Reactive compatibilization of epoxy/polyorganosiloxane blends |
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Authors: | SG Prolongo JC Cabanelas J Baselga |
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Institution: | Instituto Tecnológico de Química y Materiales Álvaro Alonso Barba. Universidad Carlos III de Madrid. Avda. Universidad, 30, 28911 Leganés, Madrid, Spain |
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Abstract: | A new thermoset material based on DGEBA with polyaminosiloxane curing agents is presented. The system shows reaction-induced compatibilization which prevents coalescence of polysiloxane and DGEBA rich domains, leading to gradient structured morphologies. The influence of curing temperature and/or chemical nature of the siloxane on the morphology and surface microhardness were examined. When siloxane is pre-reacted with epoxypropylphenylether (EPPE), a more homogeneous material is obtained. Microhardness profiles on the material are strongly influenced by the extension of the compositional gradients. |
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Keywords: | blends epoxy resin poly(3-aminopropylmethylsiloxane) reactive compatibilization thermosets |
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