Technological process of producing fire retardant antiflux fiber

Abstract

The present invention discloses technological process of producing fire retardant antiflux fiber. The fire retardant antiflux fiber is produced with cellulose pulp as material, and the production process includes the steps of: dipping, squeezing, crushing, ageing, sulfidizing, maturating, spinning, refining and stoving. The refining step includes washing, cross-liking and dewatering and oiling; and in the sulfidizing step, the silicon fire retardant is compounded into solution added into the alkali cellulose through stirring for dissolving and mixing to produce viscose of fire retardant fiber. The fire retardant antiflux fiber of the present invention has high fire retardant antiflux effect, high fiber strength and excellent filtering performance.

Description

technical field [0001] The invention relates to a process for producing flame-retardant and anti-melt fibers, in particular to a method for producing flame-retardant and anti-melt fibers through steps such as dipping, pressing, crushing, aging, yellowing, filtering, ripening, spinning, scouring, and drying. process method. Background technique [0002] In vehicles, public buildings, homes and offices, people are increasingly concerned about the issue of fire prevention. In order to reduce the danger of fabric fires, various countries have formulated flame-retardant standards and usage regulations for various textiles. Non-flame-retardant fabrics are limited by fabric types and places of use. Therefore, flame-retardant and anti-melt fibers have been developed rapidly. [0003] There are two main manufacturing methods for flame retardant fibers. One is the addition method (blending method), which is to add the flame retardant to the spinning dope before spinning to make flam...

AI Technical Summary

Problems solved by technology

[0007] There was a climax in the research and development of flame-retardant fibers in China around 1990. Many companies, scientific research institutes and universities participated in it. SandofLame5060 flame retardants were used, but due to the high import price of flame retardants The quality of domestically produced flame retardants did not meet the requirements for spinning, so industrial production was not carried out in the end

[0008] At present, flame-retardant fibers on the market generally have two major disadvantages: dripping or generating smoke

Molten droplets and falling objects can easily cause burns and even ignite substances with low ignition points; the smoke produced is generally toxic gas, which can easily cause suffocation

The current research focus on the flame retardant modification of regenerated cellulose fibers is the use of phosphate flame retardants and silicic acid flame retardants, which meet the requirements of flame retardants such as no chlorination, low toxicity, and smoke suppression, but flame retardant The addition of additives is relatively large, generally more than 30%, which further reduces the original low fiber strength and affects the filtration performance of the mixed viscose

Flame retardant fibers produced by silicic acid flame retardants have disadvantages such as poor alkali resistance, desulfurization treatment cannot be performed during fiber post-treatment, and the produced flame retardant fibers are yellow in color, astringent in hand, and poor in practical performance.