by ZhinanZhang on Jul 21, 2021
Silica gel alias: Silicic acid gel, is a highly active adsorption material. The main component is silica, which is chemically stable and does not burn.
In 1940, Dr. Eugene RoChow made a major breakthrough in technology research and development. It was the first elemental polymer used in the industrial field. It has been widely used and developed due to its environmental protection characteristics.
The main component of silica gel is silica, which is chemically stable and does not burn. Silica gel has a strong adsorption capacity and can have a drying effect on human skin.
Heat resistance, cold resistance, dielectric resistance, ozone resistance and atmospheric aging resistance. The outstanding performance of silicone rubber is the wide use temperature, which can be at -60 ℃ (or lower temperature) to +250 ℃ (or higher temperature) for long-term use.
1.Temperature resistance characteristics
Silicone products have high thermal stability, and the chemical bonds of molecules will not break or decompose under high temperature (or radiation exposure). Silicone is not only resistant to high temperature, but also resistant to low temperature, and can be used in a wide temperature range. Whether it is chemical properties or physical mechanical properties, the change with temperature is very small.
Silicone products are not easily decomposed by ultraviolet light and ozone. Silicone has better thermal stability, radiation resistance and weather resistance than other polymer materials. The life span of silicone in natural environment can reach several decades.
3.Electrical insulation performance
Silicone products have good electrical insulation properties, and electrical properties are little affected by temperature and frequency. Therefore, they are a kind of stable electrical insulating materials, which are widely used in the electronics and electrical industries. In addition to excellent heat resistance, silicone also has excellent water repellency, which is a guarantee for high reliability of electrical equipment used in wet conditions.
One of the most inactive compounds. They are very resistant to biological aging, have no rejection reaction with animal bodies, and have good anticoagulant properties.
5.Low surface tension and low surface energy
The surface tension is weak, the surface energy is small, and the film-forming ability is strong. This low surface tension and low surface energy are the main reasons for its various applications: hydrophobicity, defoaming, foam stability, anti-sticking, lubrication, glazing and other excellent properties.
Due to its excellent stable performance, silica gel is being used in more industrial and environmental protection fields.