摘要
通过比较由超高热导率的纳米钻石和微米级铝粉填充环氧树脂制得的复合材料,探究复合材料的导热行为。结果显示,填料粒子的尺寸可以影响环氧树脂基体在粒子之间的存在形式,从而影响复合材料热导率,当填充粒子间的距离在一整条分子链长度内时,复合材料的热导率会出现突然的增加。填料粒子与基体界面结合方式也会影响分子链在粒子表面的排列形式,从而影响复合材料的热导率。
By comparing the composites made of epoxy resin filled with nano-size diamond and micro-size aluminum powders with high thermal conductivity, this paper studied the thermal conductivities of EP-matrix composite. The results showed that the different filler sizes could affect the distribution of EP-matrix between the particles and thus influenced the thermal conductivities of the composites. The thermal conductivities of the composites would suddenly increase when the distance between the filler particles was within the length of the single molecular chain. The interface situation between fillers particles and EP matrix also influenced the arrangement of EP molecular chain on the filler surface and the final thermal conductivities of the composites.
出处
《塑料工业》
CAS
CSCD
北大核心
2010年第3期63-66,共4页
China Plastics Industry
关键词
环氧树脂
铝粉
钻石粉
热导率
机理
Epoxy Resin
Aluminum Powder
Diamond Powder
Thermal Conductivity
Mechanism
