Experiment Research on the Mechanical Property of Micron Particles Filled Silicone Rubber Material

ABSTRACT

Six kinds of different content of micron solid particles of silicone rubber materials were prepared by mixing micron Al₂O₃, SiO₂, cross-linking agent, and catalyst, etc. into the matrix material of micron-sized hydroxyl-terminated polydimethylsiloxane. The effect of micron solid particles on the mechanical property of silicone rubber was examined by the uniaxial tensile tests. Non-contact strain test system was adopted to measure the strain response of the samples in the experiments. The results show that, the mechanical property of silicone rubber material is rate-dependent, presenting a hyper-elastic property, which is similar to rubber-like material. The strength of the granular filled material increased with the content of the solid particles, moreover, the enhancement effect caused by SiO₂ was stronger than that caused by Al₂O₃.`

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