摘要
以麻风树种子蛋白为原料,以三聚氰胺乙二醛(MG)树脂和环氧树脂(EPR)为交联剂,旨在为相关人造板产品尤其是胶合板制备另一种新型蛋白胶黏剂。采用红外光谱(FT-IR)、核磁共振碳谱(13C-NMR)、电喷雾电离质谱(ESI-MS)等分析其制备机理,同时通过检测蛋白胶胶合板性能,分析胶黏剂制备机理与实际应用之间的关系。结果表明,MG含有大量支链型的-NH-(CH)OH基团,与蛋白质的氨基等活性基团具有较好亲和性。环氧树脂与蛋白氨基反生反应,主要以N-1取代为主。单独以EPR或MG交联改性的蛋白胶不能同时满足Ⅰ、Ⅱ类胶合板强度要求。MG和EPR两者共同作为交联剂时,可以增加改性后麻风树种子蛋白胶黏剂的内聚强度和交联密度,使改性后蛋白胶同时满足Ⅰ、Ⅱ类胶合板胶接强度和耐水性能要求。综合改性后麻风树种子蛋白胶黏剂的制备成本和使用性能,4%三聚氰胺-乙二醛树脂+1%环氧树脂为最佳交联剂配方。
In order to develop a new kind of protein-based adhesive for man-made board products and plywood especially,seed protein of Jatropha curcas was used as basic material,and melamine glyoxal resin （MG） and epoxy resin （EPR） as friendly cross-linkers.The modified mechanism of protein-based adhesives were characterized by FT-IR, 13 C-NMR and ESI-MS.The results indicated that MG contained many -NH-（CH）OH groups,which had a good affinity with the active groups of the proteins,such as amino group.The main products between epoxy resin and amino group in the protein were given priority to replacing amino N-1.Both MG and EPR as cross-linkers could improve the cohesion strength and crosslinking density,which contributed to the bonding strength and water resistance of plywoods-Ⅰ and plywoods-Ⅱ.Considering the cost and comprehensive performances,4% MG＋1% EPR was the best combination for the preparation of Jatropha curcas seed protein-based adhesive.
作者
吴志刚
张本刚
张俊
雷洪
余丽萍
洪海林
杜官本
WU Zhi-gang;ZHANG Ben-gang;ZHANG Jun;LEI Hong;YU Li-ping;HONG Hai-lin;DU Guan-ben(College of Forestry,Guizhou University,Guiyang,Guizhou 550025,China;Yunnan Provincial Key Laboratory ofWood Adhesives and Glued Products,Southwest Forestry University,Kunming,Yunnan 650224,China)
出处
《西北林学院学报》
CSCD
北大核心
2018年第6期223-230,共8页
Journal of Northwest Forestry University
基金
贵州省林业厅项目(黔林科合[2017]14号)
贵州省教育厅项目(黔教合KY字[2017]114号)
国家自然科学基金地区基金(31660176)
贵州省科技厅项目(黔科合LH字[2017]7241号)
关键词
麻风树种子蛋白
胶黏剂
制备机理
胶合板
Jatropha curcas L.protein
adhesive
preparation mechanism
plywood
