The weak and strong interaction between carbon black (CB) and polymer was separated by means of solution-soaking method and high-speed centrifugation method for CB filled BR compounds. The relationship between multi-interaction of CB filled BR composites and CB concentration was investigated and a multi-interaction evolution model between CB and polymer was proposed with increasing of CB concentration

based on the relationship between different bound rubber contents and relative storage modulus. The results showed that the glass transition temperature (Tg) and crystallization melting peak

which existed in CB gelⅠ

disappeared absolutely in CB gel II. It meant that the glass transition temperature and crystallization behavior

which were detected in CB gelⅠ

were attributed to the weak interaction between CB and polymer. The features of samples and measurement method should be noticed when glass transition temperature was used to indicate filler-polymer interaction. The concentration of BdR II (bound rubber II) increased linearly with increasing of CB concentration

when CB concentration was not more than 50 phr

and BdR I concentration was affected significantly by CB concentration. The multi-interaction of CB filled BR composites could be described by means of an overlapping model. There were BdR III layer overlap

BdR II layer overlapping with BdR III layer

and BdR II layer overlap

when the CB concentration was 25~35 phr

50~55 phr and 70~80 phr

respectively.