금형 시스템의 살두께에 대한 발포 배율의 변화

A Change of Foaming Magnitude as Thickness of Mold System

  • 황윤동 (연세대학교 대학원 기계공학과) ;
  • 차성운 (연세대학교 기계전자공학부) ;
  • 윤재동 (연세대학교 대학원 기계공학과) ;
  • 김지현 ((주)LG 생산기술원)
  • Hwang, Yun-Dong (Dept.of Mechanical Engineering, Graduate School of Yonsei University) ;
  • Cha, Seong-Un (Dept.of Mechanical Electronics Engineering, Yonsei University) ;
  • Yun, Jae-Dong (Dept.of Mechanical Engineering, Graduate School of Yonsei University) ;
  • Kim, Ji-Hyeon
  • 발행 : 2000.10.01

초록

We use so many plastic products in everyday. Because polymer materials have a lot of merits including low cost and easiness of forming, they are widely using at many manufacturing industries. Microcellular foaming process appeared at MIT in 1980's to save a quantity of material and increase mechanical properties. The information about the thickness of cavity plays an important role in appling microcellular foaming process to the conventional injection molding process. It is essential to make an effective foam. The goal of this research is to measure the relation between the change of cavity's thickness and foaming magnitude made after inserting a gas. R/t is a conception that indicate proportion between radius and thickness of cavity in mold system. By means of SEM observation of side surface of cavity sample, foaming magnitude of cavity is mold system. By means of SEM observation of side surface of cavity sample, foaming magnitude of polymer in microcellular foaming process is decreasing gradually as the value of R/t is increasing. The proposed foaming magnitude changes data of polymer in relation to mold system can be applied in more extensive injection molding process, such as optimum design of mold for microcellular foaming process.

키워드

참고문헌

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