Interfacial strength of joints between fibers and dispersedly filled epoxy matrices |
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| Authors: | Yu A Gorbatkina V G Ivanova-Mumjieva A S Putyatina T M Ul’yanova |
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| Institution: | (1) Semenov Institute of Chemical Physics, Russian Academy of Sciences, Moscow, Russia;(2) Institute of General and Inorganic Chemistry, Belarus National Academy of Sciences, Minsk, Belarus |
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| Abstract: | The concentration dependences of adhesive strength are investigated for fiber/dispersedly filled epoxy matrix systems. The
measurements were carried out using an improved model of adhesiometer under normal conditions at a constant rate of loading.
It is shown that the adhesive strength as a function of filler concentration has a maximum, which is more or less pronounced.
The location of the maximum depends on the nature of filler and particle geometry. The increase in the adhesive strength at
the maximum reaches 20–30% in comparison with that for the unfilled epoxy matrix. Since the interfacial strength between steel
wire and all the mineral powders investigated is zero, the growth in the adhesive strength upon introduction of a finely divided
filler in polymer binders is rather un expected. The possible reasons for the phenomenon observed are discussed.
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Translated from Mekhanika Kompozitnykh Materialov, Vol. 43, No. 1, pp. 3–14, January–February, 2007. |
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| Keywords: | disperse fillers epoxy matrix adhesive strength pull-out method |
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