在实验室制备得到树脂型甲醛捕捉剂,考察了甲醛捕捉剂与不同F/U摩尔比脲醛树脂混合使用后制备得到的刨花板力学性能及甲醛释放量。研究结果表明,甲醛捕捉剂的添加能有效降低刨花板的甲醛释放量,但对混合树脂的最终力学强度性能不利。混合树脂的摩尔比F/U是决定相关刨花板力学性能及甲醛释放量的主要因素。当与摩尔比F/U=1的脲醛树脂混合使用时,添加占总施胶量5%甲醛捕捉剂的刨花板甲醛释放量可达到E1级,同时,内结合强度值满足室内级国家标准要求。与摩尔比F/U=1.2的脲醛树脂混合使用,当甲醛捕捉剂的添加量为20%时,刨花板性能达标。
A resin-based formaldehyde scavenger was prepared in laboratory and mixed with urea-formaldehyde (UF) resins with different F/U molar ratios. Its influence on mechanical performances and formaldehyde emission of UF-bonded parti- cleboard was investigated. The results showed that the formaldehyde scavenger could effectively reduce the formaldehyde e- mission from particleboard, but had a negative influence on board strengths. The F/U molar ratio was the main factor that influenced both above properties. When the F/U ratio was 1:1 and the formaldehyde scavenger content was 5% of the glue consumption, the formaldehyde emission from particleboard was at E1 level and the internal bond met national standard for indoor panel. For the F/U ratio of 1.2:1 and formaldehyde scavenger content of 20%, the performance of particleboard could met with the requirements of national standard.