Preparation method of a polyester fabric with moisture absorption and sweat discharge functions

Abstract

The present invention belongs to the field of textile technology and relates to a preparation method of a polyester fabric with moisture absorption and sweat discharge functions. First, waste leather scraps are reacted with phosphoric acid to obtain a regenerated collagen modifier; then a coating slurry is prepared, and the polyester fabric is impregnated in the coating slurry and subjected to a two-stage standing treatment to obtain a polyester fabric with moisture absorption and sweat discharge functions; the coating slurry contains a regenerated collagen modifier, an anionic aqueous polyurethane dispersion, a polyisocyanate curing agent, and a crosslinking agent. The method of the present invention is simple and improves the moisture absorption and sweat discharge functions of the polyester fabric.

Description

Technical Field

[0001] The present invention belongs to the technical field of textiles and relates to a preparation method of a polyester fabric with moisture absorption and sweat discharge functions. Background Art

[0002] Due to its excellent properties such as good mechanical strength and elasticity, polyester has been widely used in the field of textile fabrics in recent years, such as tent fabrics, clothing, sofa fabrics, etc. However, for clothing fabrics, polyester's performance in terms of moisture absorption and sweat discharge is not ideal, which to a certain extent affects the comfort of the wearer. Therefore, it is particularly important to improve the moisture absorption and sweat discharge performance of polyester fabrics.

[0003] Patent application CN116397356A discloses a moisture-absorbing and breathable yarn, its textile process, and textile products. The products contain the following raw materials in parts by weight: 42 - 82 parts of polyester fiber, 14 - 34 parts of rayon fiber, 4 - 14 parts of tencel fiber, and 1 - 9 parts of spandex fiber. By mixing and spinning polyester fiber, rayon fiber, tencel fiber, and spandex fiber, this patent application aims to obtain a yarn that not only has excellent moisture absorption and sweat discharge effects, but also has good hand feeling and touch comfort, while maintaining good use durability and elasticity.

[0004] However, there are also some deficiencies in the preparation method of this product. On the one hand, the process route is relatively cumbersome and requires multiple steps, which leads to a decrease in production efficiency and an increase in cost. On the other hand, the moisture absorption and sweat discharge effect of this product needs to be further improved. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems existing in the prior art and provide a preparation method of a polyester fabric with moisture absorption and sweat discharge functions.

[0006] To achieve the above purpose, the technical scheme adopted by the present invention is as follows:

[0007] A preparation method of a polyester fabric with moisture absorption and sweat discharge functions, comprising the following steps:

[0008] S1. React waste leather scraps with phosphoric acid to obtain a regenerated collagen modifier;

[0009] S2. Prepare a coating slurry. After impregnating the polyester fabric in the coating slurry, let it stand at 50 - 70°C for 8 - 10 min, and then let it stand at 100 - 120°C for 3 - 5 min to obtain a polyester fabric with moisture absorption and sweat discharge functions;

[0010] By weight parts, the coating slurry contains 20-30 parts of regenerated collagen modifier, 70-80 parts of anionic aqueous polyurethane dispersion (for enhancing the strength of the coating), 2-3 parts of polyisocyanate curing agent, 3-6 parts of crosslinking agent, 1-2 parts of thickener, 0.2-0.4 parts of wetting agent, and 3-5 parts of catalyst. The crosslinking agent is carbodiimide and / or aziridine.

[0011] In the present invention, a coating slurry containing collagen fibers is selected to finish the polyester fabric. Collagen fibers are composed of many peptide chains, and some of the amino acids on these peptide chains carry carboxyl functional groups. These carboxyl groups are hydrophilic and can form hydrogen bonds with water molecules, thereby binding and retaining water molecules. When crosslinking treatment is carried out, specific crosslinking agents are introduced into the system, and they can chemically react with the carboxyl groups on the peptide chains, resulting in some carboxyl groups being "blocked" or "occupied", that is, they can no longer freely bind with water molecules. Since some carboxyl groups are occupied by the crosslinking agent, the water transmission paths or channels originally formed by these carboxyl groups will be disturbed or changed. These changes will affect the water transmission efficiency and path inside the collagen fibers. The present invention can endow the polyester fabric with an ideal moisture absorption and sweat discharge function by controlling the dosage of the crosslinking agent.

[0012] Collagen fibers are not heat-resistant. When using a coating slurry containing collagen fibers to finish the polyester fabric, it is a difficult problem to avoid damage to the collagen fibers during curing. The present invention solves this problem by designing a temperature gradient. First, it is left standing at 50-70 °C for 8-10 min. At this time, the hydroxyl groups on the collagen fibers react with the isocyanate groups of the polyisocyanate curing agent, improving the heat resistance of the collagen fibers. Then, it is left standing at 100-120 °C for 3-5 min. At this time, the carboxyl groups in the collagen fibers and the carboxyl groups in the anionic aqueous polyurethane dispersion react with the crosslinking agent.

[0013] As a preferred technical solution:

[0014] For the preparation method of a polyester fabric with moisture absorption and sweat discharge function as described above, the specific process of step S1 is as follows: Waste leather scraps are added to a phosphoric acid solution with a pH value of 3-4 (the solvent is water), and stirred and reacted at 60-80 °C for 8-10 h. After post-treatment, a regenerated collagen modifier with a molecular weight of 2000-3500 D is obtained. Among them, the post-treatment is to carry out cooling, filtration, neutralize the filtrate with alkali to a pH value of 7-8, transfer the filtrate to a dialysis bag with a molecular weight cut-off of 2000-3500 D for dialysis (the temperature is 40 °C and the time is 24 h), and then freeze-dry.

[0015] A preparation method of a polyester fabric with moisture absorption and sweat discharge function as described above. In step S1, the waste leather scraps are cowhide waste leather scraps or sheepskin waste leather scraps that have been successively subjected to impurity removal, water washing, and drying. The addition amount of chromium tanning agent during leather making is 2-6wt% of cowhide or sheepskin, and the weight ratio of waste leather scraps to phosphoric acid solution is 5-10:30-60.

[0016] A preparation method of a polyester fabric with moisture absorption and sweat discharge function as described above. In step S2, the anionic aqueous polyurethane dispersion is an aliphatic polyester-based aqueous polyurethane dispersion containing carboxyl groups or an aliphatic polyether-based aqueous polyurethane dispersion containing carboxyl groups.

[0017] A preparation method of a polyester fabric with moisture absorption and sweat discharge function as described above. In step S2, the polyisocyanate curing agent is isophorone diisocyanate trimer or hexamethylene diisocyanate trimer.

[0018] A preparation method of a polyester fabric with moisture absorption and sweat discharge function as described above. In step S2, the viscosity of the coating slurry is 200-500 mPa·s, the impregnation time of the polyester fabric in the coating slurry is 2-4 s, and the mass ratio of the polyester fabric to the coating slurry is 6-10:100.

[0019] A preparation method of a polyester fabric with moisture absorption and sweat discharge function as described above. The thickener is a polyurethane associative thickener; the wetting agent is an organosilicon wetting agent; the catalyst is dibutyltin dilaurate, bismuth neodecanoate, or bismuth isooctanoate.

[0020] A preparation method of a polyester fabric with moisture absorption and sweat discharge function as described above. The moisture evaporation rate of the polyester fabric with moisture absorption and sweat discharge function is 0.38-0.41 g·h -1 , and the water droplet diffusion time is 0 s.

[0021] Beneficial effects:

[0022] (1) The method of the present invention is simple, without complex technological processes, improving production efficiency and reducing costs.

[0023] (2) The polyester fabric prepared by the present invention has excellent moisture absorption and sweat discharge functions.

[0024] (3) The coating slurry of the present invention does not contain organic solvents, and the polyester fabric with moisture absorption and sweat discharge function obtained by impregnating the polyester fabric in the coating slurry does not contain volatile organic compounds (VOCs), belonging to an environmental protection product and meeting the requirements of industry sustainable development. Specific embodiments

[0025] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of this application.

[0026] The following are the test methods for relevant performance indicators in each example and comparative example:

[0027] Viscosity: Measured using an NDJ-8S digital display viscometer.

[0028] Moisture evaporation rate, water droplet diffusion time: Measured in accordance with GB / T 21655.1-2008 "Evaluation of moisture absorption and quick drying properties of textiles - Part 1: Single item combined test method".

[0029] Example 1

[0030] A preparation method of a polyester fabric with moisture absorption and sweat discharge functions, the specific steps are as follows:

[0031] (1) Preparation of raw materials;

[0032] Waste leather scraps: Cowhide waste leather scraps, the addition amount of chromium tanning agent (chromium powder, i.e., chromium in powder form, purchased from Ruijiang Metal Materials Co., Ltd., Qinghe County, the same below) during leather making is 2wt% of the cowhide;

[0033] Phosphoric acid aqueous solution: pH value is 3;

[0034] Alkali: NaOH;

[0035] Anionic aqueous polyurethane dispersion: Manufacturer is Guangzhou Ruilin New Materials, grade is R8402B;

[0036] Polyisocyanate curing agent: Hexamethylene diisocyanate trimer, manufacturer is Covestro, grade is Desmodur N3300;

[0037] Crosslinking agent: Aziridine;

[0038] Polyurethane associative thickener: Manufacturer is Sichuan Shikai New Materials, grade is ZC-280;

[0039] Organosilicon wetting agent: Manufacturer is Dow Corning, grade is OFX-5211;

[0040] Catalyst: Dibutyltin dilaurate;

[0041] Polyester fabric: Gram weight is 120g / m 2 ;

[0042] (2) Preparation of regenerated collagen modifier;

[0043] The waste leather scraps that have been successively subjected to impurity removal, water washing, and drying are added to an aqueous phosphoric acid solution, and stirred and reacted at 60 °C for 8 h. Then, it is successively cooled, filtered, the filtrate is neutralized with alkali to a pH value of 7, the filtrate is transferred to a dialysis bag for dialysis, and freeze-dried to obtain a regenerated collagen modifier with a molecular weight of 2000 D; wherein, the weight ratio of the waste leather scraps to the aqueous phosphoric acid solution is 5:30;

[0044] (3)Prepare the coating slurry;

[0045] By weight, 20 parts of the regenerated collagen modifier, 70 parts of an anionic aqueous polyurethane dispersion, 2 parts of a polyisocyanate curing agent, 3 parts of a crosslinking agent, 1 part of a polyurethane associative thickener, 0.2 part of a silicone wetting agent, and 3 parts of a catalyst are mixed evenly to obtain a coating slurry with a viscosity of 200 mPa·s;

[0046] (4)Prepare a polyester fabric with moisture absorption and sweat discharge functions;

[0047] The polyester fabric is impregnated in the coating slurry for 2 s, left standing at 50 °C for 8 min, and then left standing at 100 °C for 3 min to obtain a polyester fabric with moisture absorption and sweat discharge functions; wherein, the mass ratio of the polyester fabric to the coating slurry is 6:100.

[0048] The moisture evaporation rate of the finally prepared polyester fabric with moisture absorption and sweat discharge functions is 0.38 g·h -1 , and the water droplet diffusion time is 0 s.

[0049] Example 2

[0050] A preparation method of a polyester fabric with moisture absorption and sweat discharge functions, the specific steps are as follows:

[0051] (1)Preparation of raw materials;

[0052] Waste leather scraps: Cowhide waste leather scraps, the addition amount of chrome tanning agent (chrome powder) during leather making is 3 wt% of the cowhide;

[0053] Aqueous phosphoric acid solution: pH value is 3;

[0054] Alkali: NaOH;

[0055] Anionic aqueous polyurethane dispersion: The manufacturer is Anhui Femtosecond Chemical Industry, and the product number is FS-1516;

[0056] Polyisocyanate curing agent: Hexamethylene diisocyanate trimer, the manufacturer is Covestro, and the product number is Desmodur N3300;

[0057] Crosslinking agent: Carbodiimide;

[0058] Polyurethane associative thickener: Manufacturer is Sichuan Shikai New Materials, and the grade is ZC-330;

[0059] Silicone wetting agent: Manufacturer is Ruike Chemistry, and the grade is RK-8209;

[0060] Catalyst: Bismuth neodecanoate;

[0061] Polyester fabric: Gram weight is 140g / m 2 ;

[0062] (2) Prepare the regenerated collagen modifier;

[0063] Add the waste leather scraps that have been successively subjected to impurity removal, water washing, and drying to the phosphoric acid aqueous solution, stir and react at 70 °C for 9 h, and successively perform cooling, filtration, neutralize the filtrate with alkali to a pH value of 8, transfer the filtrate to a dialysis bag for dialysis, and freeze-dry to obtain a regenerated collagen modifier with a molecular weight of 3000D; among them, the weight ratio of waste leather scraps to the phosphoric acid aqueous solution is 8:40;

[0064] (3) Prepare the coating slurry;

[0065] By weight, mix 25 parts of the regenerated collagen modifier, 75 parts of anionic aqueous polyurethane dispersion, 3 parts of polyisocyanate curing agent, 5 parts of crosslinking agent, 2 parts of polyurethane associative thickener, 0.3 part of silicone wetting agent, and 4 parts of catalyst evenly to obtain a coating slurry with a viscosity of 300 mPa·s;

[0066] (4) Prepare a polyester fabric with moisture absorption and sweat discharge functions;

[0067] Immerse the polyester fabric in the coating slurry for 3 s, stand still at 60 °C for 9 min, and then stand still at 110 °C for 4 min to obtain a polyester fabric with moisture absorption and sweat discharge functions; among them, the mass ratio of the polyester fabric to the coating slurry is 7:100.

[0068] The moisture evaporation rate of the finally prepared polyester fabric with moisture absorption and sweat discharge functions is 0.39 g·h -1 , and the water droplet diffusion time is 0 s.

[0069] Example 3

[0070] A preparation method of a polyester fabric with moisture absorption and sweat discharge functions, the specific steps are as follows:

[0071] (1) Preparation of raw materials;

[0072] Waste leather scraps: Cowhide waste leather scraps, and the addition amount of chrome tanning agent (chrome powder) during leather making is 4 wt% of the cowhide;

[0073] Phosphoric acid aqueous solution: pH value is 4;

[0074] Base: NaOH;

[0075] Anionic aqueous polyurethane dispersion: manufactured by Anda Huatai, grade AH1502F;

[0076] Polyisocyanate curing agent: isophorone diisocyanate trimer, manufactured by Covestro, grade Desmodur Z4470;

[0077] Crosslinking agent: aziridine;

[0078] Polyurethane associative thickener: manufactured by Sichuan Shikai New Materials, grade ZC-230;

[0079] Silicone wetting agent: manufactured by Momentive Japan, grade 1211;

[0080] Catalyst: bismuth isooctanoate;

[0081] Polyester fabric: weight per unit area is 160 g / m 2 ;

[0082] (2)Prepare regenerated collagen modifier;

[0083] Add the waste leather scraps that have been successively subjected to impurity removal, water washing, and drying to an aqueous phosphoric acid solution, stir and react at 80 °C for 10 h, then cool, filter, neutralize the filtrate with alkali to a pH of 8, transfer the filtrate to a dialysis bag for dialysis, and freeze-dry to obtain a regenerated collagen modifier with a molecular weight of 3500 D; among them, the weight ratio of waste leather scraps to aqueous phosphoric acid solution is 10:60;

[0084] (3)Prepare the coating slurry;

[0085] By weight, mix 30 parts of regenerated collagen modifier, 80 parts of anionic aqueous polyurethane dispersion, 3 parts of polyisocyanate curing agent, 6 parts of crosslinking agent, 2 parts of polyurethane associative thickener, 0.4 part of silicone wetting agent, and 5 parts of catalyst evenly to obtain a coating slurry with a viscosity of 500 mPa·s;

[0086] (4)Prepare a polyester fabric with moisture absorption and sweat release functions;

[0087] Immerse the polyester fabric in the coating slurry for 4 s, let it stand at 70 °C for 10 min, and then let it stand at 120 °C for 5 min to obtain a polyester fabric with moisture absorption and sweat release functions; among them, the mass ratio of polyester fabric to coating slurry is 8:100.

[0088] The moisture evaporation rate of the finally prepared polyester fabric with moisture absorption and sweat release functions is 0.4 g·h -1 , and the water droplet diffusion time is 0 s.

[0089] Example 4

[0090] A preparation method of a polyester fabric with moisture absorption and sweat discharge functions, the specific steps are as follows:

[0091] (1) Preparation of raw materials;

[0092] Waste leather scraps: Sheepskin waste leather scraps, the addition amount of chrome tanning agent (chrome powder) during leather making is 5wt% of the sheepskin;

[0093] Phosphoric acid aqueous solution: The pH value is 4;

[0094] Alkali: NaOH;

[0095] Anionic aqueous polyurethane dispersion: The manufacturer is Anda Huatai, and the brand is AH1502F;

[0096] Polyisocyanate curing agent: Isophorone diisocyanate trimer, the manufacturer is Covestro, and the brand is DesmodurZ4470;

[0097] Crosslinking agent: Aziridine;

[0098] Polyurethane associative thickener: The manufacturer is Sichuan Shikai New Materials, and the brand is ZC-230;

[0099] Organosilicon wetting agent: The manufacturer is Momentive Japan, and the brand is 1211;

[0100] Catalyst: Bismuth isooctanoate;

[0101] Polyester fabric: The gram weight is 160g / m 2 ;

[0102] (2) Preparation of regenerated collagen modifier;

[0103] Add the waste leather scraps that have been successively subjected to impurity removal, water washing, and drying treatment into the phosphoric acid aqueous solution, stir and react at 80°C for 10h, successively carry out cooling, filtration, neutralize the filtrate with alkali to a pH value of 8, transfer the filtrate to a dialysis bag for dialysis, and freeze-dry to obtain a regenerated collagen modifier with a molecular weight of 3500D; among them, the weight ratio of waste leather scraps to phosphoric acid aqueous solution is 7:45;

[0104] (3) Prepare the coating slurry;

[0105] By weight, mix 28 parts of regenerated collagen modifier, 75 parts of anionic aqueous polyurethane dispersion, 2 parts of polyisocyanate curing agent, 4 parts of crosslinking agent, 1 part of polyurethane associative thickener, 0.3 part of organosilicon wetting agent, and 4 parts of catalyst evenly to obtain a coating slurry with a viscosity of 400mPa·s;

[0106] (4)Prepare a polyester fabric with moisture absorption and sweat wicking functions;

[0107] After impregnating the polyester fabric in the coating slurry for 3 s, let it stand at 60 °C for 9 min, and then let it stand at 110 °C for 5 min to obtain a polyester fabric with moisture absorption and sweat wicking functions; wherein, the mass ratio of the polyester fabric to the coating slurry is 9:100.

[0108] The moisture evaporation rate of the finally prepared polyester fabric with moisture absorption and sweat wicking functions is 0.41 g·h -1 , and the water droplet diffusion time is 0 s.

[0109] Comparative Example 1

[0110] A method for preparing a polyester fabric is basically the same as that in Example 4, except that: the added amount of the crosslinking agent is 2 parts.

[0111] The moisture evaporation rate of the finally prepared polyester fabric is 0.21 g·h -1 .

[0112] Compared with Example 4, the moisture evaporation rate of the polyester fabric in Comparative Example 1 is significantly reduced. This is because the added amount of the crosslinking agent in Comparative Example 1 is too low, the coating strength is poor, and the coating is easily damaged when wet, making it easier for moisture to accumulate inside the coating, thus reducing the moisture evaporation rate.

[0113] Comparative Example 2

[0114] A method for preparing a polyester fabric is basically the same as that in Example 4, except that: the added amount of the crosslinking agent is 7 parts.

[0115] The moisture evaporation rate of the finally prepared polyester fabric is 0.18 g·h -1 .

[0116] Compared with Example 4, the moisture evaporation rate of the polyester fabric in Comparative Example 2 is significantly reduced. This is because the added amount of the crosslinking agent in Comparative Example 2 is too high, resulting in too many carboxyl groups being blocked, making it difficult for moisture to evaporate from the inside of the fabric to the outside, thus significantly reducing the moisture evaporation rate of the polyester fabric.

[0117] Comparative Example 3

[0118] A method for preparing a polyester fabric is basically the same as that in Example 4, except that: in step (4), after impregnating the polyester fabric in the coating slurry for 4 s, directly let it stand at 120 °C for 10 min.

[0119] The moisture evaporation rate of the finally prepared polyester fabric is 0 g·h -1 , and the water droplet diffusion time is 8 s.

[0120] Compared with Comparative Example 3 and Example 4, the water evaporation rate of the polyester fabric is significantly reduced, and the drip diffusion time is significantly increased. This is because the collagen fibers do not undergo the isocyanate reaction with the polyisocyanate curing agent at low temperature to improve the heat resistance, but directly enter the high-temperature static stage, resulting in a certain degree of damage to the collagen structure at a relatively high temperature later, which in turn causes the moisture absorption and perspiration performance of the polyester fabric to deteriorate significantly, which is manifested as a decrease in the water evaporation rate and an increase in the drip diffusion time.

[0121] Example 5

[0122] A method for preparing a polyester fabric with moisture absorption and perspiration wicking function, the specific steps are as follows:

[0123] (1) Preparation of raw materials;

[0124] Waste leather scraps: Sheepskin waste leather scraps, the amount of chrome tanning agent (chrome powder) added during tanning is 6wt% of the sheepskin;

[0125] Phosphoric acid aqueous solution: pH value is 4;

[0126] Base: NaOH;

[0127] Anionic waterborne polyurethane dispersion: the manufacturer is Anhui Feimiao Chemical, the brand is FS-1516;

[0128] Polyisocyanate curing agent: hexamethylene diisocyanate trimer, manufactured by Covestro, brand name Desmodur N3300;

[0129] Cross-linking agent: carbodiimide;

[0130] Polyurethane associative thickener: The manufacturer is Sichuan Shikai New Materials, the brand is ZC-230;

[0131] Silicone wetting agent: manufacturer is Dow Corning, brand name is OFX-5211;

[0132] Catalyst: Bismuth neodecanoate;

[0133] Polyester fabric: weight 180g / m 2 ;

[0134] (2) preparing a regenerated collagen modifier;

[0135] The waste leather scraps that have been treated with impurities removal, water washing and drying are added to a phosphoric acid aqueous solution, stirred and reacted at 70°C for 9 hours, and then cooled, filtered, the filtrate is neutralized with alkali to a pH value of 8, the filtrate is transferred to a dialysis bag for dialysis, and freeze-dried to obtain a regenerated collagen modifier with a molecular weight of 3000D; wherein the weight ratio of the waste leather scraps to the phosphoric acid aqueous solution is 8:40;

[0136] (3) Prepare the coating slurry;

[0137] By weight, mix 30 parts of regenerated collagen modifier, 80 parts of anionic aqueous polyurethane dispersion, 3 parts of polyisocyanate curing agent, 3 parts of crosslinking agent, 2 parts of polyurethane associative thickener, 0.4 parts of silicone wetting agent and 5 parts of catalyst evenly to obtain a coating slurry with a viscosity of 500 mPa·s;

[0138] (4) Prepare a polyester fabric with moisture absorption and sweat discharge functions;

[0139] Immerse the polyester fabric in the coating slurry for 4 s, let it stand at 70 °C for 10 min, and then let it stand at 120 °C for 4 min to obtain a polyester fabric with moisture absorption and sweat discharge functions; among them, the mass ratio of the polyester fabric to the coating slurry is 10:100.

[0140] The moisture evaporation rate of the finally prepared polyester fabric with moisture absorption and sweat discharge functions is 0.39 g·h -1 , and the water droplet diffusion time is 0 s.

Claims

1. A method for preparing a polyester fabric with moisture absorption and perspiration wicking function, characterized in that: The following steps are involved: S1, adding waste leather scraps into a phosphoric acid solution with a pH value of 3-4, stirring and reacting at 60-80°C for 8-10 hours, and obtaining a regenerated collagen modifier with a molecular weight of 2000-3500D through post-treatment; The waste leather scraps are waste leather scraps of cowhide or sheepskin that have been subjected to impurity removal, water washing and drying treatments in sequence. The amount of chrome tanning agent added during tanning is 2-6wt% of the cowhide or sheepskin, and the weight ratio of the waste leather scraps to the phosphoric acid solution is 5-10:30-60; The post-treatment is cooling, filtering, neutralizing the filtrate with alkali to a pH of 7-8, transferring the filtrate to a dialysis bag for dialysis, and freeze-drying; S2, preparing a coating slurry, immersing the polyester fabric in the coating slurry, and then standing at 50-70° C. for 8-10 minutes, and then standing at 100-120° C. for 3-5 minutes to obtain a polyester fabric with moisture absorption and perspiration wicking function; In terms of weight, the coating slurry contains 20-30 parts of regenerated collagen modifier, 70-80 parts of anionic waterborne polyurethane dispersion, 2-3 parts of polyisocyanate curing agent, 3-6 parts of crosslinking agent, 1-2 parts of thickener, 0.2-0.4 parts of wetting agent, and 3-5 parts of catalyst, and the crosslinking agent is carbodiimide and / or aziridine.

2. The method for preparing a polyester fabric with moisture absorption and perspiration wicking function according to claim 1, characterized in that: In step S2, the anionic aqueous polyurethane dispersion is an aliphatic polyester aqueous polyurethane dispersion containing a carboxyl group or an aliphatic polyether aqueous polyurethane dispersion containing a carboxyl group.

3. The method for preparing a polyester fabric with moisture absorption and perspiration wicking function according to claim 1, characterized in that: In step S2, the polyisocyanate curing agent is isophorone diisocyanate trimer or hexamethylene diisocyanate trimer.

4. The method for preparing a polyester fabric with moisture absorption and perspiration wicking function according to claim 1, characterized in that: In step S2, the viscosity of the coating slurry is 200-500 mPa·s, the time for the polyester fabric to be immersed in the coating slurry is 2-4 seconds, and the mass ratio of the polyester fabric to the coating slurry is 6-10:

100.

5. The method for preparing a polyester fabric with moisture absorption and perspiration wicking function according to claim 4, characterized in that: The thickener is a polyurethane associative thickener; the wetting agent is an organosilicon wetting agent; and the catalyst is dibutyltin dilaurate, bismuth neodecanoate or bismuth isooctanoate.

6. The method for preparing a polyester fabric with moisture absorption and perspiration wicking function according to claim 1, characterized in that: The moisture evaporation rate of polyester fabric with moisture absorption and perspiration function is 0.38-0.41g·h -1 , the drip diffusion time is 0s.