文献类型：期刊文献

英文题名：Influence of silane surface modification of veneer on interfacial adhesion of wood-plastic plywood

作者：Fang, Lu[1] Chang, Liang[1] Guo, Wen-jing[1] Chen, Yongping[1] Wang, Zheng[1]

通信作者：Guo, WJ[1]

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

年份：2014

卷号：288

起止页码：682-689

外文期刊名：APPLIED SURFACE SCIENCE

收录：;EI(收录号：20134917049512);Scopus(收录号：2-s2.0-84888433830);WOS:【SCI-EXPANDED(收录号:WOS:000327493400094)】；

基金：This work was supported by the Special Scientific Research of the Forest Public Welfare Industry [Grant number 201004004].

语种：英文

外文关键词：Wood-plastic plywood; Interfacial adhesion; Silane agent; Surface properties

摘要：In this study, wood-plastic plywood was fabricated with high density polyethylene (HDPE) film and poplar veneer by hot-pressing. To improve the interfacial adhesion between the wood veneer and HDPE film, silane A-171 (vinyltrimethoxysilane) was used to treat the surface of poplar veneer by spraying. The effects of silane agent on the veneer surface properties as well as the physical-mechanical performance of wood-plastic plywood were evaluated. The adsorption of several prehydrolyzed alkoxysilanes onto the veneer surface and the existence of a covalent bonding between the wood veneer and silane agent were confirmed using FTIR, XPS and contact angle. Silane surface treatment resulted in enhancement of shear strength and water resistance. When one layer HDPE film was used as adhesive, it caused 293.2% increase in shear strength, 34.6% and 40.8% reduction in water absorption and thickness swelling, respectively. In addition, the wood failure also increased from 5% to 100% due to the silane modification. Dynamic mechanical analysis (DMA) results showed that treated plywood have higher storage modulus, lower tan delta peak value and lagged temperature for tan delta peak value with respect to untreated plywood. Experimental results of interfacial morphology by SEM further revealed better interaction between silane A-171 treated veneer and HDPE film. (C) 2013 Elsevier B. V. All rights reserved.