Modeling decomposition kinetics of OBSH as blowing agent for cellular EPDM rubber

摘要

The decomposition of p',p-oxybis(benzene sulfonylhydrazide) (OBSH) and its behavior once mixed with additives and rubber compounds were studied by thermal analysis. Differential scanning calorimetry (DSC) and thermogravimetry (TGA) were used to understand and characterize the exothermic reaction. Different kinetic models are evaluated following a non-linear least-squares minimization approach, thereby obtaining activation energies and reaction parameters. The autocatalytic Kamal-Sourour model shows better performance and allows a better description of the kinetics resulting in the most suitable option for OBSH kinetics in elasto-meric foams processes.