聚氨酯反应注射成型中B组分的合成

Synthesis of Component B Used in PUR RIM

本文研究了多元醇3M146和1M104混合与纯 MDH 反应合成聚氨酯塑料和弹性体反应注射成型中 B 组分的方法。发现 B 组分的粘度与温度的关系符合阿累尼乌斯方程,并求出了方程申的常数和流动活化能。也研究了粘度与 B 组分中异氰酸酯含量的关系.同时再一次证明了用多元醇液化 MDI 的必要条件是所用醇的溶解度参数与纯 MDI 的溶解度参数差为2左右。

In this paper,some methods of synthesizing component B in FUR RIM fromPolyols 3M146 and 1M104 mixtures with pure MDI are investigated.It is foundthat the relationshinp between the viscosity and the temperature of the component Baccords with Arrhenius equation.The value of constant A,B and the flow activi-ted energy are calculated.The relationship between the viscosity and the contentsof NCO in the component B is also investigated.Meanwhile,it is proved thatnecessary condition to liquify MDI by polyol is about 2 as difference of thesolubility parameter between the concerned polyol snd pure MDI.