| Effect of heating rate on ceramifying properties of silicone rubber-based ceramizable composites |
| Received:October 10, 2016 Revised:October 10, 2016 |
| DOI： |
| Key Words: silicone rubber, ceramic residue, heating rate, flexural strength, impact strength, morphology |
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| Abstract: |
| The effect of the heating rate on the weight loss and linear shrinkage of ceramizable silicone rubber and the effect of heating rate on the three-point flexural strength and impact strength of ceramic residue were investigated. The fracture surface morphology of the ceramic residue was characterized by SEM analysis. It was shown that the mechanical properties of the ceramic residue initially increased then decreased as the heating rate increasing from 5 to 35℃·min-1. The heating rate had a minor effect on the weight loss of the ceramic silicone rubber, while the linear shrinkage increased with the incremental heat rate when the content of the glass frit was 45 phr. When the heating rate was 15℃·min-1, the ceramic residue by incorporation of 45phr glass frit showed the maximum flexural strength and impact strength with the values of 26.4MPa and 7.6 J·m-1. Accordingly, the micro pores were smaller with uniform distribution and more compact structure was formed in the ceramic residue when the heating rate was 15℃·min-1. |
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