Production process for fire-retardant polyacrylonitrile hair imitating fiber

Abstract

The invention discloses a production process for a fire-retardant polyacrylonitrile hair imitating fiber, which mainly comprises a splice polymerizing process flow, a spinning process flow and a post treatment flow. During the production, the fire-retardant polyacrylonitrile hair imitating fiber is prepared by the following steps: in the polymerizing process of a fiber formed high polymer, firstly, adding proper amount of fire-retardant monomer vinyl chloride (VC) to polymerize with acrylonitrile monomer; and secondly, preparing the fiber formed high polymer into a fire-retardant fiber by a wet method. As a second monomer is added in the polyacrylonitrile structure, thereby improving the flexibility of macromolecule, reducing the glass transition temperature of copolymer and improving physical performances such as the accessibility, heat resistance, hygroscopicity and the like; in the polyacrylonitrile molecule structure, main functional group is -CN which is the dipole force formed between the insides of the macromolecule and the macromolecules, has great influence on the flexibility of a macromolecule chain, irregular helical conformation and the standard crystalline state structure, and has a series of physical properties of light fastness, mildew resistance, chemical reagent resistance and the like.

Description

technical field [0001] The invention relates to a raw material and a production process in the hair product industry, in particular to a production method of flame-retardant polyacrylonitrile imitation hair fiber. Background technique [0002] At present, hair products, known as "fashion on the head", have become the "new product family" of fashion consumption, and the development and application of the hair product industry in my country is also increasingly valued, becoming a development industry supported by the state. The market demand for wigs in developed countries and African countries is increasing, and the products are in short supply. However, with the increasing demand for hair products and the rapid increase of domestic hair products companies, natural human hair resources are increasingly scarce, prices are rising, and the contradiction between supply and demand is becoming increasingly prominent. The role of special chemical fibers as human hair substitutes is ...

AI Technical Summary

Problems solved by technology

In the absence of natural human hair resources, the domestic hair product enterprises have the only way to import this kind of special chemical fiber for wigs from abroad, which leads to higher and higher manufacturing costs and continuously reduced profits of hair product manufacturers, which has become a serious constraint at present. The "bottleneck" of the development of my country's hair products industry

Images