Preparation process of crease-resistant skin-friendly fabric

Abstract

The invention discloses a preparation process of a crease-resistant skin-friendly fabric, and relates to the technical field of multi-layer fabrics. The fabric adopted by the invention sequentially comprises a linen fiber fabric, crease-resistant strips, a bamboo fiber fabric, crease-resistant strips and a cotton fiber fabric from top to bottom; wherein the crease-resistant strip is an aerogel foaming body with a shape memory function, a polymer gel precursor solution is formed through a sulfydryl-epoxy group click reaction, then a foamable solution is added, and heating is performed to obtain a wet gel foaming body with a double cross-linked network, so that the strength of the crease-resistant strip is improved, and the strength of the fabric is further improved; the fabric has good viscosity and can bond various fabrics, then long-strip-shaped wet gel foaming bodies are smeared on the surfaces of the fabrics at intervals, the fabrics are slowly soaked, fibers are wrapped, the fibers among the fabrics are cross-linked and cooperate with shape memory of the aerogel foaming bodies, the wrinkle resistance of the fabrics is improved, and then the fabrics are frozen and solidified to form wrinkle-resistant strips of aerogel structures, so that the wrinkle-resistant fabric is formed. The wrinkle resistance of the fabric is further improved.

Description

Technical Field

[0001] The invention relates to the technical field of multi-layer fabrics, and in particular to a preparation process of wrinkle-resistant skin-friendly fabrics. Background Art

[0002] Fabric is the material used to make clothes. As one of the three elements of clothing, fabric can not only interpret the style and characteristics of clothing, but also directly affect the color and shape of clothing. With the progress of society and the improvement of human living standards, people begin to pay attention to the neatness and crispness of the appearance of clothing that reflects the external image. The wrinkle-proof fabrics in the prior art are mainly prepared by post-finishing, but the finishing agents often have a single function, and various types of finishing agents often have antagonistic effects on fabric finishing, resulting in low finishing effects. The most commonly used wrinkle-proof finishing agents are amide-formaldehyde finishing agents, especially N-hydroxymethylamide compounds, such as dihydroxymethyl dihydroxyethylene urea. This type of wrinkle-proof finishing uses the etherification reaction between hydroxymethyl and hydroxyl groups on fiber fabrics to produce covalent crosslinking to achieve the purpose of wrinkle-proofing. It has a good wrinkle-proofing effect, but there is a problem of formaldehyde release during production and wearing, which limits its promotion and application. Summary of the invention

[0003] The purpose of the present invention is to provide a preparation process of wrinkle-proof skin-friendly fabric to solve the problems existing in the prior art.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: an anti-wrinkle skin-friendly fabric, wherein the anti-wrinkle skin-friendly fabric is, from top to bottom, linen fiber fabric-anti-wrinkle strip-bamboo fiber fabric-anti-wrinkle strip-cotton fiber fabric;

[0005] The anti-wrinkle skin-friendly fabric is prepared by the following method:

[0006] (1) mixing epoxy resin and N,N-dimethylformamide, stirring at 100 rpm for 15 to 30 min, heating to 40 to 60° C., adding mercaptobutyric acid, and stirring at 70 rpm for 10 to 20 min to obtain a polymer gel precursor solution;

[0007] (2) Mix the foaming liquid, polymer gel precursor solution, organic peroxide, deionized water, and tetramethylammonium hydroxide, stir at 100 rpm for 30 to 40 min, pour into a stirring device, stir at 40 to 60° C. and 300 to 500 rpm for 12 to 20 h, stop stirring, seal and place for 18 to 22 h, take out, cut into long strips, and obtain a wet gel foam;

[0008] (3) Pasting wet gel foam on one side of the linen fiber fabric and on both sides of the bamboo fiber fabric, laminating the linen fiber fabric, the bamboo fiber fabric and the cotton fiber fabric under a pressure of 4 to 8 MPa, and then soaking in acetone for 12 hours, taking out, and drying at -18°C for 24 hours to obtain a wrinkle-resistant skin-friendly fabric.

[0009] Furthermore, the epoxy resin in step (1) is epoxy resin E51 or epoxy resin E44.

[0010] Furthermore, in step (1), the epoxy resin and mercaptobutyric acid are in a molar ratio of 100:100 to 120.

[0011] Furthermore, in step (1), the mass ratio of the epoxy resin to N,N-dimethylformamide is 1:8-15.

[0012] Furthermore, the organic peroxide in step (2) is benzoyl peroxide, tert-butyl benzoyl peroxide or methyl ethyl ketone peroxide.

[0013] Furthermore, the mass ratio of ethyl isocyanate acrylate, (2Z, 4E)-2,4-hexadienoic acid and foaming agent in the foaming liquid of step (2) is 10-20:35-55:4-10.

[0014] Furthermore, the foaming agent is azodicarbonamide and zinc oxide in a mass ratio of 6-10:1.0-1.5.

[0015] Furthermore, in step (2), the mass ratio of the foaming liquid, the polymer gel precursor solution, the organic peroxide, the deionized water and the tetramethylammonium hydroxide is 0.2-0.5:1:0.001-0.005:1:0.001-0.005.

[0016] Furthermore, the flax fiber fabric in step (3) has a gram weight of 120 g / m 2 , Bamboo fiber fabric weight is 100g / m 2 , cotton fiber fabric weight is 100g / m 2 .

[0017] Furthermore, in step (3), the wet gel foams are pasted with each other at intervals of 1 to 3 cm.

[0018] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0019] The fabrics used in the present invention are, from top to bottom, flax fiber fabric-anti-wrinkle strip-bamboo fiber fabric-anti-wrinkle strip-cotton fiber fabric; wherein the anti-wrinkle strip is an aerogel foam with shape memory function, and mercaptobutyric acid and epoxy resin are used as raw materials, and a polymer gel precursor solution with multiple crosslinking points is formed through a click reaction, and then a solution consisting of isocyanate ethyl acrylate, (2Z, 4E)-2,4-hexadienoic acid and a foaming agent is added to the precursor solution, and heated to obtain a wet gel foam, and the isocyanate group and the double bond participate in the secondary crosslinking of the polymer, so that the wet gel foam forms a double crosslinking network, improves the strength of the anti-wrinkle strip, and further improves the strength of the fabric, because the foam contains carboxyl groups and has good viscosity, so that the finally formed anti-wrinkle strip can bond various fabrics, and then the long strips of wet gel foam are applied at intervals on the surface of the fabric, slowly infiltrating the fabric, wrapping various fibers, so that the fibers between the fabrics are crosslinked, coordinating the shape memory of the aerogel foam, and improving the wrinkle resistance of the fabric, and then freezing and solidifying to form the anti-wrinkle strip of the aerogel structure, further improving the wrinkle resistance of the fabric. DETAILED DESCRIPTION

[0020] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0021] In order to more clearly illustrate the method provided by the present invention, the following examples are used to describe in detail the test methods of various indicators of the wrinkle-resistant skin-friendly fabrics prepared in the following examples.

[0022] Wrinkle resistance: measured on a TNG01 crease recovery instrument with reference to GB / T3819-1997 “Determination of crease recovery of textile fabrics - Recovery angle method”.

[0023] Breaking strength test: refer to GB / T3923.1-1997 "Tensile properties of textile fabrics Part 1: Determination of breaking strength and elongation at break by strip method", and measure on YG026A electronic fabric strength tester.

[0024] Example 1; (1) epoxy resin E51 and N,N-dimethylformamide were mixed in a mass ratio of 1:8, stirred at 100 rpm for 15 min, heated to 40° C., mercaptobutyric acid was added, and stirred at 70 rpm for 10 min to obtain a polymer gel precursor solution; the epoxy resin E51 and mercaptobutyric acid were in a molar ratio of 100:100;

[0025] (2) ethyl isocyanate acrylate, (2Z, 4E)-2,4-hexadienoic acid, and a foaming agent are mixed in a mass ratio of 10:35:4 to obtain a foaming liquid; the foaming liquid, polymer gel precursor solution, benzoyl peroxide, deionized water, and tetramethylammonium hydroxide are mixed in a mass ratio of 0.2:1:0.001:1:0.001, stirred at 100 rpm for 30 min, poured into a stirring device, stirred at 40° C. and 300 rpm for 12 h, stopped stirring, sealed and placed for 18 h, taken out, cut into long strips, and obtained a wet gel foam; the foaming agent is azodicarbonamide and zinc oxide in a mass ratio of 6:1;

[0026] (3) At a weight of 120 g / m 2 One side of the linen fabric has a gram weight of 100g / m 2 Wet gel foam is pasted on both sides of the bamboo fiber fabric, with a spacing of 1 cm. Under a pressure of 4 MPa, the linen fiber fabric, bamboo fiber fabric, and a weight of 100 g / m 2 The cotton fiber fabric is laminated, then soaked in acetone for 12 hours, taken out, and dried at -18°C for 24 hours to obtain a wrinkle-resistant and skin-friendly fabric.

[0027] Example 2; (1) epoxy resin E44 and N,N-dimethylformamide were mixed in a mass ratio of 1:11, stirred at 100 rpm for 22 min, heated to 50° C., mercaptobutyric acid was added, and stirred at 70 rpm for 15 min to obtain a polymer gel precursor solution; the epoxy resin E44 and mercaptobutyric acid were in a molar ratio of 100:115;

[0028] (2) isocyanate ethyl acrylate, (2Z, 4E)-2,4-hexadienoic acid, and a foaming agent are mixed in a mass ratio of 15:45:7 to obtain a foaming liquid; the foaming liquid, polymer gel precursor solution, tert-butyl benzoyl peroxide, deionized water, and tetramethylammonium hydroxide are mixed in a mass ratio of 0.35:1:0.003:1:0.003, stirred at 100 rpm for 35 min, poured into a stirring device, stirred at 50° C. and 400 rpm for 16 h, stopped stirring, sealed and placed for 20 h, taken out, cut into long strips, and obtained a wet gel foam; the foaming agent is azodicarbonamide and zinc oxide in a mass ratio of 8:1.2;

[0029] (3) At a weight of 120 g / m 2 One side of the linen fabric has a gram weight of 100g / m 2 Wet gel foam is pasted on both sides of the bamboo fiber fabric, with a spacing of 2 cm. Under a pressure of 6 MPa, the linen fiber fabric, bamboo fiber fabric, and a weight of 100 g / m 2 The cotton fiber fabric is laminated, then soaked in acetone for 12 hours, taken out, and dried at -18°C for 24 hours to obtain a wrinkle-resistant and skin-friendly fabric.

[0030] Example 3; (1) epoxy resin and N,N-dimethylformamide were mixed in a mass ratio of 1:15, stirred at 100 rpm for 30 min, heated to 60°C, mercaptobutyric acid was added, and stirred at 70 rpm for 20 min to obtain a polymer gel precursor solution; the epoxy resin was epoxy resin E51 and epoxy resin E44 mixed in a mass ratio of 1:1; the epoxy resin and mercaptobutyric acid were in a molar ratio of 100:120;

[0031] (2) isocyanate ethyl acrylate, (2Z, 4E)-2,4-hexadienoic acid, and a foaming agent are mixed in a mass ratio of 20:55:10 to obtain a foaming liquid; the foaming liquid, polymer gel precursor solution, organic peroxide, deionized water, and tetramethylammonium hydroxide are mixed in a mass ratio of 0.5:1:0.005:1:0.005, stirred at 100 rpm for 40 min, poured into a stirring device, stirred at 60° C. and 500 rpm for 20 h, stopped stirring, sealed and placed for 22 h, taken out, cut into long strips, and obtained a wet gel foam; the organic peroxide is benzoyl peroxide, tert-butyl benzoyl peroxide or methyl ethyl ketone peroxide; the foaming agent is azodicarbonamide and zinc oxide in a mass ratio of 10:1.5

[0032] (3) At a weight of 120 g / m 2 One side of the linen fabric has a gram weight of 100g / m 2 Wet gel foam is pasted on both sides of the bamboo fiber fabric, with a spacing of 3cm. Under a pressure of 8MPa, the linen fiber fabric, bamboo fiber fabric, and a weight of 100g / m 2 The cotton fiber fabric is laminated, then soaked in acetone for 12 hours, taken out, and dried at -18°C for 24 hours to obtain a wrinkle-resistant and skin-friendly fabric.

[0033] Comparative Example 1; (1) epoxy resin E44 and N,N-dimethylformamide were mixed in a mass ratio of 1:11, stirred at 100 rpm for 22 min, heated to 50° C., mercaptobutyric acid was added, and stirred at 70 rpm for 15 min to obtain a polymer gel precursor solution; the epoxy resin E44 and mercaptobutyric acid were in a molar ratio of 100:115;

[0034] (2) The polymer gel precursor solution, tert-butyl benzoyl peroxide, deionized water, and tetramethylammonium hydroxide were mixed in a mass ratio of 1:0.003:1:0.003, stirred at 100 rpm for 35 min, sealed and placed for 36 h, taken out, and cut into long strips to obtain a wet gel;

[0035] (3) At a weight of 120 g / m 2 One side of the linen fabric has a gram weight of 100g / m 2 Wet gel is pasted on both sides of the bamboo fiber fabric, with a spacing of 2 cm. Under a pressure of 6 MPa, the linen fiber fabric, bamboo fiber fabric, and a weight of 100 g / m2 The cotton fiber fabric is laminated, then soaked in acetone for 12 hours, taken out, and dried at -18°C for 24 hours to obtain a wrinkle-resistant and skin-friendly fabric.

[0036] Comparative Example 2

[0037] The weight is 120g / m 2 Linen fiber fabric, weight 100g / m 2 Bamboo fiber fabric, weight 100g / m 2 Cotton fabric is bonded with polyurethane adhesive, with a coating amount of 15g / m 2 , to obtain a multi-layer fabric; mix ethyl isocyanate acrylate, (2Z, 4E)-2,4-hexadienoic acid, and a foaming agent in a mass ratio of 15:45:7 to obtain a foaming liquid, pour the foaming liquid into a stirring device, stir at 50°C and 400rpm for 16 hours, immerse the multi-layer fabric therein for 2 hours, take out, and dry to obtain a wrinkle-resistant skin-friendly fabric.

[0038] The fabrics used in the present invention are, from top to bottom, flax fiber fabric-anti-wrinkle strip-bamboo fiber fabric-anti-wrinkle strip-cotton fiber fabric; wherein the anti-wrinkle strip is an aerogel foam with shape memory function, and mercaptobutyric acid and epoxy resin are used as raw materials, and a polymer gel precursor solution with multiple crosslinking points is formed through a click reaction, and then a solution consisting of isocyanate ethyl acrylate, (2Z, 4E)-2,4-hexadienoic acid and a foaming agent is added to the precursor solution, and heated to obtain a wet gel foam, and the isocyanate group and the double bond participate in the secondary crosslinking of the polymer, so that the wet gel foam forms a double crosslinking network, improves the strength of the anti-wrinkle strip, and further improves the strength of the fabric, because the foam contains carboxyl groups and has good viscosity, so that the finally formed anti-wrinkle strip can bond various fabrics, and then the long strips of wet gel foam are applied at intervals on the surface of the fabric, slowly infiltrating the fabric, wrapping various fibers, so that the fibers between the fabrics are crosslinked, coordinating the shape memory of the aerogel foam, and improving the wrinkle resistance of the fabric, and then freezing and solidifying to form the anti-wrinkle strip of the aerogel structure, further improving the wrinkle resistance of the fabric.

[0039] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations within the meaning and scope of the equivalent elements of the claims be included in the invention. Any marking in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A wrinkle-resistant skin-friendly fabric, characterized in that: The anti-wrinkle and skin-friendly fabrics are, from top to bottom, linen fiber fabric-anti-wrinkle strip-bamboo fiber fabric-anti-wrinkle strip-cotton fiber fabric; The anti-wrinkle skin-friendly fabric is prepared by the following method: (1) Mix epoxy resin and N,N-dimethylformamide, stir at 100 rpm for 15-30 min, heat to 40-60 °C, add mercaptobutyric acid, and stir at 70 rpm for 10-20 min to obtain a polymer gel precursor solution; (2) Mix the foaming liquid, polymer gel precursor solution, organic peroxide, deionized water, and tetramethylammonium hydroxide, stir at 100 rpm for 30-40 min, pour into a stirring device, stir at 40-60° C. and 300-500 rpm for 12-20 h, stop stirring, seal and place for 18-22 h, take out, cut into long strips, and obtain a wet gel foam; (3) Paste the wet gel foam on one side of the linen fiber fabric and on both sides of the bamboo fiber fabric, and laminate the linen fiber fabric, bamboo fiber fabric, and cotton fiber fabric under a pressure of 4-8 MPa, then soak them in acetone for 12 hours, take them out, and dry them at -18°C for 24 hours to obtain the wrinkle-resistant and skin-friendly fabric.

2. The wrinkle-proof skin-friendly fabric according to claim 1, characterized in that: The epoxy resin in step (1) is epoxy resin E51 or epoxy resin E44.

3. The wrinkle-proof skin-friendly fabric according to claim 1, characterized in that: The epoxy resin and mercaptobutyric acid in step (1) are in a molar ratio of 100:100-120.

4. The wrinkle-proof skin-friendly fabric according to claim 1, characterized in that: The mass ratio of the epoxy resin to N,N-dimethylformamide in step (1) is 1:8-15.

5. The wrinkle-resistant skin-friendly fabric according to claim 1, characterized in that: The organic peroxide in step (2) is benzoyl peroxide, tert-butyl benzoyl peroxide or methyl ethyl ketone peroxide.

6. The wrinkle-resistant skin-friendly fabric according to claim 1, characterized in that: The mass ratio of ethyl isocyanate acrylate, (2Z,4E)-2,4-hexadienoic acid and foaming agent in the foaming liquid of step (2) is 10-20:35-55:4-10.

7. The wrinkle-resistant skin-friendly fabric according to claim 6, characterized in that: The foaming agent is azodicarbonamide and zinc oxide in a mass ratio of 6-10:1.0-1.

5.

8. The wrinkle-resistant skin-friendly fabric according to claim 1, characterized in that: The mass ratio of the foaming liquid, polymer gel precursor solution, organic peroxide, deionized water and tetramethylammonium hydroxide in step (2) is 0.2-0.5:1:0.001-0.005:1:0.001-0.

005.

9. The wrinkle-resistant skin-friendly fabric according to claim 1, characterized in that: The flax fiber fabric in step (3) has a gram weight of 120 g / m 2 , Bamboo fiber fabric weight is 100g / m 2 , cotton fiber fabric weight is 100g / m 2 .

10. The wrinkle-resistant skin-friendly fabric according to claim 1, characterized in that: In step (3), the wet gel foams are pasted at intervals of 1 to 3 cm.