한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)

  • 제24권12호
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  • Pages.119-127
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  • 2007
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  • 1225-9071(pISSN)
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  • 2287-8769(eISSN)
한국정밀공학회 (Korean Society for Precision Engineering)
권호 표지

마이크로광조형에서 고 세장비 구조물 집적화 가공을 위한 UV 경화성 수지의 물성 개선

Improvement of Mechanical Properties of UV-curable Resin for High-aspect Ratio Microstructures Fabricated in Microstereolithography

  • 이수도 (부산대학교 대학원 지능기계공학부) ;
  • 최재원 (부산대학교 기계기술연구소) ;
  • 박인백 (부산대학교 대학원 지능기계공학부) ;
  • 하창식 (부산대학교 고분자공학과) ;
  • 이석희 (부산대학교 기계공학부)
  • 발행 : 2007.12.01
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초록

Recently, microstructures fabricated using microstereolithography technology have been used in the biological, medical and mechanical fields. Microstereolithography can fabricate real 3D microstructures with fine features, although there is presently a limited number of materials available for use in the process. Deformation of the fine features on a fabricated microstructure remains a critical issue for successful part fabrication, and part deformation can occur during rinsing or during fabrication as a result of fluid flow forces that occur during movement of mechanical parts of the system. Deformation can result in failure to fabricate a particular feature by breaking the feature completely, spatial deflection of the feature, or attaching the feature to neighboring microstructures. To improve mechanical strength of fabricated microstructures, a clay nanocomposite can be used. In particular, a high-aspect ratio microstructure can be fabricated without distortion using photocurable liquid resin containing a clay nanocomposite. In this paper, a clay nanocomposite was blended with a photocurable liquid resin to solve the deformation problem that occurs during fabrication and rinsing. An optimal mixture ratio of a clay nanocomposite was found through tensile testing and the minimal allowable distance between microstructures was found through fabrication experimentation. Finally, using these results, high-aspect ratio microstructures were fabricated using a clay nanocomposite resin without distortion.

키워드

참고문헌

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