Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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A Fundamental Study on UV Laser Micro Machining of Micro Porous Polymeric Foams

마이크로 다공질 폴리머 폼의 UV 레이저 미세가공에 관한 기초 연구

  • Oh, Jae-Yong (ERC/NSDM, Department of Mechanical Engineering, Pusan Natl. Univ.) ;
  • Shin, Bo-Sung (ERC/NSDM, Department of Mechanical Engineering, Pusan Natl. Univ.) ;
  • Lee, Jung-Han (Department of Mechanical Engineering, Pusan Natl. Univ.) ;
  • Park, Sang-Hu (Department of Mechanical Engineering, Pusan Natl. Univ.) ;
  • Park, Chul-Beom (Department of Mechanical and Industrial Engineering, Univ. of Toronto)
  • 오재용 (부산대학교 정밀정형 및 금형가공 연구소) ;
  • 신보성 (부산대학교 정밀정형 및 금형가공 연구소) ;
  • 이정한 (부산대학교 기계공학부) ;
  • 박상후 (부산대학교 기계공학부) ;
  • 박철범 (토론토 대학교 기계공학과)
  • Received : 2011.11.09
  • Accepted : 2012.01.31
  • Published : 2012.05.01
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Abstract

Recently porous polymer has widely been applied to packaging, heat isolation, and sound absorption in various fields from the electrics to the automobiles industry. A lot of micro porosities inside foamed polymer provide lower heat conduction and lighter weight than non-porous polymer, because they involve gas or air during foaming process. In this paper experimental approaches of the UV laser micro machining behavior for Expanded Polypropylene (EPP) foamed polymer materials, which have different expansion rates, were investigated. From these results, the ablation phenomena were finally observed that the ablation is depended upon stronger photo-chemical than photo-thermal effect. This study will also help us to understand interaction between UV laser beam and porous polymer.

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References

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