In the wonderful world of materials science, high-temperature vulcanized silicone rubber is widely used in many fields such as aerospace, electronics and electrical, automotive industry, etc. due to its excellent performance. In terms of improving the strength and wear resistance of high-temperature vulcanized silicone rubber, silicon dioxide plays a crucial role and can be called the "hero behind the scenes". Today, let's delve into its unique function together.

Silicon dioxide, with the chemical formula SiO2, is an extremely common inorganic compound. It is widely found in nature, from fine sand on beaches to quartz ore. After special processing, it has become an important reinforcing filler for high-temperature vulcanized silicone rubber.

Silicon dioxide has high specific surface area and high activity properties, just like having countless "little hooks". When it is added to high-temperature vulcanized silicone rubber, these "small hooks" can produce strong physical adsorption and chemical bonding with the molecular chains of silicone rubber. When silicone rubber is subjected to external forces, silicon dioxide particles can uniformly disperse stress. Imagine that silicone rubber is a large mesh, and silicon dioxide is the sturdy anchor points distributed on the mesh. When an external force pulls on the mesh, the anchor points disperse the force, avoiding stress concentration in one area and preventing premature breakage of rubber molecular chains, greatly improving the tensile strength and tear strength of silicone rubber.

Silicon dioxide particles in silicone rubber are like engineers building bridges, connecting the molecular chains of silicone rubber to form a three-dimensional network structure. This network structure limits the relative sliding of molecular chains, allowing silicone rubber to better maintain its shape and structural integrity under stress. Just like the steel bars in reinforced concrete provide support and strength for the concrete, the network structure constructed by silica greatly enhances the overall strength of silicone rubber.

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