摘要
为了判断苯酚-尿素-甲醛(PUF)树脂中原料共缩聚反应是否发生,并确认共缩聚分子形成特点,借助13C核磁共振(13C NMR)和基质辅助激光解析电离飞行时间质谱(MALDI-TOF-MS)两种主要分析仪器,对比研究了苯酚-甲醛(PF)树脂和PUF树脂的结构特点,结果证实了PUF树脂中苯酚、尿素和甲醛3种原料之间共缩聚反应的存在,认为PUF树脂结构以PF树脂为主体,且共缩聚结构主要形成于合成反应初期。
To confirm the existence of co-condensation in phenol-urea-formaldehyde (PUF) resin and understand the development of molecular structure during the polymerization, the characteristic structure of PUF was analyzed based on the study of structure of phenol-formaldehyde (PF) resin with the help of two main instruments 13C NMR and MALDI-TOF-MS. Analysis results confirmed that the co-condensation among phenol, urea and formaldehyde indeed occurred and formed at the beginning of polymerization. The resuhs also confirmed that structure of copolymer mainly derived from PF resin.
出处
《林产化学与工业》
EI
CAS
CSCD
北大核心
2013年第1期27-31,共5页
Chemistry and Industry of Forest Products
基金
国家林业局推广项目(2010-46)
国家自然科学基金资助项目(30930074)
关键词
PUF树脂
PF树脂
结构
共缩聚
phenol-urea-formaldehyde (PUF) resin
phenol-formaldehyde resin
structure
co-condensation