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Phosphorus/nitrogen/silica sol flame retardant solution and its application in flame retardant finishing of protein fiber products

A protein fiber, flame retardant liquid technology, applied in the direction of flame retardant fibers, fiber processing, animal fibers, etc., can solve the problem of poor water washing resistance of flame retardant fabrics, complicated synthesis process of flame retardant liquid, and long time consuming of flame retardant liquid synthesis. problem, to achieve the effect of high flame retardant efficiency, mild reaction conditions and excellent flame retardant performance

Active Publication Date: 2022-04-01
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Chinese invention patent CN 103161074A discloses a phosphorus-, nitrogen-, and silicon-containing flame-retardant liquid for fabric finishing and its preparation method. Firstly, reactive phosphide and epoxy-containing silane coupling agent are used to synthesize phosphorus-containing and silicon-containing liquids. Compounds, and then simply mixed with nitrogen-containing compounds to prepare phosphorus, nitrogen, and silicon-containing flame retardant liquids, and to prepare flame-retardant cotton and polyester fabrics through padding and baking processes, but the flame retardants do not contain reactive groups and cannot produce covalent bonds with fabrics. bonds, resulting in poor washing resistance of flame-retardant fabrics
Chinese invention patent CN 105178006A discloses a reactive flame retardant liquid containing phosphorus / nitrogen / silicon and its preparation method and application. Nitrogen / silicon flame retardant liquid, and prepare flame retardant cotton fabric by rolling and baking process. The synthesis of this flame retardant liquid takes a long time, and solvents are needed to dissolve it, and the flame retardant cannot be covalently bonded with the fabric.
Chinese invention patent CN 110105577A discloses a preparation method of a reactive silicon-phosphorus-nitrogen synergistic flame-retardant and water-repellent functional additive for cotton, which uses hydrogen-terminated silicone oil to react with acrylamine, and then reacts the product with ethyl dichlorophosphate to obtain Reactive silicon-phosphorus-nitrogen synergistic flame-retardant and water-repellent functional additives. The flame-retardant liquid can form covalent bonds with cotton fibers to improve the flame-retardant performance of cotton fabrics; however, the synthesis process of the flame-retardant liquid is complicated, time-consuming, and flame-retardant The content of flame retardant elements in the liquid is low, and the flame retardant efficiency is low

Method used

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  • Phosphorus/nitrogen/silica sol flame retardant solution and its application in flame retardant finishing of protein fiber products
  • Phosphorus/nitrogen/silica sol flame retardant solution and its application in flame retardant finishing of protein fiber products

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Embodiment 1

[0022] A method for preparing a phosphorus / nitrogen / silica sol flame retardant solution and a method for flame retardant finishing silk crepe chine fabric, the specific steps are as follows:

[0023] (1) Diethyl phosphite and 3-aminopropyltriethoxysilane are dissolved in ethanol to obtain a mixed solution; the mass volume of diethyl phosphite and 3-aminopropyltriethoxysilane mixed solution and ethanol The ratio is 27g:27mL;

[0024] (2) Add diethyl phosphite and 3-aminopropyltriethoxysilanol solution dropwise to glutaraldehyde solution and heat to 80°C, keep it warm for 60 minutes to obtain sol flame retardant solution; diethyl phosphite , The molar ratio of 3-aminopropyltriethoxysilane and glutaraldehyde is 2:2:2; the concentration of diethyl phosphite in the sol flame retardant solution is 0.75mol / L;

[0025] (3) Immerse the silk crepe de chine fabric in the sol flame retardant solution, heat it to 70°C, and keep it warm for 60 minutes to obtain the flame retardant silk cre...

Embodiment 2

[0029] A method for preparing a phosphorus / nitrogen / silica sol flame retardant solution and a method for flame retardant finishing silk crepe chine fabric, the specific steps are as follows:

[0030] (1) Dimethyl phosphite and 3-aminopropylmethyldiethoxysilane are dissolved in ethanol to obtain a mixed solution; Dimethyl phosphite and 3-aminopropylmethyldiethoxysilane mixed solution are mixed with The mass volume ratio of ethanol is 16g:20mL;

[0031] (2) Add dimethyl phosphite and 3-aminopropylmethyldiethoxysilanol solution dropwise into glyoxal solution and heat to 85°C, keep it warm for 50min to obtain sol flame retardant solution; diphosphite The molar ratio of methyl ester, 3-aminopropylmethyldiethoxysilane and glyoxal is 2:2:1.5; the concentration of dimethyl phosphite in the sol flame retardant solution is 0.5mol / L;

[0032] (3) Immerse the silk crepe de chine fabric in the sol flame-retardant solution, heat it to 80°C, and keep it warm for 50 minutes to obtain the fla...

Embodiment 3

[0034] A preparation method of phosphorus / nitrogen / silica sol flame retardant liquid and a method of flame retardant finishing silk crepe satin fabric, the specific steps are as follows:

[0035] (1) Diethyl phosphite and aminoethylaminopropyl triethoxysilane are dissolved in ethanol to obtain a mixed solution; the mixture of diethyl phosphite and aminoethylaminopropyl triethoxysilane and ethanol The mass volume ratio is 8g:15mL;

[0036] (2) Add diethyl phosphite and aminoethylaminopropyl triethoxysilanol solution dropwise to the malondialdehyde solution and heat it to 70°C, then keep it warm for 80 minutes to obtain a sol flame retardant solution; diethyl phosphite The molar ratio of ester, aminoethylaminopropyltriethoxysilane and malondialdehyde is 2:2:1; the concentration of diethyl phosphite in the sol flame retardant solution is 0.25mol / L;

[0037] (3) Immerse the silk crepe satin fabric in the sol flame retardant solution, heat it to 75°C, and keep it warm for 70 minut...

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Abstract

The invention relates to a phosphorus / nitrogen / silica sol flame retardant liquid and its application in flame retardant finishing of protein fiber products, belonging to the technical field of textile flame retardant finishing. The invention prepares phosphorus / nitrogen / silica sol flame retardant liquid by using phosphite, aminosilane and binary aldehyde through Kabachnik-Fields reaction. The flame retardant liquid contains active aldehyde groups, which undergo a Schiff base cross-linking reaction with the amino groups on the protein fiber products, and fix the flame retardant on the protein fibers through covalent bonds. The flame retardant liquid prepared by the invention has high flame retardant efficiency, and the protein fiber products finished with the flame retardant liquid not only have excellent flame retardant effect, but also have good washing resistance. The preparation process is simple, the conditions are mild, and there is no formaldehyde release, so it has broad application prospects and important practical application value.

Description

technical field [0001] The invention relates to the technical field of flame-retardant finishing of textiles, in particular to a phosphorus / nitrogen / silica sol flame-retardant liquid and its application in flame-retardant finishing of protein fiber products. Background technique [0002] At present, textiles are widely used in various fields such as life and science and technology. Protein fiber products such as wool and silk fabrics have good wearing properties, are comfortable to wear, and have excellent characteristics such as ecological health care, and are often used as high-grade textile materials. With the improvement of the quality of life, the application of high-grade protein fiber products is becoming more and more extensive. Protein fibers have high nitrogen content and moisture content and have certain flame retardant properties, but their inherent flame retardant properties still cannot meet the requirements of flame retardant textiles. Therefore, it is of gr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G77/395C08G77/26D06M15/643D06M101/10D06M101/12
CPCC08G77/395C08G77/26D06M15/643D06M15/6436D06M2101/10D06M2200/30D06M2101/12
Inventor 程献伟金文杰关晋平陈国强
Owner SUZHOU UNIV