摘要
用熔体插层法制备甲基乙烯基硅橡胶(MVQ)/有机改性蒙脱土(OMMT)纳米复合材料并研究其微观结构和性能。结果表明:OMMT改性剂疏水性从优到劣的顺序为I.44P,I.30P,Bengel434,I.44P和I.30P在MVQ中的分散性优于Bengel434;MVQ/OMMT纳米复合材料的物理性能和热稳定性从优到劣的顺序为MVQ/I.44P,MVQ/I.30P,MVQ/Bengel434纳米复合材料;添加40份I.44P的MVQ/I.44P纳米复合材料的100%定伸应力、拉伸强度和撕裂强度比纯胶有较大提高。
Methyl vinyl silicone rubber(MVQ)/organically modified montmorillonite(OMMT)nanocomposites were prepared by melt blending method and their microstructure and properties were studied. The hydrophobicity of OMMT decreased in the order of I. 44 P,I. 30 P,Bengel434. It was found that I. 44 P and I. 30 P had better dispersion than Bengel434 in MVQ. The physical properties and thermal stability of MVQ/I. 44 P nanocomposites were the best, while those of MVQ/Bengel434 nanocomposites were the lowest. When 40 phr OMMT was added,the modulus at 100% elongation,tensile strength and tear strength of MVQ/I. 44 P nanocomposites were significantly increased compared with the pure rubber.
引文
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