|Interfacial Adhesion of
Composite 1. Effect of Surface Treatment by Silane Coupling Agent
Department of Applied Chemistry, Osaka Institute of Technology Osaka,Japan
Nippon Gomu Kyokaishi,(2003),76(9), 341-346 General Review in Japanese.
A silane-treatment of glass beads as model filler was carried out under some different drying and heating conditions and the characterization of the treated layer was carried out. 3-Aminopropyl methyldiethoxysilane was used as silane, and the amounts of silane treated were varied from 0.5 to 10 times of those required for the monolayer coverage of bead. The silane-treatment of beads was carried out via an aqueous solution. The fixing ratio of silane was estimated by the carbon analysis, and it was found to be affected by the concentration of silane and also the treatment conditions, especially by heating. The post-heating of the treated beads at above 100ßC was useful in order to increase the fixing ratio. The topography of the silane-treated layer was observed using an atomic force microscopy. As a result, the observed surfaces were differed dependent upon the silane concentration, the treatment condition and the methanol washing for removing the unfixed silanes on their surfaces. The yield stress of poly(vinyl chloride) as a typical ductile matrix filled with the treated beads was investigated. The yield stress was improved by the silane-treatment, however, the unfixed silanes on the bead surface depressed the improvement.
Particle-filled composite,Surface treatment,Silane coupling agent,Interface,atomic force Microscopy(AFM)