Development of new matrix types based on pyrolysed resins for composites reinforced with ceramic fibres

 

Grant No.:

106/09/1101

Grant Agency:

Czech Science Foundation (GAČR)

Resolved in:

2009 - 2011

Principal investigator:

Ing. Martin Černý, Ph.D., Department of Composites and Carbon Materials, IRSM AS CR, v.v.i.

Co-investigators:

RNDr. Adam Strachota, PhD., Institute of Macromolecular Chemistry, AS CR, v.v.i., Praha
Ing. Zdeněk Chlup, PhD., Institute of Physics of Materials of the ASCR, v. v. i.

Description:

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 sloxanes 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°C. Their properties relevant to the intended high temperature applications (thermal stability of microstructure, oxidation resistance, mechanical properties up to 1400°C, fracture toughness) will be investigated. Also fractographic analysis will help to optimize the processing parameters of the composite manufacture.

ISVAV: (What is it?)

Project in The Research and Development and Innovation System of the Czech Republic (in Czech only)