| Influence of mixing process for SBR/HAF on properties of vulcanizate |
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| DOI： |
| Key Words: carbon black-filled powdered SBR；SBR latex/carbon black coprecipitation rubber；bale SBR/carbon black mix；mechanical property；tensile fracture behavior |
| Author Name | Affiliation | | HU Hong-jun | South China University of Technology | | WANG Lian-shi | South China University of Technology | | ZHOU Yi-yu | South China University of Technology |
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| Abstract: |
| The mechanical properties of the vulcanizates prepared by HAF-filled powdered SBR[P(SBR/HAF)]，SBR latex/HAF coprecipitation (ESBR/HAF)and bale SBR/HAF (MSBR/HAF) mixes respectively were investigated.The results showed that with the same addition level of carbon black，the values of modulus and tensile strength for MSBR/HAF，P(SBR/HAF)and ESBR/HAF vulcanizates were in the order of the first >the second >the third，the tear strength and the tensile set at break were in the order of the third >the second >the first.It was found through the observation of the
surface morphology at tensile fracture by SEM that the fracture behavior of MSBR/HAF vulcanizate was the rubber matrix cavitation caused by microcrack，that of P(SBR/HAF)was both the rubber matrix cavitation caused microcrack and the crack growth and branching，and that of ESBR/HAF was the crack grow th and branching. |
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