| 影响发泡剂H热分解的因素探讨 |
| Study on Factors Affecting Thermal Decomposition of Blowing Agent H |
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| DOI： |
| 中文关键词: 发泡剂 N，N’一二亚硝基五亚甲基四胺 分解动力学 海绵橡胶 |
| 英文关键词: blowing agent N N'-dinitroso pentamethylene tetramine decomposition kinetics cellular rubber |
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| 中文摘要: |
| 测试了发泡剂H在橡胶介质中的分解特性，发现影响发泡剂分解的主要因素有橡胶介质、发泡助剂和温度。发泡剂H在天然橡胶和乳液聚合的橡胶中的起始分解温度较低(Td)，而在溶液聚合的橡胶中Td较高；尿素能大大降低发泡剂H的分解温度，季戊四醇和硬脂酸锌也使发泡剂H的分解温度明显降低；温度越高，发泡剂H的分解越快。研究了发泡剂H的分解动力学，求出了发泡剂H的分解活化能。 |
| 英文摘要: |
| 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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