Method for processing modified polypropylene bristle filaments for net mesh

Abstract

The invention provides a method for processing modified polypropylene bristle filaments for a net mesh, which relates to a method for preparing matrix fibers for a net mesh. The method adopts a stirrer, an extruder, a drawing machine, a filament roller and a filament separator. The method is characterized by comprising the following steps of: mixing PP resin, UHMWPE resin, zinc stearate and auxiliary agent uniformly, stirring the mixture uniformly, extruding and granulating the uniformly stirred mixture through the extruder to obtain mixed granules; melting and extruding the mixed granules through the extruder, pre-drawing the melted and extruded primary filaments, and thermally drawing the pre-drawn filaments twice, wherein a secondary drawing hot oil bath uses ethylene glycol as a drawing heating medium and the total magnification of the pre-drawn filaments is controlled to be between 8.46 and 8.78 through twice thermal drawing; removing oil by adopting high-pressure airflow, then quickly cooling the drawn filaments, and rolling the modified PP bristle filament beams by using the filament roller; and separating the bristle filament beams into the modified PP bristle filaments through the filament separator under the filament separation tension of between 3.2 and 4.0N. The method is used for the production of the modified polypropylene bristle filaments.

Description

technical field [0001] The invention relates to a method for preparing a matrix fiber for mesh in the technical field of aquatic products. Background technique [0002] The net is an important material for making nets in the field of agricultural science and fishery technology. The wear resistance of the matrix fiber material and the strength of the knot are directly related to the energy consumption, safety and service life of the nets. The base fiber material for mesh can be classified into polyamide (PA) fiber, polyethylene (PE) fiber and polypropylene (PP) fiber according to material classification. [0003] In the field of aquatic technology, thicker synthetic fiber monofilaments (0.08-2 mm in diameter) are called bristles. Therefore, PP monofilaments with a diameter of 0.08-2 mm are also called PP bristles, which are different from clothing and decoration. PP fibers are used in technical fields such as geotextiles and geotextiles. [0004] The wear resistance, knot s...

AI Technical Summary

Problems solved by technology

PP bristles for mesh processing are generally made of ordinary PP resin by hot water stretching. They have defects such as deviation of wear resistance and small knot strength, which further lead to the PP mesh processed with them in the production of nets. Fishing accidents such as wear or twisting are prone to occur during medium and long periods of time, and their adaptability to the aquatic field is poor, and it is difficult to meet the special needs of production in the field of aquatic technology