Effects of solvent and temperature on the coupling agent/epoxy resin interface |
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Authors: | M.E. Enyiegbulam |
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Affiliation: | The author is with the Polymer and Fibre Science and Technology Programme, Federal University of Technology, P.M.B. 1526, Owerri, Imo State, Nigeria |
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Abstract: | Increased wetting of the coupling agent/epoxy resin interface was observed when γ-glycidoxypropyltrimethoxysilane, polyfunctional aminosilane and γ-aminopropyltriethoxysilane were applied respectively from methyllethylketone, dimethylformamide and water on woven glass cloths which had been cleaned at 300°C. However, when factory-applied coupling agents were burnt off the woven cloths and fresh coupling agents re-applied, it was found that the nature of the factory-applied coupling agent influenced subsequent wetting. Thinner glass fibres showed a greater improvement in wetting rate than thicker fibres in those solvents identified to be good for improved wettability, irrespective of the heat-cleaning temperature. |
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Keywords: | adhesion wettability glass fibres epoxy resins coupling agents |
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