Method for preparing modified foamed fluoroplastic polymer composite cable

Abstract

The invention discloses a method for preparing a modified foamed fluoroplastic polymer composite cable, comprising the following steps of: (1) preparation of an insulating material: placing organic silicon resin, sodium aluminum silicon titanium glass, magnesium oxide, an anti-aging agent, calcium carbonate, a high-boiling-point plasticizer, an anti-ultraviolet radiation agent and a silane coupling agent WD-50 which are weighed proportionally in an internal mixer; uniformly stirring and mixing the previous materials for 2 to 3 hours to form mixed rubber; before mixing, performing high-temperature processing on the assistant agents which are liable to absorb moisture such as magnesia and calcium carbonate; after the internal mixer mixes the mixed rubber, enabling a single-screw extrusion molding machine to perform extrusion molding at an extrusion temperature of 120 to 130 degrees centigrade; and obtaining a solid A in a baking oven after the extrusion. The preparation method improves the original defects of the composite material by vulcanizing the cable material, enhances the wear resistance, swelling resistance and heat resistance of the cable. The high-temperature processing agent can reduce air bubbles in the vulcanized rubber and improves the quality of the cable before the mixing.

Description

[0001] The invention relates to the field of cable preparation, in particular to a preparation method of modified foamed fluoroplastic polymer composite cable. Background technique [0002] The cable is usually a rope-like cable twisted by several or several groups of wires. Each group of wires is insulated from each other and is often twisted around a center. The entire outside is covered with a highly insulating covering layer. It is commonly used in the system. Fluoroplastics have excellent chemical stability and chemical corrosion resistance, and have fire resistance, high temperature resistance, and flame retardancy. Therefore, they are widely used in the wire and cable industry. [0003] During the preparation process of the existing foamed fluoroplastic polymer composite cables, water in the auxiliary agent, decomposition of the crosslinking agent or volatilization of the plasticizer may easily lead to bubbles in the material obtained by mixing, which affects the quality...

AI Technical Summary

Problems solved by technology

[0003] During the preparation process of the existing foamed fluoroplastic polymer composite cables, water in the auxiliary agent, decomposition of the crosslinking agent or volatilization of the plasticizer may easily lead to bubbles in the material obtained by mixing, which affects the quality of the insulating layer and thus affects the quality of the cable. At the same time, the wear resistance and anti-swelling effect of the cable are not good, which affects the quality of the cable