Novel preparation method of ceramized organic silicon resin

Abstract

The invention provides a novel preparation method of ceramized organic silicon resin. The novel preparation method comprises the following steps: (1) preparing solvent-free vinyl MDTQ silicon resin; (2) preparing base rubber; (3) adding 1 to 5 weight parts of hydrogen-containing silicone oil with 0.2 to 1 percent of hydrogen and 0.1 to 0.5 weight part of an inhibitor into 100 weight parts of the base rubber, kneading the materials in a kneading machine for 1 to 2 hours, then carrying out grinding on a three-roller machine for 2 to 3 times, and carrying out discharging and packaging, thereby obtaining a component A; (4) adding 0.04 to 1 weight part of a platinum complex catalyst into 100 weight parts of the base rubber, kneading the materials in the kneading machine for 1 to 2 hours, then carrying out grinding on the three-roller machine for 2 to 3 times, and carrying out discharging and packaging, thereby obtaining a component B. The organic silicon resin prepared through the preparation method disclosed by the invention is high in adhesion force to a base material, and is difficult to deform or strip during twisting or stretching; furthermore, the ceramized organic silicon resin can be subjected to scrape coating without being diluted through methylbenzene or xylene, and is high in flame retardancy and self-extinguishing performance.

Description

technical field [0001] The invention relates to the technical field of organosilicon chemistry and materials, in particular to a method for preparing a novel ceramic organosilicon resin. Background technique [0002] The ceramic refractory silicone insulating tape currently on the market, the ceramic mica wrapping tape is made of vinyl silicone rubber or vinyl mixing silicone rubber and silicone oil, white carbon black, vitrified powder, etc., and other additives, after mixing Finally, it is made by adding vulcanizing agent on the open mill. After the ceramic silicone rubber made by this method is molded or extruded or scraped and vulcanized at high temperature to make a finished product, it has the following disadvantages: [0003] 1. The ceramic silicone rubber is based on silicone rubber or vinyl mixed silicone rubber. Since the surface tension of silicone rubber and compounded silicone rubber is very small, the adhesion between the vulcanized ceramic silicone rubber an...

AI Technical Summary

Problems solved by technology

[0004] 2. In order to ensure the strength of the vulcanized product, the molecular weight is made very large, which is only suitable for extrusion and molding vulcanization. If the coating thickness is required to be less than 0.5 mm, it needs to be diluted with toluene or xylene before scraping.

[0005] 3. Silicone rubber is a two-functional high polymer with poor flame retardancy and self-extinguishing property. It is easy to burn under open flame, and it is difficult to self-extinguish after leaving the fire source after burning.

[0006] 4. The existing technology is cross-linked and cured with peroxide as the vulcanizing agent. After vulcanization, the surface is prone to stickiness, and the depth of vulcanization is not enough, which will reduce the strength, flame retardancy and self-extinguishing property of the finished product.