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A Study on Compressive Creep Behavior of ACM Rubber using TMA Thermal Analysis

TMA 열분석을 이용한 ACM 고무의 압축크립거동 연구

  • 안원술 (계명대학교 화학공학과) ;
  • 이형석 (한국씰텍(주) 기술연구소)
  • Received : 2013.03.13
  • Accepted : 2013.04.03
  • Published : 2013.06.30

Abstract

A study on compressive creep behavior of ACM rubber for automotive engine gasket was performed using TMA thermal analysis. From the results of isothermal measurements with constant load of 1 N at several different temperatures of 160, 180, 200, and $220^{\circ}C$, compressive creep data at the given temperatures were obtained, and therefrom, shift factor ($a_T$) and master curve at reference temperature of $160^{\circ}C$ were obtained using time-temperature superposition principle (TTSP). $C_1$ and $C_2$ of WLF (Williams-Landel-Ferry) equation were calculated through the WLF plot as -1.107 and 11.571, respectively. From this, life time of ACM rubber at $120^{\circ}C$ was predicted as about 24,000 hrs.

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