標題: Injection molding of polymer micro- and sub-micron structures with high-aspect ratios
作者: Liou, AC
Chen, RH
機械工程學系
Department of Mechanical Engineering
關鍵字: high-aspect ratio;injection molding;micro-structures;molding characteristics;sub-micron structures
公開日期: 1-May-2006
摘要: This work studies the injection molding characteristics of polymer micro- and sub-micron structures using demonstration mold inserts with micro- and sub-micron channels with high-aspect ratios. The effects of the injection molding parameters on the achievable aspect ratio of the micro- and sub-micron walls were investigated. Additionally, distinctive mold-filling behaviors and resulting defects were observed for various polymers, such as polymethyl methacrylate (PMMA), polypropylene (PP) and high-density polyethylene (HDPE). Experimental results reveal that the mold temperature determines the success of the injection molding of micro- and sub-micron walls. The satisfactory mold temperature for micro-injection molding significantly exceeds that for traditional injection molding. Moreover, the main injection pressure and the main injection time substantially affect the achievable aspect ratio of the micro- and sub-micron walls. Furthermore, unusual flow behaviors occur and poor molding results are obtained when PP and HDPE are used for micro-injection molding.
URI: http://dx.doi.org/10.1007/s00170-004-2455-2
http://hdl.handle.net/11536/12302
ISSN: 0268-3768
DOI: 10.1007/s00170-004-2455-2
期刊: INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
Volume: 28
Issue: 11-12
起始頁: 1097
結束頁: 1103
Appears in Collections:Articles


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