Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Creep Characteristic of the Polycarbonate(PC) at Various Stresses and Temperatures

응력과 온도에 따른 폴리카보네이트(PC)의 크리프특성

  • 강석춘 (수원대학교 기계공학과) ;
  • 이용원 (수원대학교 기계공학과 대학원)
  • Received : 2010.03.17
  • Accepted : 2010.06.15
  • Published : 2010.09.01
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Abstract

Creep characteristic is an important failure mechanism when evaluating engineering materials that are soft material as polymers or used as mechanical elements at high temperatures. One of the popular thermo-elastic polymers, Polycarbonate(PC) which is used broadly for engineering polymer, as it has excellent mechanical and thermal properties compared to other polymers, was studied for creep characteristic at various level of stresses and temperatures. From the experimental results, the creep limit of PC at room temperature is 85 % of tensile strength. which is higher than PE (75%)at room temperature. Also the creep limits decreased exponentially as the temperatures increased, up to 50 % of the melting point($267^{\circ}C$). Also the first and third stage among the three creep stages was non-existent nor was there any rupture failure which occurred for many metals.

Keywords

References

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