A kind of flame-retardant viscose fiber and preparation method thereof

Abstract

The invention discloses a fire-retardant viscose fiber and a preparation method thereof, wherein a silicon and aluminum composite fire retardant is contained in the fire-retardant viscose fiber and the preparation method of the fire-retardant fiber comprises the steps of: obtaining a spinning solution through taking cellulose pulps as a raw material and subjecting to the processing steps of yellowing, dissolving, defoaming and filtering, subjecting the spinning solution to spinning and forming in a coagulating bath, subjecting to post-processing steps of washing and desulfurization, adding right amount of sodium metasilicate and sodium metasilicate solution into a cellulose viscose solution which is dissolved to any process before the spinning and then uniformly mixing. According to the invention, the silicon and aluminum composite fire retardant is utilized to ensure that the fire-retardant effect of the prepared fire-retardant viscose fiber is greatly increased and the high temperature and alkaline resistances of the fire-retardant viscose are greatly increased; and therefore, the fire-retardant viscose fiber can be popularized and applied in high-temperature environments such as the fields of high-temperature filter media, filter materials and the like.

Description

technical field [0001] The invention relates to a flame-retardant viscose fiber, in particular to a flame-retardant viscose fiber with silicon and aluminum as composite flame retardants and a preparation method thereof. Background technique [0002] With the improvement of people's living standards and the enhancement of people-oriented security awareness, the flame retardancy of fiber products has attracted more and more attention. Many countries and regions have formulated product standards, stipulating that certain fiber products used in vehicles, public places, the elderly, and children must have flame retardant properties. With the development of flame-retardant fiber technology, flame-retardant fibers are further required to have better performance in terms of environmental protection, temperature resistance, textile processing, and comfort, so as to meet the needs of social development. [0003] At present, the flame-retardant modification of regenerated cellulose fi...

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Problems solved by technology

[0004] However, the disadvantages of the above two kinds of flame-retardant regenerated cellulose fibers are that the former emits a large amount of toxic smoke when the fiber is burned, the environmental protection effect is poor, and it is easy to suffocate people, and the cost of flame retardants is very high. The products are mainly used in military, fire-fighting It is difficult to popularize and apply it in the civilian field, and its development prospect is not optimistic; the main problems of the latter are the difficulty in textile processing and poor alkali resistance, which are mainly used in industrial textiles, which are difficult to apply in the textile field, and its durability The high temperature processing ability is also poor, it is difficult to popularize and apply at high temperature, such as high temperature filter material, filter material and other fields, there are great limitations