Talcum powder-nylon thermal conductive composite for LED lamps and preparation method thereof

Abstract

The invention relates to a talcum powder-nylon thermal conductive composite for LED lamps. The talcum powder-nylon thermal conductive composite is prepared from, by weight, 200 parts of nylon 6, 20-30 parts of talcum powder, 20-30 parts of carbon fibers, 50-60 parts of acetone, 80-100 parts of 60-70% nitric acid, 3-4 parts of polyvinylpyrrolidone, 2-3 parts of lauryl sodium sulfate, 1-2 parts of texanol, 3-5 parts of glyceryl stearate, 15-20 parts of phenylene diisocyanate, 20-25 parts of hydroxyethyl methacrylate, 0.4-1 part of catalyst, 0.4-2 parts of polymerization inhibitor, 150-170 parts of tetrahydrofuran, 80-100 parts of methylbenzene and appropriate deionized water. By the aid of the talcum powder which has lubricity, sticking resistance, flow aiding, fire resistance, acid resistance, insulativity, high melting point and inactive chemical property and with the aid of synergistic action of the talcum powder and the carbon fibers, heat-conducting property of the nylon thermal conductive composite is improved.

Description

technical field [0001] The invention relates to a nylon heat-conducting material and a preparation method thereof, in particular to a talcum powder-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 smaller than that of ...

AI Technical Summary

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