CN1908290A - Nano-sized topical finish reagent for textile, preparation process thereof and textile finish method - Google Patents

Abstract

The invention relates to a textile nano-finishing agent capable of obtaining TiO ₂ /ZnO composite hydrosol, its preparation process and a fabric finishing method, using butyl titanate and zinc acetate as precursors, glacial acetic acid as catalyst and peptizer , water is the solvent, absolute ethanol is the solvent of butyl titanate, ethanolamine is the precipitant and provides OH ^- , and the TiO ₂ /ZnO nano-sol finishing agent formed through hydrolysis and polycondensation reaction has the following components and weight percentages: Butyl titanate accounts for 1-15%; zinc acetate dihydrate accounts for 1-12%; absolute ethanol accounts for 1%-20%; glacial acetic acid accounts for 5%-15%; ethanolamine accounts for 0.1%-5%; the balance of water , has the advantages of washability, non-toxic, non-irritating, low cost, simple and reliable manufacturing process, and can realize the anti-ultraviolet, anti-bacterial and anti-static functional finishing of fabrics.

Description

Textile nano-finishing agent and its preparation process and fabric finishing method

technical field

The invention belongs to the intercrossing technical fields of chemical technology, textile technology and physical technology, and relates to the selection of reagent materials and the production of reagents, in particular to a textile nano-finishing reagent capable of obtaining TiO ₂ /ZnO composite hydrosol and its preparation The technology and the finishing method of the fabric can realize the finishing of the fabric with anti-ultraviolet, antibacterial and antistatic functions.

Background technique

At present, the anti-ultraviolet, antibacterial and antistatic functions of fabrics are mainly made of organic substances, which have the following defects: (1) most organic substances are toxic and harmful to human body; (2) it is difficult to carry out functional compounding between organic substances. TiO ₂ /ZnO composite hydrosol was prepared by sol-gel technology as a finishing agent with anti-ultraviolet, antibacterial and antistatic functions. Related studies on fabric functional finishing using sol-gel technology are also being carried out, but there are the following disadvantages: hydrochloric acid is used, and the pH is low, which affects the mechanical properties of cotton fabrics.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies in the above-mentioned prior art and prepare a non-toxic, non-irritating, low-cost, good washability, simple manufacturing process, and has anti-ultraviolet, antibacterial, antistatic textile nanometer fabric. The finishing agent and its preparation process and fabric finishing method are prepared by sol technology using butyl titanate and zinc acetate as precursors.

The purpose of the present invention is achieved like this:

A textile nano-finishing reagent, with butyl titanate and zinc acetate as precursors, glacial acetic acid as a catalyst and peptizer, water as a solvent, absolute ethanol as a solvent for butyl titanate, ethanolamine as a precipitant and provides OH ^- , the TiO ₂ /ZnO nano-sol finishing agent formed through hydrolysis and polycondensation reaction, its components and weight percentages are as follows: butyl titanate accounts for 1-15%; zinc acetate dihydrate accounts for 1-12%; absolute ethanol 1% to 20%; glacial acetic acid 5% to 15%; ethanolamine 0.1% to 5%; water balance.

A preparation process of textile nano-finishing reagent, characterized in that: the preparation process is as follows:

1) Selection of reagent materials: butyl titanate and zinc acetate are selected as precursors, glacial acetic acid is selected as catalyst and peptizer, water is used as a solvent, absolute ethanol is used as a solvent for butyl titanate, ethanolamine is used as a precipitant and OH ^- is provided, Silver nitrate provides Ag ⁺ ,

2) Configuration of various preparatory solutions: Stir water, 1/3 absolute ethanol, and zinc acetate dihydrate to form A solution, stir butyl titanate, the rest of absolute ethanol, and 3/4 glacial acetic acid to form A solution B solution,

3) When solution A is stirred, the stirring speed is 1000 rpm to 2000 rpm, and ethanolamine is added dropwise to solution A to form a white precipitate, and then the remaining amount of glacial acetic acid is added for peptization to form C solution,

4) When solution C is stirred, slowly pour into solution B to form solution D, and then stir for 30 minutes to 3 hours to form antibacterial, anti-ultraviolet TiO ₂ /ZnO and Ag ⁺ nano-sol finishing agent, the stirring speed 1000 rpm to 2000 rpm.

The temperature of the hydrolysis and polycondensation reaction of the reagent is controlled at 0°C to 30°C, and the storage temperature of the prepared nano-sol finishing agent liquid is 0°C to 20°C.

During the preparation process, the stirring speed of the reagent is controlled at 1000 rpm to 2000 rpm.

During the preparation process, the speed of pouring solution B into solution A is slow, 1 drop/second to 100 drops/second.

Store solution D in the dark, in a brown bottle, and store in a dark room.

A method for finishing fabrics using the above-mentioned textile finishing reagent, the process is as follows: first dilute the functional finishing solution to a certain concentration (0.2-0.4mol/L), and then adopt the following process:

1) Padding, with liquid volume of 60% to 80%;

2) drying, the drying temperature is 80°C, and the drying time is 3 minutes;

3) Baking, the baking temperature is 130℃～210℃;

4) Soaping, the temperature is 95°C, the time is 2-5 minutes, and the amount of soaping agent is 0.1g/L;

5) Drying, the drying temperature is 80° C., and the drying time is 3 minutes.

In step 4, the components of the soaping agent are: Tx-10 10g, sodium hexadecylbenzene sulfonate 15g, EDTA 2g, dispersant 4g, anti-recontamination agent 2g, water balance.

The present invention has following positive effect:

The prepared anti-ultraviolet and antibacterial functional finishing agent has good stability, and it is still transparent and uniform after being placed for 3 months, and the amount of ethanol is less, and no strong acid such as hydrochloric acid is used in the preparation process, which has little effect on the mechanical properties of the fabric. The materials TiO ₂ and ZnO used are non-toxic materials, and the textiles treated with them meet the national environmental protection standards. The technology adopted in the invention is relatively simple, the investment is very small, the materials used are easy to purchase, and are suitable for large-scale production. The ultraviolet shielding rate of the finished fabric to the UVA segment can reach 88.77, and the ultraviolet shielding rate to the UVB segment reaches 99.43%, and its UPF value is 70.59. The antibacterial rate has reached 98%. The surface resistance of the finished polyester fabric drops from 10 ^{14 to 10 10} at a relative humidity of 40%, and from 10 ¹⁴ to 10 ⁹ at a relative humidity of 50%, and at a relative humidity of 55%. Under conditions, the surface resistance is 10 ⁸ . The warp and weft breaking strength of polyester fabric changed from 976.12N and 708.61N to 961.93N and 703.07N, and the breaking elongation in warp and weft changed from 36.30%, 24.1% to 34.27% and 26.12% respectively; The warp and weft breaking strength changed from 920.61N and 435.67N to 895.36N and 441.33N, and the elongation at break changed from 6.87% and 16.21% to 11.36% and 13.20% respectively. There is little performance impact. The whiteness CIE value of polyester fabric changed from 84.2 to 77.1, and the whiteness CIE value of cotton fabric changed from 66.5 to 67.5. The finishing agent had little effect on the whiteness of the fabric, and basically did not affect the subsequent dyeing performance of the fabric. After 30 times of washing, the anti-ultraviolet performance is good, the antibacterial rate is 93%, the surface resistance of the fabric is 10 ¹¹ , and the half-life is 7.28. The finished fabric has good durability in anti-ultraviolet, antibacterial and antistatic effects.

Detailed ways

Example 1: Using butyl titanate and zinc acetate as precursors, glacial acetic acid as catalyst and peptizer, water as solvent, absolute ethanol as solvent for butyl titanate, ethanolamine as precipitant and providing OH ^- , after hydrolysis , TiO ₂ /ZnO nano sol finishing agent formed by polycondensation reaction, its components and weight percentages are as follows: butyl titanate accounts for 1 gram; zinc acetate dihydrate accounts for 1 gram; absolute ethanol accounts for 1 gram; glacial acetic acid accounts for 5 grams; ethanolamine accounted for 0.1 grams; water 91.9 grams.

Its production process is as follows:

1) Configuration of various preparatory solutions: Mix 91.9 grams of water, 0.33 grams of 1/3 absolute ethanol, and 1 gram of zinc acetate dihydrate on a magnetic stirrer with a temperature of about 10°C and a speed of 1600 rpm After stirring for a period of time, a uniform and transparent A solution was formed, and butyl titanate, the rest of absolute ethanol, and 3/4 of glacial acetic acid were stirred evenly to form a B solution.

2) Stir 1 gram of butyl titanate, the balance of 0.67 grams of absolute ethanol, and 3.75 grams of glacial acetic acid to form B solution,

3) When solution A is stirred, the stirring speed is 1000 rpm to 2000 rpm, and 0.1 g of ethanolamine is added dropwise to solution A to form a white precipitate, and then add the remaining 1.25 g of glacial acetic acid to carry out Peptized to form a colorless and transparent C solution,

4) When solution C is stirred, slowly pour into solution B, and keep stirring with a magnetic stirrer during the pouring process to form solution D, and then stir for 30 minutes to 3 hours to form antibacterial, anti-ultraviolet TiO ₂ /ZnO and Doped with Ag ⁺ nano sol finishing agent, the stirring speed is 1000 rpm to 2000 rpm. Store in a tea jar, in an airtight bag. The storage temperature is 4°C.

The finishing process of the fabric using the above-mentioned functional finishing liquid:

First, dilute the functional finishing solution to a certain concentration (0.2-0.4mol/L), and then adopt the following process: two dipping and two rolling (with liquid amount 70-80%)→drying (80°C, 3min)→baking (170 ℃, cotton 150℃, polyester 170℃, 3min) → hot water washing (60℃) → drying (80℃, 3min)

Example 2: Using butyl titanate and zinc acetate as precursors, glacial acetic acid as catalyst and peptizer, water as solvent, absolute ethanol as solvent for butyl titanate, ethanolamine as precipitant and providing OH ^- , after hydrolysis , TiO ₂ /ZnO nano sol finishing agent formed by polycondensation reaction, its components and weight percentage content are as follows: butyl titanate accounts for 15 grams, zinc acetate dihydrate accounts for 12 grams, absolute ethanol accounts for 20 grams, glacial acetic acid accounts for 15 grams gram, ethanolamine accounts for 5 grams, and balance is the water of 33 grams.

Its production process is as follows:

1) 12 grams of zinc acetate dihydrate, 6.67 grams of dehydrated alcohol and 33 grams of water are mixed with 1/3 amount, and the rotating speed is a magnetic stirrer at 1600 rpm to form uniform and transparent A solution after stirring for a period of time, Operate at a temperature below 20°C,

2) Stir 15 grams of butyl titanate, the balance of 13.33 grams of absolute ethanol, and 11.25 grams of 3/4 amount of glacial acetic acid to form a B solution,

3) When solution A is stirred, the stirring speed is 1000 rpm to 2000 rpm, and 5 grams of ethanolamine is added dropwise to solution A to form a white precipitate, and then add the remaining 3.75 grams of glacial acetic acid to carry out Peptized to form a colorless and transparent C solution,

4) When solution C is stirred, slowly pour into solution B, and keep stirring with a magnetic stirrer during the pouring process to form solution D, and then stir for 30 minutes to 3 hours to form antibacterial, anti-ultraviolet TiO ₂ /ZnO and Doped with Ag ⁺ nano sol finishing agent, the stirring speed is 1000 rpm to 2000 rpm. Store in a tea jar, in an airtight bag. The storage temperature is 4°C.

The finishing process of the fabric using the above-mentioned functional finishing liquid:

First, dilute the functional finishing solution to a certain concentration (0.2-0.4mol/L), and then adopt the following process: two dipping and two rolling (with liquid amount of 70-80%)→drying (80°C, 3min)→baking ( 170°C, cotton 150°C, polyester 170°C, 3min) → hot water washing (60°C) → drying (80°C, 3min).

Claims (7)

1, a kind of fabric nano post-treatment reagent is characterized in that: with butyl titanate and zinc acetate is predecessor, and glacial acetic acid is catalyst and peptizing agent, and water is solvent, and absolute ethyl alcohol is the solvent of butyl titanate, and monoethanolamine is for precipitating agent and OH is provided ^-, through the TiO of hydrolysis, polycondensation reaction formation ₂/ ZnO Nano sol finishing agent, its component and weight percent content are as follows: butyl titanate accounts for 1～15%; Two water zinc acetates account for 1～12%; Absolute ethyl alcohol accounts for 1%～20%; Glacial acetic acid accounts for 5%～15%; Monoethanolamine accounts for 0.1%～5%; Water surplus.

2. the preparation technology of a fabric nano post-treatment reagent, it is characterized in that: its preparation technology is as follows:

1) choosing of reagent material: predecessor is chosen butyl titanate and zinc acetate, and catalyst and peptizing agent are chosen glacial acetic acid, and water is solvent, and absolute ethyl alcohol is the solvent of butyl titanate, and monoethanolamine is for precipitating agent and OH is provided ^-, silver nitrate provides Ag ⁺,

2) configuration of various preparation solution: water, 1/3 absolute ethyl alcohol, two water zinc acetates are stirred form A solution, the absolute ethyl alcohol of butyl titanate, surplus, 3/4 glacial acetic acid stir and form B solution,

3) under the situation of A solution stirring, mixing speed is 1000 rev/mins～2000 rev/mins, and monoethanolamine is added drop-wise in the A solution, forms white precipitate, adds the glacial acetic acid of surplus then, carries out peptization, forms C solution,

4) under the situation of C solution stirring, slowly pour B solution into, form D solution, and then stirred 30 minutes～3 hours, formation has antibiotic, uvioresistant TiO ₂/ ZnO and mix Ag ⁺Nano sol finishing agent, mixing speed are 1000 rev/mins～2000 rev/mins.

3, the preparation technology of fabric nano post-treatment reagent according to claim 2 is characterized in that: the hydrolysis of reagent, polycondensation reaction temperature are controlled at 0 ℃～30 ℃, and the Nano sol finishing agent liquid storage temperature of preparing is 0 ℃～20 ℃.

4, the preparation technology of fabric nano post-treatment reagent according to claim 2 is characterized in that: in preparation process, the mixing speed of reagent is controlled at 1000 rev/mins～2000 rev/mins.

5, the preparation technology of fabric nano post-treatment reagent according to claim 2 is characterized in that: in preparation process, B solution is poured speed in the A solution into for slowly pouring 1/per second～100/per second into.

6, the preparation technology of fabric nano post-treatment reagent according to claim 2 is characterized in that: D solution is kept in Dark Place, and with dark brown bottled, preserve in the darkroom.

7. method for sorting that utilizes the described textile finishing reagent of claim 1 to fabric, it is characterized in that: its technical process is as follows: at first finishing functions liquid is diluted to finite concentration (0.2～0.4mol/L), adopt following technical process then:

1) pad, the band liquid measure is 60%～80%;

2) oven dry, bake out temperature is 80 ℃, the time is 3 minutes;

3) bake, baking temperature is 130 ℃～210 ℃;

4) hot water wash, temperature are 60 ℃;

5) oven dry, bake out temperature is 80 ℃, the time is 3 minutes.