1, first of all , because the car silicone sealing strip needs to be high temperature resistance, in the high temperature of 280 ℃, the use of silicone material sealing strip weather resistance is very good. And in -40 ℃ low temperature experiment, silicone sealing strip does not harden, not brittle, still remain soft and good adhesion of the strip, which shows the excellent cold resistance of silicone material.
2, second , silicone material to do the sealing strip has permanent softness and elasticity, through the formula adjustment, improve the softness of the sealant after drying, so that it is in the sheet metal and the adhesive strip between the formation of a good sealing layer to ensure that the sealant is easy to peel off from the metal sheet metal, without contamination of the sheet metal.
3, in short , silicone sealant cold and high temperature, chemical stability, good sealing performance, environmental protection and safety, good insulation, compression deformation is small, strong elasticity, anti-aging resistance, anti-impact, shockproof and waterproof, and can be adapted to various types of smooth surface materials for long time without falling off.
Expanding knowledge
Silicone rubber and rubber introduction
Silicone rubber is a highly reactive adsorbent material, amorphous material, its chemical molecular formula mSiO2-nH2O. insoluble in water and any solvent, non-toxic, tasteless, chemically stable, in addition to strong alkali, hydrofluoric acid, not to be used as a substitute. Its chemical molecular formula is mSiO2-nH2O. It is insoluble in water and any solvents, non-toxic, odorless, chemically stable, and does not react with any substances except strong alkali and hydrofluoric acid. Various models of silica gel have different microporous structures due to different manufacturing methods. The chemical composition and physical structure of silica gel determine that it has many other similar materials are difficult to replace the characteristics: high adsorption performance, good thermal stability, chemical stability, high mechanical strength. Silicone according to the size of its pore size is divided into: large pore silica gel, coarse pore silica gel, B-type silica gel, fine pore silica gel.
Rubber is extracted from the latex of rubber trees, rubber grass and other plants, processed and made of elastic, insulating, impervious to water and air. Highly elastic polymer compounds. Divided into natural rubber and synthetic rubber two kinds. Natural rubber is extracted from rubber trees, rubber grass and other plants after processing made of gum; synthetic rubber by a variety of monomers by the polymerization reaction and get. Rubber products are widely used in all aspects of industry or life.
Silicone rubber seals and rubber seals difference
Silicone rubber seals and rubber seals, although only one word difference, but they are not the same.
From the point of view of the composition: silicone rubber is a highly active adsorption material, is an amorphous substance; and rubber is a kind of extraction of rubber tree, rubber grass and other plants latex.
From the point of view of the use: silicone colorless and tasteless, high temperature resistance, health and safety, can be used in medical equipment, silicone with fire is not point, while the rubber extension is good, but does not resist high temperature, there is a very heavy odor, a little bit of fire on the fire, the use of the largest number of automobile tires and general equipment, such as sealing rings.
The above is what I shared today, I hope it can help you.