环境友好型胶合板用脲醛树脂胶黏剂的研究

Study on Environment Friendly Urea-Formaldehyde Resin Adhesives for Plywood Manufacture

对不同固化体系下低摩尔比脲醛树脂胶黏剂的固化时间、适用期进行探讨,研究其对胶接性能、甲醛释放量的影响。结果表明:不同固化体系,物理力学性能不同,胶接强度均达到国家标准II类板的要求,甲醛释放量均达到E0级。当使用NQ-J0-1,n甲醛∶n脲素=1∶1,V固化剂∶m胶液=5 mL∶100 g,性能最佳。

The curing time and adaptability phase of the urea formaldehyde（UF） resin adhesive at low mole of UF were studied under different curing systems,and the influence of UF upon the bonding strength and quantity of formaldehyde emission level were analyzed.The study results showed that although the different curing system resulted in different physical mechanic performance,the bonding properties of the adhesives all reached the standard of GB/T 9846.3—2004 Grade II,and the formaldehyde emission level all accorded with the standard of GB/T 9846.3—2004 E0 Grade.The best mechanical properties could be obtained by using the NO-J0-1,when the n（F）∶n（U） ratio was 1∶1 and the V（a curing system）∶m（glue） ratio was 5 mL ∶100 g.