Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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A study on the Measurement of the Coefficient of Thermal Expansion of Polymer materials Exposed to Different Thermal Environments

서로 다른 열환경에 노출된 고분자 소재의 열팽창계수 측정에 관한 연구

  • Kim, Dong-Ju (Dept. of Mechanical System & Automotive Engineering Graduate School of Chosun University) ;
  • Park, Seul-Hyun (Department of Mechanical Engineering, Chosun University)
  • 김동주 (조선대학교 기계시스템.미래자동차공학과) ;
  • 박설현 (조선대학교 기계공학과)
  • Received : 2020.11.04
  • Accepted : 2021.01.07
  • Published : 2021.04.30
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Abstract

Plastics are widely used in mechanical and other fields due to their light weight, design flexibility, and molding processability. In processing plastics, defective products are mixed and reprocessed to improve production efficiency and reduce costs. In this study, an experiment was conducted to confirm the coefficient of thermal expansion of HDPE during this reprocessing. The coefficient of thermal expansion was measured at different measurement directions and heating rates. As a result, we observed that the coefficient of thermal expansion in the direction perpendicular to the injection direction is greater than that in the horizontal direction.

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References

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