PC-PET (Polycarbonate-Polyethylene Terephthalate)-based LED (Light Emitting Diode) heat dissipation material containing modified calcium sulfate whisker-carbon nano tube and preparation method of PC-PET-based LED heat dissipation material
A technology of calcium sulfate whiskers and carbon nanotubes, applied in the field of thermally conductive engineering plastics, can solve the problems of low utilization rate of thermally conductive fillers, single conductive shape, long molding process cycle, etc., and achieve good comprehensive mechanical properties and low surface free energy , Improve the effect of performance
Inactive Publication Date: 2016-02-17
张符斌
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Abstract
The invention discloses a PC-PET (Polycarbonate-Polyethylene Terephthalate)-based LED (Light Emitting Diode) heat dissipation material containing modified calcium sulfate whiskers-carbon nano tubes and a preparation method of the PC-PET-based LED heat dissipation material. Composite plastic is characterized in that high polymer materials such as PC and PET are compounded to be used as thermal conductive plastic base stock, good comprehensive mechanical property is obtained, and insulation and durability are realized; the thermal conductivity of the composite plastic is effectively increased due to added nanocrystalline ceramic powder, calcium sulfate whisker-carbon nano tube composite powder which is doped in the added nanocrystalline ceramic powder and is modified by ionic liquid has low surface free energy and high thermal conductivity, the compatibility of the calcium sulfate whisker-carbon nano tube composite powder with high-polymer plastic is good, and a uniform and efficient thermal conducting network with good thixotropy can be formed in the base stock, so that good heat transfer and heat dissipation effects can be obtained, efficient reinforcing and toughening effects are also obtained, the using performance of the PC-PET-based LED heat dissipation material can be improved, and the PC-PET-based LED heat dissipation material has wide application space in LED packaging.
Technology Topic
Carbon nanotubePolyethylene terephthalate glycol +15
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