Explain the core reasons for the decrease in performance of silicone rubber sheet. Do you understand?
Rubber and plastic products have aging, and silicone rubber products have outstanding performance compared with other rubbers, but it is also difficult to escape the damage of time and environment and the coverage of the application range. At present, silicone gaskets The aging life has gradually attracted the attention of consumers. Everyone knows that once the silicone rubber gasket loses its life, it may bring great impact and trouble, and it is troublesome to replace and disassemble, especially the machinery industry. How to improve the silicone rubber sheet? The service life of the material has become a problem.
Use of environmental impact

In the process of use, many silicone rubber products will gradually increase due to strength problems, and the main impact of the force is the deformation caused by long-term extrusion and excessive damage to the force. In the machinery industry, a product needs to be in a link for a long time. After decades of use, such as O-rings on silicone oil hydraulic presses, which are subject to long-term friction and are oil seals, the performance gradually begins to gradually disappear after being used for too long.
Temperature effect

Although the silicone products can withstand high and low temperature normally, if the silicone rubber gasket is affected by the temperature for a long time, it will still have a certain effect on the silicone gasket. If the hardness of the silicone rubber raw material is low, the melting point of the adhesive material is low. After the temperature rises, the adhesive closes to the temperature conversion effect. The plastic flow of the adhesive becomes larger, which causes the adhesive to release and dissolve. The silicone rubber material is different from the adhesive material. The key problem is that thermal oxidation and high temperature decomposition cause silicone rubber. The strength of the material is reduced.

Liquid influence!

In the case of oil, the performance of silicone does not reach the effect of the specified rubber oil resistance. For example, silicone rubber is used normally in water for a long time. If it is at rest, it will not have any effect. It can be used for more than five to ten years. If the silicone rubber gasket is stressed in oil or water, the density of water must be lower than the density of silica gel. Therefore, the silicon chain will be stressed by water or oil during the movement to reduce the strength of the silicon molecular chain, so it is not recommended. Used in liquid state.
Material and finished product impact

The quality of the material is the main impact. Because different raw material formulations of different silicone products manufacturers have different material characteristics, you may use different materials of silicone gaskets in the same place. There may be different differences, so the selection of materials And performance and testing certification are still more important. The quality of the finished product is of course important. For the aging of the silicone finished product, the control of time and temperature during product processing can control the actual softness and brittle hardness of the product. After the hardness and softness are different, the silicone rubber gasket is under stress. Under aging life is likely to accelerate.