Method for preparing modified polypropylene monofilaments for processing small-size fishing rope

Abstract

The invention discloses a method for preparing modified polypropylene monofilaments for processing a small-size fishing rope, relates to a method for preparing monofilaments for a small-size fishing rope and aims to provide a method for preparing the modified polypropylene monofilaments for processing the small-size fishing rope. A stirring machine, a single-screw extruder, a twice-drafting electrical heating drafting machine, a filament winding machine and a filament separating machine are adopted. The method is characterized by comprising the following steps of: mixing a sieved spinning-grade dry T30P type resin, a dry VERSIFYTM 6002 elastomer and a turpentine aid; uniformly mixing the materials to obtain a PP / VERSIFYTM 6002 elastomer blend; fusing and extruding the blend by using the single-screw extruder; cooling and pre-drafting the fused and extruded primary filaments, thermally drafting the pre-drafted filaments twice, rapidly cooling the thermally-drafted filaments from which oil is removed with high-pressure air current and winding modified PP monofilaments by using the winding machine; and separating the modified PP monofilaments into the modified polypropylene monofilaments for processing the small-size fishing rope under filament separating tension by using the filament separating machine.

Description

technical field [0001] The invention relates to a method for preparing polypropylene monofilaments for fishing ropes in aquatic technology. Background technique [0002] According to the scope of use, ropes can generally be divided into fishing ropes, military ropes, transportation ropes and forestry ropes; and fishing ropes can generally be divided into small specifications according to specifications (4.0mm≤Φ<12.0mm, Φ is the diameter of the rope) Ropes, medium-sized (12.0mm≤Φ≤20.0mm) ropes and large-sized (Φ>20mm) ropes, etc. Fishing small-size ropes are widely used in fishing gear or net cages in the field of agricultural science and aquatic technology, and their performance is directly related to the safety and production effect of fishing gear or net cages after assembly. Polypropylene (PP) monofilament is one of the matrix fiber materials used in the processing of small-sized fishing ropes in the field of agricultural science and aquatic products. People have s...

AI Technical Summary

Problems solved by technology

Polypropylene (PP) monofilament is one of the matrix fiber materials used in the processing of small-sized fishing ropes in the field of agricultural science and aquatic products. People have special requirements for its roundness, elongation, wear resistance and breaking strength. In order to prepare PP monofilaments for fishery small-size rope processing with good comprehensive performance, only the advanced wire drawing process can be prepared. Defects such as low wire drawing strength and poor wear resistance will further affect the strength and service life of the monofilament and its downstream rope products, making the ropes prepared with them prone to production accidents in the fishery and difficult to meet the requirements of fishery production. need