Silicones are used in automotive electronic devices: adhesives and sealants, potting compounds, gels, insulating coatings, thermally conductive adhesives and other materials. These materials are used to protect engine control modules, ignition coils and ignition modules, power system modules, braking system modules, exhaust emission control modules, power systems, lighting systems, various sensors, connectors, etc.
    Used in various control modules for bonding and fixing components on circuit boards, or for auxiliary fixing of large components such as capacitors, inductors, and coils to prevent components from falling off due to vibration. With vibration reduction function. In addition, it is also used for module shell bonding and sealing, which has the functions of sealing, moisture-proof, anti-fouling and anti-corrosion. If a thermally conductive adhesive is used, it has both the bonding and heat dissipation functions, and can be used to fix power devices or bond heat sinks to achieve bonding and heat dissipation functions.
    It is used on various control modules to make overall and general potting of components to meet the basic requirements of moisture resistance, pollution prevention and corrosion protection. The use of silicone encapsulant can reduce stress and withstand high and low temperature impact. For high-power control modules, thermally conductive potting compound is used to achieve heat dissipation. Wipers controllers and power system modules are widely used in silicone potting materials. The potting of HID (High Intensity Discharge) lamp module is a typical application. The HID module contains the igniter and converter. The potting compound used must have good adhesive properties and excellent dielectric properties, be able to prevent dust and water, and provide sufficient insulation protection; the potting compound must be soft to prevent the solder joints from falling off; The module contains some heating elements, so the potting compound needs to have a certain thermal conductivity; in order to prevent volatile substances from atomizing on the lamp and the refractometer, the potting compound is preferably refined; the final potting compound must be UL94V-0 flame retardant grade.
   Gel potting materials are the main glue used in automotive electronic devices. The function is similar to potting compound, but it provides further reduction of stress and vibration. It is particularly useful for fine line protection under vibration and extreme low temperature conditions. The extremely low stress of the silicone gel potting material and the original insulation and moisture-proof properties of the silicone make the silicone gel potting material the main potting protection material in automotive electronics. Protecting engine control modules, ignition wires, etc. are typical applications. This potting material needs to have excellent dust-proof and water-proof properties, and requires high flexibility, which can protect the connection from stress, and maintain high flexibility even at -55 ° C.