Polyimide/boron nitride composite aerogel fiber-based phase-changeable textile for intelligent personal thermoregulation

被引：58

作者：

Zhang, Qiaoran ^{[1
]}

Xue, Tiantian ^{[1
]}

Tian, Jing ^{[1
]}

Yang, Yi ^{[1
]}

Fan, Wei ^{[1
]}

Liu, Tianxi ^{[1
,2
]}

机构：

[1] Donghua Univ, Coll Mat Sci & Engn, State Key Lab Modificat Chem Fibers & Polymer Mat, Shanghai 201620, Peoples R China

[2] Jiangnan Univ, Sch Chem & Mat Engn, Key Lab Synthet & Biol Colloids, Minist Educ, Wuxi 214122, Peoples R China

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2022年 / 226卷

基金：

中国博士后科学基金; 中国国家自然科学基金;

关键词：

Polyimide; Boron nitride; Phase-changeable materials; Aerogel fiber; Intelligent thermoregulation; THERMAL-CONDUCTIVITY; ENERGY; MANAGEMENT; GRAPHENE;

D O I：

10.1016/j.compscitech.2022.109541

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Aerogel fibers, which are beneficial for enhancing the thermal response and preventing the leakage of phase changeable materials (PCMs) during phase change process, are excellent candidates for phase-changeable textiles with excellent thermoregulating performance. Herein, polyimide/boron nitride (PI-BN) composite aerogel fibers with highly porous structure and good mechanical strength have been prepared by freeze-spinning technique, which could be served as the heat conduction path and skeleton for PCMs. Into the pores of the PI-BN aerogel textile was incorporated polyethylene glycol (PEG) by vacuum impregnation to obtain phase changeable PI-BN/PEG textile. The high thermal conductivity of PI-BN skeleton could endow the quick thermal response rate of PI-BN/PEG textile upon the phase change process, while the high porosity of aerogel fiber could allow high loading of PEG and inhibit liquid leakage during phase change process. The resultant PI-BN/ PEG composite textile has high thermal conductivity (5.34 W m(-1) K-1), high enthalpy (125.2 J g(-1)) and excellent work stability after 100 heating-cooling cycles, accounting for the desired thermoregulating performance. Moreover, polydimethylsiloxane (PDMS) has been coated on the surface of PI-BN/PEG textile, endowing the textile hydrophobicity, waterproofness and washability, indicating its great potential as candidate for personal thermal management.

引用

页数：8