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中文摘要：
钾明矾作为固-液相变材料存在热传导性能差的缺点。目前应用高导热性能的石墨进行改进的研究中存在石墨用量过大（一般10%～20%）的问题。通过改性石墨与相变材料的复合使相变材料的热传导性能得到提高,并使改性石墨的用量降低到5%,可将相变时间缩短72.8%。
英文摘要：
Aluminum potassium sulfate has has a disadvantage in poor thermal conductivity.Currently one method is to adulterate graphite which has high thermal conductivity into the PCM for thermal conductivity improvement,but this method uses excessive graphite（generally 10%-20%）.The modified graphite was compounded into PCM.The result indicated that the thermal conductivity had been improved,as the dosage of graphite reduced to 5%,and the phase change time was reduced about 72.8%.
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