Adhesive ability of a heat-resistant double-chain polymer and the strength of CFRP based on it |
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Authors: | Yu. A. Gorbatkina V. G. Ivanova-Mumjieva A. M. Kuperman I. I. Ponomarev V. I. Sidorenko |
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Affiliation: | (1) Semenov Institute of Chemical Physics, Russian Academy of Sciences, Moscow, Russia;(2) Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russia |
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Abstract: | The adhesive ability of a heat-resistant polyiminoquinazolindione (PIQD) binder, based on a double-chain polymer, and the physicomechanical characteristics of unidirectional CFRPs made with it are investigated. It is shown that, at room temperature, the strength of model adhesive joints (PIQD-steel wire) and of the CFRPs in shear and bending is rather low — about half of that of similar specimens based on an epoxy binder. At the same time, all their mechanical characteristics, to a large measure (50%), are retained at temperatures up to 450°C, which considerably exceeds the heat resistance of all polymer matrices used at the present time. The elastic modulus of the CFRPs in bending practically remains the same up to 450°C. __________ Translated from Mekhanika Kompozitnykh Materialov, Vol. 44, No. 4, pp. 535–546, July–August, 2008. |
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Keywords: | heat-resistant binder double-chain polymer adhesion composite material physicomechanical properties |
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