"2011-12-31+01:00"^^ . "2"^^ . . "3182"^^ . . . "13"^^ . "Kompozit, matrice, pyrol\u00FDza, mechanick\u00E9 vlastnosti"@en . . . "13"^^ . . "0"^^ . . . . "New polymer precursors for ceramic fibre composites with pyrolysed matrix will be developed. As precursors, resins based on siloxane with varying content of carbon per silicon will be studied. Also oxygen-free carbosilanes, silazanes, boron containing siloxanes and their copolymers will be investigated in order to design an optimal precursor with good technological parameters in the polymer state and also with thermally stable amorphous structure and oxidation stability in the pyrolysed state. Composite materials consisting of such precursors and ceramic fibres Nextel 720 will be made by pyrolysis up to 1000\u00B0C. Their properties relevant to the intended high temperature applications (thermal stability of microstructure, oxidation resistance, mechanical properties up to 1400\u00B0C, fracture toughness) will be investigated. Also fractographic analysis will help to optimize the processing parameters of the composite manufacture."@en . "3195"^^ . "1) synt\u00E9za nov\u00FDch polymer\u016F, vhodn\u00FDch jako prekurzor matrice kompozit\u016F s keramick\u00FDmi vl\u00E1kny, 2) vypracov\u00E1n\u00ED technologie p\u0159\u00EDpravy kompozit\u016F s matric\u00ED odvozenou z vybran\u00FDch polymer\u016F, 3) charakterizace vlastnost\u00ED a chov\u00E1n\u00ED t\u011Bchto kompozit\u016F za zv\u00FD\u0161en\u00FDch teplot, 4) pr\u016Fzkum mo\u017Enost\u00ED aplikac\u00ED."@cs . "V\u00FDvoj nov\u00FDch typ\u016F matric odvozen\u00FDch z pyrolyzovan\u00FDch prysky\u0159ic pro kompozity vyztu\u017Een\u00E9 keramick\u00FDmi vl\u00E1kny"@cs . . "1"^^ . "Development of new matrix types based on pyrolysed resins for composites reinforced with ceramic fibres"@en . . "2009-01-01+01:00"^^ . .