High-intensity fire-proof cable insulating material and preparation method of high-intensity fire-proof cable insulating material

Abstract

The invention discloses a high-intensity fire-proof cable insulating material comprising the following ingredients according to part by weight: 100 parts of methyl vinyl silicone rubber, 4-6 parts of glass powder, 10-20 parts of kieselguhr, 25-35 parts of mica powder, 5-15 parts of talcum powder, 3-5 parts of ferric oxide powder, 10-20 parts of kaoline, 25-35 parts of white carbon black, 4-6 parts of chloroplatinic acid and 1-3 parts of zinc oxide. The invention also discloses a preparation method of the high-intensity fire-proof cable insulating material, roller spacing and corresponding temperature can be adjusted, the methyl vinyl silicone rubber is rolled and pressed by an open mill, and then the white carbon black, the mica powder, the glass powder, the kieselguhr, the talcum powder and the kaoline are added in sequence for mixing, and then the roller spacing is adjusted for 2-3min, the ferric oxide powder, the chloroplatinic acid and the zinc oxide are added for mixing, and then the mixture is sheeted and cooled. The cable insulating material has low cost, porcelainized and fire-proof performances, and the like.

Description

technical field [0001] The invention relates to a cable insulating material, in particular to a high-strength fire-resistant cable insulating material. Background technique [0002] Fireproof (fire-resistant) cable refers to a type of cable that can ensure the integrity of the line in the event of a fire; this kind of cable can ensure that the cable can continue to provide power and transmit various signals normally for a long time when the fire is at high temperature, so that Provide protection for fire control and lifesaving; especially for theaters, subways, airports, nuclear power plants and other crowded public places or important places. [0003] According to the different refractory materials used, the existing fire-resistant cables are divided into mica tape fire-resistant cables and mineral insulated fire-resistant cables. These two types of fire-resistant cables can both meet Class A (test temperature 950°C-1000°C) fire-resistant standards to ensure the integrity ...

AI Technical Summary

Problems solved by technology

The refractory insulating material used for cables is easy to form molten droplets at medium and low temperature (500°C), which will cause the cable insulation layer to become soft and reduce its strength, which will seriously cause partial rupture of the insulation layer and lead to short circuit. The inner diameter of the insulation layer changes, and a burst or open circuit occurs