Moisture-absorbing and quick-drying functional finishing agent, preparation method and application thereof

Abstract

The application relates to the technical field of polyester finishing agents, and discloses a moisture-absorbing and quick-drying type functional finishing agent as well as a preparation method and application thereof. The preparation steps are as follows: S1: dimethylallylamine and epichlorohydrin are taken, stirred in tetrahydrofuran, reacted, and the solvent and unreacted substances are removed to obtain a quaternary ammonium salt; S2: the quaternary ammonium salt is stirred in water, N,N'-di(aminoethyl)-piperazine is added, stirred, reacted, the solvent and unreacted substances are removed, and a modified quaternary ammonium salt is obtained; S3: terephthalic acid, polyethylene glycol and the modified quaternary ammonium salt are stirred and heated to 155-170 DEG C, tetrabutyl titanate is added, the mixture is cooled and discharged after reaction, and then washed to obtain a polyether polyester copolymer; S4: the polyether polyester copolymer and modified silk glue protein are stirred in water to obtain a first component; hydrogen-containing silicone oil emulsion and platinum catalyst are uniformly mixed to obtain a second component; and the first component and the second component are mixed to obtain the moisture-absorbing and quick-drying type functional finishing agent.

Description

Technical Field

[0001] This invention relates to the field of polyester finishing agents, and discloses a moisture-wicking and quick-drying functional finishing agent, its preparation method, and its application. Background Technology

[0002] Finishing agents are widely used in the field of fabrics, and can endow fabrics with various excellent properties. Polyester is a type of synthetic fiber with advantages such as high modulus, good elasticity, and wrinkle resistance. However, its hydrophilicity and moisture permeability are poor, and it cannot quickly absorb and evaporate sweat, resulting in poor wearing comfort, which limits its application in summer clothing, sportswear, and other fields.

[0003] Moisture-wicking and quick-drying polyether polyester finishing agents are an important class of fabric finishing auxiliaries. Their polyester segments have good hydrophilicity, which can improve the moisture-wicking and quick-drying properties of polyester. However, existing polyether polyester finishing agents still have room for improvement in terms of the extent to which they enhance moisture-wicking and quick-drying properties, improve hand feel, and increase wash resistance. Therefore, it is of great significance to study a moisture-wicking and quick-drying functional finishing agent with good wash resistance and a good hand feel after finishing, its preparation method, and its application in polyester fabrics. Summary of the Invention

[0004] The purpose of this invention is to provide a moisture-wicking and quick-drying functional finishing agent, its preparation method, and its application, so as to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a method for preparing a moisture-absorbing and quick-drying functional finishing agent, comprising the following steps:

[0006] S1: Take dimethylallylamine and epichlorohydrin, add them to tetrahydrofuran and stir until homogeneous. Stir the reaction and remove the solvent and unreacted substances to obtain the quaternary ammonium salt.

[0007] S2: Add the quaternary ammonium salt to water and stir until homogeneous. Add N,N'-di(aminoethyl)-piperazine and stir until homogeneous. Stir the reaction and remove the solvent and unreacted substances to obtain the modified quaternary ammonium salt containing two hydroxyl groups and a vinyl group.

[0008] S3: Take terephthalic acid, polyethylene glycol, and modified quaternary ammonium salt, heat to 155~170℃ and stir evenly, add tetrabutyl titanate, cool and discharge the material after reaction, wash, and obtain polyether polyester copolymer.

[0009] S4: Add polyether polyester copolymer and modified sericin to water and stir evenly to obtain the first component; mix hydrogen-containing silicone oil emulsion and platinum catalyst evenly to obtain the second component; mix the first component and the second component to obtain a moisture-wicking and quick-drying functional finishing agent.

[0010] More preferably, the quaternary ammonium salt comprises the following raw materials, in parts by mass: 20-25 parts dimethylallylamine, 20-25 parts epichlorohydrin, and 80-100 parts tetrahydrofuran;

[0011] The modified quaternary ammonium salt comprises the following raw materials, in parts by mass: 5-10 parts quaternary ammonium salt, 80-100 parts water, and 8-15 parts N,N'-di(aminoethyl)-piperazine.

[0012] In a more optimized manner, the polyether polyester copolymer comprises the following raw materials, by mass parts: 8-15 parts terephthalic acid, 50-60 parts polyethylene glycol-2000, 3-5 parts modified quaternary ammonium salt, and 0.01-0.02 parts tetrabutyl titanate.

[0013] In a more optimized manner, the concentration of polyether polyester copolymer in the first component is 10~15 g / L, the concentration of modified sericin is 2~5 g / L, and the remainder is water;

[0014] In the second component, the mass ratio of hydrogen-containing silicone oil emulsion to platinum catalyst is (100~150):0.001.

[0015] In a more optimized manner, the mass ratio of the first component to the second component in the moisture-wicking and quick-drying functional finishing agent is (8~9):(1~2).

[0016] In a more optimized manner, the preparation of the modified sericin includes the following steps: taking raw silk, placing it in a Na2CO3 aqueous solution, treating it at 95~100℃ for 6~8h, dialyzing in water, centrifuging to remove impurities, adding methacrylic anhydride, treating it at 0~5℃ and pH 7~8 for 6~8h, dialyzing in water, and concentrating it in polyethylene glycol-20000 for 48~72h to obtain modified sericin.

[0017] The modified sericin protein is optimized to include the following raw materials, by mass parts: 3-6 parts raw silk, 100-120 parts 1g / L Na2CO3 aqueous solution, and 0.2-0.4 parts methacrylic anhydride.

[0018] The above-mentioned moisture-absorbing and quick-drying functional finishing agent is used for the surface treatment of polyester fabrics, including the following steps: the polyester fabric is dipped and rubbed twice, and dried at 80~90℃ for 2~5 hours.

[0019] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The prepared finishing agent contains two components. The first component contains polyether polyester copolymer and modified sericin, and the second component contains hydrogen-containing silicone oil emulsion and platinum catalyst. After mixing the first component and the second component, it is immediately used to finish polyester fabric. After drying at 80~90℃ for 2~5 hours, the silanol groups contained in the second component crosslink with the double bonds contained in the polyether polyester copolymer and modified sericin in the first component. The crosslinking reaction occurs on the surface / inside of the fabric, which can enhance the bonding force and improve the wash resistance. The addition ratio of the above two components needs to be controlled. If too little second component is added, there will be less crosslinking, less improvement in wash resistance, and little improvement in fabric hand feel. If too much second component is added, the hydrophilicity will be reduced, affecting the moisture absorption and quick-drying performance.

[0020] The polyether polyester copolymer is prepared from terephthalic acid, polyethylene glycol, and modified quaternary ammonium salt. The polyether segment provides hydrophilicity, and the polyester segment provides wash resistance. The modified quaternary ammonium salt is prepared by using dimethylallylamine and epichlorohydrin to obtain the quaternary ammonium salt, and then reacting its epoxy group with N,N'-di(aminoethyl)-piperazine to obtain a modified quaternary ammonium salt containing two hydroxyl groups and a vinyl group. The double bond can participate in the crosslinking reaction in subsequent steps, improving the binding force between the finishing agent and the fabric. The quaternary ammonium salt structure and the piperazine nitrogen atom have good hydrophilicity, further improving moisture absorption and wicking properties, and also improving the fabric's hand feel. Sericin has a strong affinity for water molecules, which can improve moisture absorption and skin affinity, thus improving wearing comfort. After modification with double bonds, it can participate in subsequent crosslinking, acting as a bridge to improve the binding force, thereby improving wash resistance.

[0021] In summary, this method prepares a moisture-wicking and quick-drying functional finishing agent with good wash resistance and hand feel after finishing by using a polyether polyester copolymer containing double bonds, double bond-modified sericin, and hydrogen-containing silicone oil emulsion. When applied to polyester fabrics, it can significantly improve their moisture-wicking and quick-drying properties. Detailed Implementation

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] It should be noted that there are no special restrictions on the manufacturers from which the raw materials involved in this invention can be purchased. Exemplary examples include: ethanol (CAS: 64-17-5); methacrylic anhydride (CAS: 760-93-0); polyethylene glycol-20000 (molecular weight 20000, Zeye Biotechnology Co., Ltd.); dimethylallylamine (CAS: 2155-94-4); epichlorohydrin (CAS: 106-89-8); N,N'-di(aminoethyl)-piperazine (CA) S: 6531-38-0); Terephthalic acid (CAS: 100-21-0); Polyethylene glycol-2000 (molecular weight 2000, Zeye Biotechnology Co., Ltd.); Tetrabutyl titanate (CAS: 5593-70-4); Hydrogen-containing silicone oil emulsion (IOTA2021, Anhui Aiyota Silicone Oil Co., Ltd.); Platinum catalyst (KARSTEDT catalyst T25260); Dimethyl silicone oil emulsion (YL-2011, 30%, Laiyang Yulin Chemical Co., Ltd.);

[0024] Unless otherwise specified, all figures below are parts by weight or mass ratios.

[0025] Example 1: S1: Take 5 parts of raw silk, add 100 parts of Na2CO3 aqueous solution with a mass concentration of 1g / L, treat at 100℃ for 6h, pour into a dialysis bag and dialyze in water for 48h, centrifuge at 6500rpm for 10min to remove impurities, add 0.3 parts of methacrylic anhydride, treat at 4℃ and pH 8 for 6h, dialyze in water for 48h, concentrate in polyethylene glycol (molecular weight 20000) for 48h to obtain modified sericin;

[0026] S2: Take 20 parts of dimethylallylamine and 20 parts of epichlorohydrin, add them to 100 parts of tetrahydrofuran, stir evenly, stir at 60°C for 6 hours, remove the solvent and unreacted substances, and obtain the quaternary ammonium salt.

[0027] Add 6 parts of quaternary ammonium salt to 100 parts of water and stir until homogeneous. Add 12 parts of N,N'-di(aminoethyl)-piperazine and stir until homogeneous. Stir at 90°C for 8 hours to remove solvent and unreacted substances, and obtain modified quaternary ammonium salt containing two hydroxyl groups and a vinyl group.

[0028] S3: Take 10 parts of terephthalic acid, 55 parts of polyethylene glycol 2000, and 4 parts of modified quaternary ammonium salt, heat to 160℃ and stir evenly, add 0.01 parts of tetrabutyl titanate, introduce nitrogen gas and heat to 185℃ to react for 1 hour, then heat to 240℃ to react for 1 hour, then heat to 280℃ to react for 1 hour, cool and discharge the material, wash with water and ethanol in sequence to obtain polyether polyester copolymer;

[0029] S3: Add polyether polyester copolymer and modified sericin to water and stir evenly to obtain the first component; the concentration of polyether polyester copolymer is 14 g / L and the concentration of modified sericin is 3 g / L; mix 100 parts of hydrogen-containing silicone oil emulsion and 0.001 platinum catalyst evenly to obtain the second component; mix the first component and the second component at a mass ratio of 8:1 to obtain a moisture-wicking and quick-drying functional finishing agent;

[0030] S4: Apply a moisture-wicking and quick-drying functional finishing agent to the polyester fabric for two dips and two nips, with a nip rate of 70% and a liquor ratio of 1:40. Dry at 85℃ for 4 hours to complete the finishing process.

[0031] Example 2: S1: Take 3 parts of raw silk, add 100 parts of Na2CO3 aqueous solution with a mass concentration of 1g / L, treat at 100℃ for 6h, pour into a dialysis bag and dialyze in water for 48h, centrifuge at 6500rpm for 10min to remove impurities, add 0.2 parts of methacrylic anhydride, treat at 4℃ and pH 8 for 6h, dialyze in water for 48h, concentrate in polyethylene glycol (molecular weight 20000) for 48h to obtain modified sericin;

[0032] S2: Take 20 parts of dimethylallylamine and 25 parts of epichlorohydrin, add them to 100 parts of tetrahydrofuran, stir evenly, stir at 60°C for 6 hours, remove the solvent and unreacted substances, and obtain the quaternary ammonium salt.

[0033] Add 5 parts of quaternary ammonium salt to 100 parts of water and stir until homogeneous. Add 8 parts of N,N'-di(aminoethyl)-piperazine and stir until homogeneous. Stir at 90°C for 8 hours to remove solvent and unreacted substances, and obtain a modified quaternary ammonium salt containing two hydroxyl groups and a vinyl group.

[0034] S3: Take 8 parts of terephthalic acid, 50 parts of polyethylene glycol 2000, and 3 parts of modified quaternary ammonium salt, heat to 160℃ and stir evenly, add 0.01 parts of tetrabutyl titanate, introduce nitrogen gas and heat to 185℃ to react for 1 hour, then heat to 240℃ to react for 1 hour, then heat to 280℃ to react for 1 hour, cool and discharge the material, wash with water and ethanol in sequence to obtain polyether polyester copolymer;

[0035] S3: Add polyether polyester copolymer and modified sericin to water and stir evenly to obtain the first component; the concentration of polyether polyester copolymer is 12 g / L and the concentration of modified sericin is 4 g / L; mix 100 parts of hydrogen-containing silicone oil emulsion and 0.001 platinum catalyst evenly to obtain the second component; mix the first component and the second component at a mass ratio of 8:1 to obtain a moisture-wicking and quick-drying functional finishing agent;

[0036] S4: Apply a moisture-wicking and quick-drying functional finishing agent to the polyester fabric for two dips and two nips, with a nip rate of 70% and a liquor ratio of 1:40. Dry at 85℃ for 4 hours to complete the finishing process.

[0037] Example 3: S1: Take 6 parts of raw silk, add 100 parts of Na2CO3 aqueous solution with a mass concentration of 1g / L, treat at 100℃ for 6h, pour into a dialysis bag and dialyze in water for 48h, centrifuge at 6500rpm for 10min to remove impurities, add 0.4 parts of methacrylic anhydride, treat at 4℃ and pH 8 for 6h, dialyze in water for 48h, concentrate in polyethylene glycol (molecular weight 20000) for 48h to obtain modified sericin;

[0038] S2: Take 20 parts of dimethylallylamine and 25 parts of epichlorohydrin, add them to 100 parts of tetrahydrofuran, stir evenly, stir at 60°C for 6 hours, remove the solvent and unreacted substances, and obtain the quaternary ammonium salt.

[0039] Add 10 parts of quaternary ammonium salt to 100 parts of water and stir until homogeneous. Add 15 parts of N,N'-di(aminoethyl)-piperazine and stir until homogeneous. Stir at 90°C for 8 hours to remove solvent and unreacted substances, and obtain a modified quaternary ammonium salt containing two hydroxyl groups and a vinyl group.

[0040] S3: Take 15 parts of terephthalic acid, 60 parts of polyethylene glycol 2000, and 5 parts of modified quaternary ammonium salt, heat to 160℃ and stir evenly, add 0.01 parts of tetrabutyl titanate, introduce nitrogen gas and heat to 185℃ to react for 1 hour, then heat to 240℃ to react for 1 hour, then heat to 280℃ to react for 1 hour, cool and discharge the material, wash with water and ethanol in sequence to obtain polyether polyester copolymer;

[0041] S3: Add polyether polyester copolymer and modified sericin to water and stir evenly to obtain the first component; the concentration of polyether polyester copolymer is 10 g / L and the concentration of modified sericin is 5 g / L; mix 100 parts of hydrogen-containing silicone oil emulsion and 0.001 platinum catalyst evenly to obtain the second component; mix the first component and the second component at a mass ratio of 8:1 to obtain a moisture-absorbing and quick-drying functional finishing agent;

[0042] S4: Apply a moisture-wicking and quick-drying functional finishing agent to the polyester fabric for two dips and two nips, with a nip rate of 70% and a liquor ratio of 1:40. Dry at 85℃ for 4 hours to complete the finishing process.

[0043] Comparative Example 1 (the raw materials of the second component are changed, and the remaining methods and steps are the same as in Example 1): S1: Take 5 parts of raw silk, add 100 parts of Na2CO3 aqueous solution with a mass concentration of 1 g / L, treat at 100℃ for 6 h, pour into a dialysis bag and dialyze in water for 48 h, centrifuge at 6500 rpm for 10 min to remove impurities, add 0.3 parts of methacrylic anhydride, treat at 4℃ and pH 8 for 6 h, dialyze in water for 48 h, concentrate in polyethylene glycol (molecular weight 20000) for 48 h to obtain modified sericin;

[0044] S2: Take 20 parts of dimethylallylamine and 20 parts of epichlorohydrin, add them to 100 parts of tetrahydrofuran, stir evenly, stir at 60°C for 6 hours, remove the solvent and unreacted substances, and obtain the quaternary ammonium salt.

[0045] Add 6 parts of quaternary ammonium salt to 100 parts of water and stir until homogeneous. Add 12 parts of N,N'-di(aminoethyl)-piperazine and stir until homogeneous. Stir at 90°C for 8 hours to remove solvent and unreacted substances, and obtain modified quaternary ammonium salt containing two hydroxyl groups and a vinyl group.

[0046] S3: Take 10 parts of terephthalic acid, 55 parts of polyethylene glycol 2000, and 4 parts of modified quaternary ammonium salt, heat to 160℃ and stir evenly, add 0.01 parts of tetrabutyl titanate, introduce nitrogen gas and heat to 185℃ to react for 1 hour, then heat to 240℃ to react for 1 hour, then heat to 280℃ to react for 1 hour, cool and discharge the material, wash with water and ethanol in sequence to obtain polyether polyester copolymer;

[0047] S3: Add polyether polyester copolymer and modified sericin to water and stir evenly to obtain the first component; the concentration of polyether polyester copolymer is 14 g / L and the concentration of modified sericin is 3 g / L; use dimethyl silicone oil emulsion as the second component; mix the first component and the second component at a mass ratio of 8:1 to obtain a moisture-wicking and quick-drying functional finishing agent.

[0048] S4: Apply a moisture-wicking and quick-drying functional finishing agent to the polyester fabric for two dips and two nips, with a nip rate of 70% and a liquor ratio of 1:40. Dry at 85℃ for 4 hours to complete the finishing process.

[0049] Comparative Example 2 (using sericin instead of modified sericin, with the remaining steps being the same as in Example 1): S1: Take 5 parts of raw silk, add 100 parts of Na2CO3 aqueous solution with a mass concentration of 1 g / L, treat at 100℃ for 6 h, pour into a dialysis bag and dialyze in water for 48 h, centrifuge at 6500 rpm for 10 min to remove impurities, concentrate in polyethylene glycol (molecular weight 20000) for 48 h to obtain sericin;

[0050] S2: Take 20 parts of dimethylallylamine and 20 parts of epichlorohydrin, add them to 100 parts of tetrahydrofuran, stir evenly, stir at 60°C for 6 hours, remove the solvent and unreacted substances, and obtain the quaternary ammonium salt.

[0051] Add 6 parts of quaternary ammonium salt to 100 parts of water and stir until homogeneous. Add 12 parts of N,N'-di(aminoethyl)-piperazine and stir until homogeneous. Stir at 90°C for 8 hours to remove solvent and unreacted substances, and obtain modified quaternary ammonium salt containing two hydroxyl groups and a vinyl group.

[0052] S3: Take 10 parts of terephthalic acid, 55 parts of polyethylene glycol 2000, and 4 parts of modified quaternary ammonium salt, heat to 160℃ and stir evenly, add 0.01 parts of tetrabutyl titanate, introduce nitrogen gas and heat to 185℃ to react for 1 hour, then heat to 240℃ to react for 1 hour, then heat to 280℃ to react for 1 hour, cool and discharge the material, wash with water and ethanol in sequence to obtain polyether polyester copolymer;

[0053] S3: Add polyether polyester copolymer and sericin to water and stir evenly to obtain the first component; the concentration of polyether polyester copolymer is 14 g / L and the concentration of sericin is 3 g / L; mix 100 parts of hydrogen-containing silicone oil emulsion and 0.001 platinum catalyst evenly to obtain the second component; mix the first component and the second component at a mass ratio of 8:1 to obtain a moisture-wicking and quick-drying functional finishing agent;

[0054] S4: Apply a moisture-wicking and quick-drying functional finishing agent to the polyester fabric for two dips and two nips, with a nip rate of 70% and a liquor ratio of 1:40. Dry at 85℃ for 4 hours to complete the finishing process.

[0055] Comparative Example 3 (the addition ratio of the first and second components was changed, and the remaining methods and steps were the same as in Example 1): S1: Take 5 parts of raw silk, add 100 parts of Na2CO3 aqueous solution with a mass concentration of 1 g / L, treat at 100℃ for 6 h, pour into a dialysis bag and dialyze in water for 48 h, centrifuge at 6500 rpm for 10 min to remove impurities, add 0.3 parts of methacrylic anhydride, treat at 4℃ and pH 8 for 6 h, dialyze in water for 48 h, concentrate in polyethylene glycol (molecular weight 20000) for 48 h to obtain modified sericin;

[0056] S2: Take 20 parts of dimethylallylamine and 20 parts of epichlorohydrin, add them to 100 parts of tetrahydrofuran, stir evenly, stir at 60°C for 6 hours, remove the solvent and unreacted substances, and obtain the quaternary ammonium salt.

[0057] Add 6 parts of quaternary ammonium salt to 100 parts of water and stir until homogeneous. Add 12 parts of N,N'-di(aminoethyl)-piperazine and stir until homogeneous. Stir at 90°C for 8 hours to remove solvent and unreacted substances, and obtain modified quaternary ammonium salt containing two hydroxyl groups and a vinyl group.

[0058] S3: Take 10 parts of terephthalic acid, 55 parts of polyethylene glycol 2000, and 4 parts of modified quaternary ammonium salt, heat to 160℃ and stir evenly, add 0.01 parts of tetrabutyl titanate, introduce nitrogen gas and heat to 185℃ to react for 1 hour, then heat to 240℃ to react for 1 hour, then heat to 280℃ to react for 1 hour, cool and discharge the material, wash with water and ethanol in sequence to obtain polyether polyester copolymer;

[0059] S3: Add polyether polyester copolymer and modified sericin to water and stir evenly to obtain the first component; the concentration of polyether polyester copolymer is 14 g / L and the concentration of modified sericin is 3 g / L; mix 100 parts of hydrogen-containing silicone oil emulsion and 0.001 platinum catalyst evenly to obtain the second component; mix the first component and the second component at a mass ratio of 11:1 to obtain a moisture-wicking and quick-drying functional finishing agent;

[0060] S4: Apply a moisture-wicking and quick-drying functional finishing agent to the polyester fabric for two dips and two nips, with a nip rate of 70% and a liquor ratio of 1:40. Dry at 85℃ for 4 hours to complete the finishing process.

[0061] Comparative Example 4 (the addition ratio of the first and second components was changed, and the remaining methods and steps were the same as in Example 1): S1: Take 5 parts of raw silk, add 100 parts of Na2CO3 solution with a mass concentration of 1 g / L, treat at 100℃ for 6 h, pour into a dialysis bag and dialyze in water for 48 h, centrifuge at 6500 rpm for 10 min to remove impurities, add 0.3 parts of methacrylic anhydride, treat at 4℃ and pH 8 for 6 h, dialyze in water for 48 h, concentrate in polyethylene glycol (molecular weight 20000) for 48 h to obtain modified sericin;

[0062] S2: Take 20 parts of dimethylallylamine and 20 parts of epichlorohydrin, add them to 100 parts of tetrahydrofuran, stir evenly, stir at 60°C for 6 hours, remove the solvent and unreacted substances, and obtain the quaternary ammonium salt.

[0063] Add 6 parts of quaternary ammonium salt to 100 parts of water and stir until homogeneous. Add 12 parts of N,N'-di(aminoethyl)-piperazine and stir until homogeneous. Stir at 90°C for 8 hours to remove solvent and unreacted substances, and obtain modified quaternary ammonium salt containing two hydroxyl groups and a vinyl group.

[0064] S3: Take 10 parts of terephthalic acid, 55 parts of polyethylene glycol 2000, and 4 parts of modified quaternary ammonium salt, heat to 160℃ and stir evenly, add 0.01 parts of tetrabutyl titanate, introduce nitrogen gas and heat to 185℃ to react for 1 hour, then heat to 240℃ to react for 1 hour, then heat to 280℃ to react for 1 hour, cool and discharge the material, wash with water and ethanol in sequence to obtain polyether polyester copolymer;

[0065] S3: Add polyether polyester copolymer and modified sericin to water and stir evenly to obtain the first component; the concentration of polyether polyester copolymer is 14 g / L and the concentration of modified sericin is 3 g / L; mix 100 parts of hydrogen-containing silicone oil emulsion and 0.001 platinum catalyst evenly to obtain the second component; mix the first component and the second component at a mass ratio of 6:1 to obtain a moisture-wicking and quick-drying functional finishing agent;

[0066] S4: Apply a moisture-wicking and quick-drying functional finishing agent to the polyester fabric for two dips and two nips, with a nip rate of 70% and a liquor ratio of 1:40. Dry at 85℃ for 4 hours to complete the finishing process.

[0067] Performance test: Take the moisture-absorbing and quick-drying functional finishing agents prepared in Examples 1-3 and Comparative Examples 1-4, and perform two dips and two nips on polyester fabric. The nips-off rate is 70%, the bath ratio is 1:40, and the sample is dried at 85℃ for 4 hours. (1) According to GB / T21655.1-2008, add 0.2mL of water to the sample surface, observe and record the time for complete diffusion of the water droplets, and evaluate the moisture absorption. (2) Use the moisture residue rate to characterize the quick-drying property: add 0.2ml of water to the sample surface, weigh it, weigh it again after 60min, and calculate the moisture residue rate. (3) According to GB / T8629-2001, wash the sample 30 times and test the moisture residue rate again. See Table 1 for details.

[0068] Table 1:

[0069] Water droplet diffusion time / s Moisture Residue Rate / % Residual moisture content after washing / % Example 1 0.35 14.3 +3.6 Example 2 0.38 15.3 +3.8 Example 3 0.37 15.0 +4.3 Comparative Example 1 0.55 21.0 +10.8 Comparative Example 2 0.49 20.3 +7.6 Comparative Example 3 0.43 19.1 +7.1 Comparative Example 4 0.65 24.6 +6.9

[0070] Conclusions: In Comparative Example 1, changing the raw material of the second component to dimethyl silicone oil emulsion resulted in a decrease in crosslinking degree, leading to a significant decrease in wash resistance. In Comparative Example 2, replacing modified sericin with sericin resulted in poor adhesion between sericin and the fabric, leading to a decrease in wash resistance. In Comparative Examples 3 and 4, changing the addition ratio of the first and second components resulted in a decrease in performance due to factors such as hydrophilicity, crosslinking degree, and adhesion. In summary, the moisture-wicking and quick-drying functional finishing agent prepared in this scheme, when used to finish fabrics, can give them good moisture-wicking and quick-drying properties, as well as good wash resistance and a pleasant hand feel.

[0071] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A method for preparing a moisture-wicking and quick-drying functional finishing agent, characterized in that: Includes the following steps: S1: Take dimethylallylamine and epichlorohydrin, add them to tetrahydrofuran and stir until homogeneous. Stir the reaction and remove the solvent and unreacted substances to obtain the quaternary ammonium salt. S2: Add the quaternary ammonium salt to water and stir until homogeneous. Add N,N'-di(aminoethyl)-piperazine and stir until homogeneous. Stir the reaction mixture and remove the solvent and unreacted substances to obtain the modified quaternary ammonium salt. S3: Take terephthalic acid, polyethylene glycol, and modified quaternary ammonium salt, heat to 155~170℃ and stir evenly, add tetrabutyl titanate, cool and discharge the material after reaction, wash, and obtain polyether polyester copolymer. S4: Add polyether polyester copolymer and modified sericin to water and stir evenly to obtain the first component; mix hydrogen-containing silicone oil emulsion and platinum catalyst evenly to obtain the second component; mix the first component and the second component to obtain a moisture-wicking and quick-drying functional finishing agent; after mixing the first component and the second component, immediately use it to finish polyester fabrics, and after drying at 80~90℃ for 2~5h, the silanol groups contained in the second component crosslink with the double bonds contained in the polyether polyester copolymer and modified sericin in the first component, and the crosslinking reaction occurs on the surface / inside of the fabric; In the first component, the concentration of polyether polyester copolymer is 10~15g / L, the concentration of modified sericin is 2~5g / L, and the remainder is water; in the second component, the mass ratio of hydrogen-containing silicone oil emulsion to platinum catalyst is (100~150):0.

001. In the moisture-wicking and quick-drying functional finishing agent, the mass ratio of the first component to the second component is (8~9):(1~2); The preparation of the modified sericin includes the following steps: Take raw silk, place it in Na2CO3 aqueous solution, treat it at 95~100℃ for 6~8h, dialyze it in water and centrifuge to remove impurities, add methacrylic anhydride, treat it at 0~5℃ and pH 7~8 for 6~8h, dialyze it in water and concentrate it in polyethylene glycol for 48~72h to obtain modified sericin. The quaternary ammonium salt comprises the following raw materials, by mass parts: 20-25 parts dimethylallylamine, 20-25 parts epichlorohydrin, and 80-100 parts tetrahydrofuran; the modified quaternary ammonium salt comprises the following raw materials, by mass parts: 5-10 parts quaternary ammonium salt, 80-100 parts water, and 8-15 parts N,N'-di(aminoethyl)-piperazine.

2. The preparation method of the moisture-absorbing and quick-drying functional finishing agent according to claim 1, characterized in that: The polyether polyester copolymer comprises the following raw materials, by mass parts: 8-15 parts terephthalic acid, 50-60 parts polyethylene glycol, 3-5 parts modified quaternary ammonium salt, and 0.01-0.02 parts tetrabutyl titanate.

3. The preparation method of the moisture-absorbing and quick-drying functional finishing agent according to claim 1, characterized in that: The modified sericin comprises the following raw materials, by mass: 3-6 parts raw silk, 100-120 parts Na2CO3 aqueous solution, and 0.2-0.4 parts methacrylic anhydride.

4. The moisture-absorbing and quick-drying functional finishing agent prepared by the preparation method of the moisture-absorbing and quick-drying functional finishing agent according to any one of claims 1 to 3.

5. The application of the moisture-absorbing and quick-drying functional finishing agent according to claim 4, characterized in that: For surface treatment of polyester fabrics, the following steps are included: subjecting the polyester fabric to two dips and two nips, and drying at 80~90℃ for 2~5 hours.