摘要
角蛋白改性脲醛树脂胶的试验结果表明,利用角蛋白与脲醛树脂进行共聚反应,可以得到环保型的改性脲醛树脂胶;最佳工艺条件为:摩尔比为1.31.0;角蛋白加入时间在第3次尿素投料后,角蛋白加入量为尿素的5%。采用角蛋白改性脲醛胶压制的胶合板,胶合强度达到了国家标准GB/T9846—2004Ⅱ类板胶合要求,其甲醛释放量也达到了国家标准E1级胶合板用胶标准。
An environmental friendly modified urea - formaldehyde resin could be produced through the copoly- merization reaction of urea - formaldehyde resin with keratin. The results showed that the optimum molar ratio was 1.3 ： 1. Equal to 5% urea -formaldehyde resin of keratin was added after the third feeding of urea. The bonding strength of plywood which was made of modified urea - formaldehyde resin met the standard of GB/ T9846--2004 Ⅱ. The formaldehyde emission accorded with the E1 grade of national standard.
出处
《吉林林业科技》
2012年第3期30-32,35,共4页
Journal of Jilin Forestry Science and Technology
关键词
角蛋白
脲醛树脂胶
甲醛释放量
胶合强度
keratin, urea- formaldehyde resin, formaldehyde emlssion,bonding strength
