CARBON-SILICA DUAL-PHASE FILLER, A NEW-GENERATION REINFORCING AGENT FOR RUBBER - PART I - CHARACTERIZATION

Carbon-silica dual phase filler (CSDP filler) differs in many aspects from the traditional fillers currently used in rubber compounds. Accor ding to the characterization with different analytical techniques, thi s material consists of two phases, the carbon phase with finely divide d silica domains dispersed therein. In various polymers, the CSDP fill er shows higher filler-polymer and lower filler-filler interaction, In combination with a coupling agent, abrasion resistance is comparable to its carbon black counterpart, while the viscoelastic properties of the filled rubbers are improved: the hysteresis at higher temperature is depressed drastically and that at low temperature is increased.