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자외선 경화가능한 나노복합소재의 중합두께 예측모델 개발
임현철(Hyeoncheol Lim),최영(Young Choi),박상헌(Sangheon Park),황반토(Hoang Van Tho),윤상희(Sang-Hee Yoon) 대한기계학회 2018 대한기계학회 춘추학술대회 Vol.2018 No.12
Ultraviolet (UV) curable nanocomposites (NCs) are emerging as viable alternatives to thermal curable NCs in a variety of advanced engineering applications due to their fast polymerization. Despite extensive efforts, little is known about how to model the polymerized thickness of UV curable NCs especially when non-spherical nanofillers are embedded therein. Here, we develop a theoretical model for predicting the polymerized thickness of UV curable NCs by modifying the Beer-Lambert law to reflect both inter-nanofiller distance and nanofiller UV screening. The accuracy of the model is accessed by comparing its prediction with experimental data for graphite nanoflake (GnF)-embedded SU-8 composites having different GnF concentrations of 1 to 25 wt%. The findings of this study will lead to successful and growing development of UV curable NCs.