A theoretical model for the reaction kinetic of the urethane and branchingreaction of polyurethane prepolymer is proposed.
提出一种新的测试聚氨酯预聚物合成反应过程中氨酯化反应和支化反应的动力学参数的理论模型 。
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The unimolecular decomposition and dehydrogenation of ethanol initiate the branched chain reaction, and the 3 isomers of radical C2H5O determine the direction of the reaction chain branching.
Branching degree of the polyethylenes and the content of methyl branch rise quickly with reaction temperature, but the content of long branches drops remarkably.