2011•Advanced materials researchOpen access

Studies on Curing Kinetics Parameter of TDI-PPG-MOCA Polyurethane by FTIR

Qing Wen, Chao Yu, Jin Hua Zhu, Tian Yu Liu

Abstract

The curing process of polyurethanes was investigated with FTIR method. The curves of conversion (α)VS curing reaction time (t) at different temperatures were obtained .The curing reaction of the system was found to be second order reaction. The reaction rate constants and activation energy had been measured. Effect of the use lever of curing agent and temperatures on curing reaction was discussed. The results showed that when the mole ratio of NCO/OH is smaller than 1, the crosslinking reaction take place at high temperature.

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Key concepts: Curing (chemistry), Activation energy, Polyurethane, Fourier transform infrared spectroscopy, Order of reaction, Materials science, Kinetics, Chemical kinetics