Regarding the hardness range of silicone products.
Most silicone products use silicone rubber compound, and the molding process is mostly hydraulic molding. The lower the hardness, the more unfavorable the product is for material placement, and the more bubbles will be generated during high-temperature vulcanization due to its semi fluid internal structure. Therefore, we have very high requirements for selecting silicone materials for such products, and we must also use the best vulcanizing agent by increasing the power of the vacuum machine and improving the mold structure to solve the problem.
Silicone products have good toughness and elasticity, and are not easily deformed by external forces. There is a layer of oily substance on the surface layer, so it feels smooth to the touch. It is mainly used in industries such as construction machinery, automobiles, electronic products, household appliances, toys, medical care, sports equipment, etc. It has the functions of shock absorption, sealing, anti-static, high and low temperature resistance, wear resistance, flame retardancy, acid and alkali corrosion resistance, etc.
The adsorption function of silica gel is mainly physical adsorption, which can be regenerated and reused. Add acid to alkali metal silicate (such as sodium silicate) solution to acidify it, and then add a certain amount of electrolyte for stirring to generate silicic acid gel.
In general, the hardness of silicone products is 30-80 °, which is also a common silicone hardness and suitable for the production of most silicone products. Let's take silicone tubing as an example: Silicone tubing, also known as silicone tubing. Used as a carrier for the circulation and encapsulation of liquids, gases, and other materials. Hardness: 70 ± 5, tensile strength: ≥ 6.5
