Investigation of exfoliated graphite nanoplatelets (xGnP) in improving thermal conductivity of paraffin wax-based phase change material
Investigation of exfoliated graphite nanoplatelets (xGnP) in improving thermal conductivity of paraffin wax-based phase change material
复制标题
DOI：
10.1016/j.solmat.2011.01.048
复制
发表时间：
2011-07
影响因子：
6.9
通讯作者：
Jinglei Xiang;L. Drzal
中科院分区：
文献类型：
--
作者：
Jinglei Xiang;L. Drzal
将两种不同的膨胀型纳米石墨片（xGNP-1和xGNP-15）与石蜡混合，制备了相变储能复合材料。采用直接浇铸法和双辊球磨法制备样品。对这两种纳米片的纳米复合材料的导热性和导电性进行了研究。具有更大长径比、更好取向和更低界面密度的纳米填料可以获得更高的复合PCM热导率。采用差示扫描量热法和热重分析法研究了复合材料的热物理性能。结果发现，潜热的纳米复合材料没有受到不利影响的xGNP纳米片的存在和热稳定性提高。
Composite phase change materials (PCM) for latent heat thermal energy storage were made by mixing two different kinds of exfoliated graphite nanoplatelets (xGnP-1 and xGnP-15) into paraffin wax. Direct casting and two roll milling were used to prepare samples. The investigation on the thermal and electrical conductivity of nanocomposites with these two nanoplatelets was performed. Higher thermal conductivity of composite PCM can be achieved with nanofillers of larger aspect ratio, better orientation and lower interface density. The thermal physical properties of the nanocomposites were investigated by differential scanning calorimetry and thermal gravimetric analysis. It was found that the latent heat of the nanocomposites was not adversely affected by the presence of xGnP nanoplatelets and the thermal stability improved.