环氧化天然橡胶/PVC共混物的热氧降解 |
Thermo-oxidative degradation of ENR/PVC blend |
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DOI: |
中文关键词: 环氧化天然橡胶 PVC 共混 热氧降解 |
英文关键词: ENR PVC blend thermo-oxidative degradation |
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中文摘要: |
采用热重-差示热重分析和差热分析研究了环氧化天然橡胶(ENR)/PVC共混物的热氧降解过程。结果表明,炭黑补强的ENR/PVC共混物的热氧降解过程分为3个阶段,第1阶段主要是PVC脱氯化氢,而氯化氢引起ENR发生催化氧化反应而放热,且该阶段明显受到ENR/PVC共混比的影响,随着PVC用量的增大,共混物的热氧稳定性下降。 |
英文摘要: |
The thermo-oxidative degradation of ENR/PVC blend was investigated by TG-DTG and DTA.The results showed that the degradation process of ENR/PVC blend filled with carbon black consisted of three steps;the exothermic HCl-catalysed oxidative reaction of ENRwas resulted from giving-off of HCl during the first step;and the first step of degradation process was affected by the blending ratio of ENR/PVC,the thermo-oxidative aging property decreased as the proportion of PVC increased. |
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