CN102154829B - Fuzzing, pilling and ultraviolet-prevention finishing agent and preparation method and application - Google Patents

Abstract

The invention relates to an anti-pilling anti-ultraviolet finishing agent as well as a preparation method and application thereof. The finishing agent is prepared by the following steps: (1) dissolving titanium alkoxide in an organic solvent, then adding the obtained solution into an acidic aqueous solution, and stirring evenly to obtain a mixture; (2) dissolving the silicon alkoxide Add it to the mixture obtained in step (1), stir evenly to obtain a transparent solution; or (1) dissolve the acid and silicon alkoxide in water in turn, and stir uniformly to obtain a mixture; (2) dissolve the titanium alkoxide in organic solvent, the resulting solution was added to the mixture obtained in step (1), and stirred evenly to obtain a transparent solution. The finishing agent of the invention has the characteristics of simple preparation and short finishing process, and meets the requirements of water saving, energy saving, low carbon and environmental protection.

Description

Anti-pilling anti-ultraviolet finishing agent and its preparation method and application

technical field

The invention belongs to the field of functional finishing of textiles, and relates to a finishing agent, in particular to an anti-pilling and anti-ultraviolet finishing agent, and a preparation method and application thereof.

Background technique

Functional finishing is an important means to improve the wearing performance of textiles and increase the added value of textiles. It mainly includes anti-ultraviolet, anti-pilling, anti-wrinkle, antibacterial, water-repellent, oil-repellent, anti-felting, flame-retardant, soft, etc. Since the mechanism of each functional finishing is different, different finishing auxiliaries are often required. With the rapid development of consumer demand, the requirements for the functionality of textiles are constantly increasing, especially the requirements for textiles with multiple functions.

Anti-pilling and anti-ultraviolet finishing are two kinds of finishing that are often used in pure cotton and polyester-cotton blended fabrics. Anti-ultraviolet finishing is mainly achieved through the absorption and reflection of ultraviolet rays, mainly using oxybenzone, hydroxyphenylbenzotriazole, hydroxyphenyltriazine, etc.; in addition, nano-titanium dioxide also has a certain ultraviolet shielding effect. The method of anti-pilling finishing is to reduce the slippage between fibers or increase the surface smoothness of cotton fabrics, and biological enzymes, polyacrylates, polyurethanes, organosilicon compounds, etc. are the main auxiliary agents.

When oxybenzone, hydroxyphenylbenzotriazole, hydroxyphenyltriazine and biological enzymes are used to treat textiles in the same bath, the activity of biological enzymes will be affected and the finishing effect will be weakened; while traditional UV-resistant finishing agents and polyacrylic acid When esters, polyurethanes, organic silicon compounds, sols and other additives are used in combination, the diffusibility of the anti-ultraviolet finishing agent will be reduced. Therefore, at present, if textiles need to achieve anti-pilling and anti-ultraviolet functions, one kind of finishing must be carried out first to realize one function, and then another finishing is carried out to realize the other function. The processing technology is complicated, water and energy are consumed, and the cost is increased. .

Therefore, it is one of the main development directions in the field of functional finishing to study the anti-pilling and anti-ultraviolet mechanism of textiles, develop new finishing agents, realize the one-bath method, reduce the environmental pollution of chemical additives, and reduce energy consumption.

Contents of the invention

Aiming at the deficiency of the existing processing technology, the invention provides an anti-pilling and anti-ultraviolet functional finishing agent for textiles which can be prepared by a one-bath method.

One of the objectives of the present invention is to provide the anti-pilling and anti-ultraviolet finishing agent. Described finishing agent is prepared by the method comprising the following steps:

(1) dissolving titanium alkoxide in an organic solvent, then adding the resulting solution into an acidic aqueous solution, stirring evenly to obtain a mixture;

(2) adding silicon alkoxide to the mixture obtained in step (1), stirring evenly to obtain a transparent solution, that is, the finishing agent;

Or be prepared by the method comprising the following steps:

(1) Dissolving acid and silicon alkoxide in water successively, stirring evenly to obtain a mixture;

(2) dissolving titanium alkoxide in an organic solvent, adding the resulting solution to the mixture obtained in step (1), stirring evenly to obtain a transparent solution, that is, the finishing agent;

Of the two preparation steps mentioned above, the first one is preferred.

More specifically,

The silicon alkoxide is selected from at least one of C4-C20 alkoxysilanes; preferably at least one of C4-C9 alkoxysilanes. More specific examples of compounds include: methyl orthosilicate, ethyl orthosilicate, γ-glycidyloxypropyltrimethyloxysilane, vinyltrimethyloxysilane, vinyltriethyloxysilane, γ-(methacryloyloxy)propyltrimethyloxysilane; among them, γ-glycidyloxypropyltrimethyloxysilane and vinyltrimethyloxysilane are preferred.

The titanium alkoxide is selected from at least one of C8-C20 alkoxy titanates; preferably at least one of C8-C16 alkoxy titanates. More specific examples of compounds include: tetrabutyl titanate, tetra-n-propyl titanate, tetraisopropyl titanate, tetraisobutyl titanate, tetraethyl titanate; among them, tetrabutyl titanate is preferred.

The acid is at least one selected from inorganic acids or water-soluble organic acids; preferably at least one selected from hydrochloric acid, nitric acid, and formic acid.

The organic solvent is an organic solvent that can form a chelate structure with titanium alkoxide and is soluble in water, and is selected from at least one of hydroxyl-containing organic ligand compounds; preferably at least one of acetic acid and acetylacetone. Wherein, the consumption of each component is as follows:

The molar ratio of the titanium alkoxide to water is 1: (1-200); preferably 1: (30-100);

The molar ratio of the titanium alkoxide to the organic solvent is 1: (0.5-100); preferably 1: (4-10);

The molar ratio of the titanium alkoxide to the acid is 1: (0.001-10); preferably 1: (0.01-0.1);

The molar ratio of titanium alkoxide to silicon alkoxide is 1: (0.01-100); preferably 1: (1-10).

The effect of the finishing agent of the present invention lies in the synergistic effect of each agent, and its dosage can be adjusted within a wide range without much influence on the effect.

The present invention uses titanium alkoxide and silicon alkoxide as raw materials, utilizes them to undergo hydrolysis and polycondensation reactions in water, and generates nano Particles, because the Ti-O bond has excellent anti-ultraviolet properties, and Si-O has both two-dimensional and three-dimensional valence bond structures, the combination of the two can also improve the anti-pilling property of the fabric. In addition, because the nanostructure has a large specific surface area, it can spontaneously and quickly absorb and aggregate on the surface of the fabric, so there is no need to add any adhesive to the finishing agent, which is safer and more environmentally friendly, and at the same time reduces the cost.

Two of the object of the present invention is to provide the preparation method of this kind of finishing agent, and this preparation method is a one-bath process, comprises the following steps:

(1) dissolving titanium alkoxide in an organic solvent, then adding the resulting solution into an acidic aqueous solution, stirring evenly to obtain a mixture;

(2) adding silicon alkoxide to the mixture obtained in step (1), stirring evenly to obtain a transparent solution, that is, the finishing agent;

Or described method comprises the following steps:

(1) Dissolving acid and silicon alkoxide in water successively, stirring evenly to obtain a mixture;

(2) Dissolving titanium alkoxide in an organic solvent, adding the obtained solution to the mixture obtained in step (1), and stirring evenly to obtain a transparent solution, that is, the finishing agent.

In the described operation, the adding and stirring methods of the materials are common processing methods.

The third object of the present invention is to provide the use of this finishing agent, which is used for finishing pure cotton fabrics or chemical fiber and cotton blended fabrics.

Wherein, the chemical fiber is selected from at least one of polyester fiber, polyamide fiber and polypropylene fiber. The textile in the step (2) is cotton or chemical fiber and cotton blended fabric, wherein chemical fiber includes polyester fiber, polyamide fiber, polypropylene fiber and the like.

When using the finishing agent of the present invention to finish textiles, the finishing agent of the present invention can be treated on the textiles by padding or dipping one bath method, the liquid-carrying rate is 40-100%, dried, and then baked at 100-130°C Bake for 0.5 to 3 minutes to complete the finishing process.

The present invention has the following advantages:

(1) The textile finishing agent was prepared by using titanium alkoxide and silicon alkoxide, and the padding or dipping one-bath method was used for finishing, and at the same time, the anti-pilling and anti-ultraviolet properties of textiles were improved.

(2) The effect of the finishing agent of the present invention lies in the synergistic effect of each reagent, and its dosage can be adjusted in a wide range without too much influence on the effect, so that the production conditions are simplified and the process is not harsh.

(3) The application of the finishing agent can realize the anti-pilling and anti-ultraviolet finishing of textiles through a one-bath method, which simplifies the processing technology, reduces the consumption of water and energy, reduces the processing cost, and improves the production efficiency.

Detailed ways

The present invention will be further described below in conjunction with specific embodiments. However, the present invention is not limited to the following examples.

Example 1

(1) Preparation of finishing agent

a. Dissolve 1 mol tetrabutyl titanate in 6 mol glacial acetic acid to form a glacial acetic acid solution of tetrabutyl titanate; dissolve 0.03 mol hydrochloric acid in 37.5 mol pure water, then add the tetrabutyl titanate The glacial acetic acid solution was stirred evenly to obtain a mixture;

b. Add 8mol of γ-glycidyl etheroxypropyltrimethoxysilane to the mixture obtained in step a, and stir evenly to obtain a transparent solution;

(2) Textile finishing

The pure cotton fabric (2/1 twill, 40×40/128×60, 140g/m ² ) was dipped twice and rolled twice in the above-mentioned finishing agent, with a liquid retention rate of 80% to 90%, dried at 80°C, and then Bake at 130°C for 3 minutes.

According to the same method, no finishing agent was used, and the fabric was directly padded with water to prepare a control sample.

(3) Performance test

According to "GBT 4802.2-2008 Determination of Pilling Properties of Textile Fabrics Part II: Martindale Method", use M235Martindale Abrasion Resistance and Pilling Tester (Silai Atlas (Shenzhen) Co., Ltd.) to test textile anti-corrosion Pilling performance;

According to "GB/T 18830-2009 Evaluation of UV-resistant Properties of Textiles", Lambda 750UV/VIS Spectrometer (Perkin Elmer Instruments (Shanghai) Co., Ltd.) was used to test the UV-resistant properties of textiles.

After the above finishing, the pilling performance and ultraviolet transmission performance of the cotton fabric are shown in Table 1. After finishing, the pilling performance of the sample is improved from grade 1 to grade 3-4, and the UPF value is increased from 25 to 146. It can be seen that The anti-pilling performance and anti-ultraviolet transmission performance of the fabric obtained by finishing with the finishing agent of the present invention are greatly improved.

Table 1 Example 1 Pure cotton fabric performance before and after finishing comparison

- Pilling performance (grade) Ultraviolet transmission performance (UPF value) control sample 1 25 finishing sample 3～4 50+

Example 2

(1) Preparation of finishing agent

a. Add 0.06mol formic acid and 1.2mol γ-glycidyl etheroxypropyltrimethoxysilane to 68mol water in turn, stir well to obtain a mixture;

b. Dissolve 1 mol of tetrabutyl titanate in 8 mol of acetylacetone to form a solution of tetrabutyl titanate, add the acetylacetone solution of tetrabutyl titanate to the mixture obtained in step a, stir evenly, and obtain a transparent solution;

(2) Textile finishing

Dip the 70/30 polyester-cotton blended knitted fabric (single weft flat weave, 18tex, longitudinal density 85 rows/5 cm, transverse density 68 longitudinal rows/5 cm, weight 175g/m ² ) in the above finishing agent twice Rolling, liquid rate 70% ~ 80%, after drying at 80 ℃, then bake at 130 ℃ for 3 minutes.

According to the same method, no finishing agent was used, and the fabric was directly padded with water to prepare a control sample.

(3) Performance test

According to "GB/T 4802.3-2008 Determination of Pilling Properties of Textile Fabrics Part 3: Pilling Box Method", use YG511A box-type pilling box (Zhejiang Ningbo Textile Instrument Factory) to test the anti-pilling performance of textiles;

According to "GB/T 18830-2009 Evaluation of UV-resistant Properties of Textiles", Lambda 750UV/VIS Spectrometer (Perkin Elmer Instruments (Shanghai) Co., Ltd.) was used to test the UV-resistant properties of textiles.

After the above finishing, the pilling performance and ultraviolet transmission performance of the polyester-cotton fabric are shown in Table 2. After finishing, the pilling performance of the sample is improved from grade 2 to grade 4-5, and the UPF value is increased from 36 to 152. It can be seen that the anti-pilling performance and anti-ultraviolet transmission performance of the fabric obtained by finishing with the finishing agent of the present invention are greatly improved.

Performance comparison of 70/30 polyester-cotton blended knitted fabric before and after finishing in Table 2 Example 2

- Pilling performance (level) Ultraviolet transmission performance (UPF value) control sample 2 36 finishing sample 4～5 50+

Claims (10)

1. an anti-pilling is prevented the ultraviolet finishing agent, it is characterized in that described finishing agent is made by the method that may further comprise the steps:

(1) the titanium alkoxide is dissolved in the organic solvent, the solution with gained adds in the acidic aqueous solution again, stirs, and obtains mixture;

(2) silicon alkoxide is joined in the mixture that step (1) obtains, stir, obtain clear solution, promptly described finishing agent;

Perhaps make by the method that may further comprise the steps:

(1) acid, silicon alkoxide is soluble in water successively, stir, obtain mixture;

(2) the titanium alkoxide is dissolved in the organic solvent, the solution of gained joins in the mixture that obtains in the step (1), stirs, and obtains clear solution, promptly described finishing agent;

Described silicon alkoxide is selected from least a in the alkoxy silane of C4 ~ C20;

Described titanium alkoxide is selected from least a in C8 ~ C20 alkoxytitanium acid esters.

2. finishing agent as claimed in claim 1 is characterized in that:

Described acid is selected from least a in inorganic acid or the water miscible organic acid;

Described organic solvent is selected from least a in the hydroxyl organic ligand compound.

3. finishing agent as claimed in claim 1 is characterized in that:

Described silicon alkoxide is selected from least a in methyl silicate, ethyl orthosilicate, γ-glycidyl ether oxygen propyl trimethyl oxosilane, vinyl trimethyl oxosilane, vinyl triethyl group oxosilane, γ-(methacryloxy) oxypropyl trimethyl oxosilane.

4. finishing agent as claimed in claim 1 is characterized in that:

Described titanium alkoxide is selected from least a in butyl titanate, metatitanic acid four n-propyls, tetraisopropyl titanate, metatitanic acid four isobutyl esters, the tetraethyl titanate.

5. finishing agent as claimed in claim 1 is characterized in that:

Described acid is selected from least a in hydrochloric acid, nitric acid, the formic acid.

6. finishing agent as claimed in claim 1 is characterized in that:

Described organic solvent is selected from least a in acetic acid, the acetylacetone,2,4-pentanedione.

7. like the described finishing agent of one of claim 1 ~ 6, it is characterized in that:

The mol ratio of described titanium alkoxide and water is 1: (1 ~ 200);

The mol ratio of described titanium alkoxide and organic solvent is 1: (0.5 ~ 100);

Described titanium alkoxide is 1 with the mol ratio of acid: (0.001 ~ 10);

The mol ratio of described titanium alkoxide and silicon alkoxide is 1: (0.01 ~ 100).

8. finishing agent as claimed in claim 7 is characterized in that:

The mol ratio of described titanium alkoxide and water is 1: (30 ~ 100);

The mol ratio of described titanium alkoxide and organic solvent is 1: (4 ~ 10);

Described titanium alkoxide is 1 with the mol ratio of acid: (0.01 ~ 0.1);

The mol ratio of described titanium alkoxide and silicon alkoxide is 1: (1 ~ 10).

9. preparation is characterized in that like the preparation method of the anti-ultraviolet finishing agent of the described anti-pilling of one of claim 1 ~ 8 described method may further comprise the steps:

(1) the titanium alkoxide is dissolved in the organic solvent, the solution with gained adds in the acidic aqueous solution again, stirs, and obtains mixture;

(2) silicon alkoxide is joined in the mixture that step (1) obtains, stir, obtain clear solution, promptly described finishing agent;

Perhaps described method may further comprise the steps:

(1) acid, silicon alkoxide is soluble in water successively, stir, obtain mixture;

(2) the titanium alkoxide is dissolved in the organic solvent, the solution of gained joins in the mixture that obtains in the step (1), stirs, and obtains clear solution, promptly described finishing agent.

10. like the purposes of the anti-ultraviolet finishing agent of the described anti-pilling of one of claim 1 ~ 8, it is characterized in that:

Said finishing agent is used for pure cotton fabric, or the anti-pilling of the BLENDED FABRIC of chemical fibre and cotton and the arrangement of anti-ultraviolet;

Described chemical fibre is selected from least a in polyester fiber, polyamide fiber, the polypropylene fibre.