Most rubber and plastic materials will basically have aging deformation, and the aging problem of silicone products is also common with the precipitation of time and the influence of the use environment. Silicone accessories are mostly exterior decorations. If it is used for too long, affected by the environment, it will be twisted and worn for a long time, and it will appear sticky, soft, deformed, and obviously hardened, and the service life will be shortened. After long-term use, cracking and breakage will occur. So what causes the aging of silicone products?
1. The effect of light and heat, increasing the temperature can cause thermal cracking or thermal crosslinking of silicone products. But the basic effect of heat is activation. Increase the oxygen diffusion rate and activate the oxidation reaction, thereby accelerating the rubber oxidation reaction rate, which is a common aging phenomenon - thermal oxygen aging.


     2. Oxidation: Oxygen in rubber reacts with free radicals in rubber molecules, and the molecular chains are broken or excessively cross-linked, causing changes in the properties of silicone rubber products.


     3. The reason for the light wave, the shorter the light wave, the greater the energy. It is the ultraviolet rays with higher energy that destroy the rubber. In addition to directly causing the breakage and crosslinking of rubber molecular chains, ultraviolet rays can also generate free radicals due to the absorption of light energy, which initiates and accelerates the oxidation chain reaction process.


     4. The effect of ozone. The chemical active oxygen of ozone is much higher and more destructive. It also breaks the molecular chain, but the effect of ozone on rubber varies with whether the rubber is deformed or not.


     5. The role of moisture. The role of moisture has two aspects: silicone rubber products are easily damaged when they are exposed to rain in humid air or soaked in water. This is because the water-soluble substances and clear water in silica gel are extracted by water. dissolve.


     Silicone products have the characteristics of high temperature resistance, easy cleaning, long life, softness and comfort, various colors, environmental protection and non-toxicity, electrical insulation performance, low temperature resistance, electrical conductivity, weather resistance, thermal conductivity, radiation resistance and so on.


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