阅读说明：本技术 一种用于无污水纳米印染的染料助剂及其制备方法 (dye assistant for sewage-free nano printing and dyeing and preparation method thereof ) 是由 张安达 于 2019-10-24 设计创作，主要内容包括：本发明涉及一种用于无污水纳米印染的染料助剂及其制备方法,染料助剂每100份包括以下重量份组分：二乙烯乙二醇2-8份、N-环己基吡咯烷酮0.5-1.5份、元明粉2-6份、分散剂1-5份、螯合剂0.5-5份、非离子渗透剂0.5-2份、PH稳定剂0.3-1.5份、果胶酶0.5-3份以及卵磷脂0.2-2份,余量为去离子水；具体包括以下制备步骤：S1.配料；S2.基液制备：向反应容器中加入去离子水、二乙烯乙二醇以及N-环己基吡咯烷酮进行充分搅拌；S3.加料混合：再依次加入元明粉、分散剂、螯合剂以及非离子渗透剂进行充分搅拌,继续加入果胶酶与卵磷脂进行充分搅拌,最后加入PH稳定剂进行充分搅拌；S4.助剂制备：将混合均匀的搅拌液静置15-20min,制得染料助剂。本发明具有具有提高分散染料颗粒分散稳定性的效果。(The invention relates to a dye auxiliary agent for sewage-free nano printing and dyeing and a preparation method thereof, wherein 100 parts of the dye auxiliary agent comprises the following components in parts by weight: 2-8 parts of diethylene glycol, 0.5-1.5 parts of N-cyclohexyl pyrrolidone, 2-6 parts of anhydrous sodium sulphate, 1-5 parts of dispersing agent, 0.5-5 parts of chelating agent, 0.5-2 parts of non-ionic penetrating agent, 0.3-1.5 parts of pH stabilizer, 0.5-3 parts of pectinase, 0.2-2 parts of lecithin and the balance of deionized water; the preparation method specifically comprises the following preparation steps: s1, preparing materials; s2, preparing base liquid: adding deionized water, diethylene glycol and N-cyclohexyl pyrrolidone into a reaction vessel for fully stirring; s3, feeding and mixing: sequentially adding anhydrous sodium sulphate, dispersant, chelating agent and non-ionic penetrant, stirring thoroughly, continuously adding pectinase and lecithin, stirring thoroughly, and finally adding pH stabilizer, stirring thoroughly; s4, preparing an auxiliary agent: and standing the uniformly mixed stirring liquid for 15-20min to obtain the dye auxiliary agent. The invention has the effect of improving the dispersion stability of the disperse dye particles.)

1. The dye auxiliary for sewage-free nano printing and dyeing comprises the following components in parts by weight per 100 parts: 2-8 parts of diethylene glycol, 0.5-1.5 parts of N-cyclohexyl pyrrolidone, 2-6 parts of anhydrous sodium sulphate, 1-5 parts of dispersing agent, 0.5-5 parts of chelating agent, 0.5-2 parts of non-ionic penetrating agent, 0.3-1.5 parts of pH stabilizer and the balance of deionized water; the dispersing agent is a compound of sodium lignosulfonate and hexadecyl trimethyl ammonium chloride.

2. The dye assistant for wastewater-free nano printing and dyeing according to claim 1, wherein the dye assistant comprises: the mass fraction ratio of the mixture of sodium lignosulfonate and hexadecyl trimethyl ammonium chloride is 1: (0.2-0.8).

3. The dye assistant for wastewater-free nano printing and dyeing according to claim 1, wherein the dye assistant comprises: the components also comprise 0.5-3 parts of pectinase.

4. The dye assistant for wastewater-free nano printing and dyeing according to claim 1, wherein the dye assistant comprises: the components also comprise 0.2-2 parts of lecithin.

5. The dye assistant for wastewater-free nano printing and dyeing according to claim 1, wherein the dye assistant comprises: the chelating agent is preferably one or a mixture of two or more of maleic anhydride, acrylamide or acrylic acid.

6. The dye assistant for wastewater-free nano printing and dyeing according to claim 1, wherein the dye assistant comprises: the non-ionic penetrant is any one of JFC, JFC-1 or JFC-2.

7. the dye assistant for wastewater-free nano printing and dyeing according to claim 1, wherein the dye assistant comprises: the pH stabilizer is preferably acetic acid.

8. a preparation method of a dye auxiliary agent for sewage-free nano printing and dyeing specifically comprises the following preparation steps:

S1, material preparation: the dye auxiliary agent comprises the following components in parts by weight per 100 parts: 2-8 parts of diethylene glycol, 0.5-1.5 parts of N-cyclohexyl pyrrolidone, 2-6 parts of anhydrous sodium sulphate, 1-5 parts of dispersing agent, 0.5-5 parts of chelating agent, 0.5-2 parts of non-ionic penetrating agent, 0.3-1.5 parts of pH stabilizer, 0.5-3 parts of pectinase, 0.2-2 parts of lecithin and the balance of deionized water;

S2, preparing base liquid: adding deionized water, diethylene glycol and N-cyclohexyl pyrrolidone into a reaction vessel for fully stirring;

S3, feeding and mixing: sequentially adding anhydrous sodium sulphate, dispersant, chelating agent and non-ionic penetrant, stirring thoroughly, continuously adding pectinase and lecithin, stirring thoroughly, and finally adding pH stabilizer, stirring thoroughly;

S4, preparing an auxiliary agent: and standing the uniformly mixed stirring liquid for 15-20min to obtain the dye auxiliary agent.

Technical Field

The invention relates to the technical field of textile printing and dyeing, in particular to a dye auxiliary for sewage-free nano printing and dyeing and a preparation method thereof.

Background

The printing and dyeing technology in China has a very long history, the patterns drawn by the printing and dyeing process are extremely lifelike and lifelike, the highly developed textile level in China is reflected, and the wisdom and the pungent sweat of Chinese people are gathered behind the advanced printing and dyeing technology. The nano printing and dyeing without sewage is to apply the nano technology to the printing and dyeing industry, and reduce or even not generate printing and dyeing wastewater in the printing and dyeing process, thereby improving the environmental protection of the printing and dyeing process.

In the printing and dyeing process, dyes are required to color the fabric, and the disperse dyes are nonionic dyes which have simple structures, are slightly soluble in water and exist in a solution as a dispersion of fine particles, and do not have-SO in the molecular structure₃ ^-Water-soluble groups such as-COO-and the like, and having only a certain number of-OH and-NH groups₂And non-ionic polar substituents, so their solubility in water is low. Therefore, a large amount of dispersant is added during commercial processing of disperse dyes. During dyeing, the disperse dye is dispersed into a suspension form by virtue of the dye assistant, the dye assistant is favorable for reducing the agglomeration of disperse dye particles, and the phenomenon that tar-like substances or color spots appear on the surface of a dyed object is reduced, so that the dyeing quality of the fabric is ensured.

The disperse dye particles in suspension form are easy to aggregate mutually to generate coagulation due to the dual functions of high temperature and dye liquor shearing force, and the performance of the coagulated disperse dye can cause the performance reduction of grey cloth such as color brightness, dyeing firmness and the like when the grey cloth is printed and dyed. Therefore, how to keep the disperse dye particles in a dispersed suspension state for a long time, that is, how to improve the dispersion stability of the disperse dye particles, is a problem to be solved urgently in the industry at present.

Disclosure of Invention

The invention aims to provide a dye auxiliary agent for sewage-free nano printing and dyeing, which has the effect of improving the dispersion stability of disperse dye particles.

The invention also aims to provide a preparation method of the dye auxiliary agent for sewage-free nano printing and dyeing based on the first aim.

The technical purpose of the invention is realized by the following technical scheme: the dye auxiliary for sewage-free nano printing and dyeing comprises the following components in parts by weight per 100 parts: 2-8 parts of diethylene glycol, 0.5-1.5 parts of N-cyclohexyl pyrrolidone, 2-6 parts of anhydrous sodium sulphate, 1-5 parts of dispersing agent, 0.5-5 parts of chelating agent, 0.5-2 parts of non-ionic penetrating agent, 0.3-1.5 parts of pH stabilizer and the balance of deionized water; the dispersing agent is a compound of sodium lignosulfonate and hexadecyl trimethyl ammonium chloride.

By adopting the technical scheme, as the sulfonic group is more stable than the carboxyl group, the sodium lignosulfonate is an anionic surfactant with higher stability, and a stronger negative charge layer is formed on the outer layer of the disperse dye particles, so that the disperse dye particles are mutually exclusive, the possibility of coagulation is reduced, and meanwhile, the sulfonic group can also form a hydration layer on the outer surface of the disperse dye molecules, so that the dispersion stability of the disperse dye particles is improved; the hexadecyl trimethyl ammonium chloride is a cationic surfactant containing quaternary ammonium groups, the volume of micelles formed by the cationic surfactant in the deionized water solution is increased, the solubilizing capability of the disperse dye is enhanced, and the improvement of the solubility of the disperse dye in the deionized water is facilitated, so that the dispersing power of the disperse dye is enhanced; sodium lignosulfonate and hexadecyl trimethyl ammonium chloride are compounded, so that the sodium lignosulfonate and the hexadecyl trimethyl ammonium chloride have good compatibility and a synergistic effect, and the dispersion stability of disperse dye particles in deionized water is greatly improved;

Part of quaternary ammonium groups are combined with hydroxyl groups in the fabric in the printing and dyeing process, so that the color fixing performance of the fabric is enhanced;

The diethylene glycol and the N-cyclohexyl pyrrolidone both have the effect of promoting the dispersion of the disperse dye into the fabric, and the diethylene glycol and the N-cyclohexyl pyrrolidone are mixed according to a certain proportion, so that the diethylene glycol and the N-cyclohexyl pyrrolidone have a synergistic effect, and the rate of the dispersion of the disperse dye into the fabric is favorably increased, so that the dyeing effect of the disperse dye on the fabric is improved;

use of anhydrous sodium sulphate for increasing Na content in water bath⁺Concentration of (A), Na⁺can be adsorbed on the surface of the fabric to reduce the negative charge on the surface of the fabric, thereby reducing the repulsive force between the disperse dye particles and the fabric, enabling the disperse dye to be easy to dye the fabric, and improving the dyeing effect of the fabric.

The invention is further configured to: the mass fraction ratio of the mixture of sodium lignosulfonate and hexadecyl trimethyl ammonium chloride is 1: (0.2-0.8).

by adopting the technical scheme, the mixture ratio of the sodium lignosulfonate to the hexadecyl trimethyl ammonium chloride needs to be controlled within a proper range during compounding, so that the inactivation of the sodium lignosulfonate and the hexadecyl trimethyl ammonium chloride caused by mutual influence on the stability of the sodium lignosulfonate and the hexadecyl trimethyl ammonium chloride under improper mixture ratio is avoided.

The invention is further configured to: the components also comprise 0.5-3 parts of pectinase.

By adopting the technical scheme, the pectinase is used for decomposing pectin containing natural cotton wax in the fabric fiber wall, and due to the removal of the cotton wax, the softness and the hydrophilicity of the fabric are obviously improved when the fabric is touched.

The invention is further configured to: the components also comprise 0.2-2 parts of lecithin.

By adopting the technical scheme, the lecithin is used as the emulsifier, so that the surface tension between various constituent phases in the suspension containing the disperse dye is improved, a uniform and stable dispersion system is formed, and the dispersion stability of the disperse dye is improved;

Lecithin molecules have both hydrophilic groups and lipophilic groups, which are accumulated on an oil/water interface, and can reduce the interfacial tension and the energy required for forming a suspension, thereby improving the energy of the suspension;

The lecithin has stronger solubilization and dispersion effects on the disperse dye, and the dyeing efficiency of the disperse dye on the fabric is improved by improving the van der Waals force between the disperse dye and fabric fiber molecules.

The invention is further configured to: the chelating agent is preferably one or a mixture of two or more of maleic anhydride, acrylamide or acrylic acid.

by adopting the technical scheme, the maleic anhydride, the acrylamide and the acrylic acid have good dispersing performance, so that the dispersing performance of each component in the dye auxiliary agent is improved, and the dispersing efficiency of the disperse dye is promoted; the chelation shielding effect of maleic anhydride, acrylamide and acrylic acid is beneficial to preventing calcium, magnesium and heavy metal ions which are attached in the pretreatment process of the fabric from forming insoluble metal salts to be precipitated on the fabric, so that the performances of oxidation resistance, touch flexibility and the like of the fabric are improved; maleic anhydride, acrylamide and acrylic acid are all biodegradable compounds, and meet the requirements of environmental-friendly production.

The invention is further configured to: the non-ionic penetrant is any one of JFC, JFC-1 or JFC-2.

By adopting the technical scheme, JFC-1 and JFC-2 are resistant to acid, alkali and hard water, have good water solubility, efficient permeation and wetting properties and dispersing and cleaning properties, and are beneficial to improving the dispersion uniformity of the disperse dye in the dye assistant and the permeability of the disperse dye into fabrics.

The invention is further configured to: the pH regulator is preferably acetic acid.

by adopting the technical scheme, after various auxiliaries are added into deionized water, a proper amount of acetic acid is added for adjusting the pH value of the dyeing auxiliary, so that the pH value is maintained in a stable and proper range.

the second technical purpose of the invention is realized by the following technical scheme: a preparation method of a dye auxiliary agent for sewage-free nano printing and dyeing specifically comprises the following preparation steps:

s1, material preparation: the dye auxiliary agent comprises the following components in parts by weight per 100 parts: 2-8 parts of diethylene glycol, 0.5-1.5 parts of N-cyclohexyl pyrrolidone, 2-6 parts of anhydrous sodium sulphate, 1-5 parts of dispersing agent, 0.5-5 parts of chelating agent, 0.5-2 parts of non-ionic penetrating agent, 0.3-1.5 parts of pH stabilizer, 0.5-3 parts of pectinase, 0.2-2 parts of lecithin and the balance of deionized water;

S2, preparing base liquid: adding deionized water, diethylene glycol and N-cyclohexyl pyrrolidone into a reaction vessel for fully stirring;

S3, feeding and mixing: sequentially adding anhydrous sodium sulphate, dispersant, chelating agent and non-ionic penetrant, stirring thoroughly, continuously adding pectinase and lecithin, stirring thoroughly, and finally adding pH stabilizer, stirring thoroughly;

S4, preparing an auxiliary agent: and standing the uniformly mixed stirring liquid for 15-20min to obtain the dye auxiliary agent.

By adopting the technical scheme, the components in the S1 are sequentially added into the reaction container in sequence, the components are fully stirred and uniformly mixed, the PH stabilizer is added to adjust the PH value of the dye auxiliary agent to be in the PH range suitable for treating the fabric, and the uniformly mixed stirring liquid is kept still for 15-20min to keep the components in the dye auxiliary agent stable, so that the dye auxiliary agent with the functions of improving the dispersion stability of the disperse dye and the coloring effect and the color fixing effect of the fabric is prepared.

In conclusion, the beneficial technical effects of the invention are as follows:

1. Sodium lignosulfonate and hexadecyl trimethyl ammonium chloride are compounded, so that the sodium lignosulfonate and the hexadecyl trimethyl ammonium chloride have good compatibility and a synergistic effect, and the dispersion stability of disperse dye particles in deionized water is greatly improved;

2. The mixture ratio of the sodium lignosulfonate and the hexadecyl trimethyl ammonium chloride needs to be controlled within a proper range during compounding, so that the sodium lignosulfonate and the hexadecyl trimethyl ammonium chloride are prevented from affecting the stability of each other under improper mixture ratio to cause inactivation of the sodium lignosulfonate and the hexadecyl trimethyl ammonium chloride;

3. Lecithin has the function of improving the surface tension among various constituent phases in the suspension liquid containing the disperse dye to form a uniform and stable dispersion system, thereby improving the dispersion stability of the disperse dye;

4. pectinase is used to decompose pectin containing natural cotton wax in the fiber wall of the fabric, thereby improving softness when the fabric is touched and hydrophilicity of the fabric.

Drawings

FIG. 1 is a flow chart of the production process of this example.

Detailed Description

the present invention will be described in further detail with reference to the accompanying drawings.