A high temperature resistant and expandable protective sleeve and its preparation method

Abstract

The invention discloses a high temperature resistant and expandable protective sleeve, which is braided by a plurality of twisted fiber strands through a braiding machine; the twisted fiber strands are formed by plying a plurality of twisted fibers, and the twisted fiber strands It is formed by twisting a plurality of multifilament fibers; the multifilament fibers are aramid fibers; and the multifilament fibers are impregnated with an impregnating agent. The invention also discloses a preparation method of a high-temperature-resistant and expandable protective sleeve, which includes: multifilament fiber processing steps, twisting steps, plying steps, braiding steps, and heating and setting steps. The protective sleeve of the present invention has the characteristics of high temperature resistance, light weight, thin thickness, good flexibility, high mechanical breaking force and expandability. It can cover almost all wire harnesses with only a few specifications, and is light in weight. It is easy to select and install, waterproof and oil-proof, and can guarantee excellent performance even if it is used for mechanical and environmental protection of wire harnesses in harsh working conditions.

Description

technical field [0001] The invention relates to a protective sleeve, in particular to a high temperature resistant expandable protective sleeve and a preparation method thereof. Background technique [0002] Conventional closed-end mechanical protective casing products are woven from ordinary non-metallic materials and are widely used in the occasions where wires, cables and wiring harnesses need to be protected, such as computer peripherals, automobile industry, and equipment interiors. Mechanical protective sleeves used in aerospace will have higher requirements. Conventional casing products are generally not resistant to high and low temperatures, heavy in weight, insufficient to withstand external mechanical capabilities, and not resistant to cutting and friction, especially when used in harsh environments. Without expansion and telescopic features, several specifications are required to match the selection of wire harness products, resulting in a wide variety, which is...

AI Technical Summary

Problems solved by technology

Conventional casing products are generally not resistant to high and low temperatures, heavy in weight, insufficient to withstand external mechanical capabilities, not resistant to cutting and friction, especially in harsh environments

Without expansion and telescopic features, several specifications are required to match the selection of wire harness products, resulting in a wide variety, which is not suitable for product selection and installation

Especially in the field of aerospace, there are often problems such as reduced service life, which greatly increases its use cost, which is not conducive to model selection, maintenance and replacement