The kinetics of UV curable thiol-hyperbranched polysilazanes (HBP) was studied by differential photo-scanning calorimeter (DPC) technology. The effects of photo initiator concentration [I], light intensity I0and temperature on the UV curing rate and the final unsaturated double bond conversion of thiol-HBP were investigated. The results indicate that the dependence of polymerization rate Rp on [I] and I0, respectively, was found to fit with theoretical predictions very well at [I] no more than 0.50wt% and I0lower than 19.40mW/cm2. The kinetic parameters were calculated by autocatalytic model, and correspondingly, the total apparent reaction exponent and apparent activation energy are 8.76 and 13.97kJ/mol, respectively.

The relationship between the SBS modifier types and asphalt components on the effect of modified asphalt properties was discussed in this paper. Higher block ratio, higher molecular weight and star-like structure of SBS can improve modified asphalt high temperature properties. Colloid content decrease leading the processing easier, result stability decline. Our research group invented a chemical titration combined with fluorescence microscopic analysis detection method monitoring SBS modifier dosage. This method applied in highway construction site, the effect is significant.

Curing kinetics of MEP-15/593 system and MEP-15/593/660 system is studied by means of differential scanning calorimetry (DSC). Curing kinetic parameters are evaluated and the relationship between diluent 660 and the curing properties is investigated. The results show that the diluent 660 can not only reduce viscosity and activation energy, but also improve the degree of cure and conversion ratio.