Silica gel is a kind of highly active adsorption material, which belongs to amorphous material. Its chemical formula is msio2? NH2O. Insoluble in water and any solvent, non-toxic and tasteless, stable in chemical properties, no reaction with any substance except strong base and hydrofluoric acid. Different types 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 characteristics that can not be replaced by other similar materials: high adsorption performance, good thermal stability, chemical stability, high mechanical strength, etc.
Silica gel raw materials can also be called mold silica rubber, pad silica gel, hand silica gel, etc.
Silica gel can be divided into: macroporous silica gel, macroporous silica gel, B-type silica gel and microporous silica gel according to its pore size. Because of the different pore structure, their adsorption properties have their own characteristics. In the case of high relative humidity, the adsorption capacity of macroporous silica gel is higher than that of macroporous silica gel, while in the case of low relative humidity, the adsorption capacity of B-type silica gel is also between macroporous silica gel and macroporous silica gel due to its pore structure. Macroporous silica gel is generally used as catalyst carrier, matting agent, toothpaste abrasive, etc. Therefore, different varieties should be selected according to different purposes. After absorbing water, silica gel can be regenerated by insolation, baking and air drying.
Safety performance:
Silica gel is mainly composed of silica, which has stable chemical properties and is non-toxic. Silica gel has a strong adsorption capacity and can dry human skin. If silica gel enters the eye, wash it with plenty of water and seek medical treatment as soon as possible.
Because blue silica gel contains a small amount of cobalt chloride, which is toxic, it should avoid contact with food and inhalation. In case of poisoning, seek medical treatment immediately.
As silica gel is more and more accepted by people, the application neighborhood of silica gel is better and more, and people's demand for silica gel raw materials is also growing. In the future, the market demand for silica gel raw materials is very optimistic, because silica gel is a weak cycle industry, and the total demand is predictable. In foreign countries, many industries now use silica gel, in China, the whole Guangdong Province The consumption accounts for more than 80% of the total national consumption, and may increase in the future!
The advantages of silica gel are gradually discovered, instead of many other materials in our daily life. The magic of silica gel and silicone rubber materials is changing our life. From the product classification, application characteristics and precautions of silica gel, silicone rubber raw materials and liquid silicone rubber raw materials, there will be their own differences. The application technology and main applications of silica gel raw materials and liquid silicone rubber raw materials are well known. We can find, research and explore more. Understand silica gel, only to better understand yourself!
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