Study on curing kinetics of bisphenol A dicyanate/styrene and properties of the cured resin

The isothermal cure of a dicyanate ester monomer by Fourier transform infrared spectroscopy (FT- IR) has been investigated.The degree of cyanate conversion and the kinetic parameters have been determined for organic tin catalyzed cyanate and styrene systems at different curing temperatures.The cyanate conversion increases with the increment of curing temperature and with the addition of catalyst.Styrene has a little effect on cyanate in the absence of catalyst,but styrene is very catalytic for eyanate when in presence of organic-tin catalyst.In all the systems studied,the rate of reaction showed a first-order dependence on the cyanate concentration in the kinetically controlled stage.The impact strength and flexural strength of modified cyanate systems increased by 45.3% and 18.7% than unmodified cyanate ester resin,respectively.