文献类型：期刊文献

英文题名：Effects of wet treatment on bonding strength and electrothermal performance of electrothermal plywood bonded with emulsion polymer-isocyanate adhesive

作者：Tao, Xin[1] Tian, Dongxue[1] Liang, Shanqing[1,2] Zhang, Longfei[1] Li, Shanming[1] Fu, Feng[1]

第一作者：Tao, Xin

通信作者：Liang, SQ[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing, Peoples R China;[2]Chinese Acad Forestry, Res Inst Wood Ind, Xiangshan Rd, Beijing 100091, Peoples R China

年份：0

外文期刊名：POLYMER COMPOSITES

收录：;EI(收录号：20224813173929);Scopus(收录号：2-s2.0-85142602097);WOS:【SCI-EXPANDED(收录号:WOS:000890793500001)】；

基金：National Natural Science Foundation of China, Grant/Award Number: 32071705;Research Project of Chinese Technology Innovation Alliance of Wood/Bamboo Industry, Grant/Award Number: TIAWBI2021-04

语种：英文

外文关键词：carbon fiber paper; electrothermal performance; electrothermal plywood; emulsion polymer-isocyanate adhesive; wet treatment

摘要：To create a green, safe, and aldehyde-free indoor heating environment, an eco-friendly emulsion polymer-isocyanate (EPI) adhesive was applied to the preparation of electrothermal plywood with built-in carbon fiber paper. The optimized process parameters of electrothermal plywood were 0.9 MPa, 120?, 6 min, and 200 g/m(2) for hot-pressing pressure, temperature, time, and glue spread amount, respectively. After water immersion for 24 h, the bonding strength of wet-treated electrothermal plywood decreased to 0.89 MPa. The pull-out cracks of the carbon fiber paper were the main fracture form of the wet-treated electrothermal plywood, and the wood failure percentage was 0%-10% under the tensile load. Hydrolysis of the adhesive layer of the wet-treated electrothermal plywood occurred. The relative C and N contents in the wet-treated electrothermal plywood decreased by 6.1% and 25.3%, respectively. Moreover, the resistance of the wet-treated electrothermal plywood increased by 273.4% because the internal conductive path was interrupted during the intrusion of the water molecules. The highest electric-to-radiant transfer efficiency of the electrothermal plywood was 72.4%, with a power density of 200 W/m(2). In conclusion, wet treatment has a significant effect on the bonding strength and electrothermal performance of the electrothermal plywood bonded with EPI adhesive.