Improvement of Mechanical Interfacial Properties of Epoxy/Clay Nanocomposites Using Silane Intercalant

실란유기화제를 이용한 에폭시/클레이 나노복합재료의 기계적 계면 물성 향상

  • Park, Soo-Jin (Advanced Material Division, Korea Research Institute of Chemical Technology) ;
  • Seo, Dong-Il (Advanced Material Division, Korea Research Institute of Chemical Technolog) ;
  • Lee, Jae-Rock (Advanced Material Division, Korea Research Institute of Chemical Technology)
  • Published : 2001.10.01

Abstract

In this wort, the $Na^+-MMT$ has organically modified with silane intercalant to prepare the polymer/clay nanocomposites. The pH. X-ray diffraction (XRD), and contact angles were used to analyze the surface properties of clay and the exfoliation phenomenon of clay interlayer, The mechanical interfacial properties of epoxy/clay nanocomposites were investigated by three-point bending test. From the experimental results. the surface modification made by silane intercalant on clay surface leads to an increase of distance of silicate layers, surface acid value. and electron acceptor parameter of organoclay. The treatments are also necessary and useful for epoxy to intercalate into the interlayer by interacting of electron donor-accepter between basic epoxy and clay surface. The mechanical interfacial properties of the nanocomposites was improved by the presence of dispersed clay nanolayer containing low content of organoclay in comparison with the conventional, which increase the interfacial adhesion between dispersed clay and epoxy resins.