Composite heat conductive material for LEDs

A technology of composite thermal conductive materials and inorganic filling materials, applied in the field of thermal conductive materials, can solve the problems of reduced aging insulation performance, lamp failure, high temperature resistance, aging resistance, impact resistance, and unsatisfactory insulation performance, and achieves good thermal conductivity and use. Long life and excellent aging performance

CN105086461AInactive Publication Date: 2015-11-25桂林健评环保节能产品开发有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2015-11-25
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

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.
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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...

Examples

Embodiment 1

[0014] First, weigh the components by weight: 10 parts of silicone resin, 10 parts of branched chain silicone oil, 15 parts of linear silicone oil, 1 part of antioxidant, 19 parts of graphene, 15 parts of nanoscale thermal conductive metal fiber, inorganic filler material 15 parts, 95% alumina ceramic fiber 15 parts.

[0015] Then, prepare the composite heat-conducting material: add silicone resin, branched chain silicone oil, linear silicone oil, and antioxidant into the blender and mix in sequence. After mixing for 40 to 70 minutes, a matrix resin is obtained; add graphene, nano-scale Heat-conducting metal fibers, inorganic fillers, and 95% alumina ceramic fiber fillers are stirred for 50 to 90 minutes to fully mix, and then stirred for 45 minutes under a vacuum of -0.05MPa to obtain a composite heat-conducting material.

Embodiment 2

[0017] First, weigh the components by weight: 12 parts of silicone resin, 12 parts of branched chain silicone oil, 17 parts of linear silicone oil, 3 parts of antioxidant, 17 parts of graphene, 13 parts of nano-scale thermal conductive metal fiber, inorganic filler material 13 parts, 13 parts of 95% alumina ceramic fiber.

[0018] Then, prepare a composite heat-conducting material: the same as in Example 1.

Embodiment 3

[0020] First, weigh the components by weight: 15 parts of silicone resin, 15 parts of branched chain silicone oil, 20 parts of linear silicone oil, 5 parts of antioxidant, 15 parts of graphene, 10 parts of nanoscale thermal conductive metal fiber, inorganic filler material 10 parts, 95% alumina ceramic fiber 10 parts.

[0021] Then, prepare a composite heat-conducting material: the same as in Example 1.