화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of the Korean Industrial and Engineering Chemistry, Vol.11, No.3, 285-289, May, 2000
Export Citation
실란처리가 유리섬유강화 복합재료의 계면특성에 미치는 영향
Effect of Silane Coupling Agent Treatment on Interfacial Adhesion of Glass Fiber-reinforced Composites
박수진†, 진중성, 이재락, 김영근1
  • 한국화학연구소 화학소재연구부, 대전 305-600
  • 1강남정공(주), 안산 425-110
Soo Jin Park†, Joong Seong Jin, Jae Rock Lee, and Yeung Keun Kim1
  • Advanced Material Division, Korea Research Institute of Chemical Technolgy, Taejon 305-600, Korea
  • 1Kangnam Industrial Co. Ltd., Ansan 425-110, Korea
E-mail:
초록
본 연구에서는 유리섬유의 표면 처리를 위해 실란 커플링제, γ-glycidoxy propyl trimethoxy silane (403), γ-methacryloxy propyl trimethoxy silane(503), 그리고 γ-amino propyl triethoxy silane (903)이 사용되었다. 유리섬유 강화 복합재료의 계면 결합력을 알아보기 위해, 실란 처리된 유리섬유의 접촉각은 Washbum 식에 기초한 wicking method를 사용하였고, 젖음액으로는 증류수와 diiodomethane이 사용되었다. 접촉각 측정 결과, 실란 처리된 유리섬유는 극성 요소에 의한 표면 자유에너지의 증가를 확인할 수 있었다. 유리섬유 복합재료의 기계적 계면 결합력을 알아보기 위해 층간 전단강도(ILSS)와 암계 응력세기 인자(KIC)가 행해졌다. 그 결과로, 기계적 물성은 실란 처리되지 않은 것에 비하여 증가됨을 알 수 있었고, 이는 유리섬유와 실란 커플링제 사이의 수소 결합에 의한 극성 요소가 그들 간의 계면을 증가시키는데 크게 작용하였음을 알 수 있다.
In this work, the silane coupling agents, such as γ-glycidoxy propyl trimethoxy silane (403), γ-methacryloxy propyl trimethoxy silane(503), and γ-amino propyl triethoxy silane (903) were used for the surface treatment of glass fibers. To understand the role of interfacial adhesion of glass fiber/unsaturated polyster composites, contact angles of the silane-treated glass were measured by the wicking method based on Washburn equation using deionized water and diiodomethane as testing liquids. According to the contact angle measurements, the silane-treated glass fibers do lead to an increase in surface free energy, mainly due to the increase of polarity of component. For the mechanical interfacial properties of glass fiber/unsaturated polyester composites, the interlaminar shear strength (ILSS) and the critical stress intensity factor (KIC) were performed. As a result, the mechanical interfacial properties were improved in the case of silane-treated composites compared with untreated one. It reveals that the hydrogen bonding, which is one of the specific component of the surface free energy, between the glass fibers and the coupling agents plays an important role in improving the degree of adhesion in composite system.
Keywords:silane coupling agent;glass fiber;interfacial adhesion;surface free energy;polar component
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