Special high-flowability resin for polypropylene fibers and preparation method thereof

Abstract

The invention discloses a special high-flowability resin for polypropylene fibers. The resin is mainly prepared from a homopolymer polypropylene resin, organic peroxides, an antioxidant and processing aids. On the basis of the mass of the homopolymer polypropylene resin, the mass ratio of the homopolymer polypropylene resin to the organic peroxides is 100:(0.04-0.12), the mass ratio of the homopolymer polypropylene resin to the antioxidant is 100:(0.10-0.25), and the mass ratio of the homopolymer polypropylene resin to the processing aids is 100:(0.05-0.15). The special high-flowability resin for polypropylene fibers has the advantages of high melt index, narrow molecular weight distribution, excellent mechanical properties, higher elongation at break, low ash content, favorable chroma and other favorable fiber forming properties.

Description

technical field [0001] The invention relates to a polypropylene resin, in particular to a high-fluidity polypropylene fiber special resin, and at the same time, the invention also relates to a preparation method of the polypropylene fiber special resin. Background technique [0002] Fiber is the fourth largest consumption field of polypropylene resin. Polypropylene fiber is a kind of fiber product made of polypropylene through melt spinning. Because polypropylene fiber has light weight, non-toxicity, wear resistance, water repellency, Dirt-resistant, easy to wash and dry, heat insulation and other advantages, it is widely used in many fields such as industry, agriculture, packaging, household, medical, etc. It is the fastest growing variety of synthetic fibers in recent years, and has become the second only to polyester. Two major synthetic fiber products. According to the classification of fiber form, polypropylene fiber can be divided into flat yarn, filament, staple fibe...

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Problems solved by technology

[0005] Although there are reports of special resins for high-fluidity polypropylene fibers in China, the quality of the products has problems such as large fluctuations in melt index, wide molecular weight distribution, poor stability, high impurity content, and severe filament breakage and parallel filaments when producing thin products. , can only be used in industrial cloth and low-end disposable diapers, while the raw materials required for the production of high-grade polypropylene fiber products such as fine denier, ultra-fine denier, and thin fiber products mainly rely on imports

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