CN-118029178-B - Modified organic hydrotalcite paste printed by insoluble azo dye of cotton fabric, and preparation method and application thereof

CN118029178BCN 118029178 BCN118029178 BCN 118029178BCN-118029178-B

Abstract

The invention relates to a modified organic hydrotalcite paste printed by insoluble azo dyes of cotton fabrics, a preparation method and application thereof. The modified organic hydrotalcite paste is prepared by the following steps of firstly preparing hydrotalcite by adopting nitrate, sodium salt and the like, then preparing an organic polymer by adopting acrylic acid, diallyl dimethyl ammonium chloride and allyl polyoxyethylene ether, and finally reacting the hydrotalcite with the organic polymer to prepare the modified organic hydrotalcite. The modified organic hydrotalcite paste prepared by the invention is used for printing insoluble azo dyes of cotton fabrics, and the prepared printed fabric has the characteristics of high paste removal rate of 92%, good softness, high contour definition, high permeability of 87%, high dry friction color fastness, high soaping color fastness and the like, and has good application prospect.

Inventors

PENG XIONGYI
LI NING
YAN JUNLONG
AI LI
XIA DONGSHENG
ZHANG HAO
CHEN KAI

Assignees

武汉纺织大学

Dates

Publication Date: 20260508
Application Date: 20240305

Claims (8)

1. A method for preparing a modified organic hydrotalcite paste printed by insoluble azo dyes of cotton fabrics, which is characterized by comprising the following steps: (1) The preparation method of hydrotalcite comprises the steps of dissolving magnesium nitrate, calcium nitrate and aluminum nitrate in distilled water to obtain a mixed aqueous solution of magnesium nitrate, calcium nitrate and aluminum nitrate, dissolving sodium carbonate, sodium oxalate and sodium bicarbonate in distilled water to obtain a mixed aqueous solution of sodium carbonate, sodium oxalate and sodium bicarbonate, dropwise adding the mixed aqueous solution of sodium carbonate, sodium oxalate and sodium bicarbonate into the mixed aqueous solution of magnesium nitrate, calcium nitrate and aluminum nitrate for 2-4 hours under stirring, regulating the pH value of a reaction solution to 10-11 by using a 20-30wt% sodium hydroxide aqueous solution after the dropwise addition is completed, stirring for reaction, regulating the reaction temperature to 50-70 ℃, reacting for 3-5 hours, filtering after the reaction is completed, washing by using distilled water, and finally drying to obtain hydrotalcite; (2) Preparing an organic polymer, namely dissolving acrylic acid, diallyl dimethyl ammonium chloride and an allyl polyoxyethylene ether monomer with a polymerization degree of 23 into distilled water simultaneously to prepare a monomer solution, dissolving an ammonium persulfate initiator into the distilled water to prepare an ammonium persulfate initiator aqueous solution for later use, then respectively dropwise adding the prepared monomer solution and the ammonium persulfate initiator aqueous solution into a four-neck flask filled with distilled water under the stirring condition at the temperature of 79-81 ℃ for 2-3 hours, and preserving heat for 3-4 hours after the dropwise adding is finished; (3) The preparation of the modified organic hydrotalcite comprises the steps of diluting the polymer aqueous solution prepared in the step (2) to 1-2% by mass with distilled water, adding the diluted polymer aqueous solution into the hydrotalcite prepared in the step (1), stirring for reaction, adjusting the reaction temperature to 50-70 ℃ and the reaction time to 3-5 hours, filtering after the reaction is finished, washing with distilled water, drying, grinding, and sieving the ground powder with a 100-200-mesh screen to obtain the modified organic hydrotalcite paste; wherein in the step (2), the molar ratio of the acrylic acid to the diallyl dimethyl ammonium chloride to the allyl polyoxyethylene ether with the polymerization degree of 23 is 1:0.3-0.5:0.03-0.05, and the ammonium persulfate accounts for 1-3wt% of the acrylic acid.
2. The method for preparing the modified organic hydrotalcite paste printed by the insoluble azo dye for cotton fabrics, according to claim 1, is characterized in that the dosage ratio of magnesium nitrate, calcium nitrate, aluminum nitrate and distilled water in the step (1) is1 mol:0.1-0.2 mol:0.2-0.4 mol:1000-1200 mL, and the dosage ratio of sodium carbonate, sodium oxalate and sodium bicarbonate to distilled water is1 mol:0.1-0.2 mol:1-2 mol:1000-1200 mL.
3. The method for preparing the modified organic hydrotalcite paste printed by the insoluble azo dye of cotton fabrics according to claim 1, wherein the dosage ratio of hydrotalcite prepared in the step (1) to diluted polymer aqueous solution in the step (3) is 1g to (10-12) mL.
4. The modified organic hydrotalcite paste printed by cotton fabric insoluble azo dye is characterized by being prepared by the preparation method of the modified organic hydrotalcite paste printed by cotton fabric insoluble azo dye according to any one of claims 1 to 3.
5. The use of the modified organic hydrotalcite paste according to claim 4 for printing insoluble azo dyes on cotton fabrics, wherein the method comprises the steps of weighing dye materials according to a color paste prescription, mixing the insoluble azo dyes into paste with 10mL of cold water, dissolving the leveling agent O with 10mL of hot water until the dye materials are cooled, dissolving the paste insoluble azo dyes, the leveling agent O and 98wt% of acetic acid with distilled water, mixing the materials uniformly to dissolve the materials, adding the modified organic hydrotalcite paste finally, stirring the materials uniformly to obtain the cotton fabric insoluble azo dye printing color paste, and printing the obtained color paste on cotton fabrics.
6. The application of the modified organic hydrotalcite paste printed by the insoluble azo dye of the cotton fabric, according to claim 5, is characterized in that the color paste is prepared by adding 20-24 g of the modified organic hydrotalcite paste, 3-5 g of the insoluble azo dye, 1-2 g of a leveling agent O, 5-10 mL of 98wt% acetic acid and 100g of water.
7. The use of a modified organic hydrotalcite paste according to claim 5 for printing insoluble azo dyes on cotton fabrics, wherein said insoluble azo dye is any one of the group consisting of tryptophane AS, tryptophane AS-TR, tryptophane AS-D and tryptophane AS-BS.
8. The use of the modified organic hydrotalcite paste according to claim 5 for printing insoluble azo dyes on cotton fabrics, wherein the printing process comprises flat screen printing, 1 time of scraping, 3min of drying at 100 ℃, 10min of steaming at 102 ℃,2 times of washing with cold water, soap boiling, cold water washing and drying.

Description

Modified organic hydrotalcite paste printed by insoluble azo dye of cotton fabric, and preparation method and application thereof Technical Field The invention belongs to the technical field of preparation and application of paste, and particularly relates to a modified organic hydrotalcite paste printed by insoluble azo dyes of cotton fabrics, and a preparation method and application thereof. Background The printing paste is a high molecular compound which plays roles in thickening and dye transferring in textile printing paste, and can be dissolved in water or fully swelled and dispersed in water to form thick colloidal solution. As an indispensable important component in the printing paste, the rheological property, water holding property, reactivity with reactive dyes, washing difficulty and the like of the printing paste directly influence the printing effect, such as color light, surface color quantity, pattern contour definition, printing uniformity, hand feeling and the like of printed fabrics. Insoluble azo dyes, also known as ice dyes, are a class of water-insoluble azo dyes that are produced on fabrics under ice cooling. Insoluble azo has excellent fastness properties, and the dye can obtain vivid color under any color, so the dye is more economical than vat dye, and the insoluble azo dye can be used for dyeing cotton spinning products of any shape. Hydrotalcite materials belong to the class of anionic layered compounds. The lamellar compound is a compound with lamellar structure and interlayer ion and exchangeable property, and by utilizing the intercalation property of lamellar compound host under the action of strong polar molecule and the exchangeable property of interlayer ion, some functional guest substances are introduced into interlayer gaps and the distance between layers is expanded so as to form the lamellar compound. The structural characteristics of hydrotalcite and its compounds allow the exchange of interlayer anions with various anions, including inorganic ions, organic ions, homoions, heteropolyacid ions and anions of complex compounds. By utilizing the property of hydrotalcite and its compound, different hydrotalcite types can be synthesized by modulating the interlayer anions and endowed with different properties, so as to obtain new materials with different functions. Because hydrotalcite has no fixed chemical composition, the element types and the composition proportion of a main laminate, the types and the quantity of interlayer anions and the two-dimensional pore channel structure of the hydrotalcite can be modulated in a wide range according to the needs, so that the material with special structure and performance is obtained. The adjustability of the composition and structure of hydrotalcite and the resulting versatility make hydrotalcite a novel material with great research potential and application prospect. In recent years, organic modified hydrotalcite has been rapidly developed and applied to various fields, such as adsorbents, and literature research shows that the application of the organic modified hydrotalcite in the field of paste has not been reported yet. Common hydrotalcite is not easy to be gelatinized, and the organic modified hydrotalcite can increase the possibility of gelatinization by adjusting the molecular structure of organic matters. The common hydrotalcite can not uniformly disperse chemical auxiliary agents and dyes in a colloid system, has large viscosity change during dilution, and has weak dye transferring capability. Because of these disadvantages, the use of hydrotalcite in the field of printing pastes is limited, and these disadvantages must be technically broken through. The paste materials commonly used for cotton fabric insoluble azo dye printing comprise wheat starch, synthetic dragon gum, sodium alginate and the like, and the paste materials are high in price, so that the use cost of the paste materials is increased. Because of these drawbacks, the use of organically modified hydrotalcite in a paste for printing of cotton-insoluble azo dyes is of great importance. Disclosure of Invention Aiming at the defects in the prior art, the invention aims to provide a modified organic hydrotalcite paste for cotton fabric insoluble azo dye printing, and a preparation method and application thereof. The invention aims to provide a modified organic hydrotalcite paste for cotton fabric insoluble azo dye printing, which is prepared by adopting nitrate, sodium salt and the like to prepare hydrotalcite, adopting acrylic acid, diallyl dimethyl ammonium chloride and allyl polyoxyethylene ether to prepare an organic polymer, and finally, reacting hydrotalcite with the organic polymer to prepare the modified organic hydrotalcite. The invention aims to provide a preparation method of a modified organic hydrotalcite paste printed by cotton fabric insoluble azo dye, which comprises the following steps: (1) The preparation method of the hydrotalcite comprises