Superhigh molecular weight polyethylene monofilament and hot drawing processing method thereof

Abstract

The invention discloses a superhigh molecular weight polyethylene monofilament and a hot drawing processing method thereof. Raw materials of the polyethylene monofilament comprise superhigh molecular weight polyethylene resin, polyethylene wax, a plasticizer and an antioxidant which are manufactured into a round-strip-shaped filament. The hot tensile processing method comprises the following steps of: taking the raw materials by weight ratios for later use; mixing the raw materials and putting the mixed raw materials into a single screw extruder for extruding a pipe; mounting a cutting cutter on the lower part of the single screw extruder to longitudinally split the pipe, and expanding the longitudinally split pipe into a plate type material; calendaring the plate type material to obtain a diaphragm type blank, wherein the diaphragm type blank is drawn when the diaphragm type blank passes through a first heating channel; leading the drawn diaphragm type blank into a heat channel for heating; leading the diaphragm type blank into a calendar to obtain a round-strip-shaped monofilament; leading the round-strip-shaped monofilament into a stretcher for stretching to obtain a semi-finished monofilament, and leading the semi-finished monofilament into the stretcher for stretching to obtain a finished monofilament; and finally, shaping and then rolling. The product processed by using the method has high production efficiency, wherein the diameter of the product is longer than 0.15 millimeter, the tensile strength can reach higher than 600MPa, the elastic modulus reaches higher than 200g / d, and the like.

Description

technical field [0001] The invention relates to a processing method of ultra-high molecular weight polyethylene strips, which is an ultra-high molecular weight polyethylene monofilament and a thermal stretching processing method thereof. Background technique [0002] Ultra-high molecular weight polyethylene fibers are gradually being widely used due to their advantages such as high tensile strength. The production of ultra-high molecular weight polyethylene fibers is relatively difficult. The current method used is gel spinning. The disadvantages of this processing method are: It has high requirements on the processing environment, requires the use of expensive solvents and professional equipment, and the production efficiency is low, which leads to high production costs of ultra-high molecular weight polyethylene yarns and greatly limits the application of ultra-high molecular weight polyethylene yarns. For this reason, many skilled persons in the art have been devoting the...

AI Technical Summary

Problems solved by technology

[0002] Ultra-high molecular weight polyethylene fibers are gradually being widely used due to their advantages such as high tensile strength. The production of ultra-high molecular weight polyethylene fibers is relatively difficult. The current method used is gel spinning. The disadvantages of this processing method are: It has high requirements on the processing environment, requires the use of expensive solvents and professional equipment, and the production efficiency is low, which leads to high production costs of ultra-high molecular weight polyethylene yarns, which greatly restricts the application of ultra-high molecular weight polyethylene yarns

For this reason, many skilled persons in the art have been devoting themselves to researching a manufacturing method capable of reducing the production cost of UHMWPE filaments in recent years, but no new breakthroughs have been made so far.

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