Composite heat conductive material for LEDs

Abstract

The invention provides a composite heat conductive material for LEDs. The heat conductive material comprises components in parts by weight as follows: 10-20 parts of organic silicone resin, 10-20 parts of branched silicone oil, 15-25 parts of linear silicone oil, 1-10 parts of an antioxidant, 10-20 parts of graphene, 5-15 parts of nanoscale heat conductive metal fibers, 15-25 parts of an inorganic filling material and 15-25 parts of 95% aluminum oxide ceramic fibers. Filling materials such as the graphene with excellent heat conductivity, mechanical and chemical stability and the like, the nanoscale heat conductive metal fibers and the like are introduced into organic silicone resin which is low in surface tension, low in viscosity-temperature coefficient, high in compressibility and high in gas permeability and the branched silicone oil which is long in service life, free of sun crack and hardening and good in heat conduction effect, all the components are matched scientifically and reasonably, and the prepared composite heat conductive material is excellent in aging performance, stable in property, good in heat resistance, good in heat conductivity and particularly applicable to LED lamps.

Description

technical field [0001] The invention relates to the technical field of heat-conducting materials, in particular to a composite heat-conducting material for LEDs. Background technique [0002] The thermal conductive material adheres to the surface of the device or fills in the gap between the two surfaces, removes the air inside the gap, protects the device from external erosion, absorbs movement or deformation stress, and conducts the heat generated by the operation of the internal device in time. It plays the role of heat conduction, sealing, filling, insulation, shock absorption and anticorrosion, and is a functional material with a wide range of uses. [0003] The traditional packaging plastic of LED is ordinary nylon reinforced modified material. The modified composite material based on nylon is relatively unsatisfactory in high temperature resistance, aging resistance, impact resistance and insulation performance. It is often not easy to withstand a short-term high tem...

AI Technical Summary

Problems solved by technology

[0003] The traditional packaging plastic of LED is ordinary nylon reinforced modified material. The modified composite material based on nylon is relatively unsatisfactory in high temperature resistance, aging resistance, impact resistance and insulation performance. It is often not easy to withstand a short-term high temperature of 260°C, which will lead to a decrease in aging insulation performance and even failure of the lamp