In this study, the structure-properties relationship between the thermal factors of BR/SBR blends [normalize factor , and the maximum peak temperature difference of thermal decomposition of BR and SBR with their aging time (1 to 40 days) was demonstrated using DTG profile of uncured compounds. The correlation between these two thermal factors with aging time yielded a linear equation with an acceptable correlation coefficient (R2 ≥ 0.95). By the obtained linear model the aging time of rubber compounds based on BR / SBR was predicted. In the second step, the curing behavior and mechanical characteristics of tire tread formulation based on BR/SBR were forecasted using the aging time of compounds, without time-consuming and costly tests. In all cases, the accuracy and reproducibility of obtained data were evaluated.
Keywords:
BR/SBR; DTG profile; Aging; Properties; Structure-Properties relation