封闭异氰酸酯改性脲醛树脂制备胶合板  

Preparation of the Plywood Using UF Resin Modified with Blocked Isocyanate as Bonding Agent

作　　者：张彦华[1] 顾继友[1] 谭海彦[1] 李炜[2] 

机构地区：[1]东北林业大学材料学院 [2]国家林业局林产工业规划设计院,北京100010

出　　处：《林产工业》2009年第6期17-19,共3页China Forest Products Industry

基　　金：国家自然科学基金项目(项目号:No.30871984);哈尔滨市公关项目:2008AA4BG006;东北林业大学青年科研基金;项目号是09013

摘　　要：采用亚硫酸氢钠封闭异氰酸酯改性UF树脂制备胶合板,研究了制板用混合胶液的比例、热压时间、热压温度等热压工艺对胶合板性能的影响,结果表明,在UF/PAPI=100/10、热压温度为110℃、热压时间为4min时,所制备胶合板的甲醛释放量达到国家标准,并且具有较高的胶合性能。The plywood was prepared using the UF resin modified with isocyanate blocked by sodium bisulfate as adhesive. And the effects of the ratio of UF resin to isocyanate, hot press temperature, hot press time on the properties of the plywood were also studied. The results showed that under the conditions of UF/PAPI = 100/10, hot press temperature of 110℃ and hot press time of 4min, the bonding strength of the plywood was improved obviously and the formaldehyde release from the plywood could meet the requirements specified in national standard.

关 键 词：封闭异氰酸酯 脲醛树脂 胶合板 DSC 

分 类 号：TQ433.431[化学工程] TS653.3[轻工技术与工程]