Irregular polypropylene fiber short fiber for high-efficiency filtering, and spinning method thereof

Abstract

The invention discloses an irregular polypropylene fiber short fiber for high-efficiency filtering. The cross section of the polypropylene fiber short fiber is shaped as any form from the following: C-shaped, circular hollow-shaped, trilobal-shaped, cross-shaped, Chinese character mi-shaped and triangular-shaped, the fineness of the polypropylene fiber short fiber is set from 3.3dtex to 13.2 dtex, the length is from 38mm to 102mm, the irregularity is from 50% to 70%, the strength is greater than 3.0CN / dtex, and the polypropylene fiber short fiber comprises an organosilicon activator with a weight percentage content of 0.6+ / -0.02%. The irregular polypropylene fiber short fiber provided by the invention is a filtering material which is suitable for industrial production and satisfies ever increasing requirements and is dedicated to the field of filtering for improving the pollutant holding quantity.

Description

technical field [0001] The invention relates to spinning technology, in particular to a special-shaped polypropylene staple fiber for high-efficiency filtration and a spinning method thereof. Background technique [0002] The slubbed filter yarn spun by ordinary polypropylene fiber has low filtering effect and precision, high linear density, and small dirt holding capacity, which can no longer meet the needs of the current domestic and foreign markets. Users have put forward higher requirements for slubbed filter yarn. : The cross-sectional shape of polypropylene fiber is profiled and complicated, forming a larger specific surface area, more voids and microporous structures to accommodate impurities and dirt, to meet the pre-conditions for post-spinning yarns. Contents of the invention [0003] Purpose of the invention: The purpose of the invention is to solve the deficiencies in the prior art, and provide a special-shaped polypropylene staple fiber for high-efficiency fil...

AI Technical Summary

Problems solved by technology

[0002] The slubbed filter yarn spun by ordinary polypropylene fiber has low filtering effect and precision, high linear density, and small dirt holding capacity, which can no longer meet the needs of the current domestic and foreign markets. Users have put forward higher requirements for slubbed filter yarn. : The cross-sectional shape of polypropylene fiber is profiled and complicated, forming a larger specific surface area, more voids and microporous structures to accommodate impurities and dirt, to meet the pre-conditions of post-spinning yarns

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