Effects and mechanism of filler content on thermal conductivity of composites: a case study on plasticized polyvinyl chloride/graphite composites
JOURNAL OF POLYMER ENGINEERING(2022)
摘要
Thermally conductive polymer composites that retain mechanics and processing properties have attracted significant attention because of promising high thermal conductivity. Herein, plasticized polyvinyl chloride (P-PVC)/graphite composites were successfully prepared via melt blending. Following the addition of graphite rising from 0 to 300 phr, the thermal conductivity of P-PVC/graphite composites increases from 0.18 to 3.01 W m(-1) K-1. The thermal conductivity of P-PVC/ graphite composites with 300 phr graphite is 17 times that of the P-PVC matrix. P-PVC/graphite composites with high thermal conductivity have excellent performance in thermal management for LEDs. Therefore, the high thermal conductivity allows for the LED's temperature to drop 44%, compared with the P-PVC matrix, at 1.5 V. The notably cooling effect provides the ideas for the future application of the P-PVC/graphite composites in the thermal management for electronic components.
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关键词
composites, graphite, plasticized polyvinyl chloride, thermal conductivity, thermal management
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