Many friends know that silicone rubber products have a certain strength category, although it looks soft, but beyond a certain hardness and softness standard, the rubber is not up to the standard, such as the product is too hard or too soft, too hard goods will be replaced by natural rubber and other synthetic rubber, hardness is too soft may also be replaced by different materials, such as silicon gel is one of them. As a hot material in recent years, what is the difference between it and silicone rubber?
Silicone rubber products belong to solid molding processing, it is based on polymethyl vinyl siloxane as the main body, raw materials through carbon black, siloxane and silicone resin and other compounds to combine as auxiliary materials, the product is high temperature molding production and processing molding has good softness, hardness and softness between 20-80 degrees.
Silicon gel it also belongs to one of the silicone inside, and it is mainly liquid forming can reach -40 degrees of softness, and high purity, strong elasticity, it is formed after curing in a semi-solidified state, used as a variety of auxiliary sealing basic materials have good sealing, with certain high temperature resistance. After the completion of raw material modulation and silicone rubber raw materials, there will be no solidification state, and the solidified body can be formed after fixed-line, and there is no reaction change in the fixed-line process!
It is not the same as silicone products concerned about processing methods and commercial materials, silicone gel has higher quality adaptability and environmental properties and application in any substance, and silica gel can heal automatically after being crushed by force, and the density can be moisture-proof and waterproof. Therefore, it is used for waterproof, moisture-proof, anti-gas pollution coating, pouring and potting protection of precision electronic components, backlight and electrical modules.
Silicon gel can be divided into various types of use, and our common medical materials and other materials will use medical grade silicon gel material, because it has a soft performance below zero degrees and has automatic healing conditions, can contact the skin and the human body for a long time.