Preparation and characterization of organic/inorganic hybrid epoxy networks from reactive inorganic precursors

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F12%3A00376307" target="_blank" >RIV/61389013:_____/12:00376307 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1002/app.36296" target="_blank" >http://dx.doi.org/10.1002/app.36296</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/app.36296" target="_blank" >10.1002/app.36296</a>

Result language
angličtina
Original language name
Preparation and characterization of organic/inorganic hybrid epoxy networks from reactive inorganic precursors
Original language description
Organic/inorganic hybrid networks were prepared by a novel solvent-free two-step synthesis method. In the first step, prehydrolyzed?condensed reactive inorganic precursors (clusters) were prepared by a sol?gel process from monomeric alkoxysilanes with amino and glycido groups. The second step comprised their addition into epoxy resin and amine hardener, followed by the reaction of all components giving the final hybrid crosslinked materials. The morphology of the organic/inorganic hybrid structures formed from glycidoprecursor revealed spherical silica-rich domains forming agglomerates with diameter from 100 to 500 nm. The aminoprecursor led to large highly condensed and branched silicon-rich structures. The hybrid networks showed significantly improved thermomechanical properties and better resistance against thermooxidation when compared with the neat epoxy?amine network. Thin films as well as bulk materials were successfully prepared by this process.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CD - Macromolecular chemistry
OECD FORD branch
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Publication year
2012
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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