Silica gel is a highly active adsorbent material, which is an amorphous substance. Its chemical formula is mSiO2? nH2O. It is insoluble in water and any solvent, non-toxic and tasteless, chemically stable, and does not react with any substance except strong alkali and hydrofluoric acid. Various types of silica gels have different microporous structures due to their different manufacturing methods. The chemical composition and physical structure of silica gel determine that it has many other similar materials that are difficult to replace: high adsorption performance, good thermal stability, stable chemical properties, and high mechanical strength.
Silicone raw materials can also be called mold silicone rubber, pad printing silicone, hand board silica gel and so on.
Silica gel is classified according to its pore size: macroporous silica gel, coarse pore silica gel, B-type silica gel, and fine pore silica gel. Due to the different pore structure, their adsorption properties are different. The coarse pore silica gel has a higher adsorption amount in the case of high relative humidity, and the fine pore silica gel has a higher adsorption amount than the coarse pore silica gel in the case of a relatively low relative humidity, and the B type silica gel has a pore structure in the coarse and fine pores. Between silica gel, the amount of adsorption is also between coarse and fine pores. Macroporous silica gel is generally used as a catalyst carrier, a matting agent, a toothpaste abrasive, and the like. Therefore, different varieties should be selected according to different uses. After the silica gel adsorbs moisture, it can be regenerated by exposure, baking, air drying, and the like.
Safety performance:
The main component of silica gel is silica, which is chemically stable and non-toxic. Silica gel has a strong adsorption capacity and can cause dryness on human skin. If the silicone enters the eye, rinse with plenty of water and seek medical attention as soon as possible.
Blue silica gel is toxic due to the small amount of cobalt chloride. Avoid contact with food and inhalation. If a poisoning event occurs, seek medical attention immediately.
As silica gel is more and more accepted, the application of silica gel is better and the demand for silicone raw materials is increasing. The demand for silica gel raw materials in the future is very optimistic, because silica gel is a In the weak cycle industry, the sum of demand is conceivable. In foreign countries, silica gel is used in many industries. In China, the total amount of silica gel in Guangdong Province accounts for more than 80% of the total national consumption, and may increase in the future!
The advantages of silica gel have gradually been discovered, replacing many other materials in our daily life. The magic of silicone and silicone rubber materials is changing our lives. From the classification of silica gel, silicone rubber raw materials, liquid silicone rubber raw materials, application characteristics and precautions, there will be different differences. The application technology and main application of silicone raw materials, liquid silicone rubber raw materials are well known, we can have more More to discover, research and explore. Learn about silicone, just to better understand yourself!