Silicone rubber has excellent heat resistance, cold resistance, dielectric properties, ozone resistance and atmospheric aging resistance. The outstanding performance of silicon rubber is its wide use temperature, which can be used at -60°C (or lower temperature) to +250 ℃ (or higher temperature) for long-term use. At present, foamed silica gel is widely used in high-temperature parts in automobiles, aerospace, computers, fax machines, and printers due to its stable chemical properties, high adsorption performance, high mechanical strength, and good thermal stability; kitchen appliances, home appliances and other equipment middle.