Preparation method of modified polypropylene bristle monofilament for rope of aquaculture net cage or trawl fishing tool

Abstract

The invention provides a preparation method of a modified polypropylene bristle monofilament for a rope of an aquaculture net cage or a trawl fishing tool, relating to a base fiber for the rope of the aquaculture net cage or the trawl fishing tool and the preparation method of the modified polypropylene bristle monofilament for the rope of the aquaculture net cage or the trawl fishing tool. The method adopts a stirring machine, a screw rod extruding machine, a drawing machine, a bristle monofilament rolling machine and a bristle monofilament dividing machine. The preparation method is characterized by comprising the following steps of: completely and evenly stirring PP resin, PA1010 resin, PP-G-MAH resin, zinc stearate and assistant; extruding and pelleting the evenly-stirred mixture to obtain multi-component mixture granules; fusing and extruding the multi-component mixture granules through a charging barrel of the single-screw rod extruding machine; hot drawing the fused and extruded primary monofilament for twice; removing oil by means of pressure air current after drawing, and fast cooling; and rolling the bristle monofilament with the bristle monofilament rolling machine, and dividing the bristle monofilament with the bristle monofilament dividing machine to obtain the modified PP bristle monofilament. The method is suitable for preparing the modified polypropylene bristle.

Description

technical field [0001] The invention relates to a method for preparing a matrix fiber for aquaculture cages or trawl fishing gear wires. Background technique [0002] Wires are widely used in aquaculture cages or trawl fishing gear in the field of aquatic technology, and the performance of the matrix fiber material for processing is directly related to the safety of wires, cages and fishing gear. The base fibers used in breeding cages or trawl fishing gear are classified according to their functions, and are generally divided into ordinary fibers, high-performance fibers, high-strength fibers, wear-resistant fibers and durable fibers; Polyamide (PE) fiber and nylon (PA) multifilament. [0003] Thicker synthetic fiber monofilaments (0.08-2 mm in diameter) are called bristles. Therefore, polypropylene monofilaments with a diameter of 0.08-2 mm are called PP bristles in the field of aquatic technology. As a flexible structural material for net cages or fishing gear, wire rope...

AI Technical Summary

Problems solved by technology

[0004] The existing breeding cages or trawl fishing gear ropes are made of ordinary polypropylene fiber and PP resin as raw material by hot water stretching. They have defects such as small knot strength, low extensibility, and poor wear resistance, which lead to Fishery production accidents are prone to occur in the operation of polypropylene rope