A semi-hard heat-shrinkable material and a method for manufacturing an integral semi-hard heat-shrinkable umbrella skirt sleeve for high-speed train roof cables

Abstract

The present invention relates to a semi-hard heat-shrinkable material and a method for manufacturing an integral semi-hard heat-shrinkable shed shed sleeve used for high-speed train roof cables, and is characterized in that the semi-hard heat-shrinkable material includes the following materials: polyethylene , ethylene vinyl acetate copolymer, EPDM rubber, silicone rubber, filler, lubricant, antioxidant, sensitizing crosslinking agent, light stabilizer, peroxide crosslinking agent. The method for manufacturing the integrated semi-rigid heat-shrinkable shed shed sleeve for high-speed train roof cables includes masterbatch processing, vulcanization and vacuum expansion. Combining the advantages of the semi-hard material of the radiation cross-linked heat-shrinkable shed sleeve and the overall processing of the silicone rubber cold-shrinkable sleeve, it has good heat shrinkage, mechanical, electrical, flame retardant, corrosion resistance, salt spray resistance, and solvent resistance. Performance, in line with the technical requirements of cable accessories for high-speed train roof, its safety performance and stability are better. Therefore, it has great practical and popularization value.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to a high-speed train roof cable accessory material, which is a semi-hard heat-shrinkable material and a method for manufacturing an integral semi-hard heat-shrinkable shed shed sleeve for high-speed train roof cables. Background technique [0002] High-speed rail coaches are powered by electricity, which receives current through cables on the roof. The heat-shrinkable shed sleeve is applied to the installation of the roof cable to meet the needs of high-speed rail passenger cars (high-speed rail, bullet train, urban rail, subway) and other transportation equipment. There are two types of shed sleeves in the prior art, one is radiation cross-linked heat-shrinkable shed and sleeve, although the material is semi-hard, but due to the limitation of processing technology, it can only be a two-body structure of shed and sleeve , the installation mainly relies on hot melt adhesive for b...

AI Technical Summary

Problems solved by technology

There are two types of shed sleeves in the prior art, one is radiation cross-linked heat-shrinkable shed and sleeve, although the material is semi-hard, but due to the limitation of processing technology, it can only be a two-body structure of shed and sleeve , the installation mainly relies on hot melt adhesive for bonding, and the umbrella skirt is easy to fall off when the train is running at high speed; the other is the silicone rubber cold shrinkable umbrella skirt sleeve. Although the umbrella skirt and the sleeve are integrated, the material is soft and wear-resistant poor performance, easy to break, the above two can not well meet the actual needs of high-speed train operation