铜微粒填充聚乙烯基高导热聚合物复合材料的结晶热研究

N. Fialko, R. Dinzhos, N. Koseva
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摘要

本文介绍了铜微粒填充聚乙烯基聚合物复合材料结晶比热的实验研究结果。给出了填料质量分数和熔体冷却速率等因素对复合材料结晶热影响的数据。当填料的质量分数从0.3%增加到4.0%,微复合材料从熔体的冷却速度从1 K/min增加到20 K/min时,进行了相应的研究。结果表明,结晶比热随速度VT和填料质量分数ω的增加而显著降低。本文介绍了用干燥形式和聚合物熔体混合的方法得到的聚合物微复合材料结晶比热值的比较结果。确定了第一种指示方法对应于较大的结晶热值。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
CRYSTALLIZATION HEAT OF HIGH HEAT CONDUCTING POLYMER COMPOSITES BASED ON POLYETHYLENE FILLED WITH COPPER MICROPARTICLES
The results of experimental studies of the specific heat of crystallization of polymer composites based on polyethylene filled with copper microparticles are presented. Data concerning the effects on the crystallization heat of the studied composites on such factors as the mass fraction of the filler and the cooling rate of the composites from the melt are presented. The corresponding studies were performed with a change in the mass fraction of the filler from 0.3% to 4.0% and the cooling velocity of the microcomposite from the melt from 1 K/min to 20 K/min. It is shown that the specific heat of crystallization decreases significantly with increasing speed VT and the mass fraction of the filler ω. The results of the comparison of the values of the specific heat of crystallization of polymer microcomposite, obtained by a method based on the mixing of components in a dry form and in a polymer melt, are presented. It was established that the first of the indicated methods correspond to large values of the heat of crystallization.
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