Paper number 425


Tohru Morii1, Jan Ivens2, and Ignaas Verpoest2

1Department of Materials Science and Ceramic Technology, Shonan Institute of Technology
1-1-25 Tsujido-Nishikaigan, Fujisawa, Kanagawa 251-8511, Japan
2Department of Metallurgy and Materials Engineering, Katholieke Universiteit Leuven
De Croylaan 2, B-3001 Leuven, Belgium

Summary Interfacial effect on the mechanical properties of glass fiber/phenolic composites was discussed in this paper. Standard and silane modified resins were used as matrix, and a yarn and two kinds of rovings with different sizing were used as reinforcement. Effect of fiber on wetting were evaluated by Wilhelmy type dynamic wetting instrument, and it was clarified that sizing specially developed for phenolic resin was quite effective to improve resin impregnation into the fiber bundle. The mechanical properties were evaluated by using the resin impregnated unidirectional fiber bundle composite specimens. The effects of resin and fiber on strength and crack propagation were evaluated by the lateral compression test. Type of the fiber affected the dispersion of fibers in the matrix resin, and the roving developed for phenolic resin gave the well dispersion of the fiber. This led the high mechanical properties and high resistance to the crack initiation.
Keywords interface, phenolic resin, sizing, yarn, roving, fracture, silane modification, compression strength.

Theme : Interface and Interphase ; Mechanical Properties

[ HOME ]  [ BACK ]