Breathable cool comfortable fabric and preparation process thereof

Abstract

The invention discloses a breathable cool comfortable fabric and a preparation process thereof, and belongs to the technical field of textile fabric preparation. Comprising the following steps: reacting bamboo fibers, hydrogen peroxide, hydrochloric acid and chitosan to prepare a bamboo fiber preform; the preparation method comprises the following steps: reacting N, N-isopropylacrylamide, deionized water, ammonium persulfate and N, N, N, N-tetramethylethylenediamine to prepare a gel solution; the bamboo fiber preform, the gel liquid, 3-fluoropyridine-4-boric acid and dimethyl fumarate are subjected to a reaction, and modified bamboo fibers are prepared; the preparation method comprises the following steps: reacting 1, 3-bis (3-glycidyl propyl)-1, 1, 3, 3-tetramethyldisiloxane, di-n-butylamine, octamethylcyclotetrasiloxane and tetramethylammonium hydroxide to prepare hydroxyl-terminated silicone oil; the preparation method comprises the following steps: reacting polyethylene glycol, isophorone diisocyanate and dibutyltin dilaurate, and adding a cross-linking agent 202 to prepare a polyurethane emulsion; the preparation method comprises the following steps: reacting polyurethane emulsion, hydroxyl-terminated silicone oil and deionized water to prepare modified polyurethane emulsion; the breathable, cool and comfortable fabric is prepared.

Description

Technical Field

[0001] The invention belongs to the technical field of textile fabric preparation, and in particular relates to a breathable, cool and comfortable fabric and a preparation process thereof. Background Art

[0002] High temperatures frequently occur in summer, and the comfort of clothing in hot environments has attracted much attention. Light, breathable, and cool functional fabrics can better meet the clothing needs in high temperature and high humidity environments, so they have become a hot spot for the development of summer and sportswear fabrics. As a synthetic fabric, spandex has a high elastic modulus and high tensile strength, which gives it excellent wear resistance. The molecular structure of spandex fiber is relatively tight. Compared with natural fibers such as cotton and linen, the pore size of spandex fiber is smaller and the layout is tighter, resulting in poor air permeability of textiles. In addition, due to the high density and elastic properties of spandex fiber, it is difficult for textiles to form good air circulation during wearing, resulting in sweat and body temperature being retained between clothing and skin, making it impossible for the body to effectively dissipate heat and evaporate moisture, increasing the feeling of stuffiness when wearing, causing a feeling of airtightness, and easily breeding bacteria to produce odor, thereby giving the wearer a poor sense of body and poor comfort. Summary of the invention

[0003] The invention discloses a breathable cool and comfortable fabric and a preparation process thereof, belonging to the technical field of textile fabric preparation. The method comprises the following steps: bamboo fiber, hydrogen peroxide, hydrochloric acid and chitosan are reacted to prepare a bamboo fiber preform; N-isopropyl acrylamide, deionized water, ammonium persulfate and N,N,N,N-tetramethylethylenediamine are reacted to prepare a gel solution; the bamboo fiber preform, gel solution, 3-fluoropyridine-4-boric acid and dimethyl fumarate are reacted to prepare a modified bamboo fiber; 1,3-bis(3-glycidylpropyl)-1,1,3,3-tetramethyldisiloxane, di-n-butylamine, octamethylcyclotetrasiloxane and tetramethylammonium hydroxide are reacted to prepare a terminal hydroxyl silicone oil; polyethylene glycol, isophorone diisocyanate and dibutyltin dilaurate are reacted, and a crosslinking agent 202 is added to prepare a polyurethane emulsion; polyurethane emulsion, terminal hydroxyl silicone oil and deionized water are reacted to prepare a modified polyurethane emulsion; and a breathable cool and comfortable fabric is prepared.

[0004] The technical problem to be solved by the present invention is to improve the air permeability of spandex, so that the spandex has the characteristics of air permeability, cooling and comfort, thereby improving the comfort of the wearer.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A preparation process of a breathable, cool and comfortable fabric comprises the following steps:

[0007] (1) mixing bamboo fiber, hydrogen peroxide and hydrochloric acid aqueous solution for reaction, adding chitosan, ultrasonically mixing, filtering, washing and drying to obtain a bamboo fiber preform;

[0008] (2) adding N-isopropylacrylamide and deionized water into a polymerization kettle, stirring, passing nitrogen into the polymerization kettle, adding ammonium persulfate and N,N,N,N-tetramethylethylenediamine, reacting under a nitrogen atmosphere, adding calcium chloride solution after the reaction is completed, standing for 24 hours, taking out the sample, and soaking it in deionized water for 48 hours to obtain a gel solution;

[0009] (3) immersing the bamboo fiber preform in the gel solution, adding 3-fluoropyridine-4-boric acid, stirring for 5-8 hours, adding dimethyl fumarate, and ultrasonically mixing for 0.5-1 hour under ice bath conditions at 0-5° C. to obtain modified bamboo fiber;

[0010] (4) 1,3-bis(3-glycidylpropyl)-1,1,3,3-tetramethyldisiloxane and di-n-butylamine were mixed, reacted at 85° C. for 4 h, octamethylcyclotetrasiloxane and tetramethylammonium hydroxide were added, and the temperature was raised to 120° C. and reacted for 2 h to obtain terminal hydroxyl silicone oil;

[0011] (5) Add polyethylene glycol to the reactor, vacuum dehydrate at 120° C. for 2 h, cool to 60-70° C., add isophorone diisocyanate and dibutyltin dilaurate, react at 70° C. for 2 h, add crosslinking agent 202, control the temperature and react for 1 h to obtain a polyurethane emulsion;

[0012] (6) mixing the polyurethane emulsion and the terminal hydroxyl silicone oil, heating them for reaction, adding deionized water, and stirring to obtain a modified polyurethane emulsion;

[0013] (7) jet spinning, curing, collecting and arranging the modified polyurethane emulsion to obtain modified polyurethane fibers;

[0014] (8) The modified bamboo fiber is prepared into modified bamboo fiber yarn, and the modified polyurethane fiber is prepared into modified polyurethane fiber yarn, and then the modified bamboo fiber yarn and the modified polyurethane fiber yarn are woven to obtain the breathable, cool and comfortable fabric.

[0015] As a preferred technical solution of the present invention, in step (1), the mass ratio of the bamboo fiber, hydrogen peroxide, hydrochloric acid aqueous solution, and chitosan is 1-2:0.5-0.8:1:0.15-0.25; the ultrasonic mixing time is 25-45 min; and the concentration of the hydrochloric acid aqueous solution is 2-4 mol / L.

[0016] As a preferred technical solution of the present invention, in step (2), the stirring refers to stirring at a speed of 350-380 rpm / min for 30-60 min; the time for passing nitrogen into the polymerization kettle is 30 min; the mass concentration of the calcium chloride solution is 0.1 g / mL;

[0017] The dosage ratio of the N-isopropylacrylamide, deionized water, calcium chloride solution, ammonium persulfate, and N,N,N,N-tetramethylethylenediamine is 2.5-10 g: 20 mL: 50 mL: 20-120 mg: 6 μL.

[0018] As a preferred technical solution of the present invention, in step (3), the mass ratio of the bamboo fiber preform, the gel solution, 3-fluoropyridine-4-boric acid, and dimethyl fumarate is 1-2: 5-10: 0.1-0.3: 0.5-0.8.

[0019] As a preferred technical solution of the present invention, in step (4), the mass ratio of 1,3-bis(3-glycidylpropyl)-1,1,3,3-tetramethyldisiloxane, di-n-butylamine, octamethylcyclotetrasiloxane and tetramethylammonium hydroxide is 0.5-1:1-2:0.2-0.4:0.01-0.02.

[0020] As a preferred technical solution of the present invention, in step (5), the mass ratio of the polyethylene glycol, isophorone diisocyanate, dibutyltin dilaurate, and the cross-linking agent 202 is 1:1:0.02-0.06:0.1-0.3.

[0021] As a preferred technical solution of the present invention, in step (6), the dosage ratio of the polyurethane emulsion, the terminal hydroxyl silicone oil and the deionized water is 1 mol:1 mol:50-100 ml.

[0022] As a preferred technical solution of the present invention, in step (8), the mass ratio of the modified bamboo fiber to the modified polyurethane fiber is 1-2:3-5.

[0023] As a preferred technical solution of the present invention, in step (6), the heating reaction refers to mixing the polyurethane emulsion and the terminal hydroxyl silicone oil at 80°C for 4 hours, and the stirring refers to stirring at 120°C for 2-3 minutes.

[0024] A breathable, cool and comfortable fabric made by the preparation process.

[0025] Beneficial effects of the present invention:

[0026] The present invention discloses a breathable and cool comfortable fabric and a preparation process thereof. The breathable and cool comfortable fabric is made by mixing and weaving amide gel modified bamboo fiber and modified polyurethane fiber. The amide gel bamboo fiber is introduced, and has excellent wrinkle resistance and drying speed, improves the air permeability and antibacterial properties of the fabric, keeps the fabric dry and odor-free, and improves the comfort of wearing experience.

[0027] Furthermore, since bamboo fiber is easy to shrink, the network-like amide gel is introduced to form a strong chemical bond with the fiber structure of bamboo fiber to lock the cellulose molecular chain, thereby reducing the shrinkage of bamboo fiber fabrics;

[0028] Furthermore, although bamboo fiber has a certain antibacterial effect, bamboo fiber is not a broad-spectrum antibacterial material. Therefore, in order to improve the antibacterial performance of the fabric and prevent bacteria from breeding and causing the fabric to produce odor, which reduces the comfort of the wearer, a broad-spectrum antibacterial agent is added to improve the antibacterial effect of the fabric; however, the antibacterial agent has a poor adhesion effect on the bamboo fiber, which reduces the antibacterial effect. The antibacterial agent is attached to the gel pores under ice bath conditions through the low-temperature expansion property of amide gel, thereby improving the adhesion of the antibacterial agent and improving the antibacterial effect;

[0029] Furthermore, the polyurethane is modified by adding terminal hydroxyl silicone oil, and the terminal hydroxyl silicone oil and the polyurethane are firmly connected together by forming a chemical bond through the reaction between the hydroxyl functional group and isocyanate, so that the surface of the prepared fabric is smoother, softer, and more wrinkle-resistant, and the air circulation is improved, and the cool and comfortable performance is enhanced. DETAILED DESCRIPTION

[0030] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in combination with the embodiments.

[0031] Example 1

[0032] Preparation of breathable, cool and comfortable fabric:

[0033] (1) mixing bamboo fiber, hydrogen peroxide, and hydrochloric acid aqueous solution for reaction, adding chitosan, ultrasonically mixing, filtering, washing, and drying to obtain a bamboo fiber preform; the mass ratio of the bamboo fiber, hydrogen peroxide, hydrochloric acid aqueous solution, and chitosan is 1:0.5:1:0.15; the ultrasonic mixing time is 25 minutes; and the concentration of the hydrochloric acid aqueous solution is 2 mol / L;

[0034] (2) adding N-isopropylacrylamide and deionized water into a polymerization kettle, stirring, passing nitrogen into the polymerization kettle, adding ammonium persulfate and N,N,N,N-tetramethylethylenediamine, reacting under a nitrogen atmosphere, adding calcium chloride solution after the reaction is completed, standing for 24 hours, taking out the sample, and soaking it in deionized water for 48 hours to obtain a gel solution;

[0035] The stirring refers to stirring at a speed of 350-380 rpm / min for 30-60 min; the time for passing nitrogen into the polymerization kettle is 30 min; the mass concentration of the calcium chloride solution is 0.1 g / mL;

[0036] The dosage ratio of N-isopropylacrylamide, deionized water, calcium chloride solution, ammonium persulfate, and N,N,N,N-tetramethylethylenediamine is 2.5 g: 20 mL: 50 mL: 20 mg: 6 μL;

[0037] (3) immersing the bamboo fiber preform in the gel solution, adding 3-fluoropyridine-4-boric acid, stirring for 5 hours, adding dimethyl fumarate, and ultrasonically mixing for 1 hour under 0° C. ice bath conditions to obtain modified bamboo fiber; the mass ratio of the bamboo fiber preform, gel solution, 3-fluoropyridine-4-boric acid, and dimethyl fumarate is 1:5:0.1:0.5;

[0038] (4) 1,3-bis(3-glycidylpropyl)-1,1,3,3-tetramethyldisiloxane and di-n-butylamine were mixed, reacted at 85° C. for 4 h, octamethylcyclotetrasiloxane and tetramethylammonium hydroxide were added, the temperature was raised to 120° C. and reacted for 2 h to obtain terminal hydroxyl silicone oil; the mass ratio of the 1,3-bis(3-glycidylpropyl)-1,1,3,3-tetramethyldisiloxane, di-n-butylamine, octamethylcyclotetrasiloxane and tetramethylammonium hydroxide was 0.5:1:0.2:0.01;

[0039] (5) adding polyethylene glycol to the reactor, vacuum dehydrating at 120° C. for 2 h, cooling to 60° C., adding isophorone diisocyanate and dibutyltin dilaurate, reacting at 70° C. for 2 h, adding crosslinking agent 202, controlling the temperature to react for 1 h, and obtaining a polyurethane emulsion; the mass ratio of the polyethylene glycol, isophorone diisocyanate, dibutyltin dilaurate, and crosslinking agent 202 is 1:1:0.02:0.1;

[0040] (6) mixing the polyurethane emulsion and the terminal hydroxyl silicone oil for heating reaction, adding deionized water, stirring, and obtaining a modified polyurethane emulsion; the amount ratio of the polyurethane emulsion, the terminal hydroxyl silicone oil, and the deionized water is 1 mol:1 mol:50 ml; the heating reaction refers to mixing the polyurethane emulsion and the terminal hydroxyl silicone oil for reaction at 80° C. for 4 hours, and the stirring refers to stirring at 120° C. for 2 minutes;

[0041] (7) jet spinning, curing, collecting and arranging the modified polyurethane emulsion to obtain modified polyurethane fibers;

[0042] (8) The modified bamboo fiber is prepared into modified bamboo fiber yarn, and the modified polyurethane fiber is prepared into modified polyurethane fiber yarn, and then the modified bamboo fiber yarn and the modified polyurethane fiber yarn are woven to obtain the breathable, cool and comfortable fabric; the mass ratio of the modified bamboo fiber to the modified polyurethane fiber is 1:3.

[0043] Example 2

[0044] Preparation of breathable, cool and comfortable fabric:

[0045] (1) mixing bamboo fiber, hydrogen peroxide, and hydrochloric acid aqueous solution for reaction, adding chitosan, ultrasonically mixing, filtering, washing, and drying to obtain a bamboo fiber preform; the mass ratio of the bamboo fiber, hydrogen peroxide, hydrochloric acid aqueous solution, and chitosan is 1.5:0.65:1:0.2; the ultrasonic mixing time is 35 minutes; and the concentration of the hydrochloric acid aqueous solution is 3 mol / L;

[0046] (2) adding N-isopropylacrylamide and deionized water into a polymerization kettle, stirring, passing nitrogen into the polymerization kettle, adding ammonium persulfate and N,N,N,N-tetramethylethylenediamine, reacting under a nitrogen atmosphere, adding calcium chloride solution after the reaction is completed, standing for 24 hours, taking out the sample, and soaking it in deionized water for 48 hours to obtain a gel solution;

[0047] The stirring refers to stirring at a speed of 350-380 rpm / min for 30-60 min; the time for passing nitrogen into the polymerization kettle is 30 min; the mass concentration of the calcium chloride solution is 0.1 g / mL;

[0048] The dosage ratio of N-isopropylacrylamide, deionized water, calcium chloride solution, ammonium persulfate, and N,N,N,N-tetramethylethylenediamine is 5.5 g: 20 mL: 50 mL: 80 mg: 6 μL;

[0049] (3) immersing the bamboo fiber preform in the gel solution, adding 3-fluoropyridine-4-boric acid, stirring for 6.5 hours, adding dimethyl fumarate, and ultrasonically mixing for 0.75 hours under an ice bath condition of 2° C. to obtain modified bamboo fiber; the mass ratio of the bamboo fiber preform, gel solution, 3-fluoropyridine-4-boric acid, and dimethyl fumarate is 1.5:7:0.2:0.65;

[0050] (4) 1,3-bis(3-glycidylpropyl)-1,1,3,3-tetramethyldisiloxane and di-n-butylamine were mixed, reacted at 85° C. for 4 h, octamethylcyclotetrasiloxane and tetramethylammonium hydroxide were added, the temperature was raised to 120° C. and reacted for 2 h to obtain terminal hydroxyl silicone oil; the mass ratio of the 1,3-bis(3-glycidylpropyl)-1,1,3,3-tetramethyldisiloxane, di-n-butylamine, octamethylcyclotetrasiloxane and tetramethylammonium hydroxide was 0.7:1.5:0.3:0.015;

[0051] (5) adding polyethylene glycol to a reactor, vacuum dehydrating at 120° C. for 2 h, cooling to 65° C., adding isophorone diisocyanate and dibutyltin dilaurate, reacting at 70° C. for 2 h, adding a crosslinking agent 202, controlling the temperature to react for 1 h, and obtaining a polyurethane emulsion; the mass ratio of the polyethylene glycol, isophorone diisocyanate, dibutyltin dilaurate, and crosslinking agent 202 is 1:1:0.04:0.2;

[0052] (6) mixing the polyurethane emulsion and the terminal hydroxyl silicone oil for heating reaction, adding deionized water, stirring, and obtaining a modified polyurethane emulsion; the amount ratio of the polyurethane emulsion, the terminal hydroxyl silicone oil, and the deionized water is 1 mol:1 mol:75 ml; the heating reaction refers to mixing the polyurethane emulsion and the terminal hydroxyl silicone oil for reaction at 80° C. for 4 hours, and the stirring refers to stirring at 120° C. for 2.5 minutes;

[0053] (7) jet spinning, curing, collecting and arranging the modified polyurethane emulsion to obtain modified polyurethane fibers;

[0054] (8) The modified bamboo fiber is prepared into modified bamboo fiber yarn, and the modified polyurethane fiber is prepared into modified polyurethane fiber yarn, and then the modified bamboo fiber yarn and the modified polyurethane fiber yarn are woven to obtain the breathable, cool and comfortable fabric; the mass ratio of the modified bamboo fiber to the modified polyurethane fiber is 1.5:4.

[0055] Example 3

[0056] Preparation of breathable, cool and comfortable fabric:

[0057] (1) mixing bamboo fiber, hydrogen peroxide, and hydrochloric acid aqueous solution for reaction, adding chitosan, ultrasonically mixing, filtering, washing, and drying to obtain a bamboo fiber preform; the mass ratio of the bamboo fiber, hydrogen peroxide, hydrochloric acid aqueous solution, and chitosan is 2:0.8:1:0.25; the ultrasonic mixing time is 45 minutes; and the concentration of the hydrochloric acid aqueous solution is 4 mol / L;

[0058] (2) adding N-isopropylacrylamide and deionized water into a polymerization kettle, stirring, passing nitrogen into the polymerization kettle, adding ammonium persulfate and N,N,N,N-tetramethylethylenediamine, reacting under a nitrogen atmosphere, adding calcium chloride solution after the reaction is completed, standing for 24 hours, taking out the sample, and soaking it in deionized water for 48 hours to obtain a gel solution;

[0059] The stirring refers to stirring at a speed of 350-380 rpm / min for 30-60 min; the time for passing nitrogen into the polymerization kettle is 30 min; the mass concentration of the calcium chloride solution is 0.1 g / mL;

[0060] The dosage ratio of N-isopropylacrylamide, deionized water, calcium chloride solution, ammonium persulfate, and N,N,N,N-tetramethylethylenediamine is 10 g: 20 mL: 50 mL: 120 mg: 6 μL;

[0061] (3) immersing the bamboo fiber preform in the gel solution, adding 3-fluoropyridine-4-boric acid, stirring for 8 hours, adding dimethyl fumarate, and ultrasonically mixing for 0.5 hours under 5° C. ice bath conditions to obtain modified bamboo fiber; the mass ratio of the bamboo fiber preform, gel solution, 3-fluoropyridine-4-boric acid, and dimethyl fumarate is 2:10:0.3:0.8;

[0062] (4) 1,3-bis(3-glycidylpropyl)-1,1,3,3-tetramethyldisiloxane and di-n-butylamine were mixed, reacted at 85° C. for 4 h, octamethylcyclotetrasiloxane and tetramethylammonium hydroxide were added, the temperature was raised to 120° C. and reacted for 2 h to obtain terminal hydroxyl silicone oil; the mass ratio of the 1,3-bis(3-glycidylpropyl)-1,1,3,3-tetramethyldisiloxane, di-n-butylamine, octamethylcyclotetrasiloxane and tetramethylammonium hydroxide was 1:2:0.4:0.02;

[0063] (5) adding polyethylene glycol to a reactor, vacuum dehydrating at 120° C. for 2 h, cooling to 70° C., adding isophorone diisocyanate and dibutyltin dilaurate, reacting at 70° C. for 2 h, adding a crosslinking agent 202, controlling the temperature to react for 1 h, and obtaining a polyurethane emulsion; the mass ratio of the polyethylene glycol, isophorone diisocyanate, dibutyltin dilaurate, and crosslinking agent 202 is 1:1:0.06:0.3;

[0064] (6) mixing the polyurethane emulsion and the terminal hydroxyl silicone oil for heating reaction, adding deionized water, stirring, and obtaining a modified polyurethane emulsion; the amount ratio of the polyurethane emulsion, the terminal hydroxyl silicone oil, and the deionized water is 1 mol:1 mol:100 ml; the heating reaction refers to mixing the polyurethane emulsion and the terminal hydroxyl silicone oil for reaction at 80° C. for 4 hours, and the stirring refers to stirring at 120° C. for 3 minutes;

[0065] (7) jet spinning, curing, collecting and arranging the modified polyurethane emulsion to obtain modified polyurethane fibers;

[0066] (8) The modified bamboo fiber is prepared into modified bamboo fiber yarn, and the modified polyurethane fiber is prepared into modified polyurethane fiber yarn, and then the modified bamboo fiber yarn and the modified polyurethane fiber yarn are woven to obtain the breathable, cool and comfortable fabric; the mass ratio of the modified bamboo fiber to the modified polyurethane fiber is 2:5.

[0067] Comparative Example 1

[0068] Preparation of polyurethane fabric:

[0069] Add polyethylene glycol into the reactor, vacuum dehydrate at 120°C for 2h, cool to 60°C, add isophorone diisocyanate and dibutyltin dilaurate, react at 70°C for 2h, add crosslinking agent 202, control the temperature and react for 1h to obtain a polyurethane emulsion; the mass ratio of polyethylene glycol, isophorone diisocyanate, dibutyltin dilaurate and crosslinking agent 202 is 1:1:0.02:0.1;

[0070] The polyurethane emulsion is subjected to jet spinning, solidification, collection and finishing to obtain polyurethane fibers; the polyurethane fibers are prepared to obtain polyurethane fiber yarns, and the polyurethane fiber yarns are woven to obtain the polyurethane fabrics.

[0071] Comparative Example 2

[0072] Preparation of breathable, cool and comfortable fabric:

[0073] Add polyethylene glycol into the reactor, vacuum dehydrate at 120°C for 2h, cool to 60°C, add isophorone diisocyanate and dibutyltin dilaurate, react at 70°C for 2h, add crosslinking agent 202, control the temperature and react for 1h to obtain a polyurethane emulsion; the mass ratio of polyethylene glycol, isophorone diisocyanate, dibutyltin dilaurate and crosslinking agent 202 is 1:1:0.02:0.1;

[0074] The polyurethane emulsion is subjected to jet spinning, solidification, collection and finishing to obtain polyurethane fibers;

[0075] The bamboo fiber is prepared into bamboo fiber yarn, the polyurethane fiber is prepared into polyurethane fiber yarn, and then the bamboo fiber yarn and the polyurethane fiber yarn are woven to obtain the breathable, cool and comfortable fabric; the mass ratio of the bamboo fiber to the polyurethane fiber is 1:3.

[0076] Comparative Example 3

[0077] Preparation of breathable, cool and comfortable fabric:

[0078] The bamboo fiber, hydrogen peroxide and hydrochloric acid aqueous solution are mixed for reaction, chitosan is added, ultrasonic mixing is performed, filtering is performed, washing is performed, and drying is performed to obtain a bamboo fiber preform; the mass ratio of the bamboo fiber, hydrogen peroxide, hydrochloric acid aqueous solution and chitosan is 1:0.5:1:0.15; the ultrasonic mixing time is 25 minutes; the concentration of the hydrochloric acid aqueous solution is 2 mol / L;

[0079] Add N-isopropylacrylamide and deionized water into a polymerization kettle, stir, pass nitrogen into the polymerization kettle, add ammonium persulfate and N,N,N,N-tetramethylethylenediamine, react under a nitrogen atmosphere, add calcium chloride solution after the reaction, let stand for 24 hours, take out the sample, soak it in deionized water for 48 hours, and obtain a gel solution;

[0080] The stirring refers to stirring at a speed of 350-380 rpm / min for 30-60 min; the time for passing nitrogen into the polymerization kettle is 30 min; the mass concentration of the calcium chloride solution is 0.1 g / mL;

[0081] The dosage ratio of N-isopropylacrylamide, deionized water, calcium chloride solution, ammonium persulfate, and N,N,N,N-tetramethylethylenediamine is 2.5 g: 20 mL: 50 mL: 20 mg: 6 μL;

[0082] The bamboo fiber preform is immersed in the gel solution, 3-fluoropyridine-4-boric acid is added, and the mixture is stirred for 5 hours to obtain modified bamboo fiber; the mass ratio of the bamboo fiber preform, the gel solution, and the 3-fluoropyridine-4-boric acid is 1:5:0.1;

[0083] Add polyethylene glycol into the reactor, vacuum dehydrate at 120°C for 2h, cool to 60°C, add isophorone diisocyanate and dibutyltin dilaurate, react at 70°C for 2h, add crosslinking agent 202, control the temperature and react for 1h to obtain a polyurethane emulsion; the mass ratio of polyethylene glycol, isophorone diisocyanate, dibutyltin dilaurate and crosslinking agent 202 is 1:1:0.02:0.1;

[0084] The polyurethane emulsion is subjected to jet spinning, solidification, collection and finishing to obtain polyurethane fibers;

[0085] The modified bamboo fiber is prepared into modified bamboo fiber yarn, the polyurethane fiber is prepared into polyurethane fiber yarn, and then the modified bamboo fiber yarn and the polyurethane fiber yarn are woven to obtain the breathable, cool and comfortable fabric; the mass ratio of the modified bamboo fiber to the polyurethane fiber is 1:3.

[0086] Comparative Example 4

[0087] Preparation of breathable, cool and comfortable fabric:

[0088] The bamboo fiber, hydrogen peroxide and hydrochloric acid aqueous solution are mixed for reaction, chitosan is added, ultrasonic mixing is performed, filtering is performed, washing is performed, and drying is performed to obtain a bamboo fiber preform; the mass ratio of the bamboo fiber, hydrogen peroxide, hydrochloric acid aqueous solution and chitosan is 1:0.5:1:0.15; the ultrasonic mixing time is 25 minutes; the concentration of the hydrochloric acid aqueous solution is 2 mol / L;

[0089] Add N-isopropylacrylamide and deionized water into a polymerization kettle, stir, pass nitrogen into the polymerization kettle, add ammonium persulfate and N,N,N,N-tetramethylethylenediamine, react under a nitrogen atmosphere, add calcium chloride solution after the reaction, let stand for 24 hours, take out the sample, soak it in deionized water for 48 hours, and obtain a gel solution;

[0090] The stirring refers to stirring at a speed of 350-380 rpm / min for 30-60 min; the time for passing nitrogen into the polymerization kettle is 30 min; the mass concentration of the calcium chloride solution is 0.1 g / mL;

[0091] The dosage ratio of N-isopropylacrylamide, deionized water, calcium chloride solution, ammonium persulfate, and N,N,N,N-tetramethylethylenediamine is 2.5 g: 20 mL: 50 mL: 20 mg: 6 μL;

[0092] The bamboo fiber preform is immersed in the gel solution, 3-fluoropyridine-4-boric acid is added, stirred for 5 hours, dimethyl fumarate is added, and ultrasonic mixing is performed for 1 hour under 0° C. ice bath conditions to obtain modified bamboo fiber; the mass ratio of the bamboo fiber preform, gel solution, 3-fluoropyridine-4-boric acid, and dimethyl fumarate is 1:5:0.1:0.5;

[0093] Add polyethylene glycol into the reactor, vacuum dehydrate at 120°C for 2h, cool to 60°C, add isophorone diisocyanate and dibutyltin dilaurate, react at 70°C for 2h, add crosslinking agent 202, control the temperature and react for 1h to obtain a polyurethane emulsion; the mass ratio of polyethylene glycol, isophorone diisocyanate, dibutyltin dilaurate and crosslinking agent 202 is 1:1:0.02:0.1;

[0094] The polyurethane emulsion is subjected to jet spinning, solidification, collection and finishing to obtain polyurethane fibers;

[0095] The modified bamboo fiber is prepared into modified bamboo fiber yarn, the polyurethane fiber is prepared into polyurethane fiber yarn, and then the modified bamboo fiber yarn and the polyurethane fiber yarn are woven to obtain the breathable, cool and comfortable fabric; the mass ratio of the modified bamboo fiber to the polyurethane fiber is 1:3.

[0096] Comparative Example 5

[0097] Preparation of breathable, cool and comfortable fabric:

[0098] 1,3-bis(3-glycidylpropyl)-1,1,3,3-tetramethyldisiloxane and di-n-butylamine were mixed, reacted at 85°C for 4 hours, octamethylcyclotetrasiloxane and tetramethylammonium hydroxide were added, the temperature was raised to 120°C and reacted for 2 hours to obtain terminal hydroxyl silicone oil; the mass ratio of 1,3-bis(3-glycidylpropyl)-1,1,3,3-tetramethyldisiloxane, di-n-butylamine, octamethylcyclotetrasiloxane and tetramethylammonium hydroxide was 0.5:1:0.2:0.01;

[0099] Add polyethylene glycol into the reactor, vacuum dehydrate at 120°C for 2h, cool to 60°C, add isophorone diisocyanate and dibutyltin dilaurate, react at 70°C for 2h, add crosslinking agent 202, control the temperature and react for 1h to obtain a polyurethane emulsion; the mass ratio of polyethylene glycol, isophorone diisocyanate, dibutyltin dilaurate and crosslinking agent 202 is 1:1:0.02:0.1;

[0100] The polyurethane emulsion and the terminal hydroxyl silicone oil are mixed and heated for reaction, and deionized water is added and stirred to obtain a modified polyurethane emulsion; the amount ratio of the polyurethane emulsion, the terminal hydroxyl silicone oil and the deionized water is 1 mol:1 mol:50 ml; the heating reaction refers to mixing the polyurethane emulsion and the terminal hydroxyl silicone oil for reaction at 80°C for 4 hours, and the stirring refers to stirring at 120°C for 2 minutes;

[0101] The modified polyurethane emulsion is subjected to jet spinning, solidification, collection and finishing to obtain modified polyurethane fibers;

[0102] The modified polyurethane fiber is prepared into modified polyurethane fiber yarn, and the modified polyurethane fiber yarn is woven to obtain the breathable, cool and comfortable fabric.

[0103] Comparative Example 6

[0104] Preparation of breathable, cool and comfortable fabric:

[0105] 1,3-bis(3-glycidylpropyl)-1,1,3,3-tetramethyldisiloxane and di-n-butylamine were mixed, reacted at 85°C for 4 hours, octamethylcyclotetrasiloxane and tetramethylammonium hydroxide were added, the temperature was raised to 120°C and reacted for 2 hours to obtain terminal hydroxyl silicone oil; the mass ratio of 1,3-bis(3-glycidylpropyl)-1,1,3,3-tetramethyldisiloxane, di-n-butylamine, octamethylcyclotetrasiloxane and tetramethylammonium hydroxide was 0.5:1:0.2:0.01;

[0106] Add polyethylene glycol into the reactor, vacuum dehydrate at 120°C for 2h, cool to 60°C, add isophorone diisocyanate and dibutyltin dilaurate, react at 70°C for 2h, add crosslinking agent 202, control the temperature and react for 1h to obtain a polyurethane emulsion; the mass ratio of polyethylene glycol, isophorone diisocyanate, dibutyltin dilaurate and crosslinking agent 202 is 1:1:0.02:0.1;

[0107] The polyurethane emulsion and the terminal hydroxyl silicone oil are mixed and heated for reaction, and deionized water is added and stirred to obtain a modified polyurethane emulsion; the amount ratio of the polyurethane emulsion, the terminal hydroxyl silicone oil and the deionized water is 1 mol:1 mol:50 ml; the heating reaction refers to mixing the polyurethane emulsion and the terminal hydroxyl silicone oil for reaction at 80°C for 4 hours, and the stirring refers to stirring at 120°C for 2 minutes;

[0108] The modified polyurethane emulsion is subjected to jet spinning, solidification, collection and finishing to obtain modified polyurethane fibers;

[0109] The bamboo fiber is prepared into bamboo fiber yarn, the modified polyurethane fiber is prepared into modified polyurethane fiber yarn, and then the bamboo fiber yarn and the modified polyurethane fiber yarn are woven to obtain the breathable, cool and comfortable fabric; the mass ratio of the bamboo fiber to the modified polyurethane fiber is 1:3.

[0110] Comparative Example 7

[0111] Preparation of breathable, cool and comfortable fabric:

[0112] The bamboo fiber, hydrogen peroxide and hydrochloric acid aqueous solution are mixed for reaction, chitosan is added, ultrasonic mixing is performed, filtering is performed, washing is performed, and drying is performed to obtain a bamboo fiber preform; the mass ratio of the bamboo fiber, hydrogen peroxide, hydrochloric acid aqueous solution and chitosan is 1:0.5:1:0.15; the ultrasonic mixing time is 25 minutes; the concentration of the hydrochloric acid aqueous solution is 2 mol / L;

[0113] Add N-isopropylacrylamide and deionized water into a polymerization kettle, stir, pass nitrogen into the polymerization kettle, add ammonium persulfate and N,N,N,N-tetramethylethylenediamine, react under a nitrogen atmosphere, add calcium chloride solution after the reaction, let stand for 24 hours, take out the sample, soak it in deionized water for 48 hours, and obtain a gel solution;

[0114] The stirring refers to stirring at a speed of 350-380 rpm / min for 30-60 min; the time for passing nitrogen into the polymerization kettle is 30 min; the mass concentration of the calcium chloride solution is 0.1 g / mL;

[0115] The dosage ratio of N-isopropylacrylamide, deionized water, calcium chloride solution, ammonium persulfate, and N,N,N,N-tetramethylethylenediamine is 2.5 g: 20 mL: 50 mL: 20 mg: 6 μL;

[0116] The bamboo fiber preform is immersed in the gel solution, 3-fluoropyridine-4-boric acid is added, and the mixture is stirred for 5 hours to obtain modified bamboo fiber; the mass ratio of the bamboo fiber preform, the gel solution, and the 3-fluoropyridine-4-boric acid is 1:5:0.1;

[0117] 1,3-bis(3-glycidylpropyl)-1,1,3,3-tetramethyldisiloxane and di-n-butylamine were mixed, reacted at 85°C for 4 hours, octamethylcyclotetrasiloxane and tetramethylammonium hydroxide were added, the temperature was raised to 120°C and reacted for 2 hours to obtain terminal hydroxyl silicone oil; the mass ratio of 1,3-bis(3-glycidylpropyl)-1,1,3,3-tetramethyldisiloxane, di-n-butylamine, octamethylcyclotetrasiloxane and tetramethylammonium hydroxide was 0.5:1:0.2:0.01;

[0118] Add polyethylene glycol into the reactor, vacuum dehydrate at 120°C for 2h, cool to 60°C, add isophorone diisocyanate and dibutyltin dilaurate, react at 70°C for 2h, add crosslinking agent 202, control the temperature and react for 1h to obtain a polyurethane emulsion; the mass ratio of polyethylene glycol, isophorone diisocyanate, dibutyltin dilaurate and crosslinking agent 202 is 1:1:0.02:0.1;

[0119] The polyurethane emulsion and the terminal hydroxyl silicone oil are mixed and heated for reaction, and deionized water is added and stirred to obtain a modified polyurethane emulsion; the amount ratio of the polyurethane emulsion, the terminal hydroxyl silicone oil and the deionized water is 1 mol:1 mol:50 ml; the heating reaction refers to mixing the polyurethane emulsion and the terminal hydroxyl silicone oil for reaction at 80°C for 4 hours, and the stirring refers to stirring at 120°C for 2 minutes;

[0120] The modified polyurethane emulsion is subjected to jet spinning, solidification, collection and finishing to obtain modified polyurethane fibers;

[0121] The modified bamboo fiber is prepared into modified bamboo fiber yarn, the modified polyurethane fiber is prepared into modified polyurethane fiber yarn, and then the modified bamboo fiber yarn and the modified polyurethane fiber yarn are woven to obtain the breathable, cool and comfortable fabric; the mass ratio of the modified bamboo fiber to the modified polyurethane fiber is 1:3.

[0122] Comparative Example 8

[0123] Preparation of breathable, cool and comfortable fabric:

[0124] The bamboo fiber, hydrogen peroxide and hydrochloric acid aqueous solution are mixed for reaction, chitosan is added, ultrasonic mixing is performed, filtering is performed, washing is performed, and drying is performed to obtain a bamboo fiber preform; the mass ratio of the bamboo fiber, hydrogen peroxide, hydrochloric acid aqueous solution and chitosan is 1:0.5:1:0.15; the ultrasonic mixing time is 25 minutes; the concentration of the hydrochloric acid aqueous solution is 2 mol / L;

[0125] Add N-isopropylacrylamide and deionized water into a polymerization kettle, stir, pass nitrogen into the polymerization kettle, add ammonium persulfate and N,N,N,N-tetramethylethylenediamine, react under a nitrogen atmosphere, add calcium chloride solution after the reaction, let stand for 24 hours, take out the sample, soak it in deionized water for 48 hours, and obtain a gel solution;

[0126] The stirring refers to stirring at a speed of 350-380 rpm / min for 30-60 min; the time for passing nitrogen into the polymerization kettle is 30 min; the mass concentration of the calcium chloride solution is 0.1 g / mL;

[0127] The dosage ratio of N-isopropylacrylamide, deionized water, calcium chloride solution, ammonium persulfate, and N,N,N,N-tetramethylethylenediamine is 2.5 g: 20 mL: 50 mL: 20 mg: 6 μL;

[0128] The bamboo fiber preform is immersed in the gel solution, 3-fluoropyridine-4-boric acid is added, and the mixture is stirred for 5 hours to obtain a bamboo fiber intermediate, and the bamboo fiber intermediate is immersed in dimethyl fumarate for 10-20 hours, and the mixture is dried to obtain a modified bamboo fiber; the mass ratio of the bamboo fiber preform, the gel solution, and the 3-fluoropyridine-4-boric acid is 1:5:0.1;

[0129] Add polyethylene glycol into the reactor, vacuum dehydrate at 120°C for 2h, cool to 60°C, add isophorone diisocyanate and dibutyltin dilaurate, react at 70°C for 2h, add crosslinking agent 202, control the temperature and react for 1h to obtain a polyurethane emulsion; the mass ratio of polyethylene glycol, isophorone diisocyanate, dibutyltin dilaurate and crosslinking agent 202 is 1:1:0.02:0.1;

[0130] The polyurethane emulsion is subjected to jet spinning, solidification, collection and finishing to obtain polyurethane fibers;

[0131] The modified bamboo fiber is prepared into modified bamboo fiber yarn, the polyurethane fiber is prepared into polyurethane fiber yarn, and then the modified bamboo fiber yarn and the polyurethane fiber yarn are woven to obtain the breathable, cool and comfortable fabric; the mass ratio of the modified bamboo fiber to the polyurethane fiber is 1:3.

[0132] Comparative Example 9

[0133] Preparation of breathable, cool and comfortable fabric:

[0134] (1) mixing bamboo fiber, hydrogen peroxide, and hydrochloric acid aqueous solution for reaction, adding chitosan, ultrasonically mixing, filtering, washing, and drying to obtain a bamboo fiber preform; the mass ratio of the bamboo fiber, hydrogen peroxide, hydrochloric acid aqueous solution, and chitosan is 1:0.5:1:0.15; the ultrasonic mixing time is 25 minutes; and the concentration of the hydrochloric acid aqueous solution is 2 mol / L;

[0135] (2) adding N-isopropylacrylamide and deionized water into a polymerization kettle, stirring, passing nitrogen into the polymerization kettle, adding ammonium persulfate and N,N,N,N-tetramethylethylenediamine, reacting under a nitrogen atmosphere, adding calcium chloride solution after the reaction is completed, standing for 24 hours, taking out the sample, and soaking it in deionized water for 48 hours to obtain a gel solution;

[0136] The stirring refers to stirring at a speed of 350-380 rpm / min for 30-60 min; the time for passing nitrogen into the polymerization kettle is 30 min; the mass concentration of the calcium chloride solution is 0.1 g / mL;

[0137] The dosage ratio of N-isopropylacrylamide, deionized water, calcium chloride solution, ammonium persulfate, and N,N,N,N-tetramethylethylenediamine is 2.5 g: 20 mL: 50 mL: 20 mg: 6 μL;

[0138] (3) soaking the bamboo fiber preform in the gel solution, adding 3-fluoropyridine-4-boric acid, stirring for 5 hours to obtain a bamboo fiber intermediate, soaking the bamboo fiber intermediate in dimethyl fumarate for 10-20 hours, drying, and obtaining modified bamboo fiber; the mass ratio of the bamboo fiber preform, the gel solution, and the 3-fluoropyridine-4-boric acid is 1:5:0.1;

[0139] (4) 1,3-bis(3-glycidylpropyl)-1,1,3,3-tetramethyldisiloxane and di-n-butylamine were mixed, reacted at 85° C. for 4 h, octamethylcyclotetrasiloxane and tetramethylammonium hydroxide were added, the temperature was raised to 120° C. and reacted for 2 h to obtain terminal hydroxyl silicone oil; the mass ratio of the 1,3-bis(3-glycidylpropyl)-1,1,3,3-tetramethyldisiloxane, di-n-butylamine, octamethylcyclotetrasiloxane and tetramethylammonium hydroxide was 0.5:1:0.2:0.01;

[0140] (5) adding polyethylene glycol to the reactor, vacuum dehydrating at 120° C. for 2 h, cooling to 60° C., adding isophorone diisocyanate and dibutyltin dilaurate, reacting at 70° C. for 2 h, adding crosslinking agent 202, controlling the temperature to react for 1 h, and obtaining a polyurethane emulsion; the mass ratio of the polyethylene glycol, isophorone diisocyanate, dibutyltin dilaurate, and crosslinking agent 202 is 1:1:0.02:0.1;

[0141] (6) mixing the polyurethane emulsion and the terminal hydroxyl silicone oil for heating reaction, adding deionized water, stirring, and obtaining a modified polyurethane emulsion; the amount ratio of the polyurethane emulsion, the terminal hydroxyl silicone oil, and the deionized water is 1 mol:1 mol:50 ml; the heating reaction refers to mixing the polyurethane emulsion and the terminal hydroxyl silicone oil for reaction at 80° C. for 4 hours, and the stirring refers to stirring at 120° C. for 2 minutes;

[0142] (7) jet spinning, curing, collecting and arranging the modified polyurethane emulsion to obtain modified polyurethane fibers;

[0143] (8) The modified bamboo fiber is prepared into modified bamboo fiber yarn, and the modified polyurethane fiber is prepared into modified polyurethane fiber yarn, and then the modified bamboo fiber yarn and the modified polyurethane fiber yarn are woven to obtain the breathable, cool and comfortable fabric; the mass ratio of the modified bamboo fiber to the modified polyurethane fiber is 1:3.

[0144] Performance Testing

[0145] Conduct air permeability test according to GB / T 5453-1997;

[0146] Conduct cooling performance test according to standard GB / T 35263-2017;

[0147] The antibacterial performance test was carried out in accordance with standard GB / T 39104.2-2020.

[0148] The fabrics obtained in Examples 1-3 and Comparative Examples 1-9 prepared on the basis of Example 1 were subjected to performance tests according to the above standards. The test results are shown in Table 1 below:

[0149] Table 1

[0150]

[0151]

[0152] It can be seen from Table 1 that the antibacterial performance of the fabric prepared in Comparative Example 1 is the worst, the antibacterial performance of the fabrics prepared in Comparative Examples 2, 5, and 6 is poor, but the antibacterial performance is better than that of Comparative Example 1, and the antibacterial performance of Comparative Examples 3, 7, 8, and 9 is lower than that of Example 1;

[0153] The fabric prepared in comparative example 1 has the worst air permeability, resulting in the worst cooling performance; the air permeability of the fabrics obtained in comparative examples 5, 2, 3, 6, 8, 9, 4, and 7 is improved successively, so that the cooling performance of the fabrics obtained in comparative examples 5, 2, 3, 6, 8, 9, 4, and 7 is improved successively.

[0154] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A preparation process for a breathable, cool and comfortable fabric, characterized in that: The following steps are involved: (1) mixing bamboo fiber, hydrogen peroxide and hydrochloric acid aqueous solution for reaction, adding chitosan, ultrasonically mixing, filtering, washing and drying to obtain a bamboo fiber preform; (2) adding N-isopropylacrylamide and deionized water into a polymerization kettle, stirring, passing nitrogen into the polymerization kettle, adding ammonium persulfate and N,N,N,N-tetramethylethylenediamine, reacting under a nitrogen atmosphere, adding calcium chloride solution after the reaction is completed, standing for 24 hours, taking out the sample, and soaking it in deionized water for 48 hours to obtain a gel solution; (3) immersing the bamboo fiber preform in the gel solution, adding 3-fluoropyridine-4-boric acid, stirring for 5-8 hours, adding dimethyl fumarate, and ultrasonically mixing for 0.5-1 hour under ice bath conditions at 0-5° C. to obtain modified bamboo fiber; (4) 1,3-bis(3-glycidylpropyl)-1,1,3,3-tetramethyldisiloxane and di-n-butylamine were mixed, reacted at 85° C. for 4 h, octamethylcyclotetrasiloxane and tetramethylammonium hydroxide were added, and the temperature was raised to 120° C. and reacted for 2 h to obtain terminal hydroxyl silicone oil; (5) Add polyethylene glycol to the reactor, vacuum dehydrate at 120° C. for 2 h, cool to 60-70° C., add isophorone diisocyanate and dibutyltin dilaurate, react at 70° C. for 2 h, add crosslinking agent 202, control the temperature and react for 1 h to obtain a polyurethane emulsion; (6) mixing the polyurethane emulsion and the terminal hydroxyl silicone oil, heating them for reaction, adding deionized water, and stirring to obtain a modified polyurethane emulsion; (7) jet spinning, curing, collecting and arranging the modified polyurethane emulsion to obtain modified polyurethane fibers; (8) The modified bamboo fiber is prepared into modified bamboo fiber yarn, and the modified polyurethane fiber is prepared into modified polyurethane fiber yarn, and then the modified bamboo fiber yarn and the modified polyurethane fiber yarn are woven to obtain the breathable, cool and comfortable fabric.

2. The preparation process of a breathable, cool and comfortable fabric according to claim 1, characterized in that: In step (1), the mass ratio of the bamboo fiber, hydrogen peroxide, hydrochloric acid aqueous solution and chitosan is 1-2:0.5-0.8:1:0.15-0.25; the ultrasonic mixing time is 25-45min; and the concentration of the hydrochloric acid aqueous solution is 2-4mol / L.

3. The preparation process of a breathable, cool and comfortable fabric according to claim 1, characterized in that: In step (2), the stirring refers to stirring at a speed of 350-380 rpm / min for 30-60 min; the time for passing nitrogen into the polymerization kettle is 30 min; the mass concentration of the calcium chloride solution is 0.1 g / mL; The dosage ratio of the N-isopropylacrylamide, deionized water, calcium chloride solution, ammonium persulfate, and N,N,N,N-tetramethylethylenediamine is 2.5-10 g: 20 mL: 50 mL: 20-120 mg: 6 μL.

4. The preparation process of a breathable, cool and comfortable fabric according to claim 1, characterized in that: In step (3), the mass ratio of the bamboo fiber preform, the gel solution, 3-fluoropyridine-4-boric acid, and dimethyl fumarate is 1-2: 5-10: 0.1-0.3: 0.5-0.

8.

5. The preparation process of a breathable, cool and comfortable fabric according to claim 1, characterized in that: In step (4), the mass ratio of 1,3-bis(3-glycidylpropyl)-1,1,3,3-tetramethyldisiloxane, di-n-butylamine, octamethylcyclotetrasiloxane and tetramethylammonium hydroxide is 0.5-1:1-2:0.2-0.4:0.01-0.

02.

6. The process for preparing a breathable, cool and comfortable fabric according to claim 1, characterized in that: In step (5), the mass ratio of the polyethylene glycol, isophorone diisocyanate, dibutyltin dilaurate, and the crosslinking agent 202 is 1:1:0.02-0.06:0.1-0.

3.

7. The process for preparing a breathable, cool and comfortable fabric according to claim 1, characterized in that: In step (6), the dosage ratio of the polyurethane emulsion, the terminal hydroxyl silicone oil and the deionized water is 1 mol: 1 mol: 50-100 ml.

8. The process for preparing a breathable, cool and comfortable fabric according to claim 1, characterized in that: In step (8), the mass ratio of the modified bamboo fiber to the modified polyurethane fiber is 1-2:3-5.

9. The process for preparing a breathable, cool and comfortable fabric according to claim 1, characterized in that: In step (6), the heating reaction refers to mixing the polyurethane emulsion and the terminal hydroxyl silicone oil at 80° C. for 4 hours, and the stirring refers to stirring at 120° C. for 2-3 minutes.

10. A breathable, cool and comfortable fabric made by the preparation process according to any one of claims 1 to 9.

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