Application and selection of silicone potting silicone rubebrs
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1. Typical application of silicone potting glue in automotive electronics
Potting glue is used on all kinds of control modules to do integral and general encapsulation of components to meet the basic requirements of moisture-proof, anti-fouling, and anti-corrosion. In addition, the use of silicone encapsulants can reduce stress and withstand high and low temperature impacts. For high-power control modules, thermal conductivity potting glue can be used to achieve the function of heat dissipation.
2.The application of organic silicon materials in the power industry.
In order to ensure the stability and durability of the performance of power supply equipment in major industry applications, and eliminate the reduction in equipment reliability caused by environmental factors (moisture, salt spray, dust, vibration, heat, etc.), the power supply The industry has put forward more stringent requirements. Due to the unique properties of silicone materials, such as moisture resistance, hydrophobicity, electrical insulation, high and low temperature resistance, chemical stability, etc., they have been widely developed and applied in the power supply industry in recent years. They are typically technology-intensive and high-value-added. product.
3. in the face of many potting glue types and application differences, how to choose a suitable potting glue product?
The following points need to be considered when choosing electronic potting glue:
1. The temperature that the electronic potting glue needs to withstand after curing. After curing, the silicone electronic potting glue can withstand -50°C to 200°C, which is higher than that of epoxy resin electronic potting glue and polyurethane electronic potting glue.
2. Resistance to cold and heat changes. Among the many types of electronic encapsulants, silicone electronic encapsulants have outstanding resistance to cold and heat, followed by polyurethane electronic encapsulants, then epoxy resin electronic encapsulants, and silicone encapsulants have the best performance .
3. Thermal conductivity. Silicone electronic potting compounds generally have good thermal conductivity, while epoxy materials and polyurethane materials have poor thermal conductivity.
4. Electrical and insulation properties. Among the common types of electronic potting glue, silicone electronic potting glue has better electrical insulation performance, followed by polyurethane electronic potting glue, and then epoxy resin electronic potting glue.
5. Stress condition. For the potting of sensitive devices, there will be more stress requirements. Silicone potting products have low stress and can effectively protect sensitive components.
6. Flame retardancy. Many electrical appliances have flame-retardant requirements for electronic potting compounds, so that the electrical appliances will be safer in use.
Silicone potting products have excellent performance. After curing, they form a glossy and elastic glue layer, which can protect a variety of substrates; it has good durability and weather resistance, and can resist salt spray, corrosion and Moisture and moisture, and resist aging, effectively extend the service life; silicone potting glue has no toxic substances and is safe and environmentally friendly. Silicone potting adhesives are widely used in new energy, medical, aviation, shipbuilding, electronics, automobiles, instruments, power supplies, high-speed rail and other industries.