세미나 및 이벤트
Barrier Characteristics, Mechanical/Fracture Properties and Applications of Clay Nanocomposites..
세미나 날짜
2006-06-20
작성자
박성훈
작성일
2006-06-14
조회
1630
1. 제 목 : Barrier Characteristics, Mechanical/Fracture Properties and Applications
of Clay Nanocomposites and Their CFRP Hybrid Composites
2. 연 사 : Prof. Jang-Kyo Kim
(Mechanical Engineering Dep., Hong Kong Uni. of Science & Technology)
3. 일 시 : 2006년 6월 20일 (화) 오후 5시 ~ 6시
4. 장 소 : 301동 117호 세미나실
5. 내 용 : The morphology, thermo-mechanical properties and moisture/gas barrier characteristics are studied of epoxy and PET-based polymer nanocomposites containing three different layered silicates. The epoxy-based systems were fabricated using the solvent method, whereas the PET-based nanocomposites were prepared by melt intercalation. The organoclay was treated with epoxy monomer to further improve the interactions with PET matrix. Proper clay types and optimized processing conditions were identified to give rise to enhanced barrier properties while maintaining balanced mechanical/fracture properties.
The degradation behavior and residual properties of epoxy/organoclay nanocomposites were studied after accelerated UV and moisture exposure. The changes in chemical element, topography and transparency of both the neat epoxy and nanocomposites due to UV exposure were characterized. The residual mechanical and fracture properties were measured and compared between the nanocomposites with different clay contents. Continued study was made of carbon fiber nanocomposites (CFRPs) made from organoclay-epoxy matrix. The organoclay brought about a significant improvement in flexural modulus, quasi-static fracture toughness and interlaminar fracture toughness of the hybrid CFRP-clay composites. The implications of these finding and practical applications of different nanocomposites are discussed.
6. 연사약력 :
Prof. Kim graduated from Department of Aeronautical Engineering, Seoul National University, with a B.Eng. degree in 1977; MSc degree in Materials Engineering from Monash University, Melbourne; and a PhD degree in Mechanical Engineering, University of Sydney, Australia. Prof. Kim has been teaching at Australian National University in Canberra, University of New South Wales in Sydney and is currently a Professor at Hong Kong University of Science & Technology (HKUST).
7. 문 의 : 기계항공공학부 김 승 조 교수 (☏ 880-7388)
of Clay Nanocomposites and Their CFRP Hybrid Composites
2. 연 사 : Prof. Jang-Kyo Kim
(Mechanical Engineering Dep., Hong Kong Uni. of Science & Technology)
3. 일 시 : 2006년 6월 20일 (화) 오후 5시 ~ 6시
4. 장 소 : 301동 117호 세미나실
5. 내 용 : The morphology, thermo-mechanical properties and moisture/gas barrier characteristics are studied of epoxy and PET-based polymer nanocomposites containing three different layered silicates. The epoxy-based systems were fabricated using the solvent method, whereas the PET-based nanocomposites were prepared by melt intercalation. The organoclay was treated with epoxy monomer to further improve the interactions with PET matrix. Proper clay types and optimized processing conditions were identified to give rise to enhanced barrier properties while maintaining balanced mechanical/fracture properties.
The degradation behavior and residual properties of epoxy/organoclay nanocomposites were studied after accelerated UV and moisture exposure. The changes in chemical element, topography and transparency of both the neat epoxy and nanocomposites due to UV exposure were characterized. The residual mechanical and fracture properties were measured and compared between the nanocomposites with different clay contents. Continued study was made of carbon fiber nanocomposites (CFRPs) made from organoclay-epoxy matrix. The organoclay brought about a significant improvement in flexural modulus, quasi-static fracture toughness and interlaminar fracture toughness of the hybrid CFRP-clay composites. The implications of these finding and practical applications of different nanocomposites are discussed.
6. 연사약력 :
Prof. Kim graduated from Department of Aeronautical Engineering, Seoul National University, with a B.Eng. degree in 1977; MSc degree in Materials Engineering from Monash University, Melbourne; and a PhD degree in Mechanical Engineering, University of Sydney, Australia. Prof. Kim has been teaching at Australian National University in Canberra, University of New South Wales in Sydney and is currently a Professor at Hong Kong University of Science & Technology (HKUST).
7. 문 의 : 기계항공공학부 김 승 조 교수 (☏ 880-7388)
