文献类型：期刊文献

英文题名：Multiwalled carbon nanotube/cationic cellulose nanofibril electrothermal films: mechanical, electrical, electrothermal, and cycling performances

作者：Liang, Shanqing[1] Wang, Huicong[1] Tao, Xin[1]

第一作者：梁善庆

通信作者：Liang, SQ[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Xiangshan Rd, Beijing 100091, Peoples R China

年份：2021

卷号：55

期号：6

起止页码：1711-1723

外文期刊名：WOOD SCIENCE AND TECHNOLOGY

收录：;EI(收录号：20213710888064);Scopus(收录号：2-s2.0-85114639470);WOS:【SCI-EXPANDED(收录号:WOS:000694561100002)】；

基金：This research was financially supported by the National Natural Science Foundation of China (No. 32071705) and the Special Fund of the Chinese Central Government for Basic Scientific Research Operations in Commonwealth Research Institutes (No. CAFYBB2016MB001).

语种：英文

外文关键词：Carbon films - Cellulose - Cellulose films - Electric conductivity - Electric heating - Electric utilities - Nanofibers - Nanotubes - Thermodynamic stability

摘要：Multiwalled carbon nanotube (MWCNT) and cationic cellulose nanofibril (CCNF) were used to prepare electrothermal films. The mechanical properties, thermal stability, and electric heating performance were investigated by experimental testing and numerical analysis. The results showed that the MWCNT were well dispersed in CCNF matrix. Thermal stability of film was improved, and the maximum decomposition rate was reached at 318 degrees C. The electrical conductivity increases rapidly after the MWCNT content exceeds 20 wt%, and the electrical conductivity varied from 5.8 x 10(-4) S cm(-1) and 13.66 S cm(-1) with 10-60 wt% MWCNT, the electrothermal films showed strong nonlinearity between I-V and P-V. For the film with 60 wt% MWCNT, the maximum electric power was 3.57 W. The maximum temperature was 93.4 degrees C and the temperature increased by 279.7% compared with 20% MWCNT content at an applied voltage of 12 V. The average characteristic growth time constant and heat transferred by radiation and convection were 37.24 s and 35.17 mW degrees C-1, respectively. Therefore, the electrothermal films have a shorter heating parameter and lower electric power consumption as well as excellent thermal cycling stability.