CN102965912B - Be suitable for cotton type fabric thermal transfer printing alkaline reaction type silicon titanium colloidal sol preparation method - Google Patents

Abstract

The invention discloses a method for preparing an alkali-reactive silicon-titanium sol suitable for thermal transfer printing of cotton-type fabrics, and belongs to the technical field of textile chemicals. The color depth and color brightness of the pretreated cotton-type fabric are significantly improved after thermal transfer printing, and the fabric is soft, washable and comfortable to wear. At the same time, the method is a clean printing and dyeing technology without sewage discharge and no harm to human skin, and has universal promotion and application value.

Description

Preparation method of alkaline reactive silica-titanium sol suitable for thermal transfer printing of cotton-type fabric

technical field

The invention discloses a method for preparing an alkali-reactive silicon-titanium sol suitable for thermal transfer printing of cotton-type fabrics, belonging to the technical field of textile chemistry.

Background technique

Thermal transfer printing is to use the heat sublimation performance of disperse dyes to contact the fabric with the transfer printing paper printed with patterns, and heat press on the transfer printing machine. The disperse dyes leave the transfer paper through sublimation and then condense on the fabric. The transfer of dyestuff from printed paper to fabric. The printing technology does not consume water, does not produce sewage, and is clean and pollution-free. But this printing technology can only be applied on polyester fabric, because disperse dye has no affinity to cotton fabric, so can not be applied on cotton fabric. In order to realize the transfer printing of cotton-type fabrics, patent CN02159176.81 discloses a method for thermal transfer printing of cotton fabrics, which uses fabric padding FY-3 bridging agent for pretreatment, thereby realizing the transfer of patterns to cotton fabrics . The fabric pattern printed by heat transfer is bright in color, the pattern fastness is good, and the fabric is soft and washable. Patent CN200710048901.8 discloses a method for the preparation of a surface modifier for cotton fabric disperse dye transfer printing and transfer printing pretreatment. The fabric is pretreated. The printed fabric has bright patterns, high color fastness, and is harmless to the human body. At present, the existing fabric pretreatment technology generally uses organic polymers or complexes with complex components as bridging agents. The synthesis process is relatively complicated, and there are hidden dangers to human and environmental safety, so the general promotion and application value are limited.

Through the sol-gel doping technology, the reactive alkylene oxide quaternary ammonium salt is hybridized into the silicon-titanium sol mainly composed of inorganic nanoparticles, and the alkaline reactive silicon-titanium sol is prepared and used for fabric treatment to achieve The transfer of the pattern on the transfer printing paper printed by disperse dyeing to the cotton type fabric.

Contents of the invention

The purpose of the present invention is to provide a method for preparing an alkali-reactive silicon-titanium sol suitable for thermal transfer printing of cotton-type fabrics. The specific experimental method is as follows:

1. Add 21-30 parts by weight of ethyl orthosilicate and 9-21 parts by weight of absolute ethanol to the Erlenmeyer flask in sequence, and stir evenly to form solution A; mix 10-25 parts by weight of absolute ethanol, 10-30 parts Parts of deionized water and 8-13 parts by weight of 1mol/L ammonia solution are mixed and stirred uniformly to be solution B; 2-5 parts by weight of coupling agent and 1-5 parts by weight of cationic quaternary ammonium salt are dissolved in 5- 15 parts of deionized water, stirred evenly, is solution C; under stirring condition, add solution B dropwise to solution A, stir for 30min, then add solution C dropwise to the above mixed solution, at room temperature Stir continuously for 48 hours to obtain alkaline cationic silica sol;

Described coupler is polyethylene glycol, glycerol, urea;

The cationic quaternary ammonium salt is 2,3-epoxypropyl trimethylammonium chloride, epoxypropyl phenethyl bis(octadecylaminoethyl) ammonium chloride, chloride-2-hydroxyl-3- (Trimethylamino) propyl polyethylene oxide cellulose ether, 3'-methylenebis[2,3-epoxypropyldimethyl-4'-hydroxybenzyl] ammonium chloride;

Dissolve 5-12 parts by weight of tetrabutyl titanate in 8-15 parts by weight of absolute ethanol and stir evenly to obtain solution D; mix 5-10 parts by weight of 0.5 mol/L acetic acid and 18-31 parts by weight 43-54 parts by weight of the basic cationic silica sol is placed in a conical flask, and the above solution D and solution E are slowly added dropwise to the basic cationic silica sol successively. In the silica sol, stir at room temperature for 12 hours, and then age for 120 hours to obtain the alkaline reaction type silicon titanium sol.

2. The alkaline reactive silicon-titanium sol suitable for thermal transfer printing is characterized in that the cotton fabric used is cotton and its blended fabric.

3. The application of a thermal transfer printing alkaline reaction type silicon-titanium sol on cotton fabrics is characterized in that it adopts the method of spraying or spin coating; after the treatment, the fabric is prebaked at 50-60°C for 15-40min .

4. The application of the alkaline reaction type silica-titanium sol suitable for heat transfer printing on cotton fabrics, the heat transfer process is as follows: the transfer paper printed with patterns is bonded to the pretreated cotton fabric, Lay flat, then heat treat at 200-220°C for 25-40s.

detailed description

The following examples will help to further understand the present invention, but cannot limit the content of the present invention.

The test method, the specific analysis is as follows:

(1) K/S value test

Fold the printed fabric sample into 4 layers, and use the X-rite8400 colorimeter CIE-lab colorimetric system to test the apparent color depth (K/S value) of the fabric under the condition of D65 light source and 10° field of view. Before the measurement, the instrument uses a medium-sized aperture, and the instrument is calibrated by black and white boards. Each sample was tested 8 times, and the results were averaged.

Example 1

Add 23 parts by weight of tetraethyl orthosilicate and 18 parts by weight of absolute ethanol to the Erlenmeyer flask in sequence, and stir evenly to form solution A; mix 11 parts by weight of absolute ethanol, 16 parts by weight of deionized water and 9 parts by weight of 1mol The L ammonia solution is mixed and stirred uniformly to be solution B; 3 parts by weight of polyethylene glycol and 3 parts by weight of 2,3-epoxypropyltrimethylammonium chloride are dissolved in 15 parts by weight of deionized water at room temperature, Stir evenly to obtain solution C; under stirring conditions, add solution B dropwise to solution A, stir for 30 minutes, then add solution C dropwise to the above mixture, and continue stirring at room temperature for 48 hours to obtain Alkaline cationic silica sol.

Dissolve 6 parts by weight of tetrabutyl titanate in 11 parts by weight of absolute ethanol, and stir evenly to form solution D; mix 6 parts by weight of 0.5 mol/L acetic acid with 26 parts by weight of deionized water, and stir Evenly, it is solution E; take 51 parts by weight of alkaline cationic silica sol and place it in a conical flask, slowly add the above solution D and solution E to the alkaline cationic silica sol successively, and stir for 12 hours at room temperature , and then aged for 120h, to obtain an alkaline reactive silicon-titanium sol.

The pure cotton woven fabric was pre-treated by spraying with the above-mentioned alkaline reactive silica titanium sol, and then the fabric was pre-baked at 50°C for 25 minutes. Lay the transfer paper printed with the red color block of disperse dyes with the pretreated pure cotton woven fabric, pave it flat, and then heat-treat it at 205°C for 35s.

The K/S value of the unpretreated pure cotton woven fabric was 2.45 after thermal transfer printing, while the K/S value of the pure cotton woven fabric pretreated with alkaline reactive silicon titanium sol was 10.05 after thermal transfer printing.

Example 2

Add 28 parts by weight of tetraethyl orthosilicate and 14 parts by weight of absolute ethanol to the Erlenmeyer flask in sequence, and stir evenly to form solution A; mix 14 parts by weight of absolute ethanol, 22 parts by weight of deionized water and 10 parts by weight of L ammonia solution is mixed and stirred evenly, is solution B; 4 parts by weight of urea and 2 parts by weight of epoxypropyl phenethyl bis(octadecylaminoethyl) ammonium chloride are dissolved in 6 parts by weight of deionized water at room temperature , stir evenly, it is solution C; under stirring condition, add solution B dropwise to solution A, stir for 30min, then add solution C dropwise to the above mixed solution, stir continuously at room temperature for 48h, that is Obtain alkaline cationic silica sol.

Dissolve 10 parts by weight of tetrabutyl titanate in 14 parts by weight of absolute ethanol, and stir evenly to form solution D; mix 7 parts by weight of 0.5 mol/L acetic acid with 23 parts by weight of deionized water, and stir Evenly, it is solution E; take 46 parts by weight of alkaline cationic silica sol and place it in a conical flask, slowly add the above solution D and solution E to the alkaline cationic silica sol successively, and stir for 12 hours at room temperature , and then aged for 120h to obtain an alkaline reactive silicon-titanium sol.

Spin-coat the cotton-polyester blended fabric with the above-mentioned alkaline-reactive silicon-titanium sol, and then pre-dry the fabric at 60°C for 23 minutes. Lay the transfer paper printed with the red color block of disperse dyes with the pretreated cotton-polyester blended fabric, lay it flat, and then heat-treat it at 210°C for 28s.

The K/S value of the non-pretreated cotton-polyester blended fabric was 4.18 after thermal transfer printing, while the K/S value of the cotton-polyester blended fabric pretreated with alkaline reactive silicon titanium sol was 11.67 after thermal transfer printing.

Example 3

Add 25 parts by weight of tetraethyl orthosilicate and 10 parts by weight of absolute ethanol in turn to the Erlenmeyer flask, and stir evenly to form solution A; mix 20 parts by weight of absolute ethanol, 15 parts by weight of deionized water and 12 parts by weight of The L ammonia solution is mixed and stirred evenly, which is solution B; 5 parts by weight of glycerol and 1 part by weight of chlorinated-2-hydroxyl-3-(trimethylamino)propyl polyethylene oxide cellulose ether are dissolved at room temperature In 12 parts by weight of deionized water, stir evenly to form solution C; solution A is added dropwise to solution A under the stirring condition of a magnetic stirrer, and stirred for 30 minutes, then solution C is added dropwise to the above The mixed solution was continuously stirred at room temperature for 48 hours to obtain an alkaline cationic silica sol.

Dissolve 9 parts by weight of tetrabutyl titanate in 15 parts by weight of absolute ethanol, and stir evenly to form solution D; mix 6 parts by weight of 0.5 mol/L acetic acid with 25 parts by weight of deionized water, and stir Evenly, it is solution E; take 45 parts by weight of alkaline cationic silica sol and place it in a conical flask, slowly add the above solution D and solution E to the alkaline cationic silica sol successively, and stir for 12 hours at room temperature , and then aged for 120h to obtain an alkaline reactive silicon-titanium sol.

Cotton and linen blended fabrics were pretreated by spraying with the above-mentioned alkaline reactive silicon titanium sol, and then the fabrics were prebaked at 55°C for 24 minutes. Lay the transfer paper printed with the blue color block of disperse dyes with the pretreated cotton and linen blended fabric, lay it flat, and then heat-treat it at 215°C for 26s.

The K/S value of the cotton-linen blended fabric without pretreatment was 5.32 after thermal transfer printing, while the K/S value of the cotton-linen blended fabric pretreated with alkaline reactive silicon titanium sol was 9.86 after thermal transfer printing.

Claims (4)

1. A kind of alkali-reactive silicon-titanium sol suitable for thermal transfer printing of cotton-type fabrics is characterized in that it is prepared by the following method: Add 21-30 parts by weight of tetraethyl orthosilicate and 9-21 parts by weight of absolute ethanol to the Erlenmeyer flask in sequence, stir well to form solution A; remove 10-25 parts by weight of absolute ethanol, 10-30 parts by weight of Ionized water and 8-13 parts by weight of 1mol/L ammonia solution are mixed and stirred uniformly to form solution B; 2-5 parts by weight of coupling agent and 1-5 parts by weight of cationic quaternary ammonium salt are dissolved in 5-15 parts by weight at room temperature In deionized water, stir evenly to form solution C; under stirring conditions, add solution B dropwise to solution A, stir for 30 minutes, then add solution C dropwise to the above mixed solution, and continue stirring at room temperature 48h, the alkaline cationic silica sol is obtained; Described coupler is glycerol, urea; The cationic quaternary ammonium salt is 2,3-epoxypropyl trimethylammonium chloride, epoxypropyl phenethyl bis(octadecylaminoethyl) ammonium chloride, chloride-2-hydroxyl-3- (Trimethylamino) propyl polyethylene oxide cellulose ether, 3'-methylenebis[2,3-epoxypropyldimethyl-4'-hydroxybenzyl] ammonium chloride; Dissolve 5-12 parts by weight of tetrabutyl titanate in 8-15 parts by weight of absolute ethanol and stir evenly to obtain solution D; mix 5-10 parts by weight of 0.5 mol/L acetic acid and 18-31 parts by weight 43-54 parts by weight of the basic cationic silica sol is placed in a conical flask, and the above solution D and solution E are slowly added dropwise to the basic cationic silica sol successively. In the silica sol, stir at room temperature for 12 hours, and then age for 120 hours to obtain the alkaline reaction type silicon titanium sol. 2. A kind of alkali-reactive silicon-titanium sol suitable for thermal transfer printing as claimed in claim 1, characterized in that the cotton fabric used is cotton and blended fabrics thereof. 3. The application of a kind of alkali-reactive silicon-titanium sol suitable for thermal transfer printing on cotton fabrics as claimed in claim 1, characterized in that it adopts the method of spray coating or spin coating; the treated fabric is pre-treated at 50-60°C. Bake for 15-40min. 4. the application of a kind of alkaline reaction type silica-titanium sol applicable to heat transfer printing as claimed in claim 1 on cotton fabric, its heat transfer process is: the transfer paper with disperse dye pattern and pretreated Cotton-type fabrics are laminated, laid flat, and then heat-treated at 200-220°C for 25-40s.