| Scorch safety of rubber compound during internal mixing |
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| DOI： |
| Key Words: mixing scorch safety；NR；SBR；BR；NBR |
| Author Name | Affiliation | | LIN Ya ling | South China University of Technology | | ZHANG An qiang | South China University of Technology | | WANG Lian shi | South China University of Technology | | JIANG Zhi jie | South China University of Technology | | ZHOU Yi yu | South China University of Technology |
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| Abstract: |
| The mixing scorch safety (ts and Δt) of four kinds of rubber compounds (NR，SBR，BR and NBR) was measured using a Brabender torque rheometer in a wide temperature range (100~140 ℃) and rotor speed range (20~80 rpm)，and compared to Mooney scorch safety (t5 and Δt30).It was pointed out that the real scorch safety of rubber compound during mixing couldn’t be reflected by Mooney scorch safety.The model for mixing scorch safety of four rubber compounds in function of mixing temperature and rotor speed was established by fitting the data from the test.It was found by the square error and regression analyses that the dependance of mixing scorch safety on mixing temperature and rotor speed could be well characterized by the model. |
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