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Features of thermally conductive silicone and silicone grease


  • 1 Heat-conductive silicone (thermal potting adhesive) What are the characteristics

Thermally conductive silicone is often called thermally conductive potting adhesive or thermally conductive RTV adhesive, is a low viscosity flame retardant two-component plus molding silicone thermally conductive potting adhesive, can be cured at room temperature, can also be cured by heating, with the higher the temperature the faster the curing characteristics. The biggest difference with thermally conductive silicone is that thermally conductive silicone can be cured and has certain adhesive properties. Thermally conductive silicone (thermally conductive potting compound) is a type of silicone rubber, which is a one-component, room temperature cured liquid rubber. Once exposed to air, the silane monomer in it undergoes condensation, forming a network structure, the system is cross-linked, cannot be melted or dissolved, has elasticity and becomes rubbery, while bonding objects. Its thermal conductivity is slightly higher than the general rubber, but much lower compared to thermally conductive silicone grease, and once cured, it is difficult to separate the bonded objects.

  • 2 What are the characteristics of thermally conductive silicone grease?

Thermal conductive silicone grease is usually also called "thermal paste", "silicone paste", thermal conductive silicone grease is a high thermal conductivity insulating silicone material, not cured, can be used in -50 ℃ - +230 ℃ temperature for a long time to maintain the state of the grease paste. Thermally conductive material. It has both excellent electrical insulation and excellent thermal conductivity, as well as low oil ionization (tends to zero), high and low temperature resistance, water resistance, ozone resistance, and weather aging resistance. It can be widely coated in various electronic products, electrical equipment, heat generating body (power tube, thyristor, electric heat stack, etc.) and heat dissipation facilities (heat sink, heat sink, shell, etc.) between the contact surface, play a role in heat transfer medium and moisture, dust, corrosion, shock resistance and other properties. Suitable for microwave communication, microwave transmission equipment, microwave special power supply, voltage stabilization power supply and other kinds of microwave devices surface coating or overall potting, such silicon materials for heat-generating electronic components, providing excellent thermal conductivity. Such as: transistors, CPU assembly, thermistors, temperature sensors, automotive electronic parts, automotive refrigerators, power supply modules, printer heads, etc.

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