm/100 coils, and the length of the spandex coil is 75mm/100 coils. The number of weaving machine is 60, and the rotating speed is 20 r/min. The double-sided circular knitting machine is 30 inches, 24 needles.

The primary sizing process in step S3 includes:

the setting temperature is 195 ℃, the width of the needle plate is 130cm, the speed of the setting machine is 16 m/min, and the overfeeding is 20%.

The preprocessing step in step S3 is:

caustic soda: 3% of hydrogen peroxide: 5%, temperature 95 ℃ and time 30 minutes.

The dyeing process in step S3 includes:

dyeing with reactive dye at 60 deg.c for 40 min.

The secondary sizing process in step S3 includes:

the setting temperature is 150 ℃, the width of the needle plate is 130cm, the speed of the setting machine is 16 m/min, and the overfeeding is 20%.

Furthermore, the energy storage and temperature regulation cellulose fiber is prepared from cellulose and energy storage and temperature regulation microcapsules through a viscose wet spinning process.

Furthermore, the specification of the energy-storage and temperature-adjustment cellulose fiber is 1.2D-3.0D, the length is 32-58 mm, and the enthalpy value is 10-25J/g.

Further, the capsule core of the energy-storing and temperature-adjusting microcapsule is one of paraffin, n-octadecane, n-nonadecane and n-eicosane, and the capsule wall is one of modified polymethyl methacrylate, modified melamine formaldehyde resin or urea formaldehyde resin.

Furthermore, the particle size of the energy storage and temperature regulation microcapsule is less than or equal to 2.5 mu m.

Further, the preparation process of the organic zinc antibacterial cotton fiber comprises the following steps:

(1) pretreatment of cotton fibers:

removing impurities from cotton fiber at ultrasonic frequency of 2 × 105Hz, concentration of sodium hydroxide solution of 90g/L, treatment bath ratio of 1:5, temperature of 50 deg.C, and treatment time of 60 min; then, carrying out dehydration treatment, wherein the rotation speed of centrifugal dehydration is 700rpm, and the water content of the dehydrated cotton fiber is 90%;

(2) activation treatment of cotton fiber:

activating the pretreated cotton fibers, wherein the frequency of activating ultrasonic waves is 2 multiplied by 105Hz, the mass fraction of an ethylenediamine solution is 50%, the treatment bath ratio is 1:10, the temperature is 20 ℃, the treatment time is 6 hours, after activation, dehydration is carried out, the rotation speed of centrifugal dehydration is 2000rpm, and the water content of the dehydrated cotton fibers is 60%, so as to prepare the activated cotton fibers;

(3) and (3) cotton fiber antibacterial antiviral mildew-proof finishing:

carrying out antibacterial, antiviral and mildewproof finishing on the activated cotton fibers at an ultrasonic frequency of 2 multiplied by 105Hz and an antibacterial, antiviral and mildewproof finishing liquid containing 30g/L zinc gluconate and 2g/L penetrant JFC at a treatment bath ratio of 1:20 and a temperature of 40 ℃ for 180min, and then dehydrating the cotton fibers by a high-pressure padder at a pressure of 50MPa to obtain the antibacterial, antiviral and mildewproof finished cotton fibers with a water content of 95%;

(4) irradiation crosslinking of cotton fiber:

the dehydrated cotton fiber subjected to antibacterial, antiviral and mildewproof finishing is subjected to wet opening, then is subjected to forward drying (the temperature is 80 ℃, the time is 60min, the water content of the fiber is less than or equal to 10 percent), irradiation crosslinking (electron beam irradiation, the irradiation intensity is 35kGy, the time is 150s), oiling agent spraying (the oiling agent is a softening agent, the concentration is 4g/L, the cotton fiber is continuously stirred during spraying to be uniform), and then is dried (microwave drying, the microwave frequency is 915MHz, the time is 40min, the water content of the fiber is less than or equal to 9 percent), dry opening and finally packaging to obtain the cotton fiber with durable antibacterial and antiviral functions.

Test example:

according to JISL 1902: 2008 & ltantibacterial effect of textile antibacterial performance test method & gt detects the bacteriostatic activity value and bactericidal activity value of the microcapsule thermoregulation antibacterial fabric prepared in example 1, and the results are listed in table 1.

The antiviral activity values of the microcapsule thermoregulation antibacterial fabric prepared in the embodiment 1 on influenza A virus and influenza B virus are detected according to ISO 198184:2014 'antiviral test method of textile products', and the results are listed in Table 1.

According to the invention, the mildew-proof effect of the microcapsule temperature-regulating antibacterial fabric prepared in the example 1 on aspergillus niger and chaetomium globosum is detected by a culture dish method in GB/T24346-2009 evaluation of mildew-proof performance of textiles, and the result is shown in Table 1.

Table 1 antibacterial, antiviral and antifungal properties of the microcapsule thermoregulation antibacterial fabric prepared in example 1

The data in table 1 show that the microcapsule thermoregulation antibacterial fabric provided by the invention has higher bacteriostatic activity value and bactericidal activity value, and simultaneously has higher antiviral activity value for influenza a virus and influenza b virus, and the mould-proof effect is above grade 1, so that the microcapsule thermoregulation antibacterial fabric has better antibacterial, antiviral and mould-proof properties.

The microcapsule temperature-regulating antibacterial fabric prepared in example 1 is washed for 50 times according to standard FZ/T73023 and 2006 appendix C4. simplified washing conditions and washing methods in the procedure, and then according to JISL 1902: 2008 and ISO 198184:2014, the antibacterial, antiviral and mildewproof performances of the microcapsule temperature-regulating and antibacterial fabric after being washed for 50 times are detected, and the results are listed in Table 2.

Table 2 antibacterial and antiviral properties of the microcapsule thermoregulation antibacterial fabric prepared in example 1 after washing for 50 times

As can be seen from table 2, the microcapsule temperature-regulating antibacterial fabric provided by the invention still has high antibacterial, antiviral and mildewproof performances after being washed for 50 times, and the microcapsule temperature-regulating antibacterial fabric provided by the invention is proved to have lasting antibacterial, antiviral and mildewproof performances.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description.