阅读说明：本技术 一种复合高弹力纱线及其制备方法 (Composite high-elasticity yarn and preparation method thereof ) 是由 刘平静 于 2021-07-19 设计创作，主要内容包括：本发明公开了一种复合高弹力纱线及其制备方法,该复合高弹力纱线由复合纱线和弹性纤维并条制成,该复合纱线包括如下重量百分比原料：蚕丝30-50％、涤纶纱15-20％、天丝10-15％、余量棉花；在制备复合纱线的过程中使用了驱蚊填料,该驱蚊填料以壳聚糖为原料,先对壳聚糖羧基化处理,制得羧甲基壳聚糖,将羧甲基壳聚糖与γ-氨丙基三乙氧基硅烷进行脱水缩合,制得改性壳聚糖,再用明胶液与改性壳聚糖对避蚊胺进行微囊化处理,防止了避蚊胺直接与肌肤接触,同时进行浸轧的过程中驱蚊填料硅氧烷水解成硅醇与复合纱线表面的活性羟基连接,进而使得衣物在多次洗涤后,仍具有很好的驱蚊效果。(The invention discloses a composite high-elasticity yarn and a preparation method thereof, wherein the composite high-elasticity yarn is prepared by drawing a composite yarn and elastic fibers, and the composite yarn comprises the following raw materials in percentage by weight: 30-50% of silk, 15-20% of polyester yarn, 10-15% of tencel and the balance cotton; the mosquito-repellent filling material is used in the process of preparing the composite yarn, the mosquito-repellent filling material takes chitosan as a raw material, the chitosan is subjected to carboxylation to prepare carboxymethyl chitosan, the carboxymethyl chitosan and gamma-aminopropyl triethoxysilane are subjected to dehydration condensation to prepare modified chitosan, then gelatin solution and the modified chitosan are used for carrying out microencapsulation treatment on the deet, so that the deet is prevented from directly contacting with the skin, and meanwhile, in the padding process, the mosquito-repellent filling material siloxane is hydrolyzed into silanol to be connected with active hydroxyl groups on the surface of the composite yarn, so that the clothes still have good mosquito-repellent effect after being washed for many times.)

1. The utility model provides a compound high elastic force yarn which characterized in that: the elastic fiber composite yarn is prepared by drawing composite yarns and elastic fibers, wherein the composite yarns comprise the following raw materials in percentage by weight: 30-50% of silk, 15-20% of polyester yarn, 10-15% of tencel and the balance cotton;

the elastic fiber is prepared by the following steps:

step A1: adding graphene into ethanol, carrying out ultrasonic treatment, adding deionized water and gamma-aminopropyltriethoxysilane, adjusting the pH value of a reaction solution, heating and stirring, filtering to remove filtrate, and drying a filter cake to obtain modified graphene;

step A2: dissolving copper nitrate trihydrate in deionized water, stirring, adding a sodium hydroxide solution, modified graphene and jade powder, continuing stirring, adding ethylenediamine and hydrazine hydrate, heating, stirring, and filtering to remove filtrate to obtain a heat dissipation filler;

step A3: adding polytetrahydrofuran diol, polyoxypropylene diol and dicyclohexylmethane diisocyanate into a reaction kettle, introducing nitrogen for protection, heating for reaction, adding 1, 4-butanediol and dibutyltin dilaurate, uniformly mixing, pressurizing and vulcanizing to obtain elastic particles, mixing polyamide 6 slices, the elastic particles and a heat dissipation filler, and performing extrusion spinning to obtain the elastic fiber.

2. The composite high-elasticity yarn as claimed in claim 1, wherein: the using amount ratio of the graphene, the ethanol, the deionized water and the gamma-aminopropyltriethoxysilane in the step A1 is 1 g: 100mL of: 75mL of: 2g of the total weight.

3. The composite high-elasticity yarn as claimed in claim 1, wherein: the using amount ratio of the copper nitrate trihydrate, the sodium hydroxide solution, the modified graphene, the jade powder, the ethylenediamine and the hydrazine hydrate in the step A2 is 0.35 g: 700 mL: 5 g: 1.5 g: 2.4 mL: 165 mu L of sodium hydroxide solution with the mass fraction of 15 percent.

4. The composite high-elasticity yarn as claimed in claim 1, wherein: the dosage ratio of the polytetrahydrofuran diol, the polyoxypropylene diol, the dicyclohexylmethane diisocyanate, the 1, 4-butanediol and the dibutyltin dilaurate in the step A3 is 0.4 mol: 0.6 mol: 52.6 g: 1.8 g: 0.3g, wherein the dosage mass ratio of the polyamide 6 slices, the elastic particles and the heat dissipation filler is 20: 3: 1.5.

5. the method for preparing the composite high-elasticity yarn according to claim 1, wherein the method comprises the following steps: the method specifically comprises the following steps:

step S1: cotton carding and drawing are carried out on silk, polyester yarn, tencel and cotton to prepare composite yarn;

step S2: dispersing the mosquito-repellent filler in deionized water, adding ethanol, adjusting the pH value of the mixed solution to 6, adding the composite yarn, and padding at the temperature of 70-80 ℃ to obtain modified yarn;

step S3: and drawing the modified yarn and the elastic fiber to obtain the composite high-elasticity yarn.

6. The method for preparing the composite high-elasticity yarn according to claim 5, wherein the method comprises the following steps: the mosquito-repellent filler is prepared by the following steps:

step B1: dissolving chitosan in acetic acid, adding acetone for precipitation to prepare chitosan acetate, adding the chitosan acetate, a sodium hydroxide solution and isopropanol into a reaction kettle, stirring and dropwise adding chloroacetic acid, heating for reaction, adjusting the pH value of a reaction solution to be neutral, filtering to remove filtrate, drying a filter cake to prepare carboxymethyl chitosan, adding carboxymethyl chitosan, deionized water and gamma-aminopropyltriethoxysilane into the reaction kettle, stirring and adding 1-hydroxybenzotriazole for reaction, and distilling to remove the deionized water to prepare modified chitosan;

step B2: adding the deet, the gelatin solution and the modified chitosan into a stirring kettle, stirring until the mixture is uniformly mixed, adding deionized water, heating to react under an acidic condition, cooling, adding glutaraldehyde, reacting, filtering to remove filtrate, and drying a filter cake to obtain the mosquito-repellent filler.

7. The method for preparing the composite high-elasticity yarn according to claim 6, wherein the method comprises the following steps: the dosage ratio of the chitosan acetate, the sodium hydroxide solution, the isopropanol and the chloroacetic acid in the step B1 is 5 g: 20mL of: 10mL of: 8mL, the mass fraction of the sodium hydroxide solution is 20%, and the mass ratio of the dosage of the carboxymethyl chitosan, the gamma-aminopropyl triethoxysilane and the 1-hydroxybenzotriazole is 5: 2: 1.3.

8. the method for preparing the composite high-elasticity yarn according to claim 6, wherein the method comprises the following steps: the dosage ratio of the diethyltoluamide, the gelatin solution, the modified chitosan, the deionized water and the glutaraldehyde in the step B2 is 6.5 g: 20mL of: 18 g: 120mL of: 10 mL.

Technical Field

The invention relates to the technical field of spinning, in particular to a composite high-elasticity yarn and a preparation method thereof.

Background

The fabric with single function can not meet the consumption requirements of people in the industrial age far. Various functional fabrics come into play, such as waterproof, radiation-proof, flame-retardant and arc-resistant fabrics. There are many ways to achieve the functionality of the fabric, and obtaining features directly from textile materials is the most common and most direct means. In the process of manufacturing the functional fabric by using various functional fibers, the fabric obtains the superposition of the functions and also obtains new characteristics except the functions, thereby providing other application scenes for the fabric.

The existing yarn is poor in elasticity, the woven cloth is easy to damage, and the mosquito repelling effect is not achieved, so that the use experience of a user is poor.

Disclosure of Invention

The invention aims to provide a composite high-elasticity yarn and a preparation method thereof.

The technical problems to be solved by the invention are as follows:

the existing yarn is poor in elasticity, the woven cloth is easy to damage, and the mosquito repelling effect is not achieved, so that the use experience of a user is poor.

The purpose of the invention can be realized by the following technical scheme:

the composite high-elasticity yarn is prepared by drawing composite yarns and elastic fibers, and the composite yarns comprise the following raw materials in percentage by weight: 30-50% of silk, 15-20% of polyester yarn, 10-15% of tencel and the balance cotton;

the composite high-elasticity yarn is prepared by the following steps:

step S1: cotton carding and drawing are carried out on silk, polyester yarn, tencel and cotton to prepare composite yarn;

step S2: dispersing the mosquito-repellent filler in deionized water, adding ethanol, adjusting the pH value of the mixed solution to 6, adding the composite yarn, and padding at the temperature of 70-80 ℃ to obtain modified yarn;

step S3: and drawing the modified yarn and the elastic fiber to obtain the composite high-elasticity yarn.

Further, the elastic fiber is prepared by the following steps:

step A1: adding graphene into ethanol, carrying out ultrasonic treatment for 1-1.5h under the condition of the frequency of 3-5MHz, adding deionized water and gamma-aminopropyltriethoxysilane, adjusting the pH value of a reaction solution to 3-4, heating and stirring for 20-25h under the conditions of the rotation speed of 150-200r/min and the temperature of 70 ℃, filtering to remove filtrate, and drying a filter cake to obtain modified graphene;

step A2: dissolving copper nitrate trihydrate in deionized water, stirring and adding a sodium hydroxide solution, modified graphene and jade powder under the condition that the rotating speed is 150-200r/min, stirring for 10-15min, adding ethylenediamine and hydrazine hydrate, stirring for 3-5h under the conditions that the rotating speed is 500-600r/min and the temperature is 70-75 ℃, and filtering to remove filtrate to obtain the heat dissipation filler;

step A3: adding polytetrahydrofuran diol, polypropylene oxide diol and dicyclohexylmethane diisocyanate into a reaction kettle, introducing nitrogen for protection, reacting for 2-4h at the temperature of 80-90 ℃, adding 1, 4-butanediol and dibutyltin dilaurate, uniformly mixing, pressurizing and vulcanizing for 1-1.5h at the temperature of 85-90 ℃ and under the pressure of 8-10MPa to prepare elastic particles, mixing polyamide 6 slices, the elastic particles and a heat dissipation filler, and extruding and spinning at the temperature of 230-240 ℃ to prepare the elastic fiber.

Further, the dosage ratio of the graphene, the ethanol, the deionized water and the gamma-aminopropyltriethoxysilane in the step A1 is 1 g: 100mL of: 75mL of: 2g of the total weight.

Further, the using amount ratio of the copper nitrate trihydrate, the sodium hydroxide solution, the modified graphene, the jade powder, the ethylenediamine and the hydrazine hydrate in the step A2 is 0.35 g: 700 mL: 5 g: 1.5 g: 2.4 mL: 165 mu L of sodium hydroxide solution with the mass fraction of 15 percent.

Further, the polytetrahydrofuran diol, the polypropylene oxide diol, the dicyclohexylmethane diisocyanate, the 1, 4-butanediol and the dibutyltin dilaurate in the step A3 are used in an amount ratio of 0.4 mol: 0.6 mol: 52.6 g: 1.8 g: 0.3g, wherein the dosage mass ratio of the polyamide 6 slices, the elastic particles and the heat dissipation filler is 20: 3: 1.5.

further, the mosquito repellent filler is prepared by the following steps:

step B1: dissolving chitosan in acetic acid, adding acetone for precipitation to prepare chitosan acetate, adding the chitosan acetate, a sodium hydroxide solution and isopropanol into a reaction kettle, stirring and dropwise adding chloroacetic acid under the condition that the rotation speed is 150 plus one year at 200r/min, reacting for 3-5h at the temperature of 75-80 ℃, adjusting the pH value of a reaction solution to be neutral, filtering to remove filtrate, drying a filter cake to prepare carboxymethyl chitosan, adding the carboxymethyl chitosan, deionized water and gamma-aminopropyltriethoxysilane into the reaction kettle, stirring and adding 1-hydroxybenzotriazole under the conditions that the rotation speed is 200 plus one year at 300r/min and the temperature is 40-50 ℃, and distilling to remove the deionized water to prepare modified chitosan after reacting for 3-5 h;

step B2: adding the deet, the gelatin solution and the modified chitosan into a stirring kettle, stirring at the rotation speed of 300-500r/min until the materials are uniformly mixed, adding deionized water, reacting at the temperature of 50-55 ℃ and the pH value of 6-6.5 for 30-40min, cooling to the temperature of 20-25 ℃, adding glutaraldehyde, reacting at the temperature of 30-35 ℃ for 40-50min, filtering to remove filtrate, and drying filter cakes to obtain the mosquito-repellent filler.

Further, the dosage ratio of the chitosan acetate, the sodium hydroxide solution, the isopropanol and the chloroacetic acid in the step B1 is 5 g: 20mL of: 10mL of: 8mL, the mass fraction of the sodium hydroxide solution is 20%, and the mass ratio of the dosage of the carboxymethyl chitosan, the gamma-aminopropyl triethoxysilane and the 1-hydroxybenzotriazole is 5: 2: 1.3.

further, the dosage ratio of the diethyltoluamide, the gelatin solution, the modified chitosan, the deionized water and the glutaraldehyde in the step B2 is 6.5 g: 20mL of: 18 g: 120mL of: 10 mL.

A preparation method of the composite high-elasticity yarn specifically comprises the following steps:

step S1: cotton carding and drawing are carried out on silk, polyester yarn, tencel and cotton to prepare composite yarn;

step S2: dispersing the mosquito-repellent filler in deionized water, adding ethanol, adjusting the pH value of the mixed solution to 6, adding the composite yarn, and padding at the temperature of 70-80 ℃ to obtain modified yarn;

step S3: and drawing the modified yarn and the elastic fiber to obtain the composite high-elasticity yarn.

The invention has the beneficial effects that: the invention discloses a process for preparing a composite high-elasticity yarn, which comprises preparing an elastic fiber and a mosquito-repellent filler, wherein the elastic fiber takes graphene as a raw material, carrying out surface treatment by gamma-aminopropyltriethoxysilane to prepare modified graphene, then using copper nitrate trihydrate to generate nano-copper by a liquid phase reduction method, blending to enable jade powder and the nano-copper to be inlaid on the surface of the modified graphene to prepare a heat-dissipation filler, polymerizing polytetrahydrofuran diol and polyoxypropylene glycol to prepare elastic particles, carrying out melt extrusion and spinning on polyamide 6 slices, the elastic particles and the heat-dissipation filler to prepare the elastic fiber, the elastic fiber contains a large number of urethane bonds and urea bonds to improve the strength of the fiber, and simultaneously contains a large number of hydrogen bonds, when external force is applied, the hydrogen bonds are broken to absorb external energy, and after the external force is disappeared, the hydrogen bonds are formed again, the mosquito repellent filler takes chitosan as a raw material, the chitosan is subjected to carboxylation treatment to prepare carboxymethyl chitosan, the carboxymethyl chitosan and gamma-aminopropyl triethoxysilane are subjected to dehydration condensation to prepare modified chitosan, then gelatin solution and the modified chitosan are used for microencapsulation treatment of the deet, so that the deet is prevented from directly contacting with skin, and meanwhile, siloxane serving as the mosquito repellent filler is hydrolyzed into silanol and connected with active hydroxyl on the surface of the composite yarn in the padding process, so that the clothes still have a good mosquito repellent effect after being washed for many times.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

The composite high-elasticity yarn is prepared by drawing composite yarns and elastic fibers, and the composite yarns comprise the following raw materials in percentage by weight: 30% of silk, 15% of polyester yarn, 10% of tencel and the balance of cotton;

the composite high-elasticity yarn is prepared by the following steps:

step S1: cotton carding and drawing are carried out on silk, polyester yarn, tencel and cotton to prepare composite yarn;

step S2: dispersing the mosquito-repellent filler in deionized water, adding ethanol, adjusting the pH value of the mixed solution to 6, adding the composite yarn, and padding at the temperature of 70 ℃ to obtain modified yarn;

step S3: and drawing the modified yarn and the elastic fiber to obtain the composite high-elasticity yarn.

The elastic fiber is prepared by the following steps:

step A1: adding graphene into ethanol, carrying out ultrasonic treatment for 1h under the condition of the frequency of 3MHz, adding deionized water and gamma-aminopropyltriethoxysilane, adjusting the pH value of a reaction solution to 3, heating and stirring for 20h under the conditions of the rotating speed of 150r/min and the temperature of 70 ℃, filtering to remove filtrate, and drying a filter cake to obtain modified graphene;

step A2: dissolving copper nitrate trihydrate in deionized water, stirring and adding a sodium hydroxide solution, modified graphene and jade powder under the condition that the rotating speed is 150r/min, stirring for 10min, adding ethylenediamine and hydrazine hydrate, stirring for 3h under the conditions that the rotating speed is 500r/min and the temperature is 70 ℃, and filtering to remove filtrate to obtain the heat dissipation filler;

step A3: adding polytetrahydrofuran diol, polyoxypropylene diol and dicyclohexylmethane diisocyanate into a reaction kettle, introducing nitrogen for protection, reacting for 2 hours at the temperature of 80 ℃, adding 1, 4-butanediol and dibutyltin dilaurate, uniformly mixing, pressurizing and vulcanizing for 1 hour at the temperature of 85 ℃ and the pressure of 8MPa to prepare elastic particles, mixing polyamide 6 chips, the elastic particles and a heat dissipation filler, and performing extrusion spinning at the temperature of 230 ℃ to prepare the elastic fiber.

The mosquito-repellent filler is prepared by the following steps:

step B1: dissolving chitosan in acetic acid, adding acetone for precipitation to prepare chitosan acetate, adding the chitosan acetate, a sodium hydroxide solution and isopropanol into a reaction kettle, stirring and dropwise adding chloroacetic acid under the condition that the rotation speed is 150r/min, reacting for 3 hours at the temperature of 75 ℃, adjusting the pH value of a reaction solution to be neutral, filtering to remove filtrate, drying a filter cake to prepare carboxymethyl chitosan, adding carboxymethyl chitosan, deionized water and gamma-aminopropyltriethoxysilane into the reaction kettle, stirring and adding 1-hydroxybenzotriazole under the conditions that the rotation speed is 200r/min and the temperature is 40 ℃, reacting for 3 hours, and distilling to remove the deionized water to prepare modified chitosan;

step B2: adding delphene, gelatin solution and modified chitosan into a stirring kettle, stirring at the rotation speed of 300r/min until the mixture is uniformly mixed, adding deionized water, reacting at the temperature of 50 ℃ and the pH value of 6 for 30min, cooling to the temperature of 20 ℃, adding glutaraldehyde, reacting at the temperature of 30 ℃ for 40min, filtering to remove filtrate, and drying a filter cake to obtain the mosquito repellent filler.

Example 2

The composite high-elasticity yarn is prepared by drawing composite yarns and elastic fibers, and the composite yarns comprise the following raw materials in percentage by weight: 40% of silk, 18% of polyester yarn, 13% of tencel and the balance of cotton;

the composite high-elasticity yarn is prepared by the following steps:

step S1: cotton carding and drawing are carried out on silk, polyester yarn, tencel and cotton to prepare composite yarn;

step S2: dispersing the mosquito-repellent filler in deionized water, adding ethanol, adjusting the pH value of the mixed solution to 6, adding the composite yarn, and padding at the temperature of 70 ℃ to obtain modified yarn;

step S3: and drawing the modified yarn and the elastic fiber to obtain the composite high-elasticity yarn.

The elastic fiber is prepared by the following steps:

step A1: adding graphene into ethanol, carrying out ultrasonic treatment for 1h under the condition of 5MHz frequency, adding deionized water and gamma-aminopropyltriethoxysilane, adjusting the pH value of a reaction solution to 4, heating and stirring for 25h under the conditions of 150r/min of rotation speed and 70 ℃, filtering to remove filtrate, and drying a filter cake to obtain modified graphene;

step A2: dissolving copper nitrate trihydrate in deionized water, stirring and adding a sodium hydroxide solution, modified graphene and jade powder under the condition that the rotating speed is 150r/min, stirring for 15min, adding ethylenediamine and hydrazine hydrate, stirring for 3h under the conditions that the rotating speed is 500r/min and the temperature is 75 ℃, and filtering to remove filtrate to obtain the heat dissipation filler;

step A3: adding polytetrahydrofuran diol, polyoxypropylene diol and dicyclohexylmethane diisocyanate into a reaction kettle, introducing nitrogen for protection, reacting for 2 hours at the temperature of 90 ℃, adding 1, 4-butanediol and dibutyltin dilaurate, uniformly mixing, pressurizing and vulcanizing for 1.5 hours at the temperature of 90 ℃ and under the pressure of 8MPa to prepare elastic particles, mixing polyamide 6 chips, the elastic particles and a heat dissipation filler, and extruding and spinning at the temperature of 230 ℃ to prepare the elastic fiber.

The mosquito-repellent filler is prepared by the following steps:

step B1: dissolving chitosan in acetic acid, adding acetone for precipitation to prepare chitosan acetate, adding the chitosan acetate, a sodium hydroxide solution and isopropanol into a reaction kettle, stirring and dropwise adding chloroacetic acid under the condition of a rotation speed of 200r/min, reacting for 5 hours at a temperature of 75 ℃, adjusting the pH value of a reaction solution to be neutral, filtering to remove filtrate, drying a filter cake to prepare carboxymethyl chitosan, adding carboxymethyl chitosan, deionized water and gamma-aminopropyltriethoxysilane into the reaction kettle, stirring and adding 1-hydroxybenzotriazole under the conditions of a rotation speed of 200r/min and a temperature of 50 ℃, reacting for 3 hours, and distilling to remove deionized water to prepare modified chitosan;

step B2: adding delphene, gelatin solution and modified chitosan into a stirring kettle, stirring at the rotation speed of 500r/min until the mixture is uniformly mixed, adding deionized water, reacting at the temperature of 50 ℃ and the pH value of 6.5 for 30min, cooling to the temperature of 25 ℃, adding glutaraldehyde, reacting at the temperature of 30 ℃ for 50min, filtering to remove filtrate, and drying filter cakes to obtain the mosquito-repellent filler.

Example 3

The composite high-elasticity yarn is prepared by drawing composite yarns and elastic fibers, and the composite yarns comprise the following raw materials in percentage by weight: 50% of silk, 20% of polyester yarn, 15% of tencel and the balance of cotton;

the composite high-elasticity yarn is prepared by the following steps:

step S1: cotton carding and drawing are carried out on silk, polyester yarn, tencel and cotton to prepare composite yarn;

step S2: dispersing the mosquito-repellent filler in deionized water, adding ethanol, adjusting the pH value of the mixed solution to 6, adding the composite yarn, and padding at the temperature of 80 ℃ to obtain modified yarn;

step S3: and drawing the modified yarn and the elastic fiber to obtain the composite high-elasticity yarn.

The elastic fiber is prepared by the following steps:

step A1: adding graphene into ethanol, carrying out ultrasonic treatment for 1.5h under the condition of 5MHz frequency, adding deionized water and gamma-aminopropyltriethoxysilane, adjusting the pH value of a reaction solution to 4, heating and stirring for 25h under the conditions of 200r/min of rotation speed and 70 ℃, filtering to remove filtrate, and drying a filter cake to obtain modified graphene;

step A2: dissolving copper nitrate trihydrate in deionized water, stirring and adding a sodium hydroxide solution, modified graphene and jade powder under the condition that the rotating speed is 200r/min, stirring for 15min, adding ethylenediamine and hydrazine hydrate, stirring for 5h under the conditions that the rotating speed is 600r/min and the temperature is 75 ℃, and filtering to remove filtrate to obtain the heat dissipation filler;

step A3: adding polytetrahydrofuran diol, polyoxypropylene diol and dicyclohexylmethane diisocyanate into a reaction kettle, introducing nitrogen for protection, reacting for 4 hours at the temperature of 90 ℃, adding 1, 4-butanediol and dibutyltin dilaurate, uniformly mixing, pressurizing and vulcanizing for 1.5 hours at the temperature of 90 ℃ and under the pressure of 10MPa to prepare elastic particles, mixing polyamide 6 chips, the elastic particles and a heat dissipation filler, and extruding and spinning at the temperature of 240 ℃ to prepare the elastic fiber.

The mosquito-repellent filler is prepared by the following steps:

step B1: dissolving chitosan in acetic acid, adding acetone for precipitation to prepare chitosan acetate, adding the chitosan acetate, a sodium hydroxide solution and isopropanol into a reaction kettle, stirring and dropwise adding chloroacetic acid under the condition of a rotation speed of 200r/min, reacting for 5 hours at a temperature of 80 ℃, adjusting the pH value of a reaction solution to be neutral, filtering to remove filtrate, drying a filter cake to prepare carboxymethyl chitosan, adding carboxymethyl chitosan, deionized water and gamma-aminopropyltriethoxysilane into the reaction kettle, stirring and adding 1-hydroxybenzotriazole under the conditions of a rotation speed of 300r/min and a temperature of 50 ℃, reacting for 5 hours, and distilling to remove deionized water to prepare modified chitosan;

step B2: adding delphene, gelatin solution and modified chitosan into a stirring kettle, stirring at the rotation speed of 500r/min until the mixture is uniformly mixed, adding deionized water, reacting at the temperature of 55 ℃ and the pH value of 6.5 for 40min, cooling to the temperature of 25 ℃, adding glutaraldehyde, reacting at the temperature of 35 ℃ for 50min, filtering to remove filtrate, and drying a filter cake to obtain the mosquito repellent filler.

Comparative example 1

This comparative example was drawn with elastic fiber in comparison with example 1, and the rest of the procedure was the same.

Comparative example 2

Compared with the example 1, the comparative example does not use the mosquito-repellent filler, the composite yarn is padded by using the peppermint water, and the rest steps are the same.

The yarns obtained in examples 1 to 3 and comparative examples 1 to 2 were subjected to the performance test, and the test results are shown in table 1 below;

and (3) mosquito repelling effect detection: a glass box of 70cm multiplied by 70cm is used, the middle body is separated into 5 spaces by a paper board, examples 1-3 and comparative examples 1-2 are sleeved on a beaker filled with warm sugar water, samples are respectively placed in the 5 spaces, mosquitoes are randomly placed in the glass square box through an insect placing channel of a yarn cover, an insect placing opening is sealed, and the landing tendency of the mosquitoes is observed after 10 min.

TABLE 1

As can be seen from table 1 above, the drawn lengths of the yarns prepared in examples 1 to 3 were 30 to 32cm, while the drawn length of the yarn prepared in comparative example 1 was 12cm, indicating that the present invention has excellent elasticity and excellent mosquito repellent effect.

The foregoing is merely exemplary and illustrative of the principles of the present invention and various modifications, additions and substitutions of the specific embodiments described herein may be made by those skilled in the art without departing from the principles of the present invention or exceeding the scope of the claims set forth herein.