Flame-retardant silicate fiber, coagulation bath for producing flame-retardant silicate fiber and method for preparing flame-retardant silicate fiber

Abstract

The invention discloses flame-retardant silicate fiber, a coagulation bath for producing the flame-retardant silicate fiber and a method for preparing the flame-retardant silicate fiber. The coagulation bath for forming the silicate fiber contains H2SO4, ZnSO4, Na2SO4 and silicon series flame retardant. The method comprises the following steps of: (1) preparing cellulose xanthate viscose by using cellulose pulp as a raw material, adding a dissolved precursor solution of the flame retardant, filtering, ageing and defoaming to obtain flame-retardant spinning viscose; and (2) coagulating the flame-retardant spinning viscose in the four-component coagulation bath, drawing, refining, drying to obtain the flame-retardant viscose fiber. By adopting the four-component coagulation bath for preparing the flame-retardant fiber, the loss of the flame retardant in slivers can be reduced, the spinning property is improved, the physical and mechanical property indexes of the flame-retardant fiber are improved, and the production cost of the flame-retardant viscose fiber is reduced.

Description

technical field [0001] The invention relates to the technical field of viscose fiber, in particular to the preparation of flame-retardant viscose fiber. Background technique [0002] With the progress of society and the enhancement of people's safety awareness, the application of flame retardant fiber and its products has been paid more and more attention by people, especially the high-rise residences, hotels and various transportations that have been built one after another in China in the past ten years. Tools have higher and higher flame retardancy requirements for their interior decoration products, which has greatly accelerated the development of flame-retardant fiber technology. Its application fields have also developed from military, industrial, and fire protection to home textiles, vehicles, and public place decoration materials. At present, many countries in the world have put forward specific requirements or restrictions on the combustion performance of fibers an...

AI Technical Summary

Problems solved by technology

[0004] When a three-component coagulation bath is used to produce flame-retardant viscose fibers, a large amount of flame retardants will be lost in the coagulation bath during the spinning process, which will not only affect the flame-retardant effect of the finished product, increase the production cost of flame-retardant fibers, but also affect the viscose in the spinning process. The molding effect in the coagulation bath leads to defects in the finished flame-retardant fiber and deterioration of physical indicators, etc.