Moisture-absorbing and quick-drying polyester-mixed cotton cloth and processing technology thereof

Abstract

The invention relates to the technical field of polyester-mixed cotton cloth, in particular to moisture-absorption quick-dry polyester-mixed cotton cloth and a processing technology thereof. The preparation method comprises the following steps: uniformly mixing polyester-mixed cotton cloth and a sodium hydroxide solution, washing and drying to obtain hydroxylated polyester-mixed cotton cloth; the preparation method comprises the following steps: putting hydroxylated polyester-mixed cotton cloth into a double-bond-containing finishing solution, carrying out padding treatment, and carrying out pre-baking and baking treatment to obtain modified polyester-mixed cotton cloth; dipping the modified polyester-mixed cotton cloth into the sulfydryl-containing finishing liquid, carrying out click reaction under ultraviolet irradiation, and washing and drying to obtain the moisture-absorbing and quick-drying polyester-mixed cotton cloth. The moisture-absorbing and quick-drying polyester-mixed cotton cloth prepared by the invention not only has excellent moisture-absorbing and quick-drying performance, but also has excellent antibacterial performance.

Description

Technical Field

[0001] The invention relates to the technical field of polyester-cotton cloth, in particular to a moisture-absorbing quick-drying polyester-cotton cloth and a processing technology thereof. Background Art

[0002] As people pay more and more attention to the comfort and functionality of clothing, the demand for moisture-absorbing and quick-drying fabrics is gradually increasing. Polycotton fabric, a composite material combining polyester and cotton fibers, has become one of the most popular functional fabrics on the market because it has both the comfort of cotton fibers and the quick-drying properties of polyester.

[0003] Although the hydrophilicity of polyester-cotton fabric can be improved through modification, many existing technologies still cannot significantly improve its hygroscopicity while maintaining the unique quick-drying properties of polyester, resulting in limited comfort during high-intensity exercise or high-temperature environments. Many hydrophilic treatment methods may affect the durability of polyester-cotton fabric. After multiple washes, the moisture absorption and quick-drying properties of polyester-cotton fabric may decrease significantly, affecting its long-term use effect. After the quick-drying treatment of some polyester-cotton fabrics, the hand feel of the fabric may become hard, affecting the comfort of wearing.

[0004] Therefore, we propose a moisture-absorbing quick-drying polyester-cotton fabric and a processing technology thereof. Summary of the invention

[0005] The object of the present invention is to provide a moisture-absorbing quick-drying polyester-cotton fabric and a processing technology thereof, so as to solve the problems raised in the prior art.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A processing technology for moisture-absorbing quick-drying polyester-cotton cloth comprises the following steps:

[0008] Step S1: uniformly mixing polyester-cotton cloth and sodium hydroxide solution, stirring at 70-80° C. for 30-50 min, washing and drying to obtain hydroxylated polyester-cotton cloth;

[0009] Step S2: placing the hydroxylated polyester-cotton fabric in a double bond finishing solution for padding treatment, pre-baking at 70-80° C. for 10-15 min, and baking at 130-140° C. for 3-5 min to obtain a modified polyester-cotton fabric;

[0010] Step S3: immersing the modified polyester-cotton fabric in a thiol-containing finishing solution and reacting it under ultraviolet light for 30-50 minutes, and obtaining a moisture-absorbing quick-drying polyester-cotton fabric after washing and drying.

[0011] Furthermore, in step S1, the bath ratio of the polyester-cotton cloth to the sodium hydroxide solution is 1:(40-50), and the concentration of the sodium hydroxide solution is 3-5 mol / L.

[0012] Furthermore, in step S2, the preparation method of the double bond-containing finishing liquid is as follows:

[0013] Step (1): under nitrogen protection, itaconic acid, butanediol, polytetrahydrofuran ether diol and hydrolysis-resistant titanium catalyst are mixed uniformly, reacted at 130-140° C. for 2-4 hours, continued to heat to 170-180° C., reacted for 5-7 hours, tetra-n-butyl titanate is added, continued to heat to 220-230° C., vacuumed, reacted for 8-10 hours, and cooled to room temperature to obtain a polyester ether polyol containing a double bond;

[0014] Step (2): under nitrogen protection, isophorone diisocyanate and acetone are mixed evenly, the temperature is raised to 40-50° C., a mixed solution of a double-bond polyester ether polyol and acetone is added dropwise, the mixture is added over a period of 1-2 hours, dibutyltin dilaurate is added, the temperature is further raised to 55-65° C., the reaction is carried out for 1-2 hours, methyl ethyl ketone oxime is added for a blocking reaction for 70-90 minutes, and an isocyanate-terminated polyester ether polyol is obtained;

[0015] Step (3): Evenly mix the isocyanate-terminated polyester ether polyol and deionized water to obtain a finishing liquid containing double bonds.

[0016] Furthermore, in the step (1), the mass ratio of itaconic acid, butanediol and polytetramethylene glycol is 1:(0.4-0.5):(0.6-0.7).

[0017] Furthermore, in the step (1), the amount of the hydrolysis-resistant titanium catalyst is 0.005-0.02% of the total mass of itaconic acid, butanediol and polytetramethylene glycol, and the amount of tetrabutyl titanate is 0.03-0.05% of the total mass of itaconic acid, butanediol and polytetramethylene glycol.

[0018] Furthermore, in the step (2), the mass ratio of isophorone diisocyanate, acetone, double-bond polyester ether polyol, dibutyltin dilaurate and methyl ethyl ketone oxime is 1:(4-6):(1.5-3.0):(0.01-0.03):(1.0-1.5).

[0019] Furthermore, in step (3), the solid content of the double bond-containing finishing liquid is 10-20%.

[0020] Furthermore, the process conditions of the padding treatment are: one dip and one padding, the amount of the double bond finishing liquid is 10-20 g / L, and the padding rate is 75-85%.

[0021] Furthermore, in step S3, the preparation method of the thiol-containing finishing liquid is as follows:

[0022] Step A: Under nitrogen protection, 3-mercaptopropylmethyldimethoxysilane, deionized water and isopropanol are mixed evenly, the temperature is raised to 60-70° C., hydroxy silicone oil and tetramethylammonium hydroxide are added and mixed evenly, the mixture is reacted for 4-6 hours, and the mixture is subjected to reduced pressure distillation to obtain a mercapto-containing organosilicon;

[0023] Step B: Under nitrogen protection, isophorone diisocyanate and acetonitrile are mixed evenly, choline chloride and dibutyltin dilaurate are added, and the mixture is reacted at 40-50° C. for 1-2 hours, and then the mercapto-containing organosilicon is added dropwise for 1-2 hours, and the reaction is continued for 2-4 hours. The organosilicon quaternary ammonium salt is obtained by distillation under reduced pressure;

[0024] Step C: Ultrasonic dispersion of organosilicon quaternary ammonium salt and photoinitiator in the mercapto chitosan aqueous solution to obtain a mercapto-containing finishing solution.

[0025] Furthermore, in step A, the mass ratio of 3-mercaptopropylmethyldimethoxysilane, deionized water, isopropanol, hydroxy silicone oil and tetramethylammonium hydroxide is 1:(2-3):(7-8):(65-66):(0.3-0.5).

[0026] Furthermore, in step B, the mass ratio of isophorone diisocyanate, acetonitrile, choline chloride and dibutyltin dilaurate is 1:(8-10):(0.5-0.6):(0.01-0.03).

[0027] Furthermore, in step B, the mass of the mercapto-containing silicone is 2-4 times the mass of isophorone diisocyanate.

[0028] Furthermore, in step C, the photoinitiator is 2,2-dimethoxy-2-phenylacetophenone, and its dosage is 1-3wt% of the mercapto chitosan aqueous solution; the dosage of the organosilicon quaternary ammonium salt is 1-5% of the mercapto chitosan aqueous solution; and the concentration of the mercapto chitosan aqueous solution is 3-5wt%.

[0029] Furthermore, in step S3, the bath ratio of the modified polyester-cotton fabric to the mercapto-containing finishing solution is 1:(15-20), and the process conditions for ultraviolet irradiation are: using an ultraviolet lamp, an ultraviolet cold light source of 450-500W, and a lamp distance of 10-15cm.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1. A moisture-absorbing quick-drying polyester-cotton fabric and its processing technology of the present invention, using itaconic acid, butanediol, and polytetramethylene glycol as raw materials, introducing polyether polyol in the synthesis process of polyester polyol, using its active terminal hydroxyl group and the terminal carboxyl group of itaconic acid to directly carry out an alkyd condensation reaction, and preparing a double-bond polyester ether polyol containing both ester bond segments and ether bond segments. In the finishing process, the polyester segment and the polyester fiber molecule are combined by co-crystallization, so that the finishing agent is not easy to fall off on the fabric, that is, it has washability; the polyether chain The segments extend to the air phase or the water phase, thereby improving the hydrophilicity and antistatic properties of the fabric; then, isophorone diisocyanate is grafted onto the double-bond polyester ether polyol, and the isocyanate is end-capped with methyl ethyl ketone oxime to synthesize a hydrophilic, heat-deblockable isocyanate-terminated polyester ether polyol. The isocyanate groups at both ends and the side chains can be deblocked at a certain temperature and react with the active groups on the hydroxylated polyester-cotton cloth to form cross-links inside the fiber, making it less likely for the fiber to slip relatively, thereby improving the wrinkle recovery of the finished fabric.

[0032] 2. A moisture-absorbing and quick-drying polyester-cotton fabric and a processing technology thereof of the present invention successfully prepares a terminal hydroxyl-containing mercapto silicone by a hydrolysis-condensation reaction of hydroxy silicone oil (SO) and 3-mercaptopropylmethyldimethoxysilane (MPDMS); then, firstly, an isocyanate group in isophorone diisocyanate reacts with a hydroxyl group in choline chloride, and then the remaining isocyanate groups in isophorone diisocyanate react with the hydroxyl group in the mercapto-containing silicone to obtain a silicone quaternary ammonium salt having an antibacterial effect, while retaining the mercapto function; chitosan is a natural antibacterial agent, and the silicone quaternary ammonium salt and a photoinitiator are ultrasonically dispersed in a mercapto chitosan aqueous solution to obtain a mercapto-containing finishing liquid, which can undergo a mercapto-ene click reaction with a double bond-containing finishing liquid under ultraviolet light irradiation, thereby further improving the moisture-absorbing and quick-drying performance and antibacterial effect of the polyester-cotton fabric. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] In this embodiment, the polyester-cotton cloth: 80% polyester 20% cotton, gram weight 180g / m2, sourced from Shaoxing Keqiao Qianquan Textile Co., Ltd.; hydrolysis-resistant titanium catalyst: AUCAT-ES02, sourced from Guangzhou Yourun Synthetic Materials Co., Ltd.; thiol chitosan: item number Q-0148739, sourced from Xi'an Qiyue Biotechnology Co., Ltd.; polytetramethylene glycol: PTMG650, sourced from Shanghai BASF Chemical Co., Ltd.

[0035] Embodiment 1: A processing technology for moisture-absorbing quick-drying polyester-cotton fabric, comprising the following processes:

[0036] Step S1: uniformly mixing polyester-cotton cloth and 3 mol / L sodium hydroxide solution at a bath ratio of 1:40, stirring at 70° C. for 30 min, washing and drying to obtain hydroxylated polyester-cotton cloth;

[0037] Step S2: placing the hydroxylated polyester-cotton fabric in a double bond finishing solution for padding treatment (one dip and one padding, the amount of the double bond finishing solution is 10 g / L, and the padding rate is 75%), pre-baking at 70° C. for 10 min, and baking at 130° C. for 3 min to obtain a modified polyester-cotton fabric;

[0038] Step S3: immersing the modified polyester-cotton fabric in a mercapto-containing finishing solution at a bath ratio of 1:15, and reacting under ultraviolet light for 30 minutes (using an ultraviolet lamp, an ultraviolet cold light source of 450W, and a lamp distance of 10 cm), and obtaining a moisture-absorbing quick-drying polyester-cotton fabric after washing and drying;

[0039] The preparation method of the double bond finishing liquid is as follows:

[0040] Step (1): Under nitrogen protection, 100 g of itaconic acid, 40 g of butanediol, 60 g of polytetrahydrofuran ether diol and 0.01 g of a hydrolysis-resistant titanium catalyst were mixed evenly, reacted at 130° C. for 2 h, continued to heat to 170° C., reacted for 5 h, added 0.06 g of tetrabutyl titanate, continued to heat to 220° C., evacuated, reacted for 8 h, and cooled to room temperature to obtain a polyester ether polyol containing a double bond;

[0041] Step (2): under nitrogen protection, 100 g of isophorone diisocyanate and 400 g of acetone were mixed evenly, the temperature was raised to 40° C., a mixed solution of 150 g of double-bond polyester ether polyol and 400 g of acetone was added dropwise, the mixture was added over a period of 1 h, 1 g of dibutyltin dilaurate was added, the temperature was further raised to 55° C., the reaction was continued for 1 h, 100 g of methyl ethyl ketone oxime was added for a blocking reaction for 70 min, and an isocyanate-terminated polyester ether polyol was obtained;

[0042] Step (3): 100 g of isocyanate-terminated polyester ether polyol and deionized water are mixed uniformly to obtain a double bond finishing liquid having a solid content of 10%;

[0043] The preparation method of the thiol-containing finishing liquid is as follows:

[0044] Step A: Under nitrogen protection, 10 g of 3-mercaptopropylmethyldimethoxysilane, 20 g of deionized water and 70 g of isopropanol were mixed evenly, the temperature was raised to 60° C., 650 g of hydroxy silicone oil and 3 g of tetramethylammonium hydroxide were added and mixed evenly, the mixture was reacted for 4 h, and the mixture was subjected to reduced pressure distillation to obtain a mercapto-containing organosilicon;

[0045] Step B: Under nitrogen protection, 5 g of isophorone diisocyanate and 40 g of acetonitrile were mixed evenly, 2.5 g of choline chloride and 0.05 g of dibutyltin dilaurate were added, and the mixture was reacted at 40° C. for 1 h, and then 10 g of mercapto-containing organosilicon was added dropwise for 1 h, and the reaction was continued for 2 h. The organosilicon quaternary ammonium salt was obtained by distillation under reduced pressure;

[0046] Step C: Ultrasonic dispersion of 10 g of organosilicon quaternary ammonium salt and 10 g of photoinitiator in 1000 g of 3 wt % thiol-chitosan aqueous solution to obtain a thiol-containing finishing solution.

[0047] Embodiment 2: A processing technology for moisture-absorbing quick-drying polyester-cotton fabric, comprising the following processes:

[0048] Step S1: uniformly mixing polyester-cotton cloth and 4 mol / L sodium hydroxide solution at a ratio of 1:45, stirring at 75° C. for 40 min, washing and drying to obtain hydroxylated polyester-cotton cloth;

[0049] Step S2: placing the hydroxylated polyester-cotton fabric in a double bond finishing solution for padding treatment (one dip and one padding, the amount of the double bond finishing solution is 15 g / L, and the padding rate is 80%), pre-baking at 75° C. for 12 min, and baking at 135° C. for 4 min to obtain a modified polyester-cotton fabric;

[0050] Step S3: immersing the modified polyester-cotton fabric in a mercapto-containing finishing solution at a bath ratio of 1:18, and reacting under ultraviolet light for 40 minutes (using an ultraviolet lamp, an ultraviolet cold light source of 480W, and a lamp distance of 13 cm), and obtaining a moisture-absorbing quick-drying polyester-cotton fabric after washing and drying;

[0051] The preparation method of the double bond finishing liquid is as follows:

[0052] Step (1): under nitrogen protection, 100 g of itaconic acid, 45 g of butanediol, 65 g of polytetrahydrofuran ether diol and 0.02 g of a hydrolysis-resistant titanium catalyst were mixed evenly, reacted at 135° C. for 3 h, continued to heat to 175° C., reacted for 6 h, added 0.08 g of tetrabutyl titanate, continued to heat to 225° C., evacuated, reacted for 9 h, and cooled to room temperature to obtain a polyester ether polyol containing a double bond;

[0053] Step (2): under nitrogen protection, 100 g of isophorone diisocyanate and 500 g of acetone were mixed evenly, the temperature was raised to 45° C., a mixed solution of 200 g of double-bond polyester ether polyol and 500 g of acetone was added dropwise, the mixture was added over a period of 1.5 h, 2 g of dibutyltin dilaurate was added, the temperature was further raised to 60° C., the reaction was continued for 1.5 h, 120 g of methyl ethyl ketone oxime was added, and a blocking reaction was carried out for 80 min to obtain an isocyanate-terminated polyester ether polyol;

[0054] Step (3): 100 g of isocyanate-terminated polyester ether polyol and deionized water are mixed uniformly to obtain a double bond finishing liquid having a solid content of 15%;

[0055] The preparation method of the thiol-containing finishing liquid is as follows:

[0056] Step A: Under nitrogen protection, 10 g of 3-mercaptopropylmethyldimethoxysilane, 25 g of deionized water and 75 g of isopropanol were mixed evenly, the temperature was raised to 65° C., 655 g of hydroxy silicone oil and 4 g of tetramethylammonium hydroxide were added and mixed evenly, the mixture was reacted for 5 h, and the mixture was subjected to reduced pressure distillation to obtain a mercapto-containing organosilicon;

[0057] Step B: Under nitrogen protection, 10 g of isophorone diisocyanate and 90 g of acetonitrile were mixed evenly, 5.5 g of choline chloride and 0.2 g of dibutyltin dilaurate were added, and the mixture was reacted at 45° C. for 1.5 h, and then 30 g of mercapto-containing organosilicon was added dropwise, and the mixture was added dropwise for 1.5 h. The reaction was continued for 3 h, and the organosilicon quaternary ammonium salt was obtained by distillation under reduced pressure;

[0058] Step C: Ultrasonic dispersion of 30 g of organosilicon quaternary ammonium salt and 20 g of photoinitiator in 1000 g of 4 wt % thiol-chitosan aqueous solution to obtain a thiol-containing finishing solution.

[0059] Embodiment 3: A processing technology for moisture-absorbing quick-drying polyester-cotton fabric, comprising the following processes:

[0060] Step S1: uniformly mixing polyester-cotton cloth and 5 mol / L sodium hydroxide solution at a bath ratio of 1:50, stirring at 80° C. for 50 min, washing and drying to obtain hydroxylated polyester-cotton cloth;

[0061] Step S2: placing the hydroxylated polyester-cotton fabric in a double bond finishing solution for padding treatment (one dip and one padding, the amount of the double bond finishing solution is 20 g / L, and the padding rate is 85%), pre-baking at 80° C. for 15 min, and baking at 140° C. for 5 min to obtain a modified polyester-cotton fabric;

[0062] Step S3: immersing the modified polyester-cotton fabric in a mercapto-containing finishing solution at a bath ratio of 1:20, and reacting under ultraviolet light for 50 minutes (using an ultraviolet lamp, an ultraviolet cold light source of 500W, and a lamp distance of 15 cm), and obtaining a moisture-absorbing quick-drying polyester-cotton fabric after washing and drying;

[0063] The preparation method of the double bond finishing liquid is as follows:

[0064] Step (1): Under nitrogen protection, 150 g of itaconic acid, 75 g of butanediol, 105 g of polytetrahydrofuran ether diol and 0.066 g of a hydrolysis-resistant titanium catalyst were mixed evenly, reacted at 140° C. for 4 h, and then heated to 180° C. for 7 h, 0.165 g of tetrabutyl titanate was added, and then heated to 230° C., vacuumed, reacted for 10 h, and cooled to room temperature to obtain a polyester ether polyol containing a double bond;

[0065] Step (2): under nitrogen protection, 100 g of isophorone diisocyanate and 600 g of acetone were mixed evenly, the temperature was raised to 50° C., a mixed solution of 300 g of double-bond polyester ether polyol and 600 g of acetone was added dropwise, the mixture was added over a period of 2 h, 3 g of dibutyltin dilaurate was added, the temperature was further raised to 65° C., the reaction was continued for 2 h, 150 g of methyl ethyl ketone oxime was added for a blocking reaction for 90 min, and an isocyanate-terminated polyester ether polyol was obtained;

[0066] Step (3): 100 g of isocyanate-terminated polyester ether polyol and deionized water are mixed evenly to obtain a double bond finishing liquid having a solid content of 20%;

[0067] The preparation method of the thiol-containing finishing liquid is as follows:

[0068] Step A: Under nitrogen protection, 10 g of 3-mercaptopropylmethyldimethoxysilane, 30 g of deionized water and 80 g of isopropanol were mixed evenly, the temperature was raised to 70° C., 660 g of hydroxy silicone oil and 5 g of tetramethylammonium hydroxide were added and mixed evenly, the mixture was reacted for 6 h, and the mixture was subjected to reduced pressure distillation to obtain a mercapto-containing organosilicon;

[0069] Step B: Under nitrogen protection, 12.5 g of isophorone diisocyanate and 125 g of acetonitrile were mixed evenly, 7.5 g of choline chloride and 0.375 g of dibutyltin dilaurate were added, and the mixture was reacted at 50° C. for 2 h, and then 50 g of mercapto-containing organosilicon was added dropwise, and the mixture was added dropwise for 2 h. The reaction was continued for 4 h, and the organosilicon quaternary ammonium salt was obtained by distillation under reduced pressure;

[0070] Step C: Ultrasonic dispersion of 50 g of organosilicon quaternary ammonium salt and 30 g of photoinitiator in 1000 g of 5 wt % thiol-chitosan aqueous solution to obtain a thiol-containing finishing solution.

[0071] Comparative Example 1: A processing technology for moisture-absorbing quick-drying polyester-cotton fabric, comprising the following processes:

[0072] Step S1: uniformly mixing polyester-cotton cloth and 4 mol / L sodium hydroxide solution at a ratio of 1:45, stirring at 75° C. for 40 min, washing and drying to obtain hydroxylated polyester-cotton cloth;

[0073] Step S2: immersing the hydroxylated polyester-cotton fabric in a mercapto-containing finishing solution at a bath ratio of 1:18, pre-baking at 80° C. for 15 min, and baking at 140° C. for 5 min to obtain a moisture-absorbing quick-drying polyester-cotton fabric;

[0074] Compared with Example 2, Comparative Example 1 did not use a finishing liquid containing double bonds for treatment, and the other steps were the same as those of Example 2.

[0075] Comparative Example 2: A processing technology for moisture-absorbing quick-drying polyester-cotton fabric, comprising the following processes:

[0076] The preparation method of the double bond finishing liquid is as follows:

[0077] Step (1): Under nitrogen protection, 150 g of itaconic acid, 75 g of butanediol, 105 g of polytetrahydrofuran ether diol and 0.066 g of a hydrolysis-resistant titanium catalyst were mixed evenly, reacted at 140° C. for 4 h, and then heated to 180° C. for 7 h, 0.165 g of tetrabutyl titanate was added, and then heated to 230° C., vacuumed, reacted for 10 h, and cooled to room temperature to obtain a polyester ether polyol containing a double bond;

[0078] Step (2): 100 g of double-bond polyester ether polyol and deionized water are mixed uniformly to obtain a double-bond finishing liquid having a solid content of 20%;

[0079] Compared with Example 2, in the double bond-containing finishing liquid of Comparative Example 2, isophorone diisocyanate is not introduced, the isocyanate-terminated polyester ether polyol is replaced by a double bond-containing polyester ether polyol, and the other steps are the same as those of Example 2.

[0080] Comparative Example 3: A processing technology for moisture-absorbing quick-drying polyester-cotton fabric, comprising the following processes:

[0081] The preparation method of the thiol-containing finishing liquid is as follows:

[0082] 30 g of the photoinitiator was ultrasonically dispersed in 1000 g of a 5 wt % thiol-chitosan aqueous solution to obtain a thiol-containing finishing solution.

[0083] Compared with Example 2, the mercapto group-containing finishing liquid of Comparative Example 3 does not include organosilicon quaternary ammonium salt, and the other steps are the same as those of Example 2.

[0084] Experiment: The moisture-absorbing and quick-drying polyester-cotton fabrics obtained in Examples 1-3 and Comparative Examples 1-3 were used to prepare samples, and their properties were tested respectively and the test results were recorded:

[0085] The moisture absorption and quick-drying performance test is based on GB / T 21655.1-2023 "Evaluation of Moisture Absorption and Quick-drying of Textiles Part 1: Single Combined Test Method". The moisture absorption and quick-drying performance indicators of the fabric are tested before washing and after washing and drying 30 times. The washing method is based on GB / T 8629-2017.

[0086] The antibacterial test was carried out according to the AATCC 100-2019 method. The sample size was 15 mm × 15 mm. The samples were placed on glass slides and the activated bacterial solution was diluted to about 1 × 10 8 CFU / mL, add 20.0μL of diluted bacterial solution aliquots to the center of the sample on the slide, place it in the clean bench for 6 hours, transfer the sample to a test tube containing 5.00mL of normal saline and shake it for 10 minutes. Dilute the supernatant to an appropriate concentration, spread it on a solid culture medium, and culture it at 37°C for 24 hours. Observe the number of colonies in the solid culture medium, calculate the antibacterial rate of the fabric and record it. The strain tested in the experiment was Staphylococcus aureus.

[0087] Test results:

[0088]

[0089] According to the data in the above table, we can clearly draw the following conclusions:

[0090] 1. Compared with Examples 1-3, the moisture absorption and quick-drying performance of the product obtained in Comparative Example 1 is reduced, indicating that the present invention can effectively improve the moisture absorption and quick-drying ability of polyester-cotton cloth by treating with a finishing liquid containing double bonds.

[0091] 2. Compared with Examples 1-3, the moisture absorption and quick-drying performance of the product obtained in Comparative Example 2 is reduced, which indicates that the present invention can further improve the water-washing resistance of polyester-cotton fabric by introducing isophorone diisocyanate into the double bond-containing finishing liquid and performing end-capping treatment.

[0092] 3. Compared with Examples 1-3, the moisture absorption and quick-drying properties and antibacterial rate of the product obtained in Comparative Example 3 are both reduced. It can be seen that the addition of organosilicon quaternary ammonium salt in the present invention can improve the moisture absorption and quick-drying properties and antibacterial effect of the material.

[0093] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A processing technology for moisture-absorbing quick-drying polyester-cotton fabric, characterized in that: The steps include: Step S1: uniformly mixing polyester-cotton cloth and sodium hydroxide solution, stirring at 70-80° C. for 30-50 min, washing and drying to obtain hydroxylated polyester-cotton cloth; Step S2: placing the hydroxylated polyester-cotton fabric in a double bond finishing solution for padding treatment, pre-baking at 70-80° C. for 10-15 min, and baking at 130-140° C. for 3-5 min to obtain a modified polyester-cotton fabric; Step S3: immersing the modified polyester-cotton fabric in a thiol-containing finishing solution and reacting it under ultraviolet light for 30-50 minutes, and obtaining a moisture-absorbing quick-drying polyester-cotton fabric after washing and drying.

2. The processing technology of a moisture-absorbing quick-drying polyester-cotton fabric according to claim 1 is characterized in that: In the step S1, the bath ratio of the polyester-cotton cloth to the sodium hydroxide solution is 1:(40-50), and the concentration of the sodium hydroxide solution is 3-5 mol / L.

3. The processing technology of the moisture-absorbing quick-drying polyester-cotton fabric according to claim 1 is characterized in that: In step S2, the preparation method of the double bond-containing finishing liquid is as follows: Step (1): under nitrogen protection, itaconic acid, butanediol, polytetrahydrofuran ether diol and hydrolysis-resistant titanium catalyst are mixed uniformly, reacted at 130-140° C. for 2-4 hours, continued to heat to 170-180° C., reacted for 5-7 hours, tetra-n-butyl titanate is added, continued to heat to 220-230° C., vacuumed, reacted for 8-10 hours, and cooled to room temperature to obtain a polyester ether polyol containing a double bond; Step (2): under nitrogen protection, isophorone diisocyanate and acetone are mixed evenly, the temperature is raised to 40-50° C., a mixed solution of a double-bond polyester ether polyol and acetone is added dropwise, the mixture is added over a period of 1-2 hours, dibutyltin dilaurate is added, the temperature is further raised to 55-65° C., the reaction is carried out for 1-2 hours, methyl ethyl ketone oxime is added for a blocking reaction for 70-90 minutes, and an isocyanate-terminated polyester ether polyol is obtained; Step (3): Evenly mix the isocyanate-terminated polyester ether polyol and deionized water to obtain a finishing liquid containing double bonds.

4. The processing technology of the moisture-absorbing quick-drying polyester-cotton fabric according to claim 3 is characterized in that: In the step (1), the mass ratio of itaconic acid, butanediol and polytetramethylene glycol is 1:(0.4-0.5):(0.6-0.7).

5. The processing technology of the moisture-absorbing quick-drying polyester-cotton fabric according to claim 3 is characterized in that: In the step (2), the mass ratio of isophorone diisocyanate, acetone, double-bond polyester ether polyol, dibutyltin dilaurate and methyl ethyl ketone oxime is 1: (6-8): (1.5-3.0): (0.01-0.03): (1.0-1.5).

6. The processing technology of the moisture-absorbing quick-drying polyester-cotton fabric according to claim 1 is characterized in that: In step S3, the preparation method of the thiol-containing finishing liquid is as follows: Step A: Under nitrogen protection, 3-mercaptopropylmethyldimethoxysilane, deionized water and isopropanol are mixed evenly, the temperature is raised to 60-70° C., hydroxy silicone oil and tetramethylammonium hydroxide are added and mixed evenly, the mixture is reacted for 4-6 hours, and the mixture is subjected to reduced pressure distillation to obtain a mercapto-containing organosilicon; Step B: Under nitrogen protection, isophorone diisocyanate and acetonitrile are mixed evenly, choline chloride and dibutyltin dilaurate are added, and the mixture is reacted at 40-50° C. for 1-2 hours, and then the mercapto-containing organosilicon is added dropwise for 1-2 hours, and the reaction is continued for 2-4 hours. The organosilicon quaternary ammonium salt is obtained by distillation under reduced pressure; Step C: Ultrasonic dispersion of organosilicon quaternary ammonium salt and photoinitiator in the mercapto chitosan aqueous solution to obtain a mercapto-containing finishing solution.

7. The processing technology of the moisture-absorbing quick-drying polyester-cotton fabric according to claim 6 is characterized in that: In the step A, the mass ratio of 3-mercaptopropylmethyldimethoxysilane, deionized water, isopropanol, hydroxy silicone oil and tetramethylammonium hydroxide is 1:(2-3):(7-8):(65-66):(0.3-0.5).

8. The processing technology of the moisture-absorbing quick-drying polyester-cotton fabric according to claim 6 is characterized in that: In the step B, the mass of the mercapto-containing silicone is 2-4 times the mass of isophorone diisocyanate.

9. The processing technology of the moisture-absorbing quick-drying polyester-cotton fabric according to claim 1 is characterized in that: In the step S3, the bath ratio of the modified polyester-cotton fabric to the mercapto-containing finishing liquid is 1:(15-20).

10. A moisture-absorbing and quick-drying polyester-cotton fabric obtained according to the processing technology described in any one of claims 1 to 9.

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