Li Xiaona, Chen Mingsong, Zhang Jizhi, Gao Qiang, Zhang Shifeng, Li Jianzhang
Ministry of Education (MOE) Key Laboratory of Wooden Material Science and Application, Beijing Key Laboratory of Wood Science and Engineering, School of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China.
Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (MOE), School of Materials Science and Engineering, Shandong University, Jinan 250061, China.
Polymers (Basel). 2017 Sep 20;9(9):463. doi: 10.3390/polym9090463.
An eco-friendly soybean meal-based adhesive (SM adhesive) was developed by incorporating ethylene glycol diglycidyl ether (EGDE) and nanocrystalline cellulose (NCC). In order to introduce epoxy groups, NCC was modified by KH560 (denoted as MNCC). The functional groups, thermal stability, and cross section of the resultant adhesive were characterized. Three-ply plywood was fabricated to measure the dry and wet shear strength of the adhesive. The experimental results showed that the epoxy groups on MNCC reacted with the carboxyl group of SM protein molecules, forming a crosslinking network and a ductile adhesive layer. As a result, compared with the SM adhesive modified by EGDE, the thermal stability of the adhesive with MNCC was improved and the wet shear strength was increased to 1.08 MPa.
通过加入乙二醇二缩水甘油醚（EGDE）和纳米晶纤维素（NCC），开发了一种环保型豆粕基胶粘剂（SM胶粘剂）。为了引入环氧基团，用KH560对NCC进行改性（记为MNCC）。对所得胶粘剂的官能团、热稳定性和横截面进行了表征。制备了三层胶合板以测量胶粘剂的干剪切强度和湿剪切强度。实验结果表明，MNCC上的环氧基团与SM蛋白分子的羧基反应，形成交联网络和韧性胶粘剂层。结果，与用EGDE改性的SM胶粘剂相比，含MNCC的胶粘剂的热稳定性得到提高，湿剪切强度提高到1.08MPa。
