A production method of blended yarn containing aramid 1313 and polyarylate fiber

Abstract

The invention relates to a production method of a blended yarn containing aramid fibers 1313 and polyarylate fibers, the production process comprises the following steps: mixing the polyarylate fibersand the aramid 1313, the card silvers are subjected to a combing process, a drawing process, a roving process and a spinning process to prepare a blended yarn. In the raw materials used for spinning,the mass content of the aramid 1313 and polyarylate fiber are 50-80 wt% and 20-50 wt%, respectively, and the mixed card silvers of the polyarylate fiber and aramid 1313 are formed by pre-treating thepolyarylate fiber and the aramid 1313 separately, cleaning the cotton, mixing and combing, and the length of the cylinder combing dead zone is 0-3 larger than the average length of the hook portion of the polyarylate fiber and aramid 1313. The production method has simple process, and the finally obtained blended yarn has the advantages of high breaking strength, small fiber damage in the combingprocess, excellent flame retardant performance and good dimensional stability.

Description

technical field [0001] The invention belongs to the technical field of functional blended yarn and its processing, and relates to a production method of blended yarn containing aramid 1313 and polyarylate fiber. Background technique [0002] High-performance fibers are one of the important directions for the development of material science in the world today. They have important application value in the fields of military and national defense, aerospace, marine engineering, environmental protection and safety, energy development, health and sports, communication and transportation. Under the general trend of rapid development of high-tech in my country, the demand for textiles that can maintain high-strength and high-modulus physical and mechanical properties at high temperatures and have certain self-flammability is also rapidly increasing. [0003] The full name of aramid fiber is aromatic polyamide fiber. It is a high-strength, high-modulus and low-density organic synthet...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the strength of the currently disclosed flame-retardant blended yarn using aramid 1313 as raw material is not high enough, and to provide a blended yarn containing aramid 1313 and polyarylate fiber with high strength. The high-strength and high-modulus polyarylate fiber is blended with high-temperature-resistant aramid 1313, and the combed spinning process is used to improve the parallel straightness of the fibers in the sliver and the uniformity and strength of the sliver, thereby ensuring the yarn quality of the blended yarn, among which poly Aryl ester fiber has excellent mechanical properties, the fiber itself has a high modulus, and the breaking strength of the original silk staple fiber is above 9.0cN / dtex, while the breaking strength of the fiber after anaerobic high-temperature heat treatment can be as high as 25-28cN / dtex, Polyarylate fiber has good heat resistance and can maintain excellent physical and mechanical properties for a long time in a high temperature environment. Due to its own supramolecular structure, polyarylate fiber has self-flame retardancy, good flame-retardant effect, and no molten droplets when burning. fall, self-extinguishing without the flame

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