| 原位有机改性法EPDM/Na-MMT纳米复合材料的结构和性能 |
| Morphology and properties of EPDM/Na-MMT nanocomposites prepared with in-situ organic modification |
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| DOI： |
| 中文关键词: 原位有机改性法 EPDM 未改性蒙脱土 纳米复合材料 结构 物理性能 |
| 英文关键词: in-situ organic modification EPDM Na-MMT nanocomposite morphology physical properties |
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| 中文摘要: |
| 直接将EPDM、未改性蒙脱土(Na-MMT)和插层剂共混，制备原位有机改性法EPDM/Na-MMT纳米复合材料，研究插层剂对复合材料结构和物理性能的影响。结果表明，添加Na-MMT和插层剂对EPDM的硫化反应有延迟效应，并可降低EPDM硫化胶的交联密度；原位有机改性法EPDM/Na-MMT纳米复合材料物理性能较未改性复合材料有较大幅度的提高，可达到剥离型EPDM/有机蒙脱土纳米复合材料的水平；Na-MMT以完全剥离、插层和未插层3种微观形态共存于EPDM基体中，未插层Na-MMT的存在基本上不影响完全剥离Na-MMT片层对EPDM的补强效果。 |
| 英文摘要: |
| The EPDM/Na-MMT nanocomposites were prepared with in-situ organic modification，in which EPDM，Na-MMT and an intercalatant were directly mixed and the effects of different intercalatants on morphology and physical properties of nanocomposites were investigated.The results showed that the addition of Na-MMT and intercalatant delayed the vulcanization of EPDM and decreased the crosslink density of its vulcanizate；the physical properties of EPDM/Na-MMT nanocomposite prepared with in-situ organic modification were much better than those of unmodified nanocomposite and similar to those of exfoliated EPDM/OMMT nanocomposite；and Na-MMT existed in EPDM matrix in 3 micromorphologies，i.e.totally exfoliated，intercalated and unintercalated micromorphologies，and the presence of unintercalated Na-MMT had little effect on the reinforcement of totally exfoliated Na-MMT to EPDM. |
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