摘要
采用低成本、富含活性基团的无甲醛尿素-环氧树脂(代号为HN)为共交联改性剂,与交联剂聚酰胺多胺-环氧氯丙烷(PAE)树脂共混制备大豆蛋白胶。红外光谱(FTIR)表征与热重分析表明:HN树脂能与PAE树脂有效共交联,同时HN-PAE树脂能与大豆蛋白上的活性基团反应,提高大豆蛋白胶的热稳定性。通过胶合板性能测试对HN树脂用量和豆粉用量进行配方优化,将HN-PAE复合树脂溶液(HN树脂质量分数70%)稀释至质量分数为6%,豆粉相对用量为30%~35%时,制备的Ⅱ类胶合板的胶合强度满足GB/T 9846-2015《普通胶合板》的要求。
A low-cost,formaldehyde-free,and reactive incremental modifier,the urea-epoxy resin(code name:HN),which was made from urea and epoxy monomer,was blended with the crosslinker polyamidoamine epichlorohydrin(PAE)resin to produce the soybean adhesive.FTIR and TGA analyses indicated that HN resin effectively co-crosslink with PAE resin.The blended HN-PAE resin react with active groups from the soybean protein,by which improved the thermal stability of the soybean adhesive.Based on the plywood property evaluation,the preferable content ratio of resin HN and soybean flour were optimized,when the HN-PAE resin(HN mass fraction was 70%)solution was diluted to 6%,and the relative dosage of soybean flour was 30%~35%,the bonding strength of Type II plywood made with the optimized soybean adhesive fully met the requirements of China National Standard GB/T 9846-2015"Plywood for general use".
作者
孙博
阚雨菲
高振华
SUN Bo;KAN Yu-fei;GAO Zhen-hua(College of Material Science and Engineering,Northeast Forestry University,Harbin 150040,Heilongjiang,China)
出处
《木材科学与技术》
北大核心
2022年第2期54-59,共6页
Chinese Journal of Wood Science and Technology
基金
黑龙江省重点研发计划指导类项目“低成本无甲醛大豆胶黏剂的产业化应用技术研究”(GZ20210111)。
