Aging-resistant aluminum oxide-nylon heat conducting composite material for LED lamps and preparation method of composite material

Abstract

Provided is an aging-resistant aluminum oxide-nylon heat conducting composite material for LED lamps. The composite material is prepared from, by weight, 200 parts of nylon 6, 8-10 parts of nano-zinc oxide, 30-40 parts of aluminum oxide, 5-8 parts of zirconium tungstate, 20-30 parts of carbon fibers, 50-60 parts of acetone, 80-100 parts of 60%-70% nitric acid, 70-80 parts of a 1%-3% silane coupling agent water solution, 8-10 parts of acetic acid, 15-20 parts of isophorone diisocyanate, 20-25 parts of pentaerythritol triacrylate, 0.4-1 part of a catalyst, 0.4-2 parts of a polymerization inhibitor, 3-5 parts of gelatin, 150-170 parts of tetrahydrofuran, 80-100 parts of toluene and an appropriate amount of deionized water. According to the composite material, nano-zinc oxide is adopted, and therefore the light aging resistance, the shock resistance and the toughness of plastic are improved; surface modification is conducted on the carbon fibers, aluminum oxide is coated with high polymers, and therefore the compatibility of the carbon fibers, aluminum oxide and the nylon 6 is enhanced.

Description

technical field [0001] The invention relates to a nylon heat-conducting material and a preparation method thereof, in particular to an aging-resistant aluminum oxide-nylon heat-conducting composite material for LED lamps. Background technique [0002] Generally speaking, the thermal conductivity of pure plastic materials is far lower than that of metal and ceramic materials, but its insulation performance is good. Thermally conductive plastics not only have the heat transfer properties of metals and ceramics, but also retain the advantages of ordinary plastics in terms of design, performance and cost. Low molding shrinkage, low working temperature and improved design freedom are widely used in various industries. [0003] At present, the most typical application of heat-conducting plastics is in the field of lighting, mainly used to make lamp cups of LED energy-saving lamps that require good heat dissipation. Although the heat consumed by LED energy-saving lamps is much sma...

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Problems solved by technology

[0003] At present, the most typical application of heat-conducting plastics is in the field of lighting, mainly used to make lamp cups of LED energy-saving lamps that require good heat dissipation. Although the heat consumed by LED energy-saving lamps is much smaller than that of ordinary light sources, because LED energy-saving lamps Compact and powerful, how to effectively dissipate heat remains an important issue

[0004] Chinese patent application CN102408710A discloses a high thermal conductivity nylon 66 composite material. The base material is all made of nylon 66, which has high hardness. After adding thermal conductive fillers, the tensile and bending properties of the material will deteriorate, and only a coupling agent is added to the formula. And antioxidants, the processability of the whole system is poor, and there will be broken ends in the production extrusion process, which is not suitable for industrial continuous production