Anti-wrinkle garment fabric and method of making same

Abstract

The application discloses an anti-wrinkle garment fabric and a preparation method thereof, and relates to the technical field of fabrics.The preparation method comprises the following steps: blending cotton fibers and polyester fibers to prepare warp yarn and weft yarn respectively, spinning the warp yarn and the weft yarn into blended fabric, immersing the blended fabric in a special finishing liquid, carrying out two-dip-two-roll, baking, washing, and air-drying to obtain the anti-wrinkle garment fabric.The anti-wrinkle garment fabric is synergized by physical structure and chemical finishing, and has excellent wrinkle resistance and shape retention, can effectively resist wrinkles and easily recover flatness after wearing and washing, and has the softness, air permeability of cotton and the stiffness and durability of polyester, and has the functions of persistent anti-static and antibacterial, so that the fabric is comfortable, beautiful, easy to maintain, healthy and protective, and has outstanding comprehensive performance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fabric, in particular to an anti-wrinkle garment fabric and a preparation method thereof. BACKGROUND

[0002] With the development of social economy and the acceleration of life pace, consumers' requirements for garment fabric are increasingly improved, not only pursuing its comfort and beauty, but also putting forward higher standards for its functionality and easy care. As a key indicator to measure the easy care performance of fabric, wrinkle resistance has always been a hot spot in the field of textiles.

[0003] Cotton fiber, as a natural cellulose fiber, its main chemical component is cellulose macromolecule. The dense hydrophilic hydroxyl (-OH) groups on the molecular chain endow cotton fabric with excellent moisture absorption and air permeability, soft touch and skin friendliness, making it one of the most popular clothing materials. However, this chemical structure is also the root of its shortcomings: under the action of water molecules, the hydrogen bonds between cotton fiber macromolecular chains are easy to break, and under the action of external force, the molecular chain slips and forms new hydrogen bonds at the new position, thus "fixing" the wrinkles. Therefore, pure cotton fabric usually has poor elastic recovery, is easy to wrinkle and difficult to recover, and has poor shape retention, which brings inconvenience to consumers' daily wear and care.

[0004] Polyethylene terephthalate (PET), commonly known as polyester fiber, is an important synthetic fiber. Its macromolecular structure is regular, the crystallinity is high, and the molecular chain is rigid, which makes polyester fabric have excellent strength, excellent elastic recovery ability and dimensional stability, thus having excellent wrinkle resistance and shape memory effect. However, polyester fiber lacks hydrophilic groups, its poor moisture absorption leads to a stuffy feeling and a decrease in comfort when worn; at the same time, low water content also makes it easy to generate and accumulate static electricity due to friction in dry environment, causing the fabric to stick to the body and adsorb dust, affecting the wearing experience and appearance.

[0005] Blending cotton fiber with polyester fiber is a common method to improve the performance of single fiber, which can take into account the advantages of both to some extent, but to achieve excellent wrinkle resistance, usually still needs to rely on chemical finishing technology.

[0006] At present, the mainstream fabric wrinkle finishing technology on the market mainly includes resin finishing and silicone finishing. Traditional resin finishing (such as N-hydroxymethyl resin such as DMDHEU) can obtain excellent wrinkle resistance by cross-linking with the hydroxyl groups on the cellulose molecules of cotton fiber, but there is a problem of free formaldehyde release in the finishing process, which poses a threat to human health and the ecological environment, and has been gradually restricted. Although subsequent non-formaldehyde finishing agents such as polycarboxylic acid have been developed, they still have the disadvantages of high cost, easy to cause fabric yellowing and strength reduction, and the need for harsh catalytic conditions such as high temperature and strong acid.

[0007] On the other hand, silicone finishing agents are widely used because they can impart excellent softness and smoothness to fabrics. CN111962199A discloses a yew tencel cotton double-sided functional fabric and a preparation method thereof. The fabric is made of yew fiber, tencel and cotton fiber. The addition of yew fiber greatly improves the antibacterial performance of the fabric after antibacterial finishing. The addition of tencel improves the comfort, toughness and softness of the fabric. The addition of cotton fiber improves the strength, rubbing fastness, hydrophilic performance of the fabric. The addition of silicone finishing improves the dimensional stability, wrinkle resistance, water resistance, air permeability and abrasion resistance of the fabric. The addition of organofluorine finishing improves the water repellency, oil resistance, stain resistance, washing resistance, heat resistance and corrosion resistance of the fabric.

[0008] However, conventional silicone finishing agents (such as amino silicone oil, hydroxyl silicone oil, etc.) mainly form a physical lubricating film on the surface of the fiber, which provides limited wrinkle resistance and weak bonding with the fiber. The finishing effect is not durable and not resistant to washing. In addition, existing finishing agents have single functions and cannot meet the market demand for multifunctional composite such as wrinkle resistance, softness, antistatic, antibacterial, etc.

[0009] Therefore, it has become a technical problem to be solved in the art to develop a new finishing agent and a preparation method thereof, which do not contain formaldehyde, cause little damage to fabrics, and can impart excellent and durable wrinkle resistance, softness and additional functions such as antistatic and antibacterial to fabrics. SUMMARY

[0010] To solve the problems in the prior art, the purpose of the present application is to provide an anti-wrinkle garment fabric and a preparation method thereof. The anti-wrinkle garment fabric not only effectively resists wrinkles and easily recovers flatness after wearing and washing, but also has the softness and air permeability of cotton and the crispness and durability of polyester. The persistent antistatic and antibacterial functions make the fabric comfortable, beautiful, easy to care for, healthy and protective, and have outstanding comprehensive performance.

[0011] To achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0012] A preparation method of an anti-wrinkle garment fabric, comprising the following steps: blending cotton fibers and polyester fibers to form warp yarns and weft yarns, spinning the warp yarns and the weft yarns into a blended fabric, immersing the blended fabric in a finishing liquid, performing two immersions and two wrappings, baking, washing, and air drying to obtain the anti-wrinkle garment fabric.

[0013] Preferably, the mass ratio of cotton fiber and polyester fiber in the warp yarn is 40-60:40-60, the mass ratio of cotton fiber and polyester fiber in the weft yarn is 60-80:20-40, the count of the warp yarn is 40S, the count of the weft yarn is 40S, the warp density of the fabric is 400-600 pieces / 100 cm, and the weft density is 300-360 pieces / 10 cm.

[0014] Preferably, the bath ratio during the dipping is 10-20:1, the dipping temperature is 40-50℃, the dipping time is 10-20 min, and the baking conditions include pre-baking at 70-90℃ for 5-15 min and baking at 130-170℃ for 4-12 min.

[0015] Preferably, the finishing liquid is prepared by the following method steps:

[0016] (1) L-cysteine and a photoinitiator are added to an ethanol / water mixed solvent, stirred to disperse uniformly, then ethylene silicone oil is slowly added dropwise under a nitrogen atmosphere, and the reaction is carried out under ultraviolet irradiation. The product is rotary-evaporated to remove the solvent, and a modified ethylene silicone oil is obtained.

[0017] The photoinitiated thiol-ene addition reaction: under ultraviolet irradiation and the action of a photoinitiator, the mercapto group (-SH) of L-cysteine forms a sulfur free radical (-S·), which attacks the carbon-carbon double bond with high electron cloud density on the side chain of the ethylene silicone oil to form a stable sulfide bond (-S-). This process successfully grafts the cysteine structural unit containing an amino group and a carboxyl group onto the polysiloxane main chain to obtain a multifunctional modified ethylene silicone oil.

[0018] Preferably, in step (1), the ethylene silicone oil is a side-chain ethylene silicone oil, and the vinyl content is 0.4-1.2%.

[0019] Preferably, in step (1), the amount ratio of L-cysteine, photoinitiator, ethanol / water mixed solvent, and ethylene silicone oil is 0.2-0.4 g:0.05-0.2 g:50-80 mL:10 g; and the volume ratio of ethanol and deionized water in the ethanol / water mixed solvent is 85-95:5-15.

[0020] Preferably, in step (1), the ultraviolet irradiation reaction conditions are 25-40℃, 365 nm main wavelength ultraviolet light, and stirring reaction for 2-8 h.

[0021] (2) The modified ethylene silicone oil and triethylamine are added to DMF, stirred to disperse uniformly, then trimethylammonium chloride is added, and the reaction is carried out under heating in a nitrogen atmosphere. The product is cooled, precipitated in excess acetone, filtered, washed, and dried to obtain a finishing agent.

[0022] Nucleophilic substitution quaternization reaction: the nitrogen atom of the amino group (-NH2) in the first step product is used as the nucleophilic center to attack the methylene carbon connected with chlorine in trimethyl chloromethyl ammonium chloride, and the byproduct hydrogen chloride generated in the process is immediately neutralized by triethylamine, a Lewis base, and a quaternary ammonium salt functional group with a permanent positive charge is successfully constructed on the silicone oil side chain.

[0023] Preferably, in step (2), the amount of modified vinyl silicone oil, triethylamine, DMF, and trimethyl chloromethyl ammonium chloride is 10g: 0.21-0.42g: 40-80mL: 0.35-1.4g.

[0024] Preferably, in step (2), the heating reaction condition is 50-80℃ for 6-24h.

[0025] (3) The finishing agent is diluted with deionized water under high-speed stirring, and the pH is adjusted to obtain a finishing liquid.

[0026] Preferably, in step (3), the mass ratio of the finishing agent to deionized water is 1:10-20, and the pH of the system is adjusted to 5-6.

[0027] The application also claims a wrinkle-resistant garment fabric prepared by the preparation method.

[0028] Compared with the prior art, the application has the following beneficial effects:

[0029] 1. The application provides a wrinkle-resistant garment fabric, which is prepared by blending cotton and polyester, constructing a fabric skeleton with excellent resilience, and combining efficient double-dipping and double-padding with segmented temperature control baking process to ensure that the finishing agent uniformly penetrates and firmly crosslinks on the fibers. The garment fabric prepared by the method has excellent wrinkle resistance and form retention, and also has the advantages of skin-friendly breathability of cotton and crispness and durability of polyester, realizing the organic unification of function and comfort.

[0030] 2. The application provides a finishing agent, which has a flexible silicone main chain as a core skeleton, which not only gives the fabric excellent softness and smoothness, but also provides basic elastic recovery, and after finishing, a porous film is formed on the fiber surface, so that the fabric maintains good breathability. Secondly, the carboxyl functional groups introduced by L-cysteine undergo esterification with the hydroxyl groups on the surface of the cotton fibers at high temperatures in the baking process, forming a stable covalent crosslinking network. This network gives the fabric excellent form memory ability, and when subjected to external pressure to produce wrinkles, it can provide effective resilience to return the fibers to the initial state, thereby achieving excellent wrinkle resistance. Finally, the quaternary ammonium salt groups introduced by chemical grafting can effectively adsorb and destroy the negatively charged bacterial cell membrane, giving the fabric broad-spectrum antibacterial function; and this firm chemical grafting structure ensures that the antibacterial and antistatic functions have excellent washing resistance and durability. DETAILED DESCRIPTION

[0031] In order to make the objects, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with embodiments. Of course, the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0032] Unless otherwise specified, the chemicals and materials in the present application are purchased through market channels or synthesized from raw materials purchased through market channels.

[0033] The vinyl silicone oil is a side-chain vinyl silicone oil, and the vinyl content is 0.4-1.2%, which is purchased from Shenzhen Jipeng Silicon Fluorine Material Co., Ltd.

[0034] A preparation method of an anti-wrinkle garment fabric, comprising the following steps:

[0035] (1) 0.2-0.4 g of L-cysteine and 0.05-0.2 g of a photoinitiator are added into 50-80 mL of an ethanol / water mixed solvent (the volume ratio of ethanol to deionized water is 85-95:5-15), and stirred to disperse uniformly, then 10 g of vinyl silicone oil is slowly added dropwise under a nitrogen atmosphere, and irradiated and stirred to react under 365 nm main wavelength ultraviolet light at 25-40 °C for 2-8 h, and the product is spin-evaporated to remove the solvent to obtain modified vinyl silicone oil;

[0036] (2) 10 g of the modified vinyl silicone oil and 0.21-0.42 g of triethylamine are added into 40-80 mL of DMF, and stirred to disperse uniformly, then 0.35-1.4 g of trimethylchloromethylammonium chloride is added, and heated to react under a nitrogen atmosphere at 50-80 °C for 6-24 h, and the product is cooled, precipitated in excess acetone, filtered, washed, and dried to obtain a finishing agent;

[0037] (3) 1 g of the finishing agent is diluted with 10-20 g of deionized water under high-speed stirring, and the pH is adjusted to 5-6 to obtain a finishing liquid;

[0038] (4) Cotton fiber and polyester fiber are blended and made into warp and weft yarns respectively. The mass ratio of cotton fiber to polyester fiber in the warp yarn is 40-60:40-60, and the mass ratio of cotton fiber to polyester fiber in the weft yarn is 60-80:20-40. The warp and weft yarns are spun into a blended fabric with a warp count of 40S and a weft count of 40S. The warp density of the fabric is 400-600 ends / 100cm, and the weft density is 300-360 ends / 10cm. The blended fabric is immersed in a finishing solution, dipped and rubbed twice. The bath ratio during immersion is 10-20:1, the immersion temperature is 40-50℃, and the immersion time is 10-20min. It is pre-dried at 70-90℃ for 5-15min, and then baked at 130-170℃ for 4-12min. After washing and air drying, the wrinkle-resistant clothing fabric is obtained.

[0039] The present invention will be further described below through specific embodiments.

[0040] Example 1

[0041] A method for preparing a wrinkle-resistant clothing fabric includes the following steps:

[0042] (1) 0.4 g L-cysteine ​​and 0.2 g photoinitiator 2,2-dimethoxy-2-phenylacetophenone were added to 70 mL of ethanol / water mixed solvent (ethanol and deionized water volume ratio of 90:10), stirred to disperse evenly, and then 10 g vinyl silicone oil was slowly added dropwise under nitrogen atmosphere. The mixture was irradiated at 40 °C and under 365 nm main wavelength ultraviolet light and stirred for 2 h. The solvent was removed by rotary evaporation of the product to obtain modified vinyl silicone oil.

[0043] (2) Add 10g of modified vinyl silicone oil and 0.42g of triethylamine to 60mL of DMF, stir to disperse evenly, then add 1.4g of trimethylchloromethylammonium chloride, heat and react at 80°C under nitrogen atmosphere for 6h, cool the product, precipitate it in excess acetone, filter, wash and dry to obtain the finishing agent;

[0044] (3) Dilute 1g of finishing agent with 15g of deionized water under high-speed stirring, adjust the pH to 5.5, and obtain the finishing solution;

[0045] (4) Cotton fiber and polyester fiber are blended and made into warp and weft yarns respectively. The mass ratio of cotton fiber to polyester fiber in the warp yarn is 60:40, and the mass ratio of cotton fiber to polyester fiber in the weft yarn is 80:20. The warp and weft yarns are spun into a blended fabric with a warp count of 40S and a weft count of 40S. The warp density of the fabric is 500 ends / 100cm and the weft density is 320 ends / 10cm. The blended fabric is immersed in a finishing solution, dipped and rubbed twice. The bath ratio during immersion is 15:1, the immersion temperature is 45℃, and the immersion time is 15min. It is pre-dried at 80℃ for 10min, then baked at 150℃ for 8min, washed with water, and air-dried to obtain the wrinkle-resistant clothing fabric.

[0046] Example 2

[0047] A method for preparing a wrinkle-resistant clothing fabric includes the following steps:

[0048] (1) 0.3g L-cysteine ​​and 0.15g photoinitiator 2,2-dimethoxy-2-phenylacetophenone were added to 70mL of ethanol / water mixed solvent (ethanol and deionized water volume ratio of 90:10), stirred to disperse evenly, and then 10g vinyl silicone oil was slowly added dropwise under nitrogen atmosphere. The mixture was irradiated at 35℃ and under 365nm main wavelength ultraviolet light and stirred for 2-8h. The solvent was removed by rotary evaporation of the product to obtain modified vinyl silicone oil.

[0049] (2) Add 10g of modified vinyl silicone oil and 0.35g of triethylamine to 60mL of DMF, stir to disperse evenly, then add 1.05g of trimethylchloromethylammonium chloride, heat and react at 70°C under nitrogen atmosphere for 12h, cool the product, precipitate it in excess acetone, filter, wash and dry to obtain the finishing agent;

[0050] (3) Dilute 1g of finishing agent with 15g of deionized water under high-speed stirring, adjust the pH to 5.5, and obtain the finishing solution;

[0051] (4) Cotton fiber and polyester fiber are blended and made into warp and weft yarns respectively. The mass ratio of cotton fiber to polyester fiber in the warp yarn is 60:40, and the mass ratio of cotton fiber to polyester fiber in the weft yarn is 80:20. The warp and weft yarns are spun into a blended fabric with a warp count of 40S and a weft count of 40S. The warp density of the fabric is 500 ends / 100cm and the weft density is 320 ends / 10cm. The blended fabric is immersed in a finishing solution, dipped and rubbed twice. The bath ratio during immersion is 15:1, the immersion temperature is 45℃, and the immersion time is 15min. It is pre-dried at 80℃ for 10min, then baked at 150℃ for 8min, washed with water, and air-dried to obtain the wrinkle-resistant clothing fabric.

[0052] Example 3

[0053] A method for preparing a wrinkle-resistant clothing fabric includes the following steps:

[0054] (1) 0.3g L-cysteine ​​and 0.1g photoinitiator 2,2-dimethoxy-2-phenylacetophenone were added to 70mL of ethanol / water mixed solvent (ethanol and deionized water volume ratio of 90:10), stirred to disperse evenly, and then 10g vinyl silicone oil was slowly added dropwise under nitrogen atmosphere. The mixture was irradiated at 30℃ and under 365nm main wavelength ultraviolet light and stirred for 6h. The solvent was removed by rotary evaporation of the product to obtain modified vinyl silicone oil.

[0055] (2) Add 10g of modified vinyl silicone oil and 0.28g of triethylamine to 60mL of DMF, stir to disperse evenly, then add 0.7g of trimethylchloromethylammonium chloride, heat and react at 60°C under nitrogen atmosphere for 18h, cool the product, precipitate it in excess acetone, filter, wash and dry to obtain the finishing agent.

[0056] (3) Dilute 1g of finishing agent with 15g of deionized water under high-speed stirring, adjust the pH to 5.5, and obtain the finishing solution;

[0057] (4) Cotton fiber and polyester fiber are blended and made into warp and weft yarns respectively. The mass ratio of cotton fiber to polyester fiber in the warp yarn is 60:40, and the mass ratio of cotton fiber to polyester fiber in the weft yarn is 80:20. The warp and weft yarns are spun into a blended fabric with a warp count of 40S and a weft count of 40S. The warp density of the fabric is 500 ends / 100cm and the weft density is 320 ends / 10cm. The blended fabric is immersed in a finishing solution, dipped and rubbed twice. The bath ratio during immersion is 15:1, the immersion temperature is 45℃, and the immersion time is 15min. It is pre-dried at 80℃ for 10min, then baked at 150℃ for 8min, washed with water, and air-dried to obtain the wrinkle-resistant clothing fabric.

[0058] Example 4

[0059] A method for preparing a wrinkle-resistant clothing fabric includes the following steps:

[0060] (1) 0.2g L-cysteine ​​and 0.05g photoinitiator 2,2-dimethoxy-2-phenylacetophenone were added to 70mL of ethanol / water mixed solvent (ethanol and deionized water volume ratio of 90:10), stirred to disperse evenly, and then 10g vinyl silicone oil was slowly added dropwise under nitrogen atmosphere. The mixture was irradiated and stirred for 8h under 25℃ and 365nm main wavelength ultraviolet light. The solvent was removed by rotary evaporation of the product to obtain modified vinyl silicone oil.

[0061] (2) Add 10g of modified vinyl silicone oil and 0.21g of triethylamine to 60mL of DMF, stir to disperse evenly, then add 0.35g of trimethylchloromethylammonium chloride, heat and react at 50°C under nitrogen atmosphere for 24h, cool the product, precipitate it in excess acetone, filter, wash and dry to obtain the finishing agent;

[0062] (3) Dilute 1g of finishing agent with 15g of deionized water under high-speed stirring, adjust the pH to 5.5, and obtain the finishing solution;

[0063] (4) Cotton fiber and polyester fiber are blended and made into warp and weft yarns respectively. The mass ratio of cotton fiber to polyester fiber in the warp yarn is 60:40, and the mass ratio of cotton fiber to polyester fiber in the weft yarn is 80:20. The warp and weft yarns are spun into a blended fabric with a warp count of 40S and a weft count of 40S. The warp density of the fabric is 500 ends / 100cm and the weft density is 320 ends / 10cm. The blended fabric is immersed in a finishing solution, dipped and rubbed twice. The bath ratio during immersion is 15:1, the immersion temperature is 45℃, and the immersion time is 15min. It is pre-dried at 80℃ for 10min, then baked at 150℃ for 8min, washed with water, and air-dried to obtain the wrinkle-resistant clothing fabric.

[0064] Comparative Example 1

[0065] A method for preparing a wrinkle-resistant clothing fabric includes the following steps:

[0066] (1) 0.4 g L-cysteine ​​and 0.2 g photoinitiator 2,2-dimethoxy-2-phenylacetophenone were added to 70 mL of ethanol / water mixed solvent (ethanol and deionized water volume ratio of 90:10), stirred to disperse evenly, and then 10 g vinyl silicone oil was slowly added dropwise under nitrogen atmosphere. The mixture was irradiated at 40 °C and under 365 nm main wavelength ultraviolet light and stirred for 2 h. The solvent was removed by rotary evaporation of the product to obtain modified vinyl silicone oil.

[0067] (2) 0.88g of modified vinyl silicone oil and 0.12g of trimethylchloromethylammonium chloride were diluted with 15g of deionized water under high-speed stirring, and the pH was adjusted to 5.5 to obtain the finishing solution;

[0068] (3) Cotton fiber and polyester fiber are blended and made into warp and weft yarns respectively. The mass ratio of cotton fiber to polyester fiber in the warp yarn is 60:40, and the mass ratio of cotton fiber to polyester fiber in the weft yarn is 80:20. The warp and weft yarns are spun into a blended fabric with a warp count of 40S and a weft count of 40S. The warp density of the fabric is 500 ends / 100cm and the weft density is 320 ends / 10cm. The blended fabric is immersed in a finishing solution, dipped and rubbed twice. The bath ratio during immersion is 15:1, the immersion temperature is 45℃, the immersion time is 15min, pre-drying at 80℃ for 10min, then baking at 150℃ for 8min, washing with water, and air drying to obtain the wrinkle-resistant clothing fabric.

[0069] Comparative Example 2

[0070] A method for preparing a wrinkle-resistant clothing fabric includes the following steps:

[0071] (1) Dilute 1 vinyl silicone oil with 15g deionized water under high-speed stirring, adjust the pH to 5.5, and obtain the finishing solution;

[0072] (2) Cotton fiber and polyester fiber are blended and made into warp and weft yarns respectively. The mass ratio of cotton fiber to polyester fiber in the warp yarn is 60:40, and the mass ratio of cotton fiber to polyester fiber in the weft yarn is 80:20. The warp and weft yarns are spun into a blended fabric with a warp count of 40S and a weft count of 40S. The warp density of the fabric is 500 ends / 100cm and the weft density is 320 ends / 10cm. The blended fabric is immersed in a finishing solution, dipped and rubbed twice. The bath ratio during immersion is 15:1, the immersion temperature is 45℃, and the immersion time is 15min. It is pre-dried at 80℃ for 10min, then baked at 150℃ for 8min, washed with water, and air-dried to obtain the wrinkle-resistant clothing fabric.

[0073] The fabrics prepared in Examples 1-4 and Comparative Examples 1-2 were subjected to performance tests. Antimicrobial properties were determined according to GB / T 20944.3-2008 "Evaluation of Antimicrobial Properties of Textiles - Part 3: Shaking Method". The test bacteria were Gram-negative bacteria - *Escherichia coli* (AATCC 29522) and fungi - *Candida albicans* (ATCC 10231). The prepared fabrics were placed in a 5g / L standard detergent aqueous solution at a bath ratio of 1g:40mL at 40℃ and washed in a household washing machine for 10 minutes per wash. The fabrics were then dried in an oven at 80℃ for a total of 50 washes. The antimicrobial properties of the fabrics after 50 washes were tested according to GB / T 20944.3-2008. Specific data are shown in Table 1.

[0074] Table 1. Test results of antibacterial properties of the fabric

[0075]

[0076] The fabric wrinkle recovery angle is expressed as the sum of the longitudinal wrinkle recovery angle and the transverse wrinkle recovery angle. The larger the value, the less likely the garment is to wrinkle during wear, and the better its appearance. The fabric prepared according to this invention was tested for wrinkle resistance using a YG(B)541E fabric wrinkle elasticity tester (Wenzhou Darong Textile Instrument Co., Ltd.), referring to GB / T3819-1997 "Textiles - Determination of Crease Recovery Property - Method of Recovery Angle". The sample dimensions are 20×15mm for the recovery wings and 20×40mm for the fixed wings, with a convex shape. Five samples are prepared longitudinally and five transversely. The samples are equilibrated for 24 hours under constant temperature and humidity conditions. Then, the testing software is opened, the test method is set to the vertical method, and the instrument is started. The instrument will automatically complete one revolution. After rotation, the fixed wings of the sample are installed on the holder, the recovery wings are folded, and the pressure plate is closed. The remaining samples are installed in the same way. After all samples are installed, the instrument will automatically start the experiment. When the sample is subjected to pressure for 5 minutes, the instrument will automatically remove the weight. After the sample is unloaded for 5 minutes, the instrument will automatically measure the crease recovery angle. The experimental result is the average of the five samples. The air permeability of the fabric is tested according to GB / T 5453-1997 "Determination of Air Permeability of Textiles". See Table 2 for details.

[0077] Table 2. Test results of fabric wrinkle resistance and breathability.

[0078]

[0079] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A method for preparing a wrinkle-resistant clothing fabric, characterized in that, The process includes the following steps: blending cotton fibers and polyester fibers to make warp and weft yarns respectively; spinning the warp and weft yarns into a blended fabric; immersing the blended fabric in a finishing solution; performing two dips and two nips; baking; washing; and air drying to obtain the wrinkle-resistant clothing fabric. The finishing solution is prepared by the following steps: (1) Add L-cysteine ​​and photoinitiator to an ethanol / water mixed solvent, stir to disperse evenly, then slowly add vinyl silicone oil dropwise under a nitrogen atmosphere, react under ultraviolet irradiation, remove the solvent by rotary evaporation of the product to obtain modified vinyl silicone oil; (2) Add modified vinyl silicone oil and triethylamine to DMF, stir to disperse evenly, then add trimethylchloromethylammonium chloride, heat to react under nitrogen atmosphere, cool the product, precipitate in excess acetone, filter, wash and dry to obtain finishing agent; (3) Dilute the finishing agent with deionized water under high-speed stirring, adjust the pH, and obtain the finishing solution.

2. The preparation method according to claim 1, characterized in that, In step (1), the vinyl silicone oil is a side-chain vinyl silicone oil with a vinyl content of 0.4~1.2%.

3. The preparation method according to claim 1, characterized in that, In step (1), the ratio of L-cysteine, photoinitiator, ethanol / water mixed solvent, and vinyl silicone oil is 0.2~0.4g:0.05~0.2g:50~80mL:10g; the volume ratio of ethanol and deionized water in the ethanol / water mixed solvent is 85~95:5~15.

4. The preparation method according to claim 1, characterized in that, In step (1), the ultraviolet irradiation reaction conditions are 25~40℃, irradiation under 365nm main wavelength ultraviolet light, and stirring reaction for 2~8h.

5. The preparation method according to claim 1, characterized in that, In step (2), the ratio of modified vinyl silicone oil, triethylamine, DMF and trimethylchloromethylammonium chloride is 10g: 0.21~0.42g: 40~80mL: 0.35~1.4g.

6. The preparation method according to claim 1, characterized in that, In step (2), the heating reaction conditions are 50~80℃ for 6~24h.

7. The preparation method according to claim 1, characterized in that, In step (3), the mass ratio of finishing agent to deionized water is 1:10~20, and the pH of the system is adjusted to 5~6.

8. The preparation method according to claim 1, characterized in that, The bath ratio for immersion is 10~20:1, the immersion temperature is 40~50℃, the immersion time is 10~20min, and the baking conditions include pre-baking at 70~90℃ for 5~15min, followed by baking at 130~170℃ for 4~12min.

9. A wrinkle-resistant clothing fabric prepared by the preparation method according to any one of claims 1 to 8.

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