摘要
采用一步法将聚醚多元醇、扩链剂与异氰酸酯反应,制备了木材用单组分湿固化聚氨酯胶粘剂。对样品性能进行分析,探究较优的—NCO/—OH(R值)。研究结果表明:R值为10.38时,胶粘剂应用在桦木上的粘接强度相对最佳,此时胶粘剂对桦木的润湿性、热稳定性和开放时间均较为优异。
One-component moisture curing polyurethane adhesive for wood was prepared by one-step reaction of polyether polyol,chain extender and isocyanate.The properties of samples were analyzed,and the optimal—NCO/—OH(R value)was explored.The research results showed that when R value was 10.38,the adhesive applied to birch wood had relatively best bonding strength,and at this time the adhesive had excellent wettability,thermal stability and open time performance on birch wood.
作者
顾皞
许甄
顾继友
Gu Hao;Xu Zhen;Gu Jiyou(Northeast Forestry University,Harbin 150000,Heilongjiang,China)
出处
《中国胶粘剂》
CAS
2022年第10期23-28,共6页
China Adhesives
