Role of pyrolysis conditions on fracture behaviour of fibre reinforced Composites

0355781 - ÚFM 2011 RIV CH eng J - Článek v odborném periodiku
Chlup, Zdeněk - Černý, Martin - Strachota, Adam - Dlouhý, Ivo
Role of pyrolysis conditions on fracture behaviour of fibre reinforced Composites.
Key Engineering Materials. Roč. 465, - (2011), s. 455-458. ISSN 1013-9826
Grant CEP: GA ČR GA106/09/1101
Výzkumný záměr: CEZ:AV0Z20410507; CEZ:AV0Z40500505; CEZ:AV0Z30460519
Klíčová slova: CMCs * fracture toughness * heat treatment
Kód oboru RIV: JH - Keramika, žáruvzdorné materiály a skla

Fracture response of matrix prepared by pyrolysis of polysiloxane resin used for composite reinforced by long fibres was the main goal of this contribution. A set of composites with matrix prepared by partial pyrolysis of polysiloxane resin was studied. An effect of pyrolysis temperature on the composite behaviour and fracture resistance was monitored. An optimal procedure of pyrolysis was established. Heat treatment at 1550°C in air atmosphere was conducted on fully pyrolysed matrix to explore its high temperature potential. Determination of reliable parameters characterising microstructural changes in the matrix by instrumented indentation technique was used. Both optical and scanning electron microscopy was employed in microstructural observations and fracture mechanism qualification. Observation of indents and associated cracking caused by microstructural changes as well as 3D surface reconstruction using confocal microscopy was employed.
Trvalý link: http://hdl.handle.net/11104/0194467