| Effect of Dispersant and Coupling Agent on Properties of Silica Filled MVQ |
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| DOI： |
| Key Words: zinc soap dispersant；silane coupling agent；silica；MVQ；reinforcement；superposition |
| Author Name | Affiliation | | LI Bin | South China University of Technology | | LIU Shu-mei | South China University of Technology | | YUAN Jun-xuan | South China University of Technology | | CHEN Zhao-hui | South China University of Technology | | ZHAO Jian-qing | South China University of Technology |
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| Abstract: |
| The effect of zinc soap dispersant，coupling agent KH-560 and their blend on the properties of silica filled MVQ was investigated.The results showed that，by adding the dispersant or coupling agent KH-560，the filler network structure was weakened，the dispersion of silica in MVQ compound was improved，the storage modulus of compound at low strain was reduced and a stronger effect was gained in their blend.The increased bound rubber indicated that，the silica-rubber interaction was enhanced by coupling agent KH-560 and zinc soap dispersant blend.The optimum curing time of mixture was obviously reduced by the zinc soap dispersant，and the curing rate was significantly accelerated.The Shore A hardness，modulus at 100% and 300% elongation，and the tensile strength of silica filled MVQ were slightly increased by adding zinc soap dispersant and coupling agent KH-560，and the elongation at break decreased. |
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