Degradable flat fibre bundle and its preparing process

Abstract

A flat fibre bundle is prepared from cotton pulp, wood pulp, or their mixture through alkalizing, sulfonating to obtain cellulose sulfonate as spinning dope, spinning by nozzle, bundling, plasticizing, drawing, washing in water, and desulfurizing. The coagulating bath for spinning contains sulfuric acid and zinc sulfate. Its advantages are large surface area and high looseness.

Description

1. Technical field [0001] The invention relates to the preparation of degradable fibers, especially cellulose flat degradable long-bundle fibers and a preparation method thereof. 2. Background technology [0002] The market competition of chemical fiber (including other fibers) products is becoming more and more fierce, but the main problem of the chemical fiber industry at present is that the product structure is unreasonable and the degree of differentiation is not high, which leads to a low level of competition among enterprises. After joining the WTO, they will face international market competition. The huge challenge of emphasizing technical content and product grades, especially the production and operation of easily degradable green fibers is a hot spot in the production and operation of enterprises. Such as Chinese patent application 93112922 a kind of composition containing cellulose ester. The cellulose ester contains at least 10wt% low-substituted cellulose ester...

AI Technical Summary

Problems solved by technology

Another example is in WO9625538, the multi-component system includes: a starch resin, a copolymer comprising vinyl acetate and unsaturated monomers without any functional groups, but this system is not ideal for preparing fabrics

For example, the surface area, bulkiness, etc. are not good enough, the conventional long-bundle fiber has poor elasticity, and the wet elasticity is poor, the dyeing performance is not good enough, and the monofilament strength is poor.

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