Nowadays, the miscellaneous pieces of silica gel have better performance and do not need scarce resources, making it a substitute in the same kind. However, there is a problem that we should pay attention to, that is, the time is long, and the aging condition will be affected by various factors. For this we must always pay attention.

Reasons for aging of silicone miscellaneous pieces:
1, the role of heat, appliance rubber hose manufacturers to increase the temperature can cause thermal cracking or thermal crosslinking of silicone rubber products. But the basic role of heat is activation. Increasing the rate of oxygen diffusion and activating the oxidation reaction to accelerate the oxidation reaction rate of the rubber is a ubiquitous phenomenon of aging - thermal aging.

2, the role of oxygen, oxygen in the rubber with the rubber molecules free radical chain reaction, molecular chain breakage or excessive cross-linking, resulting in changes in the performance of silicone rubber products, oxidation is one of the important reasons for rubber aging.

3, the cause of aging of silicone miscellaneous pieces: the reason of light, the shorter the light wave, the greater the energy. What is damaging to rubber is the higher energy of ultraviolet light. In addition to ultraviolet rays directly causing the breakage and cross-linking of rubber molecular chains, rubber generates free radicals by absorbing light energy, triggering and accelerating the oxidation chain reaction process, and heating by external light.

4. The role of ozone, the chemically active oxygen of ozone is much higher and more destructive. It also causes the molecular chain to break, but the effect of ozone on rubber varies with the deformation of rubber. When it is used as a rubber for deformation (mainly unsaturated rubber), a crack which is straight in the direction of stress is applied, that is, "ozone cracking", and when it acts on a deformed rubber, only an oxide film is formed on the surface without cracking.

Appliances rubber hose manufacturers should pay attention to the use of various high and low temperatures is a major factor affecting the product, although the silicone material can accept high temperatures of more than 200 degrees to -40 degrees, but long-term application in the case of severe heat will accelerate The aging of the silicone seal ring, the higher the temperature, the greater the deformation of the product.