Elastomers and Composites

  • 제56권4호
  • /
  • Pages.209-216
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  • 2021
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  • 2092-9676(pISSN)
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  • 2288-7725(eISSN)
한국고무학회 (The Rubber Society of Korea)
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Effect of Phenyl Vinyl Methyl Silicone (PVMQ) on Low Temperature Sealing Performance of Fluorosilicone Composites

  • Lee, Jin Hyok (Department of Polymer Engineering, Pusan National University) ;
  • Bae, Jong Woo (Rubber Research Division, Korea Institute of Footwear & Leather Technology) ;
  • Choi, Myoung Chan (Rubber Research Division, Korea Institute of Footwear & Leather Technology) ;
  • Yun, Yu-Mi (Rubber Research Division, Korea Institute of Footwear & Leather Technology) ;
  • Jo, Nam-Ju (Department of Polymer Engineering, Pusan National University)
  • 투고 : 2021.10.19
  • 심사 : 2021.11.22
  • 발행 : 2021.12.31
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초록

In this study, we observed the mechanical properties, thermal stability, and low temperature sealing performance of fluorosilicone elastic composites. When the blend ratio of Phenyl vinyl methyl silicone (PVMQ) was increased, the tensile strength, modulus at 100%, and compression set were decreased. The thermal stability of fluorosilicone elastic composites showed a similar tendency. These were caused by poorer green strength of PVMQ than Fluorosilicone rubber (FVMQ). The change in the tensile strength and elongation at -40℃ showed a decreasing tendency with increasing PVMQ blend ratio. By increasing the PVMQ blend ratio, low-temperature performance was improved. The Dynamic mechanical analysis (DMA) results showed that Tg was decreased and low-temperature performance was improved with increasing PVMQ blend ratio. However tanδ was decreased becaused of the poor green strength and elasticity of PVMQ. From a hysteresis loss at -40℃, the hysteresis loss value was increased and fluorosilicone elastic composites showed the decreasing tendency of elasticity with increasing PVMQ blend ratio. From the TR test, TR10 was decreased with increasing PVMQ blend ratio. FS-4 (45% PVMQ blended composites) showed a TR10 of -68.0℃ that was 5℃ lower than that of FS-1 (100% FVMQ). The gas leakage temperature was decreased with increasing PVMQ blend ratio. The gas leakage temperature of FS-4 was -69.2℃ that was 5℃ lower than that of FS-1. Caused by the polymer chain started to transfer from a glassy state to a rubbery state and had a mobility of chain under Tg, the gas leakage temperature showed a lower value than Tg. The sealing performance at low temperature was dominated by Tg that directly affected the mobility of the polymer chain.

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과제정보

본 연구는 한국산업기술평가관리원의 지원을 받는 산업기술혁신사업(과제번호 20011150)을 통해 수행된 연구이며, 이에 감사드립니다.

참고문헌

  1. P. Warren, A. Douglas, and P. Embury, "Low temperature sealing capability of O-rings: the relationship between laboratory tests and service performance", Conference on High Performance and Speciality Elastomers (2007).
  2. B. Flitney, "How should we rate the temperature capabilities of elastomers", Sealing Technology, RAPRA (2007).
  3. P. Warren, "Low temperature sealing capability of elastomer O-rings", Head of Materials Engineering (2008).
  4. P. Farrow and F. Merli, "New low temperature perfluoroelastomer for effective sealing within the chemical process industries", 20th International Conference on Fluid Sealing, BHR Group, 189 (2009).
  5. D. R. Bronowski, "Performance testing of elastomeric seal materials under low and high temperature conditions", Sandia National Laboratories (2000).
  6. G. Gee, "The thermodynamic analysis of the effect of pressure on the glass temperature of polystyrene", Polymers, 7, 177 (1966). https://doi.org/10.1016/0032-3861(66)90011-5
  7. E. L. Warrick, O. R. Pierce, K. E. Polmanteer, and J. C. Saam, "Current Perspectives on Silicone Rubber Technology", Rubber Chemistry and Technology, 52, 442 (1979).
  8. K. E. Polmanteer, "Current Perspectives on Silicone Rubber Technology", Rubber Chemistry and Technology, 54, 1051 (1981). https://doi.org/10.5254/1.3535846
  9. M. Cellina, K. T. Gillen, and R. A. Assink, "Accelerated aging and lifetime prediction: Review of non-Arrhenius behavior due to two competing processes", Polymer Degradation and Stability, 90, 3, 395 (2005). https://doi.org/10.1016/j.polymdegradstab.2005.05.004
  10. K. T. Gillen, J. Wise, and R. L. Clough, "General solution for the basic autoxidation scheme", Polymer Degradation and Stability, 47, 1, 149 (1995). https://doi.org/10.1016/0141-3910(94)00105-H
  11. K. T. Gillen and R. L. Clough, "Oxygen diffusion effects in thermally aged elastomers", Polymer Degradation and Stability, 38, 47 (1992). https://doi.org/10.1016/0141-3910(92)90022-W