阅读说明：本技术 一种羊毛织物持久防毡缩整理方法 (Lasting anti-felting finishing method for wool fabric ) 是由 胡剑安 于 2020-05-05 设计创作，主要内容包括：本发明涉及羊毛面料技术领域,公开了一种羊毛织物持久防毡缩整理方法。包括以下步骤：1)将羊毛织物置于等离子体处理仪中进行等离子体预处理,得到羊毛织物a；2)将羊毛织物a放入钛酸四丁酯溶液中,然后将混合液滴加至钛酸四丁酯溶液中,将羊毛织物置于烘箱中进行干燥处理,得到羊毛织物b；3)将蛋白酶加入水中搅拌均匀得到蛋白酶整理液,将羊毛织物b放入蛋白酶整理液中浸泡,然后将羊毛织物置于烘箱中进行干燥处理,得到羊毛织物c；4)将羊毛织物c先放入均苯三甲酰氯溶液中浸泡,然后放入聚乙烯亚胺溶液中进行反应,将羊毛织物置于烘箱中干燥,即得。本发明整理得到的羊毛织物具有优良的防毡缩性能和耐毡缩持久性。(The invention relates to the technical field of wool fabrics, and discloses a lasting anti-felting finishing method for a wool fabric. The method comprises the following steps: 1) placing the wool fabric in a plasma treatment instrument for plasma pretreatment to obtain a wool fabric a; 2) putting the wool fabric a into a tetrabutyl titanate solution, then dropwise adding the mixed solution into the tetrabutyl titanate solution, and putting the wool fabric into an oven for drying treatment to obtain a wool fabric b; 3) adding protease into water, uniformly stirring to obtain protease finishing liquid, soaking the wool fabric b into the protease finishing liquid, and then placing the wool fabric in an oven for drying treatment to obtain wool fabric c; 4) and (3) soaking the wool fabric c in a trimesoyl chloride solution, then putting the soaked wool fabric c into a polyethyleneimine solution for reaction, and drying the wool fabric in an oven to obtain the wool fabric. The wool fabric obtained by the finishing method has excellent anti-felting performance and felting-resistant durability.)

1. A wool fabric lasting anti-felting finishing method is characterized by comprising the following steps:

1) placing the wool fabric in a plasma treatment instrument for plasma pretreatment to obtain a wool fabric a; wherein the plasma treatment conditions are as follows: vacuum degree of 20-35Pa, discharge time of 1-3min and discharge power of 50-100W;

2) adding tetrabutyl titanate into absolute ethyl alcohol, and stirring to obtain tetrabutyl titanate solution for later use; uniformly mixing deionized water and absolute ethyl alcohol, and then dropwise adding acetic acid to adjust the pH value to 2-3 to obtain a mixed solution for later use; putting the wool fabric a into a tetrabutyl titanate solution, then dropwise adding the mixed solution into the tetrabutyl titanate solution, standing for 3-6h, and putting the wool fabric into an oven for drying treatment to obtain a wool fabric b;

3) adding protease into water, stirring uniformly to obtain protease finishing liquid, heating in water bath to 45-50 ℃, soaking the wool fabric b in the protease finishing liquid for 20-30min, and then placing the wool fabric in an oven for drying treatment to obtain wool fabric c;

4) and (3) soaking the wool fabric c in a trimesoyl chloride solution for 10-20min, then placing the wool fabric c in a polyethyleneimine solution for reacting for 5-10min, and drying the wool fabric in a drying oven at 55-70 ℃ for 1-2h to obtain the wool fabric.

2. A wool fabric durable anti-felting finishing method as claimed in claim 1, wherein the mass concentration of the tetrabutyl titanate solution in the step 2) is 1-5%.

3. The method for permanently felting-proof finishing of wool fabric according to claim 1, wherein the mass concentration of the protease finishing liquid in the step 3) is 0.2-0.35%.

4. The method for permanently finishing the wool fabric with the felt proofing function according to the claim 1, wherein the mass concentration of the trimesoyl chloride solution in the step 4) is 0.2-0.5%; the mass concentration of the polyethyleneimine solution is 1-3%.

5. A wool fabric lasting felt-proofing finishing method according to claim 1, wherein the wool fabric b in the step 2) is pretreated, comprising the following steps:

adding gamma-glycidoxypropyltrimethoxysilane into deionized water, adjusting the pH value to 3-5, stirring and hydrolyzing to obtain gamma-glycidoxypropyltrimethoxysilane hydrolysate, adding the wool fabric b into the gamma-glycidoxypropyltrimethoxysilane hydrolysate, heating to 40-50 ℃, carrying out heat preservation reaction for 2-3h, drying in the oven, putting the dried wool fabric into 3-aminobenzene alcohol solution, adding sodium hydroxide catalyst, heating to 85-90 ℃, carrying out heat preservation reaction for 4-8h, and drying in the oven.

6. The method for permanently finishing the wool fabric with the felt proofing function according to claim 5, wherein the mass ratio of the gamma-glycidoxypropyltrimethoxysilane to the deionized water is 1: 50-80.

7. A wool fabric lasting anti-felting finishing method according to claim 5, characterized in that the mass concentration of the 3-aminobenzene alcohol solution is 0.5-5%.

8. A wool fabric durable anti-felting finishing method according to claim 5, wherein the sodium hydroxide catalyst is added in an amount of 0.05-0.15wt% based on the 3-aminobenzoic alcohol solution.

Technical Field

The invention relates to the technical field of fabric fabrics, in particular to a lasting anti-felting finishing method for wool fabrics.

Background

Wool, as a widely used natural fiber, has incomparable advantages with other fibers, such as soft surface gloss, good elasticity, strong heat preservation performance, wear resistance, stain resistance, good moisture absorption performance and the like. Meanwhile, the source of wool is wide, the price of wool fabric is moderate, and the wool fabric is deeply loved by consumers. However, the felting property of the wool fabric makes the wool fabric easy to felt when washed by water, and the washed fabric shrinks and thickens and has rough hand feeling, which has great influence on the style and appearance of the wool fabric. After a piece of wool fabric without shrink-proof treatment is washed for a period of time, the shrinkage rate of the wool fabric reaches 30-50%, which is far from the area felt shrinkage rate not exceeding 10% set by the international wool agency, and the wool fabric does not shrink, dries quickly and is not easy to generate wrinkles and other wash-and-wear performances of synthetic fiber products in washing, so that the development of the wool fabric in the clothing industry is limited to a certain extent, and meanwhile, consumers are very inconvenient to use the wool fabric and can only wash the wool fabric in a dry cleaning shop, the economic burden and the daily burden in use are increased, the wool fabric can be directly washed by a household washing machine, the international standard can be reached, and shrink-proof finishing of the wool fabric is imperative. The wool fibers are provided with scale layers arranged from hair roots to hair tips, and the scale layers can increase the luster of the wool fabric, improve the pollution resistance and the abrasion resistance of the wool fabric and bring serious felting defects to the wool fabric.

Chinese patent publication No. CN105544198 discloses an antibacterial anti-felting finishing method for wool fabric, which comprises the steps of adding hydrogen peroxide and sodium hydroxide to pretreat the wool fabric in the first step, destroying scale cells and cortical cells on the surface of wool fibers, treating with biological enzyme in the second step, adding keratin and alkaline protein to perform synergistic reaction for enzymolysis, carrying out enzymolysis on keratin on the outer layer of the scale by keratinase, carrying out enzymolysis on collagen protein cystine of inner cuticle, cortex and the like of the wool by alkaline protease, carrying out chemical finishing in the third step, and carrying out two-dip two-prick finishing on the wool fabric by glycerol citrate solution. The hydrogen peroxide with a strong oxidation effect is used for oxidizing the wool fabric in the technical scheme of the patent, and although the scales on the surface of the fiber are damaged, the wool fiber is damaged at the same time, so that the mechanical strength of the wool fabric is reduced.

Chinese patent publication No. CN103031704 discloses an anti-felting washable finishing method for wool fabric, which comprises performing chlorination pretreatment on wool fabric under the action of ultrasonic waves, and performing enzyme treatment on wool fabric under the action of ultrasonic waves to realize controllable phosphorus stripping treatment. The mode that will combine wool fibre chlorination and enzyme treatment among this patent technical scheme handles the wool fibre, gets rid of the scale on wool surface because there is the clearance between the scale on wool fibre surface, and the protease gets into the fibre inside from the gap between the scale when using protease to wool fibre surface scale enzymolysis, causes the powerful damage of protease to wool fibre.

Chinese patent publication No. CN105506949 discloses a preparation method of a single-sided anti-felting wool fabric, which comprises the steps of wool fabric pretreatment, chitosan silica sol finishing liquid preparation, finishing, drying and the like. The chitosan silica sol finishing liquid is finished on the surface of one side of the wool fabric, condensation reaction is carried out among components in the finishing liquid, and a layer of rigid film is formed on the surface of the wool fabric in a crosslinking mode, so that the wool fabric has single-side anti-felting performance, but the chitosan layer on the surface of wool fibers is easy to fall off when the wool fabric is subjected to friction external force in the washing process of the wool fabric, and the anti-felting performance of the wool fabric is reduced.

Disclosure of Invention

The invention aims to overcome the technical problems and provides a method for finishing wool fabrics in a lasting anti-felting manner. The wool fabric obtained by the finishing method has excellent anti-felting performance and felting-resistant durability.

In order to achieve the purpose, the invention adopts the following technical scheme: a wool fabric lasting anti-felting finishing method comprises the following steps:

1) placing the wool fabric in a plasma treatment instrument for plasma pretreatment to obtain a wool fabric a; wherein the plasma treatment conditions are as follows: vacuum degree of 20-35Pa, discharge time of 1-3min and discharge power of 50-100W;

2) adding tetrabutyl titanate into absolute ethyl alcohol, and stirring to obtain tetrabutyl titanate solution for later use; uniformly mixing deionized water and absolute ethyl alcohol, and then dropwise adding acetic acid to adjust the pH value to 2-3 to obtain a mixed solution for later use; putting the wool fabric a into a tetrabutyl titanate solution, then dropwise adding the mixed solution into the tetrabutyl titanate solution, standing for 3-6h, and putting the wool fabric into an oven for drying treatment to obtain a wool fabric b;

3) adding protease into water, stirring uniformly to obtain protease finishing liquid, heating in water bath to 45-50 ℃, soaking the wool fabric b in the protease finishing liquid for 20-30min, and then placing the wool fabric in an oven for drying treatment to obtain wool fabric c; 4) and (3) soaking the wool fabric c in a trimesoyl chloride solution for 10-20min, then placing the wool fabric c in a polyethyleneimine solution for reacting for 5-10min, and drying the wool fabric in a drying oven at 55-70 ℃ for 1-2h to obtain the wool fabric.

The invention adopts a mode of combining plasma treatment and protease enzymolysis to destroy the scale structure on the surface of the wool fabric, so that the crosslinking degree of the scale layer on the surface of the wool fabric is reduced, thereby improving the anti-felting performance of the wool fabric, high-energy particles generated by plasma bombard the surface of the wool fiber, because the scale on the surface of the wool fiber has a protection effect on the internal structure of the fiber, the plasma has little influence on the mechanical strength of the wool fiber, but in the enzymolysis process of using protease to carry out enzymolysis on the scale on the surface of the wool fiber, because gaps exist between the scale on the surface of the wool fiber and the scale, protease can enter the fiber from the gaps between the scales and damage the internal structure of the fiber, so that the mechanical strength of the wool fiber is reduced, therefore, the invention utilizes the hydrolysis reaction of butyl titanate to deposit nano titanium dioxide particles on the surface of the wool fiber, and the, thereby playing a role in blocking the protease from entering the wool fibers and preventing the protease from entering the wool fibers to carry out enzymolysis on the internal organizational structures of the fibers. On the other hand, the surface of the wool fiber is subjected to a crosslinking reaction by utilizing trimesoyl chloride and polyethyleneimine, so that a polymer protective layer is formed on the surface of the wool fiber through crosslinking, the directional friction effect between the wool fibers is reduced, the shrinkage of the wool fibers is inhibited, and the anti-felting performance of the wool fibers is further improved.

Preferably, the mass concentration of the tetrabutyl titanate solution in the step 2) is 1-5%.

Preferably, the mass concentration of the protease finishing liquid in the step 3) is 0.2-0.35%.

Preferably, the mass concentration of the trimesoyl chloride solution in the step 4) is 0.2-0.5%; the mass concentration of the polyethyleneimine solution is 1-3%.

Preferably, the wool fabric b is pretreated in the step 2), and the method comprises the following steps:

adding gamma-glycidoxypropyltrimethoxysilane into deionized water, adjusting the pH value to 3-5, stirring and hydrolyzing to obtain gamma-glycidoxypropyltrimethoxysilane hydrolysate, adding the wool fabric b into the gamma-glycidoxypropyltrimethoxysilane hydrolysate, heating to 40-50 ℃, carrying out heat preservation reaction for 2-3h, drying in the oven, putting the dried wool fabric into 3-aminobenzene alcohol solution, adding a sodium hydroxide catalyst, heating to 85-90 ℃, carrying out heat preservation reaction for 4-8h, and drying in the oven to obtain the wool fabric.

The method comprises the steps of polymerizing trimesoyl chloride and polyethyleneimine on the surface of wool fibers to generate a high-molecular polymer protective layer, reducing the directional friction effect between the wool fibers, so as to inhibit the shrinkage of the wool fibers, wherein the high-molecular polymer protective layer on the surface of the wool fibers is easy to fall off from the surface of the wool fibers in the process of water washing or long-term use of the wool fabrics, so that the wool fabrics b are pretreated, the nano titanium dioxide combined on the surface of the wool fabrics b reacts with gamma-glycidyl ether oxypropyltrimethoxysilane, the gamma-glycidyl ether oxypropyltrimethoxysilane is grafted on the surface of the nano titanium dioxide, and then the epoxy groups on the gamma-glycidyl ether oxypropyltrimethoxysilane molecules react with the hydroxyl groups on the 3-aminobenzol molecules, so that the 3-aminobenzol is bonded to the surface of the nano titanium dioxide, the surface of the nano titanium dioxide is loaded with amino groups, and the amino groups on the surface of the nano titanium dioxide participate in the crosslinking reaction of trimesoyl chloride and polyethyleneimine, so that a high-molecular polymer protective layer generated by crosslinking of the trimesoyl chloride and the polyethyleneimine is connected to the surface of wool fibers through chemical bonds, the binding force between the polymer protective layer and the wool fibers is improved, and the water washing resistance and the felt shrinkage resistance durability of the wool fabric are further improved.

Preferably, the mass ratio of the gamma-glycidoxypropyltrimethoxysilane to the deionized water is 1: 50-80.

Preferably, the mass concentration of the 3-aminobenzene alcohol solution is 0.5-5%.

Preferably, the sodium hydroxide catalyst is added in an amount of 0.05 to 0.15wt% based on the 3-aminobenzene alcohol solution.

Therefore, the invention has the following beneficial effects: (1) the scale structure on the surface of the wool fabric is damaged by adopting a mode of combining plasma treatment and protease enzymolysis, so that the crosslinking degree of the scale layer on the surface of the wool fabric is reduced, and the anti-felting performance of the wool fabric is improved; (2) the surface of the wool fiber is subjected to a crosslinking reaction by utilizing trimesoyl chloride and polyethyleneimine, so that a polymer protective layer is formed on the surface of the wool fiber through crosslinking, the directional friction effect among the wool fibers is reduced, the shrinkage of the wool fibers is inhibited, and the anti-felting performance of the wool fibers is further improved; (3) the nanometer titanium dioxide particles are deposited on the surface of the wool fiber by utilizing the hydrolysis reaction of the butyl titanate, and the nanometer titanium dioxide particles can fill gaps among scales of the wool fiber, so that the effect of blocking protease from entering the interior of the wool fiber is achieved, and the protease is prevented from entering the interior of the wool fiber to carry out enzymolysis on the internal organizational structure of the fiber; (4) the high molecular polymer protective layer generated by crosslinking trimesoyl chloride and polyethyleneimine is connected to the surface of the wool fiber through chemical bonds, so that the binding force between the polymer protective layer and the wool fiber is improved, and further, the water washing resistance and the felt-shrinkage resistance durability of the wool fabric are improved.

Drawings

FIG. 1 is a microscopic scanning electron microscope image of the wool fabric fiber of example 1 of the present invention.

Detailed Description

The technical solution of the present invention is further illustrated by the following specific examples. In the present invention, unless otherwise specified, all the raw materials and equipment used are commercially available or commonly used in the art, and the methods in the examples are conventional in the art unless otherwise specified.