摘要
以石蜡@密胺树脂微胶囊(Pn@MF)为相变填料,环氧树脂为支撑材料,通过将相变微胶囊封装在环氧树脂泡沫中得到一种复合相变材料(CPCMs)。通过扫描电镜表征表明相变微胶囊与环氧树脂泡沫相容性良好。随着微胶囊含量的增加,差示扫描量热分析表明CPCMs的相变焓值增大,当Pn@MF含量为40%时,焓值达到102. 2 J/g,其泄漏率仅为1. 31%,具有较低的渗漏率; CPCMs的热导率始终低于0. 14 W/(m·K)。随着发泡剂含量的增加,CPCMs的渗漏率降低,热导率降低,而力学性能先升高后降低。发泡温度的升高会对渗漏率、热导率和力学性能产生不利影响。CPCMs的低导热率和低泄漏率可应用于热能储存领域。
Using Paraffin@melamine resin microcapsules (Pn@MF) as phase change fillers and epoxy resin as support material,a series of composite phase change materials (CPCMs) were obtained by embedding Pn@MF in epoxy resin foam. Scanning electron microscopy shows that the Pn@MF and the epoxy resin foam have good compatibility. With increase of the microcapsule content, the DSC test shows that the phase change enthalpy of CPCMs increases. When the Pn@MF content is 40%, the enthalpy value reaches 102. 2J/g and its leakage rate is only 1.31%, which has a low leakage rate. The thermal conductivity of CPCMs is always lower than 0. 14W/(m · K). With increase of the foaming agent content, the leakage rate of CPCMs decreases, the thermal conductivity decreases,and the mechanical properties first increase and then decrease. An increase in the foaming temperature adversely affects the leak rate, thermal conductivity,and mechanical properties. The low thermal conductivity and leakage rate of CPCMs can be used in the thermal energy storage field.
作者
丁泽
陈昭朋
张凯
杨文彬
范敬辉
吴菊英
何方方
Ze Ding;Zhaopeng Chen;Kai Zhang;Wenbin Yang;Jinghui Fan;Juying Wu;Fangfang He(State Key Laboratory of Environment-Friendly Energy Materials,Southwest University of Science and Technology,Mianyang 621010 ,China;General Engineering Institute,China Institute of Engineering Physics,Mianyang 621900,China)
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2019年第1期136-141,共6页
Polymer Materials Science & Engineering
基金
国家自然科学基金委员会-中国工程物理研究院联合基金资助项目(U1530102
U1730114)
四川省科技厅应用基础研究重点项目(2017JY0149)
四川省教育厅科研创新团队项目(17TD0043)
环境友好能源材料国家重点实验室开放基金(17kffk15)
关键词
复合相变材料
微胶囊
环氧树脂
渗漏率
热导率
composite phase change material
microcapsule
epoxy resin
leakage rate
thermal conductivity
