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Improvement of Cryogenic Fracture Toughness of Epoxy by Hybridization

Published online by Cambridge University Press:  10 February 2011

S. Nishijima ,
M. Hussain ,
A. Nakahira ,
T. Okada  and
K. Niihara
S. Nishijima
Affiliation:
ISIR Osaka Univ., 8-1, Mihogaoka, lbaraki, Osaka, 567, Japan
M. Hussain
Affiliation:
Bangladesh Insulator and Sanitaryware Fact.Ltd, Bux Nagar, Mirpur,Dhaka- 1216, Bangladesh
A. Nakahira
Affiliation:
Dept. Inorganic Mater., Kyoto Institute of Tech., Matsugasaki, Sakyo-ku, Kyoto 606, Japan
T. Okada
Affiliation:
ISIR Osaka Univ., 8-1, Mihogaoka, lbaraki, Osaka, 567, Japan
K. Niihara
Affiliation:
ISIR Osaka Univ., 8-1, Mihogaoka, lbaraki, Osaka, 567, Japan
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Abstract

Improvement of the fracture toughness of epoxy at cryogenic temperatures has been carried out aiming at cryogenic application. The macroscopic molecular state of hybrid material was studied and the possible mechanism to improve the fracture toughness even at cryogenic temperature was discussed.

Based on the mechanism the hybrid materials were prepared by dispersion of silica through hydrolysis of alkoxide. To connect the silica to epoxy molecule a coupling agent was used. The connection was successfully performed and was confirmed by positron annihilation method. The fracture toughness of the developed hybrid material was found to be approximately 2.6 times higher than that of epoxy itself at liquid helium temperature.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 435: Symposium V – Better Ceramics Through Chemistry VII , 1996 , 243
Copyright
Copyright © Materials Research Society 1996

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