文献类型：期刊文献

英文题名：Investigation of humidity-heat aging resistance of a soy protein adhesive fabricated by soybean meal and lignin-based polymer

作者：Chen, Shiqing[1] Fan, Dongbin[1] Gui, Chengsheng[2]

第一作者：Chen, Shiqing

通信作者：Gui, CS[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[2]Zhejiang Shenghua Yunfeng Greeneo Co Ltd, Huzhou 315200, Peoples R China

年份：2023

卷号：120

外文期刊名：POLYMER TESTING

收录：;EI(收录号：20231013667028);Scopus(收录号：2-s2.0-85149174474);WOS:【SCI-EXPANDED(收录号:WOS:000949440400001)】；

基金：This work was financially supported by the special funds for basic scientific research business expenses of central public welfare scientific research institutes [CAFYBB2020MB001] .

语种：英文

外文关键词：Soy-based adhesive; Lignin-based polymer; Humidity-heat aging treatment; Wet shear strength

摘要：The excellent bonding strength and durability of bio-based protein adhesives are key to expand their practical applications in wood industry. The durability of adhesive is affected by environmental exposure such as tem-perature and humidity, but there are limited reports about the durability of the protein adhesive. Herein, a soybean meal (SM)-based adhesive modified by epoxy polymer of lignin (EPL) was prepared and then treated under high humidity-heat aging conditions (90 +/- 5% RH and 50 +/- 2 degrees C) for 1200 h to assess the durability of adhesive. The results showed that the main structure and thermal stability properties of SM/EPL adhesive were affected by the humidity-heat aging treatment, and the thermal stability of adhesive remained good. The wet shear strength of the adhesive decreased with the aging time, which was because that the hydrolysis, oxidation, and hydrogen bonds dissociation of the adhesive reduced the cross-linking density and intermolecular force in the adhesive system. Furthermore, there was no mildew occurred on the SM/EPL adhesive, and the bonding strength of SM/EPL adhesive still met the interior-use plywood requirement (>= 0.7 MPa) after being treated for 1200 h. This study demonstrates that the wood products fabricated by SM/EPL adhesive are durable in high humidity-heat environment.