Liquid silicone manufacturers introduce information about the hardness of liquid silicone rubber products

- Dec 06, 2019-

With the development of the organic silicone industry and the upgrading of product technology levels and technological requirements, the molding process of liquid silicone products has become the mainstream processing method. However, anyone who wants high-quality and high-precision products to choose liquid processing basically has no defects, so the current liquid silicone The development trend of the process is valued, and with the maturity of the process, the raw materials of silica gel have certain limitations. Can the technology of high hardness liquid silica gel mature?

After the liquid silicone raw material usually exceeds 50 degrees, the processing difficulty of the product will increase. Because it is different from solid molding, the raw material is in the form of a water-like paste. Therefore, when the hardness is increased, the mixing and the barrel will be more troublesome. And as the hardness increases, the tear resistance will decrease. The higher the hardness, the more likely it is to break and break.

High-hardness silicone rubber products are currently used in many products, and liquid silica gel is currently used in some products that are more commonly used in our lives. Both the performance and the feel have advantages, but many silicone product manufacturers Reluctant to use high-hardness liquid silicone materials, because the higher the hardness, the slower the liquid material is fed into the mold, the production and processing will seriously affect the efficiency and mold loss, and the poor and production efficiency will be affected.


Everyone knows that the solid-state technology of silicone product manufacturers has now exceeded the 90-degree hardness requirement. As the technology matures, it is likely to break through 100 degrees or higher hardness in the future. In the liquid silicone production process, high-hardness silicone materials are not mature. In the early years, foreign countries began to study the replacement of solid-formed high-hardness liquid silicone rubber. However, due to technical problems, it has been difficult to solve the problem. It is necessary to ensure the fluidity and high toughness of the material. Ensure that the raw materials are free of any cross-linking agents to ensure vulcanization molding time and fluidity. Therefore, materials have been limited to low temperatures and have been difficult to breakthrough.

Nowadays, the raw materials of liquid silicone products have gradually increased from the original 50 degrees to 60 to 70 degrees. After the breakthrough of technological levels, the development of liquid silicone products has gradually matured. From only a few countries in the past to control the high hardness technology, It has spread to countries around the world. At present, the demand for liquid silicone materials with high hardness and high complexity due to product diversification and variability is gradually increasing. Today's 70 degrees is the current technical limitations of the silicone industry. Silicone raw materials will gradually break through this limited technology.