| Study on Factors Affecting Thermal Decomposition of Blowing Agent H |
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| DOI： |
| Key Words: blowing agent；N；N'-dinitroso pentamethylene tetramine；decomposition kinetics；cellular rubber |
| Author Name | Affiliation | | Peng Zonglin | Department of Applied Chemistry，Shanghai Jiaotong Unlversity | | Zhang Yinxi | Department of Applied Chemistry，Shanghai Jiaotong Unlversity |
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| Abstract: |
| The decomposition characteristics of blowing agent H(N，N'-dinitroso pentamethylene tetramine) in rubber medium was investigated.The results showed that the main factors affecting decomposition included the types of rubber and additive and the temperature.The decomposition temperature(Td) of H in NR or emulsion-polymerized rubbers(as low as 110一14O℃) was lower than that in solution-polymerized rubbers(in the range of 170一200℃).Td of H could be decreased to 130℃ by the presence of urea.Pentaerythritol and zinc stearate also made Td decrease to some extent.The higher the temperature，the faster the decomposition of blowing agent H.The decomposition kinetics of H was studied and the activation energy of decomposition was calculated. |
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