CN111501355A - Lasting anti-felting finishing method for wool fabric - Google Patents
Lasting anti-felting finishing method for wool fabric Download PDFInfo
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- CN111501355A CN111501355A CN202010370563.5A CN202010370563A CN111501355A CN 111501355 A CN111501355 A CN 111501355A CN 202010370563 A CN202010370563 A CN 202010370563A CN 111501355 A CN111501355 A CN 111501355A
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- YDQUROLTIDVHRK-UHFFFAOYSA-N 2-hydroxypropane-1,2,3-tricarboxylic acid;propane-1,2,3-triol Chemical compound OCC(O)CO.OC(=O)CC(O)(C(O)=O)CC(O)=O YDQUROLTIDVHRK-UHFFFAOYSA-N 0.000 description 1
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- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
- D06M16/003—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic with enzymes or microorganisms
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- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/02—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements ultrasonic or sonic; Corona discharge
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- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/04—Physical treatment combined with treatment with chemical compounds or elements
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- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/04—Physical treatment combined with treatment with chemical compounds or elements
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- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
- D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
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Abstract
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.
Description
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.
The wool fabric used in the specific embodiment has a fabric weave structure of plain weave, a warp density of 66 pieces/10 cm, a weft density of 62 pieces/10 cm, a sample size of 10cm × 10cm, Qinghai De Rui textile import and export Limited, and polyethyleneimine, wherein the viscosity is 8000-10000mpa.s, the molecular weight is 10000-.
Example 1
The lasting felt-proofing finishing method for the wool fabric 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: the vacuum degree is 35Pa, the discharge time is 3min, and the discharge power is 50W;
2) adding tetrabutyl titanate into absolute ethyl alcohol, and stirring to prepare a tetrabutyl titanate solution with the concentration of 4% for later use; uniformly mixing deionized water and absolute ethyl alcohol according to the volume ratio of 1:3, and then dropwise adding acetic acid to adjust the pH value to 3 to obtain a mixed solution for later use; putting the wool fabric a into a tetrabutyl titanate solution according to a bath ratio of 1:30, then dropwise adding the mixed solution into the tetrabutyl titanate solution according to a volume ratio of the mixed solution to the tetrabutyl titanate solution of 1:2, standing for 5 hours, and putting the wool fabric into an oven to perform drying treatment for 2 hours at 50 ℃ to obtain a wool fabric b;
the wool fabric b is pretreated, and comprises the following steps:
adding gamma-glycidoxypropyltrimethoxysilane into deionized water according to the mass ratio of 1:80 of gamma-glycidoxypropyltrimethoxysilane to the deionized water, dropwise adding acetic acid to adjust the PH to 3, stirring and hydrolyzing to obtain gamma-glycidoxypropyltrimethoxysilane hydrolysate, adding wool fabric b into the gamma-glycidoxypropyltrimethoxysilane hydrolysate according to the bath ratio of 1:20, heating to 50 ℃, carrying out heat preservation reaction for 2 hours, and drying at 50 ℃ for 3 hours in a drying process; adding 3-aminobenzyl alcohol into deionized water, stirring and dissolving to obtain a 3-aminobenzyl alcohol solution with the mass concentration of 4%, putting the dried wool fabric into the 3-aminobenzyl alcohol solution, adding a sodium hydroxide catalyst, wherein the addition amount of sodium hydroxide is 0.05 wt% of the 3-aminobenzyl alcohol solution, heating to 90 ℃, keeping the temperature, reacting for 7 hours, and drying in an oven at 60 ℃ for 2 hours;
3) adding the Novoxil into water, uniformly stirring to obtain a protease finishing liquid with the mass concentration of 0.35%, heating in a water bath to 46 ℃, putting the pretreated wool fabric b into the protease finishing liquid, soaking for 30min, and then putting the wool fabric in an oven, and drying for 3h at 50 ℃ to obtain a wool fabric c;
4) adding trimesoyl chloride into a normal hexane solvent, stirring and dissolving to obtain a trimesoyl chloride solution with the mass concentration of 0.4%, adding polyethyleneimine into deionized water, stirring and dissolving to obtain a polyethyleneimine solution with the mass concentration of 2%, soaking a wool fabric c into the trimesoyl chloride solution for 15min, then placing the wool fabric c into the polyethyleneimine solution for reaction for 8min, and placing the wool fabric in an oven for drying at 70 ℃ for 1h to obtain the wool fabric.
Example 2
The lasting felt-proofing finishing method for the wool fabric 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 20Pa, discharge time of 1min and discharge power of 100W;
2) adding tetrabutyl titanate into absolute ethyl alcohol, and stirring to prepare a tetrabutyl titanate solution with the concentration of 2% for later use; uniformly mixing deionized water and absolute ethyl alcohol according to the volume ratio of 1:3, and then dropwise adding acetic acid to adjust the pH value to 2 to obtain a mixed solution for later use; putting the wool fabric a into a tetrabutyl titanate solution according to a bath ratio of 1:30, then dropwise adding the mixed solution into the tetrabutyl titanate solution according to a volume ratio of the mixed solution to the tetrabutyl titanate solution of 1:2, standing for 4 hours, and putting the wool fabric into an oven to perform drying treatment for 2 hours at 50 ℃ to obtain a wool fabric b;
the wool fabric b is pretreated, and comprises the following steps:
adding gamma-glycidoxypropyltrimethoxysilane into deionized water according to the mass ratio of 1:50 of gamma-glycidoxypropyltrimethoxysilane to the deionized water, dropwise adding acetic acid to adjust the pH value to 5, stirring and hydrolyzing to obtain gamma-glycidoxypropyltrimethoxysilane hydrolysate, adding wool fabric b into the gamma-glycidoxypropyltrimethoxysilane hydrolysate according to the bath ratio of 1:20, heating to 40 ℃, carrying out heat preservation reaction for 3 hours, and drying at 50 ℃ for 3 hours in a drying process; adding 3-aminobenzyl alcohol into deionized water, stirring and dissolving to obtain a 3-aminobenzyl alcohol solution with the mass concentration of 1.0%, putting the dried wool fabric into the 3-aminobenzyl alcohol solution, adding a sodium hydroxide catalyst, wherein the addition amount of sodium hydroxide is 0.15wt% of the 3-aminobenzyl alcohol solution, heating to 85 ℃, keeping the temperature for reaction for 5 hours, and placing the wool fabric in an oven for drying treatment for 2 hours at the temperature of 60 ℃;
3) adding the Novoxil into water, uniformly stirring to obtain a protease finishing liquid with the mass concentration of 0.2%, heating in a water bath to 46 ℃, putting the pretreated wool fabric b into the protease finishing liquid, soaking for 20min, and then putting the wool fabric in an oven, and drying for 3h at 50 ℃ to obtain a wool fabric c;
4) adding trimesoyl chloride into a normal hexane solvent, stirring and dissolving to obtain a trimesoyl chloride solution with the mass concentration of 0.3%, adding polyethyleneimine into deionized water, stirring and dissolving to obtain a polyethyleneimine solution with the mass concentration of 1.5%, soaking a wool fabric c into the trimesoyl chloride solution for 12min, then placing the wool fabric c into the polyethyleneimine solution for reaction for 6min, and placing the wool fabric in an oven for drying at 55 ℃ for 2h to obtain the wool fabric.
Example 3
The lasting felt-proofing finishing method for the wool fabric 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: the vacuum degree is 30Pa, the discharge time is 2min, and the discharge power is 80W;
2) adding tetrabutyl titanate into absolute ethyl alcohol, and stirring to prepare a tetrabutyl titanate solution with the concentration of 5% for later use; uniformly mixing deionized water and absolute ethyl alcohol according to the volume ratio of 1:3, and then dropwise adding acetic acid to adjust the pH value to 2.5 to obtain a mixed solution for later use; putting the wool fabric a into a tetrabutyl titanate solution according to a bath ratio of 1:30, then dropwise adding the mixed solution into the tetrabutyl titanate solution according to a volume ratio of the mixed solution to the tetrabutyl titanate solution of 1:2, standing for 6 hours, and putting the wool fabric into an oven to perform drying treatment for 2 hours at 50 ℃ to obtain a wool fabric b;
the wool fabric b is pretreated, and comprises the following steps:
adding gamma-glycidoxypropyltrimethoxysilane into deionized water according to the mass ratio of 1:60 of gamma-glycidoxypropyltrimethoxysilane to the deionized water, dropwise adding acetic acid to adjust the PH to 4, stirring and hydrolyzing to obtain gamma-glycidoxypropyltrimethoxysilane hydrolysate, adding wool fabric b into the gamma-glycidoxypropyltrimethoxysilane hydrolysate according to the bath ratio of 1:20, heating to 45 ℃, carrying out heat preservation reaction for 2.5 hours, drying for 3 hours at 50 ℃; adding 3-aminobenzyl alcohol into deionized water, stirring and dissolving to obtain a 3-aminobenzyl alcohol solution with the mass concentration of 5%, putting the dried wool fabric into the 3-aminobenzyl alcohol solution, adding a sodium hydroxide catalyst, wherein the addition amount of sodium hydroxide is 0.1 wt% of the 3-aminobenzyl alcohol solution, heating to 88 ℃, keeping the temperature, reacting for 8 hours, and drying in an oven at 60 ℃ for 2 hours;
3) adding the Novoxil into water, uniformly stirring to obtain a protease finishing liquid with the mass concentration of 0.3%, heating in a water bath to 50 ℃, putting the pretreated wool fabric b into the protease finishing liquid, soaking for 25min, and then putting the wool fabric in an oven, and drying for 3h at 50 ℃ to obtain a wool fabric c;
4) adding trimesoyl chloride into a normal hexane solvent, stirring and dissolving to obtain a trimesoyl chloride solution with the mass concentration of 0.5%, adding polyethyleneimine into deionized water, stirring and dissolving to obtain a polyethyleneimine solution with the mass concentration of 3%, soaking a wool fabric c into the trimesoyl chloride solution for 20min, then placing the wool fabric c into the polyethyleneimine solution for reaction for 10min, and placing the wool fabric in an oven for drying at 60 ℃ for 1.5h to obtain the wool fabric.
Example 4
The lasting felt-proofing finishing method for the wool fabric 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: the vacuum degree is 30Pa, the discharge time is 2min, and the discharge power is 80W;
2) adding tetrabutyl titanate into absolute ethyl alcohol, and stirring to prepare a tetrabutyl titanate solution with the concentration of 1% for later use; uniformly mixing deionized water and absolute ethyl alcohol according to the volume ratio of 1:3, and then dropwise adding acetic acid to adjust the pH value to 2.5 to obtain a mixed solution for later use; putting the wool fabric a into a tetrabutyl titanate solution according to a bath ratio of 1:30, then dropwise adding the mixed solution into the tetrabutyl titanate solution according to a volume ratio of the mixed solution to the tetrabutyl titanate solution of 1:2, standing for 3h, and drying the wool fabric in an oven at 50 ℃ for 2h to obtain a wool fabric b;
the wool fabric b is pretreated, and comprises the following steps:
adding gamma-glycidoxypropyltrimethoxysilane into deionized water according to the mass ratio of 1:60 of gamma-glycidoxypropyltrimethoxysilane to the deionized water, dropwise adding acetic acid to adjust the PH to 4, stirring and hydrolyzing to obtain gamma-glycidoxypropyltrimethoxysilane hydrolysate, adding wool fabric b into the gamma-glycidoxypropyltrimethoxysilane hydrolysate according to the bath ratio of 1:20, heating to 45 ℃, carrying out heat preservation reaction for 2.5 hours, drying for 3 hours at 50 ℃; adding 3-aminobenzyl alcohol into deionized water, stirring and dissolving to obtain a 3-aminobenzyl alcohol solution with the mass concentration of 0.5%, putting the dried wool fabric into the 3-aminobenzyl alcohol solution, adding a sodium hydroxide catalyst, wherein the addition amount of sodium hydroxide is 0.1 wt% of the 3-aminobenzyl alcohol solution, heating to 88 ℃, keeping the temperature for reaction for 4 hours, and placing the wool fabric in an oven for drying treatment for 2 hours at the temperature of 60 ℃;
3) adding the Novoxil into water, uniformly stirring to obtain a protease finishing liquid with the mass concentration of 0.3%, heating in a water bath to 45 ℃, putting the pretreated wool fabric b into the protease finishing liquid, soaking for 25min, and then putting the wool fabric in an oven, and drying for 3h at 50 ℃ to obtain a wool fabric c;
4) adding trimesoyl chloride into a normal hexane solvent, stirring and dissolving to obtain a trimesoyl chloride solution with the mass concentration of 0.2%, adding polyethyleneimine into deionized water, stirring and dissolving to obtain a polyethyleneimine solution with the mass concentration of 1%, soaking a wool fabric c into the trimesoyl chloride solution for 10min, then placing the wool fabric c into the polyethyleneimine solution for reaction for 5min, and placing the wool fabric in an oven for drying at 60 ℃ for 1.5h to obtain the wool fabric.
Comparative example 1: comparative example 1 differs from example 1 in that the wool fabric was not finished with tetrabutyl titanate in step 2).
Comparative example 2: comparative example 2 differs from example 1 in that the wool fabric has not been subjected to step 4) finishing.
Comparative example 3: comparative example 3 differs from example 1 in that the fleece fabric b has not been pretreated.
Testing the performance of the wool fabric:
1. felting rate test
Marking a square with the size of 10cm × 10cm on a sample, after the sample is processed and washed by different processes, measuring the size of a marked area of each sample and calculating the area of the marked area, expressing the felt shrinkage rate of the sample by the area change percentage of the marked area before and after the processing, washing by referring to GB/T8629-2001 family washing and drying program standard for textile test, wherein the washing powder is 3.0-3.5 g/L, the neutral soap piece is 0.5-1.0 g/L, the bath ratio is 1:45, the temperature is 40 ℃, the washing time is 3h, the dehydration and drying are carried out, the balance is 24h, and the felt shrinkage rate is calculated according to the following formula:
felt shrinkage (1-area after treatment/area before treatment) × 100%.
2. Determination of tensile breaking strength of wool fabric:
the change of tensile breaking strength before and after fabric finishing is measured according to standard ASTM D5035-:
tenacity loss (fabric tenacity before treatment-fabric tenacity after treatment)/fabric tenacity before treatment × 100%.
3. The softness degree of the wool fabric is measured by adopting a fabric style tester, the softness degree is divided into I-V grade, and the softness degree of the I grade is optimal.
4. And (3) detecting the yellowing index of the wool fabric by using a fabric color measuring and matching instrument, wherein the greater the yellowing index is, the more serious the yellowing of the fabric is proved.
The felting rate of the wool fabrics obtained in examples 1 to 4 is lower than that of comparative example 2, which can be obtained from the test results, and it is proved that the crosslinking reaction is performed between trimesoyl chloride and polyethyleneimine on the surface of wool fibers, so as to form a polymer protective layer through crosslinking on the surface of the wool fibers, and fig. 1 shows that a smooth polymer layer is covered on the surface of the wool fibers, so that the scales on the surface of the wool fibers are covered, and the polymer protective layer reduces the directional friction between the wool fibers, inhibits the shrinkage of the wool fibers, and thus improves the felting prevention performance of the wool fibers. It can be seen from the comparison of the strength loss of the examples with that of the comparative example 2, the strength loss of the wool fiber of the comparative example 2 is higher than that of the examples 1 to 4, and it is proved that the high molecular polymer layer formed by the crosslinking reaction of trimesoyl chloride and polyethyleneimine on the surface of the wool fiber has a reinforcing effect on the wool fabric.
The strength loss of the wool fabrics in examples 1 to 4 is far lower than that of comparative example 1, and the results prove that in the examples, nano titanium dioxide particles are deposited on the surfaces of wool fibers by using a tetrabutyl titanate hydrolysis reaction, and the nano titanium dioxide particles can fill gaps among scales of the wool fibers, so that the nano titanium dioxide particles can block protease from entering the wool fibers, and the protease is prevented from entering the wool fibers to carry out enzymolysis on internal organizational structures of the fibers, so that the breaking strength of the wool fabrics is maintained, and the strength loss of the wool fabrics is reduced.
5. Testing the felt-shrink resistance durability of the wool fabric:
washing wool fabric fibers for 30 times, wherein the washing method comprises the steps of washing powder 3.0-3.5 g/L, neutral soap chips 0.5-1.0 g/L, a bath ratio of 1:45, a temperature of 40 ℃, a washing time of 3h, dewatering and drying, balancing for 24h, then testing the felting rate of the wool fabric, marking a square with the size of 10cm × 10cm on a sample, measuring the size of a marking area of each sample and calculating the area of the marking area after different processes are carried out on the sample and washed, and expressing the felting rate of the sample by the area change percentage of the marking area before and after the treatment, wherein the test calculation result is as follows:
example 1 | Example 2 | Example 3 | Example 4 | Comparative example 3 | |
Felt shrinkage (%) | 3.70 | 3.72 | 3.59 | 3.83 | 8.64 |
From the test results, it can be obtained that after the wool fabric is washed for 30 times, the felting rate of the wool fabric in examples 1-4 is not changed much compared with that before washing, and the felting rate of the wool fabric in comparative example 3 is significantly increased compared with that before washing, because in the examples, the wool fabric b is pretreated, the nano titanium dioxide combined on the surface of the wool fabric b reacts with the gamma-glycidoxypropyltrimethoxysilane, so that the gamma-glycidoxypropyltrimethoxysilane is grafted on the surface of the nano titanium dioxide, then the epoxy group on the gamma-glycidoxypropyltrimethoxysilane molecule reacts with the hydroxyl group on the 3-aminobenzol molecule, so that the 3-aminobenzol is bonded on the surface of the nano titanium dioxide, the nano titanium dioxide is loaded with amino group, the amino group on the surface of the nano titanium dioxide participates in the crosslinking reaction of trimesoyl chloride and polyethyleneimine, therefore, 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, the binding force between the polymer protective layer and the wool fiber is improved, and the water washing resistance and the felt-shrinkage resistance durability of the wool fabric are further improved.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications can be made without departing from the technical principle of the present invention, and these modifications should also be regarded as the protection scope of the present invention.
Claims (8)
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.
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN112127155A (en) * | 2020-09-27 | 2020-12-25 | 安徽荣业纺织有限公司 | Treatment process for improving fluffiness of cotton and linen fabric in wearing process |
CN112609456A (en) * | 2020-11-28 | 2021-04-06 | 无锡市丹怡纺织品有限公司 | Preparation method of felt-shrinkage-resistant woolen overcoat |
CN113584890A (en) * | 2021-06-18 | 2021-11-02 | 吴江市南麻恒兴丝织厂 | Preparation method of anti-wrinkle wool fabric |
CN115897002A (en) * | 2022-11-24 | 2023-04-04 | 桐乡市华家那羊绒服饰有限公司 | Chitosan/cashmere blended yarn roving production process |
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2020
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN112127155A (en) * | 2020-09-27 | 2020-12-25 | 安徽荣业纺织有限公司 | Treatment process for improving fluffiness of cotton and linen fabric in wearing process |
CN112609456A (en) * | 2020-11-28 | 2021-04-06 | 无锡市丹怡纺织品有限公司 | Preparation method of felt-shrinkage-resistant woolen overcoat |
CN113584890A (en) * | 2021-06-18 | 2021-11-02 | 吴江市南麻恒兴丝织厂 | Preparation method of anti-wrinkle wool fabric |
CN115897002A (en) * | 2022-11-24 | 2023-04-04 | 桐乡市华家那羊绒服饰有限公司 | Chitosan/cashmere blended yarn roving production process |
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