| 硅橡胶/有机改性蒙脱土纳米复合材料的性能研究 |
| Influence of Montmorillonite Types and Contents on Properties of Silicone Rubber |
| 投稿时间：2017-07-30 修订日期：2017-07-30 |
| DOI： |
| 中文关键词: 硅橡胶 有机蒙脱土 力学性能 热稳定性能 |
| 英文关键词: methyl vinyl silicone rubber, organic montmorillonites, mechanical properties, heat resistance |
| 基金项目: |
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| 中文摘要: |
| 通过熔体插层法制备甲基乙烯基硅橡胶/有机蒙脱土(MVQ/OMMT)纳米复合材料,研究了具有不同亲水性质的三种有机改性蒙脱土对复合材料的力学性能和热稳定性能的影响,并通过XRD和SEM对其微观结构进行了表征。XRD和SEM结果显示添加三种有机蒙脱土均制备出插层型微观结构的纳米复合材料,但亲水性差的有机粘土(I.44P和I.30P)的分散性优于Bengel434,Bengel434粘土在橡胶基体中发生团聚。有机蒙脱土与硅橡胶的相容性、分散性、力学性能和热稳定性能,从I.44P、I.30P到Bengel434依次降低。其中,当I.44P有机蒙脱土填充量为40phr时,复合材料拉伸强度和撕裂强度分别比纯胶提高了270%和980%。 |
| 英文摘要: |
| Methyl vinyl silicone rubber / organic montmorillonite (MVQ / OMMT) nanocomposites were prepared by melt blending method. The effects of three kinds of organic modified montmorillonites with different hydrophilic properties on the mechanical properties and thermal stability of the composites were investigated. XRD and SEM results showed intercalated microstructure for nanocomposites, but dispersion of less hydrophilic organic montmorillonite, I.44P,is better than that for Bengel434 and I.30P in which agglomeration of OMMT occurs in the rubber matrix. The compatibility, dispersion, Mechanical properties and thermal stability of organic montmorillonite in silicone rubber going from I.44P to I.30P and Bengel434, respectively. When the content of OMMT reached 40 phr, the tensile strength and tear strength of the composites were increased by 270% and 980% respectively compared with pure rubber. |
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