石墨填充复合相变储能材料导热性能和稳定性能研究  

Study on Thermal Conductivity and Stability of Expanded Graphite Filled Phase Change Materials

作　　者：刘亚平[1] 王家俊[1,2] 周后恩[2] 郭丽[2] 

机构地区：[1]浙江理工大学材料与纺织学院,杭州310018 [2]浙江理工大学先进纺织材料与制备技术教育部重点实验室,杭州310018

出　　处：《浙江理工大学学报（自然科学版）》2011年第4期586-590,共5页Journal of Zhejiang Sci-Tech University(Natural Sciences)

基　　金：教育部"长江学者和创新团队发展计划"创新团队资助项目(IRT0654)

摘　　要：以三水醋酸钠作为储能单元、环氧树脂为载体制得复合相变储能材料,它在熔点温度时表现出很强的稳定性和储能效果。通过向复合相变储能材料中添加导热率高的且具有多孔吸附性的膨胀石墨,可进一步提高导热性能和密封性能。结果表明,当三水醋酸钠质量分数为60%,膨胀石墨为5%时,相变储能材料相变焓为148.5 J/g,导热率为0.891 W/(m℃),且稳定性良好。The new composites made of sodium acetate trihydrate（CH3COONa·3H2O） and ethoxyline resin（EP）,in a melting temperature are presented in terms of stability,storage capacity.Moreover,the addition of expanded graphite to enhance the thermal conductivity of the materials is presented in absorbability due to its porosity.The experiment results indicate new composites which contain sodium acetate trihydrate by 60wt% and expanded graphite by 5wt% possess thermal capacity of 148.5J/g and thermal conductivity of 0.89W/m℃,and presented well stability in the heating process.

关 键 词：复合相变储能材料 膨胀石墨 换能速率 导热系数 

分 类 号：TB34[一般工业技术—材料科学与工程]