| 发泡剂H的活化机理及其对天然橡胶发泡的影响 |
| Study on Activation Mechanism of Blowing Agent H and Its Effects on Foaming of NR |
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| DOI： |
| 中文关键词: 发泡剂 尿素 天然橡胶 分解特性 发泡性能 |
| 英文关键词: blowing agent urea NR decomposition characteristics foaming property |
| 基金项目:上海市科委科研计划项目（08DZ1170104） |
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| 中文摘要: |
| 研究发泡剂H与尿素的相互作用机理以及两者并用对天然橡胶（NR）硫化和发泡的影响。结果表明：发泡剂H与尿素并用时的分解历程与它们各自单用时不同，两者反应温度在130～180 ℃之间，峰值温度约为150 ℃；发泡剂H/尿素并用比在等当量或尿素稍过量时效果最佳，两者对NR的硫化都有明显的促进作用；尿素的分散性对发泡体的泡孔均匀性影响显著。 |
| 英文摘要: |
| The mechanism of the interaction between blowing agent H and urea，and their effects on the vulcanization and foaming property of NR were investigated.The results showed that，the decomposition course of blowing agent H/urea blend was different from their own decomposition reactions.The reaction temperature range was from 130 ℃ to 180 ℃，and the decomposition peak temperature was about 150 ℃.With equivalent blending ratio or with slightly higher urea level，the foaming effect was the best，and both blowing agent H and urea had significant accelerating effects on the vulcanization of NR.The dispersion of urea had significant effect on the pore uniformity of NR foam. |
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