Liquid crystal ultrahigh molecular polyethylene composite material

Abstract

The invention relates to a liquid crystal ultrahigh molecular polyethylene composite material, and belongs to the technical field of high molecular materials. The liquid crystal ultrahigh molecular polyethylene composite material is prepared from 70.5-88.5wt% of ultrahigh molecular weight polyethylene, 8-26wt% of liquid crystal high-molecular polymer, 2.5wt% of superfine graphite and 1wt% of calcium stearate at a mass ratio. The raw materials in the proportions are input into a blending machine to stir for 50-60 minutes; and a powder material is put into a mould for mould pressing and sintering at 280-300 DEG C to prepare the liquid crystal ultrahigh molecular polyethylene modified composite material. By using the liquid crystal ultrahigh molecular polyethylene modified composite material prepared from the formulas, under the condition of keeping the original high performance of the ultrahigh molecular polyethylene product, the comprehensive performance is improved, the softening temperature reaches 110 DEG C, the tensile strength is 35 MPa, the abrasion loss is 0.08mg, and the shore hardness is 68-72 gram force.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a lining material of a material conveying system. Background technique [0002] Ultra-high molecular weight polyethylene (UHMWPE) products currently on the market are pure polymer materials. Although ultra-high molecular weight polyethylene has comprehensive excellent properties, it still has its shortcomings, such as low surface hardness and high temperature resistance. Performance and poor abrasive wear resistance and other defects. [0003] Most of the UHMWPE products on the market now are produced by putting raw materials into a press for sintering and pressing, which can only maintain the properties of the UHMWPE product itself. In the production process of ultra-high molecular polyethylene products, without adding any formula, the products produced have a heat distortion temperature of 80°C, a tensile strength of 23.7MPa, an abrasion loss of 0.15mg, a...

AI Technical Summary

Problems solved by technology

[0002] Ultra-high molecular weight polyethylene (UHMWPE) products currently on the market are pure polymer materials. Although ultra-high molecular weight polyethylene has comprehensive excellent properties, it still has its shortcomings, such as low surface hardness and high temperature resistance. Defects such as poor performance and abrasive wear resistance

[0003] Most of the UHMWPE products on the market now are produced by putting the raw materials into the press for sintering and pressing, which can only maintain the performance of the UHMWPE product itself.