摘要
聚乙二醇(PEG-1000)与甲基六氢苯酐(MHHPA)在催化剂XCT-cat81的存在下生成聚酯多元醇,再在催化剂XCT-cat57存在下,再与二苯基甲基-4,4’-二异氰酸酯(MDI)反应生成聚氨酯预聚体,最后用苯酚封端制得水性聚氨酯。使用FTIR红外光谱仪分别对聚酯多元醇和水性聚氨酯进行了表征。使用大分子聚胺XCT-802及低分子二乙烯三胺(DETA)两种固化剂研究了水性聚氨酯封端基的激活反应,讨论了二种固化剂在不同固化温度与固化时间对水性聚氨酯木材黏结强度的影响。
A kind of polyester type polyol was synthesized by the reaction between polyethylene glycol （PEG- 1000 ） and methyl hexahydrophthalic anhydride （MHHPA） in the presence of catalyst XCT-cat 81. The waterborne pol- yurethane （WPU） was prepared by the reaction between the resulting polyol and MDI in the presence of catalyst XCT- cat 57, and then two end groups of the resulting product was reacted with phenol. The polyester type polyol and water- borne polyurethane were characterized by FTIR spectroscopy. The activation of the WPU was investigated using poly- amine XCT-802 and DETA as curing agent, respectively. The adhesion strength from the WPU on wood sample was ex- amined using two curing agents at different curing temperature and curing time.
出处
《精细与专用化学品》
CAS
2012年第10期25-28,共4页
Fine and Specialty Chemicals
关键词
聚酯型多元醇
水性聚氨酯
激活反应
固化剂
黏结强度
polyester type polyol
waterborne polyurethane
activation
curing agent
adhesion strength
