摘要
分别以低密度聚乙烯(PE-LD)、高密度聚乙烯(PE-HD)、聚丙烯(PP)、聚苯乙烯(PS)为支撑材料、石蜡为相变材料,采用加热熔融法制备聚烯烃/石蜡复合相变储能材料。考察了不同种类的聚烯烃材料对复合材料储能的影响,通过 DSC 测出 PE-LD/石蜡、PE-HD/石蜡、PP/石蜡、PS/石蜡复合相变材料的相变焓分别为68.44 J/g、45.52 J/g、40.06 J/g、1.19 J/g。结果表明,PE-LD 是其中最好的基体材料,具有最大的相变焓。随着石蜡含量的增加,PE-LD/石蜡复合材料的相变焓逐渐增大。此外,硅藻土和活性炭填料的加入有利于提高相变焓,增强复合材料的稳定性。
Phase change energy storage composites were prepared using paraffin as the phase change material, low-density polyethylene （PE-LD）, high-density polyethylene （PE-HD）, polypropylene （PP）, and polystyrene （PS） as the supporting materials. The phase transition enthalpy of 68.44, 45.52, 40.06, and 1.19 J/g were observed for PE-LD, PE-HD, PP, and PS matrixes, respectively. PE-LD was considered the best phase change matrix because of the highest phase transition enthalpy, which increased with increasing paraffin content. Diatomite and activated carbon could also improve the phase transition enthalpy and stability of phase change materials.
出处
《中国塑料》
CAS
CSCD
北大核心
2008年第4期25-27,共3页
China Plastics
关键词
低密度聚乙烯
石蜡
储能
相变材料
low-density polyethylene
paraffin
energy storage
phase change material
