Thermally recyclable polyester-based phase change materials networks with high latent heat and network self-stability even at high temperature

被引：22

作者：

Fu, Xiaowei ^{[1
]}

Wu, Bo ^{[1
]}

Yuan, Ye ^{[1
]}

Lei, Jingxin ^{[1
]}

机构：

[1] Sichuan Univ, Polymer Res Inst, State Key Lab Polymer Mat Engn, Chengdu 610065, Peoples R China

来源：

JOURNAL OF ENERGY STORAGE | 2021年 / 36卷

关键词：

Phase change materials; Recycling; Dynamic covalent bonds; Network stability; ACID COPOLYMERS; COMPOSITES; PCMS;

D O I：

10.1016/j.est.2021.102364

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The polyethylene glycol (PEG)-based solid-solid phase change materials networks (PCMNs) were synthesized via esterification reactions between pyromellitic dianhydride-derived multi-carboxyl PEG and trimethylolpropane tris(1-aziridine propionate) in the presence of transesterification catalyst, endowing PCMNs with recyclability, high latent heat and network self-stability even at high temperature in a synergistic approach. The latent heat of the PCMNs increased from 93.5 J/g to 137.3 J/g with increasing the encapsulation content from 87.9% to 93.5%. The recycling of PCMNs was realized at high temperature (140 degrees C) under a high pressure (15 MPa) and the network self-stability of PCMNs was verified at high temperature (140 degrees C) under a dead load due to quasibalanced conformation. The integrated comprehensive performance of PCMNs, including phase change, mechanical and recycling properties, were necessary for the practical applications.

引用

页数：8

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