氰酸酯
氰酸盐
催化作用
差示扫描量热法
钴
等温过程
高分子化学
双酚A
热稳定性
壬基酚
单体
化学
动力学
材料科学
核化学
无机化学
有机化学
聚合物
热力学
环氧树脂
物理
环境化学
量子力学
作者
Clara M. Gómez,Ileana B. Recalde,Iñaki Mondragón
标识
DOI:10.1016/j.eurpolymj.2005.05.005
摘要
The isothermal cure of a dicyanate ester monomer has been investigated by differential scanning calorimetry (DSC) in the presence of different quantities of a catalyst system formed by nonylphenol (NP) and cobalt (II) acetylacetonate (Co(AcAc)2). Two sets of experiences were studied. Firstly, the NP composition was varied from 0 to 10 per hundred resin (phr) and secondly, the Co(AcAc)2 loadings were changed at 2 phr of NP. It has been observed that the cyanate conversion increases significantly after the first addition of the metal catalyst and, also, at the same time the thermal stability improves. Moreover, the kinetic data have been fitted with a second-order equation respect to the cyanate conversion in the kinetically conversion regime. Also, both the activation energies and the kinetic order respect to the NP and the Co(AcAc)2 have been determined.
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