| GMA熔融接枝EPDM/NR共混物的动态硫化 |
| Study on Dynamic Vulcanization of EPDM-g-GMA/NR Blends |
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| DOI： |
| 中文关键词: EPDM NR 接枝反应 GMA 动态硫化 共混 |
| 英文关键词: EPDM NR graft GMA dynamic vulcanization blend |
| 基金项目:国家自然科学基金资助项目 |
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| 中文摘要: |
| 研究了甲基丙烯酸缩水甘油酯(GMA)熔融接枝EPDM(EPDM-g-GMA)与NR共混物的动态硫化。考察了GMA用量、交联剂品种和用量以及动态硫化工艺条件对EPDM-g-GMA/NR动态硫化共混物力学性能的影响。结果表明：与直接静态硫化物相比，动态硫化物的拉伸强度提高了48.2%，热氧老化性能也得到了明显的改善；GMA用量为3～5份、二乙烯三胺(DETA)用量为0.3份时，动态硫化共混物的力学性能较好；动态硫化的工艺条件对共混物性能无明显影响。另外，红外光谱测试表明，EPDM确实成功接枝了GMA。 |
| 英文摘要: |
| The dynamic vulcanization of EPDM-g-GMA(glycidyl methacrylate)/NR blends were studied.The influence of the amount of GMA，the type and amount of crosslinking agent and the dynamic vulcanizing conditions on the physical properties of EPDM-g-GMA/NR blends was investigated.The results showed that the tensile strength of the dynamically vulcanized blend was 48.2% higher than that of statically vulcanized blend，and the thermal oxygen aging property also improved significantly；the better physical properties of the dynamically vulcanized blends were obtained when 3～5 phr of GMA and 0.3 phr DETA were used；and the dynamic vulcanizing conditions had little influence on the properties of the blends.It was confirmed by the infrared spectrum that GMA did graft onto EPDM. |
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