Process for producing fire retardant man-made protein hair

Abstract

The invention discloses a preparing method of flame-proof artificial protein hair, which comprises the following steps: (1)dissolving superfine hair powder and acrylonitrile copolymer in solvent at 55-75 deg. c; stirring and mixing for 2-5 h; filter-pressing; debubbling; getting mixed spinning raw liquid; (2)choosing water solution of 45-75% dimethyl formamide (DMF)or dimethyl acetamide (DMAC)as setting bath; spinning; freezing; washing; drawing; hot-shaping; getting the product. This method possesses simple operation, wide source of raw material and low cost, which product possesses good flame-proof property.

Description

technical field

[0001] The invention belongs to a method for preparing artificial protein hair, in particular to a method for preparing flame-retardant artificial protein hair. Background technique

[0002] Artificial hair is an important fashion accessory in modern life, with an annual global consumption of more than 100,000 tons. The production and application of artificial hair abroad began in the 1970s, while in my country it began in the 1990s. So far, the application penetration rate is still very low, and most of the products produced are used for export.

[0003] Most of the early artificial hair is produced by polyethylene terephthalate (PET), which has high melting point, high elastic modulus, good transparency, chemical resistance and other excellent properties, and the price is relatively low. . But PET fiber is flammable, in order to obtain flame-retardant PET artificial hair, people have carried out research on this, for example CN11435517A discloses that a k...