1, molded silica gel products, molded silica gel products are usually formed by high-temperature molds, solid silica gel raw materials are added, and vulcanizing agents are added, then pressurized by vulcanizing machines and cured at high temperature. The hardness of molded silica gel is usually 30 C-70 C. The color of raw materials of mixed color paste is adjusted according to Pan Tong color card number, and the shape of mold determines the shape of molded silica gel products, which is the most widely used in silica gel industry.
2. Extrude silica gel products. Extruded silica gel products are usually formed by extruding silica gel through an extruder. The extruded silica gel is generally long and tubular, but its shape is limited, and it is widely used in medical devices and food machinery.
3. Liquid silicone products. Liquid silicone products are made of silicone by injection molding. The product is soft and the hardness can reach10 C-40 C. Because of its soft characteristics, it is widely used to simulate human organs and medical silicone chest pads.
Extended data:
Silica gel to distinguish true from false:
1, feel, silicone products have good toughness and elasticity, are not easily permanently deformed by external forces, and feel smoother, while counterfeit silicone products are easily deformed and feel rough, because there is no oily substance on the surface of counterfeit silicone.
2. In terms of characteristics, silicone products are non-toxic, tasteless and colorless, with good texture and no harm to human body, but it is difficult for ordinary counterfeit silicone products to achieve these effects. Fake and shoddy silicone products are generally toxic and pungent, but also relatively rough!
3. At the same time, it is also very useful for us to burn out true and false silica gel by flame. False silica gel products emit black smoke when burning, and the residue is black powder, while real silica gel products emit white smoke when burning in any color, and the residue is white powder.
Baidu encyclopedia-silica gel