Browse Publications Technical Papers 2003-01-0482
2003-03-03

Evaluation on Properties of Perfluoro Rubber at High Temperature 2003-01-0482

In this study, we studied the phenomenon of compression cracks generated in the use of perfluoro rubber (FFKM) O-rings at high compression ratios and high temperatures, and clarified the correlation between elongation at break, thermal expansion coefficient, and internal strains and cracks obtained using FEM analysis. The results showed that the smaller the thermal expansion coefficient and larger the elongation after fracture in the material, the smaller will be the internal strain, and less easily will cracks occur. In order to prevent compression cracks under high temperatures, there is a need to design materials with small thermal expansion coefficient and large elongation at break.

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