Flame-retardant wool fabric finishing method

Abstract

The invention discloses a flame-retardant wool fabric finishing method. The method includes the steps of adding a monopotassium phosphate aqueous solution to preprocess a wool fabric, dispersing globular proteins slightly cross-linked between fiber cells of the wool fabric, and conducting later-period enzyme processing; conducting enzymolysis preprocessing on the wool fabric through mixed protease obtained by mixing ficus proteinase, pronase and bromelain, making mixed protease adsorbed to surfaces of wool fibers and penetrate through the whole fibers, dispersing mixed protease along the fibers, and conducting hydrolysis, so hydrolysis is continuously conducted in sebum layers of wool fibers, and it is ensured that inner layers of wool fibers are prevented from damage; modifying the wool fabric through alkaline protease. The content of disulfide bonds in the wool fibers is decreased, the content of sulfydryl groups is increased, and the flame retardance of the wool fabric is improved; meanwhile, the washable degree of the wool fabric can be improved, the influences on the whiteness and hand feeling of wool are small, and high economic benefits are achieved.

Description

Technical field: [0001] The invention relates to a method for flame-retardant finishing of wool fabrics, belonging to the field of textile biotechnology. Background technique: [0002] Wool is a keratin-like fibrous protein, containing more cysteine, cystine, methionine, etc., and is a cross-linked polypeptide with a folded molecular structure. Although wool fabric is a combustible fiber, it has high nitrogen content and is extremely hygroscopic, has a high ignition temperature, low combustion heat and low flame temperature, and thus has high flame retardancy. Due to the improvement of the functional properties of the finished wool fabric, additives are added to reduce its flame retardancy, which makes the wool fabric easy to burn and limits the safety and practicality of wool. [0003] The main component of wool is keratin, which is composed of a variety of α-amino acid residues, which can be linked into long-chain helical molecules, which contain carboxyl groups, amine gr...

AI Technical Summary

Problems solved by technology

[0007] Chinese invention patent CN200910025310.8 discloses a method for improving the flame retardancy of wool by biological enzymatic method. Using the catalysis of transglutaminase MTG, a class of compounds containing primary amino groups and a large amount of phosphorus are grafted onto wool to improve the flame retardancy of wool. Wool flame retardancy, the technical process includes: pretreatment, MTG-containing phosphorus-containing finishing agent treatment, washing and drying, is the closest prior art of the present invention, and the wool yarn and fabrics processed by the inventive process are resistant The flammability is improved, and the limiting oxygen index is improved, but the treatment process is complicated, the process is cumbersome, and the fabric washability is poor, which is not conducive to industrialization.

[0008] Chinese invention patent CN201210318957.1 discloses a biological enzymatic method for flame-retardant finishing of silk fabrics, which belongs to the field of textile biotechnology and aims to solve the problem of low washability and high-temperature drying of silk fabrics during traditional chemical flame-retardant finishing. Defects such as damage, easy decrease in whiteness of fiber products, etc.

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