摘要
按酚醛树脂的制备工艺,用NaOH为催化剂,在碱性条件下制备了U/P质量比为150%～158%的苯酚改性脲醛树脂。该胶制备工艺简单,反应平稳,操作易控制,再现性好,成本较低,贮存期达30d。该PUF胶压制的杨木三合板,桉-杨实木复合地板,胶合强度符合Ⅱ类胶合板的要求,甲醛释放量<0.5mg/L,100℃沸水煮6h浸渍剥离为0。
The phenol-urea-formaldehyde （PUF） resin for E0 degree flooring board were synthesized by alkali traditional process and using NaOH as the catalyst, with a U/P mass ratio of 150% - 158% and a F/ （P＋U） mole ratio of 0.97 or 0.99. The adhesive production had many advantages of simple manufacture process, smooth reacting, easy operation and good reproducibility. The resulted PUF resins had such as low free formaldehyde, low free phenol, low cost and long reserving time（〉30 days）. The bond strength of PUF resin bonded composition flooring could meet the requirements of type II plywood, the formaldehyde emission was less than 0.Smg/L, and no peeling off occurred in immersion test （PUF bonded samples immersed in 100℃ boiling water for 6hr）.
出处
《林产工业》
北大核心
2012年第4期13-16,共4页
China Forest Products Industry
