Ceramic silicone rubber and preparation method thereof

Abstract

The invention relates to ceramic silicone rubber. The ceramic silicone rubber is prepared from the following raw materials in parts by weight: 100 parts of silicone rubber, 3-5 parts of zinc oxide, 0.3-0.5 part of stearic acid, 1.0-2.0 parts of p-phenylenediamine, 1-5 parts of paraffin, 0.5-1.5 parts of white carbon black, 40-60 parts of talcum powder, 15 parts of white mica, 1.0 part of zinc borate, 0.8-1 part of a vulcanizing agent DCBP, 32-38 parts of calcium carbonate, 8-12 parts of 38# cylinder oil, 5.5-6.5 parts of dicumyl peroxide, 2-5 parts of aluminum hydroxide and 2-5 parts of magnesium hydroxide. Ceramic silicone rubber provided by the invention can effectively improve shell forming performance and flame and fire resistance of the silicone rubber, can keep the integrity of cables in a fire hazard, and can reduce disasters caused by a fire hazard.

Description

technical field [0001] The invention relates to the technical field of rubber materials, in particular to a vitrified silicone rubber and a preparation method thereof. Background technique [0002] At present, wires and cables must be required to use flame-retardant and fire-resistant rubber insulation and sheaths in key fire-fighting departments such as construction, electric power, vehicles, aircraft, and ships. Ordinary rubber will be completely burned in the fire. In order to prevent flames and self-extinguishing, halogen-containing flame retardants are added to the rubber. Although the effect is very good, a large amount of toxic and corrosive gases are released when burning, accompanied by a large amount of smoke. . After the currently used halogen-free low-smoke flame-retardant silicone rubber is continuously burned at high temperature in a fire, the burnt residue has no mechanical strength and turns into ashes, which cannot maintain the integrity of wires and cables...

AI Technical Summary

Problems solved by technology

Ordinary rubber will be completely burned in the fire. In order to prevent flames and self-extinguishing, halogen-containing flame retardants are added to the rubber. Although the effect is very good, a large amount of toxic and corrosive gases are released when burning, accompanied by a large amount of smoke.

After the currently used halogen-free low-smoke flame-retardant silicone rubber is continuously burned at high temperature in a fire, the burnt residue has no mechanical strength and turns into ashes, which cannot maintain the integrity of wires and cables, and will cause more dangerous secondary disasters, such as short circuits.

Images