Multifunctional fireproof electromagnetic shielding polyurethane films with thermal management performance

被引：147
作者：
Jia, Pengfei [1 ]
Zhu, Yulu [1 ]
Lu, Jingyi [1 ]
Wang, Bangyu [1 ]
Song, Lei [1 ]
Wang, Bibo [1 ]
Hu, Yuan [1 ]
机构：
[1] Univ Sci & Technol China, State Key Lab Fire Sci, 96 Jinzhai Rd, Hefei 230026, Anhui, Peoples R China
来源：
CHEMICAL ENGINEERING JOURNAL | 2022年 / 439卷
基金：
中国国家自然科学基金;
关键词：
Multifunction film; MXene; Graphite fiber; EMI shielding; Fire safety; WRAPPED AMMONIUM POLYPHOSPHATE; FLAME-RETARDANT PROPERTIES; NANOCOMPOSITES; TEMPERATURE; COMPOSITES; COMBUSTION;
D O I：
10.1016/j.cej.2022.135673
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
A multifunctional polyurethane film (PU) with superior electromagnetic shielding performance, joule heating performance, thermal conductivity and flame retardancy has been carefully designed. The ammonium polyphosphate (APP) wrapped with conductive MXene (MAPP) is prepared by microencapsulation technology and added in PU solution for enhancing the electric conductivity of PU/graphite fiber (GF) film. The threedimensional (3D) conductive network composed of GF and MAPP promotes electron transmission efficiency and electromagnetic (EM) wave dissipation through multiple absorbtion and reflection. Compared with the PU/ GF film, the electric conductivity and thermal conductivity of PU/GF/MAPP film enhanced by 57.7% and 59.3%, respectively. What's more, the PU composite film shows excellent mechanical properties, joule heating performance and high fire safety performance. Therefore, the prepared multifunctional PU film demonstrates excellent performance, and has broad application prospects in EMI shielding and thermal management of advanced microelectronic systems.
引用
收藏
页数：12
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