High-density fireproof silicone adhesive and preparation process thereof

Abstract

The invention discloses high-density fireproof silicone adhesive and a preparation process thereof. The silicone adhesive is prepared from the following raw materials in parts by weight: 95-108 partsof base adhesive, 0-30 parts of plasticizer, 50-300 parts of scale-like powder, 0-150 parts of unreinforced powder, 0-100 parts of reinforced filler, 0.01-20 parts of crosslinker, 0-5 parts of couplerand 0.0001-10 parts of catalyst. The high-density fireproof silicone adhesive uses the scale-like powder which has the characteristics of high temperature resistance, acid and alkali resistance and low vapor transmittance and can form a laminated state by different flakes after proper addition amount is achieved, and the aim of retarding flame can be achieved by stopping transmittance of high temperature or flame; under the combined effect of the scale-like powder and other raw materials, the high-density fireproof silicone adhesive has excellent radiation resistance and fireproofing performance without flame-retardant powder or metal powder, and has low production cost and wide application prospect.

Description

technical field [0001] The invention relates to the field of rubber, in particular to a high-density fireproof silicone rubber. Background technique [0002] As people's lives become more and more intelligent, people's demand for electricity is also increasing, and there are more and more power plants, more and more substations, and they are getting closer to people's gathering areas. There are more and more electromagnetic ionizing radiation, and people have higher and higher requirements for fire prevention and radiation protection. [0003] Fireproof silicone rubber is a commonly used anti-radiation material. It uses zinc borate, magnesium hydroxide, aluminum hydroxide, nitrogen, phosphorus, nitrogen-phosphorus composite, halogen-containing flame retardants, antimony-based flame retardants, Rare oxides, etc., alone or combined with several kinds of flame retardant powders, through the decomposition of flame retardants to generate water vapor, carbon dioxide, non-combusti...

AI Technical Summary

Problems solved by technology

[0004] Although the existing fire-resistant silicone rubber can meet the fire-proof requirements through flame-retardant powder, it has disadvantages such as not being environmentally friendly, having poor temperature resistance, poor acid and alkali resistance, producing toxic gases or solids when decomposed, and being expensive; The powder is easily oxidized into bulky oxides, which affects the performance of silicone rubber, or is highly toxic and expensive, which brings inconvenience to people's use.