Silicone foam raw material (also known as: silicone foam cotton/polyurethane foam silica gel) is made of silicone raw rubber, fillers, vulcanization accelerators, foam rubber, etc. The next step is to use a high-pressure silicone foaming machine to produce polyurethane foaming rubber, a porous, low-density, compressible polymer polyurethane elastomer raw material. Nowadays, the use of organic silicone foam is becoming more and more popular because it has the excellent properties of silicone and foam materials at the same time. It not only has the high elasticity of vulcanized rubber, but also has the properties of foam materials such as sound insulation and shock absorption. It is mostly used for materials with relatively high performance requirements such as vibration damping pads, sealing gaskets, sound-absorbing materials, insulating materials, and aviation insulation materials. .

The key to the application of silicone foam in the power lithium battery of new energy vehicles are: battery core cache heat insulation, outer frame sealing. New energy technology power lithium battery-cell cache heat insulation

Batteries are the source of kinetic energy for pure electric vehicles. The potential safety hazards of batteries directly endanger the safety of the entire vehicle. When the batteries are working, they will generate a certain amount of heat, and can generate a certain amount of heat at different temperatures. Due to the expansion and contraction effect, the battery cell will swell to a certain extent, and the long-term capacitance friction between the battery cells may cause damage to the battery cell and cause the rechargeable battery to be invalid or even uncontrollable. Silicone foam has high shrinkage and reduction characteristics, and can avoid deformation caused by thermal expansion and cold contraction of the rechargeable battery Cell during the charging and discharging process of the battery. It has excellent durability and excellent shrinkage and repair characteristics, impact absorption, flame retardancy (UL 94 V0 rating).

Since the output voltage of the battery pack is above 200V, it is required that the battery case must be sealed and waterproof to prevent short circuits caused by water seepage. The waterproof level of the battery case must be IP67. Silicone foam has:

1. At different temperatures, the product performance of the sealing ring is stable;

2. Excellent waterproof sealing, no water seepage after the product goes out;

3. Long-term shrinkage damage is small, and it has a certain ability to restrain shrinkage deformation;

4. It has excellent flame retardancy performance to solve the heat generated in the running state and the heat that is likely to be generated cannot be controlled;

5. With different thicknesses and strengths to meet the requirements of different specifications, the sealing ring must be well matched with the housing and have a low closing force to prevent the sealing ring from bending and arching.


About silicone foam, please check the details:
https://www.siliconefoam.net/product-high-elastic-foam-silicone-strip-iota-4801-.html