Hydrophobic and Antimicrobial Polyimide based Composite Phase Change Materials with Thermal Energy Storage Capacity, Applied as Multifunctional Construction Material

Mengman Weng1

Shengdong Liu1

Jingtao Su1

Weihao Xu1

Jintao Huang1,2, Email

Wanyi Tan1

Yidong Liu1

Yonggang Min1,Email

1School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China.
2Key Laboratory of Polymer Processing Engineering (South China University of Technology), Ministry of Education, Guangzhou, 510640, China

 

Abstract

In recent years, it is important to develop efficient multifunctional construction materials under building energy consumption increased continuously. In this study, paraffin/ polyimide aerogel composite phase change materials (CPCMs) with excellent thermal management and hydrophobic thermal insulation by simple melt impregnation method were prepared. Among them, P-P75O25 (n(BPDA-PPD):n(BPDA-ODA)=75:25) CPCM shows excellent comprehensive performance. Its latent heats are 100.98 J/g and 96.21 J/g and enthalpy efficiency are 93.52% and 92.31% during melting and freezing process, respectively. After 200 thermal cycles, the enthalpy loss rate of melting and freezing are 4.25% and 0.73%. At the same time, superior hydrophobic and antimicrobial resistance are verified. All results indicate that P-P75O25 has great potential as a green construction material.

Hydrophobic and Antimicrobial Polyimide based Composite Phase Change Materials with Thermal Energy Storage Capacity, Applied as Multifunctional Construction Material