Development of Carbon Nanotubes–Graphene–Polydimethylsiloxane Composite Film with Excellent Electrothermal Performance

Yaodong Da, Youxin Wang, Heming Dong (), Qi Shang, Yu Zhang, Huashan Wang, Qian Du and Jianmin Gao
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Yaodong Da: China Institute of Special Equipment Inspection, Beijing 100029, China
Youxin Wang: TianJin Lishen Battery Joint-Stock Co., Ltd., Tianjin 300384, China
Heming Dong: School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Qi Shang: School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Yu Zhang: School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Huashan Wang: School of Vehicles and Energy, Yanshan University, Qinhuangdao 066004, China
Qian Du: School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
Jianmin Gao: School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, China

Energies, 2023, vol. 17, issue 1, 1-17

Abstract: Low power density and low heating rate are the key constraints for the development of conductive polymer materials in the field of electric heating. The carbon nanotubes (CNTs)–graphene (GR)–polydimethylsiloxane (PDMS) composite film was prepared by vacuum filtration and spin coating to solve the problem in this study. Moreover, an AC electric field was used to orient the CNTs to enhance the electrothermal performance. The structure and properties of composite films were analyzed. The results show that the composite film with CNT:GR = 2:1 has the lowest permeation threshold, and can heat up within 30 s and stabilize at 260 °C at 10 V. The electric field-oriented CNTs reduced the insulating polymer layer, increasing the heating rate of the composite film by 1.2 times, and increasing the theoretical thermal conductivity. The flexible electrothermal composite film prepared in this study can be used in thermal insulation, deicing, and wearable electronic devices.

Keywords: carbon nanotube; PDMS; bilayer film; electric field orientation; electric heating; thermal conductivity (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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