What is the role of silicone in the protection of automotive electronic equipment
Source:iotachem.com
PostTime:2025-05-11 19:18:31
Silicone plays a key role in the protection of automotive electronic equipment. Its application forms are diverse and can effectively improve the stability, reliability and safety of electronic equipment. The specific applications are as follows:
Bonding and sealants
Function: In various control modules, the components on the circuit board are bonded and fixed, or the large components such as capacitors, inductors, and coils are assisted in fixing to prevent the components from falling off due to vibration, and play the function of fixing and damping; it can also be used for bonding and sealing the module shell, which plays a role in sealing, moisture-proof, anti-fouling, and anti-corrosion.If a thermally conductive adhesive is used, it has both bonding and heat dissipation functions, and can be used to fix power devices or bond heat sinks.
Function: It is used on various control modules to do overall and general potting of components to meet the basic requirements of moisture-proof, anti-fouling, and anti-corrosion, while reducing stress and withstanding high and low temperature shocks.For high-power control modules, thermally conductive potting glue is used to achieve heat dissipation function.
gel
Function: The function is similar to that of potting glue, but it can provide further stress reduction and damping functions, and it has a unique effect on the line protection of fine lines under vibration and extremely low temperatures.
Insulating coating
Function: It is coated on circuit boards or semiconductor components in various control systems or modules to achieve the purposes of moisture-proof, anti-fouling, and anti-corrosion; it can also be coated on electrodes with high voltage or current to prevent fire and short circuit, reduce the contact between components and the environment and delay corrosion, and protect the metal contacts in electronic devices from environmental damage.
Application case: The circuit board in the wiper can be protected by Dow Corning 3-1953 solvent-free conformal coating, which is waterproof and resistant to corrosion by other liquids.
Thermal conductive material
Function: In various electronic control modules, many high-power components will generate a lot of heat in use. In order to avoid damage to components and circuits due to excessive temperature, thermally conductive materials must be used as a medium to reduce the thermal resistance of interface contact and increase heat dissipation efficiency.Thermally conductive adhesives in silicone materials are used to bond fixed power components and heat sinks, and thermally conductive potting adhesives and gels are used as module potting.