What Are the Applications of Silicone in Automobiles?

For more than ten years, automobiles have been developing in the direction of reducing weight, increasing vehicle speed, saving fuel, limiting displacement, and improving reliability. The core of the development is to reduce the size of the engine. After the turbocharger was applied, the working temperature under the hood became higher and higher. It was 100°C in the 70s, 150°C in the 80s, and over 200°C in the 90s. Therefore, the use of Silicone Rubber Single Wire Seal in key parts is increasing.

At present, Silicone Rubber Wire Seal and gaskets have been widely used in drive shafts, embedded covers, oil pans, cooler caps, headlights, sliding roofs, openable roofs, muffler joint seals, and durable High, low temperature, weather-resistant connectors and ventilators; silicone rubber protective sleeves are mainly used for spark plugs, distributors, ignition coils, plugs, car headlights, etc.; silicone rubber hoses are mainly used for heating systems, turbochargers, etc. In addition, fabric-reinforced silicone rubber airbags have also been used in automobiles as a safety measure for drivers and passengers.

Silicone applications in automotive electronic devices include bonding and sealing, potting glue, gel, insulating coating, thermal conductive glue, and other materials. These materials are used to protect engine control modules, ignition coils and ignition modules, power system modules, brake system modules, exhaust emission control modules, power systems, lighting systems, various sensors, connectors, etc.

Silicone Rubber Wire Seal

Adhesives and sealants: used in various control modules as bonding and fixing of components on circuit boards, or auxiliary fixings of large components, such as capacitors, inductors, and coils to prevent components from being damaged Vibration and fall off, it has the function of fixing and damping. In addition, it is also used for the bonding and sealing of module housing, which has the functions of sealing, moisture-proof, anti-fouling, and corrosion-proof. If a thermally conductive adhesive is used, it has both bonding and heat dissipation functions. It can be used to fix power devices or bond heat sinks to achieve bonding and heat dissipation functions.

In the past, car oil seals were mostly made of nitrile rubber, but as the vehicle speed increases and the temperature rise increases, the nitrile rubber lip is easy to crack. After switching to high tear-resistant silicone rubber, the problem was solved satisfactorily. The silicone rubber ignition cable has the advantages of corona resistance, ozone resistance, fuel-saving, and no pollution to the environment, and has a long service life, and is safe and reliable. The silicone rubber hose is used as the main component of the radiator and heater and has a long service life (5 years). ), at least 800,000 km. As the silicone rubber hose has excellent heat resistance, it can also be used as a flexible joint for turbocharger air pipes and oil return pipes. The temperature here is as high as 205°C, which general organic rubber cannot bear. Silicone rubber parts have been successfully used in keyless door locks, electrical system protective covers, halogen lamp covers for car lights, sunshades, etc., and there will be more and more applications.