Organic silicone adhesives with pure silicone resin as the main material are generally made with xylene as the solvent and added with inorganic fillers such as asbestos powder, mica powder, titanium dioxide and zinc oxide. It cross-links, polymerizes and cures at high temperature (270 °C), has excellent high-temperature resistance, can be used for a long time at 400 °C, and is suitable for non-structural bonding and sealing at high temperatures.
Pure silicone resin adhesives are inconvenient to use due to their high curing temperature and have low bonding strength, so they can only be used as non-structural adhesives. By using the -OH in epoxy, phenolic and polyester resins, which can react with the siloxane in silicone resin to introduce these resins for modification, it is possible to not only maintain the high-temperature resistance of silicone resin adhesives, but also reduce their curing temperature and improve the bonding strength.
Silicone resins can be used for anti-stick sleeves of rollers and are widely used in the textile industry, printing and dyeing industry, paper industry, rubber processing, plastic processing and other fields for anti-stick coatings on various rollers, molds, pipelines, inner walls of engines, food machinery, hoppers of printing machinery, baking pans of frying pans, and anti-rust and lubricating coatings on razor blades, etc. Comparison between fluororesin non-stick coatings and silicone resin non-stick coatings: The former has disadvantages such as high curing temperature, complex construction process, low film gloss and single color, so its application range is limited; silicone resin non-stick coatings have advantages such as relatively low curing temperature, high gloss, variable colors and convenient coating, and are very popular with users in actual construction applications. Of course, fluororesin non-stick coatings have a slight advantage over silicone resin non-stick coatings in terms of non-stickiness.