Polymer systems for liquid silicon infiltrated ceramic matrix composites

Title data

Wich, Felix ; Demleitner, Martin ; Ebrahimi, Farnaz ; Langhof, Nico ; La Delfa, Gaetano ; Ellinger, Stefan ; Ruckdäschel, Holger ; Schafföner, Stefan:
Polymer systems for liquid silicon infiltrated ceramic matrix composites.
In: Composites Part A: Applied Science and Manufacturing. Vol. 208 (2026) . - 109867.
ISSN 1878-5840
DOI: https://doi.org/10.1016/j.compositesa.2026.109867

Official URL:

Abstract in another language

This work investigated the suitability of different commercially available polymers for manufacturing ceramic matrix composites (CMC) based on the liquid silicon infiltration (LSI) process. Carbon fiber reinforced composites based on thermoplastic PEEK, phenolic novolak resin and three polyaddition curing cyanate ester resins were produced and characterized using DMA, TGA and dilatometry. The composite samples were pyrolyzed and infiltrated using liquid silicon to obtain the desired CMC. The manufactured CMC were characterized through light-microscopy, three-point bending tests, SEM analysis and X-ray diffraction with phase composition analysis. Interactions between the properties in the polymer and ceramic state were revealed. The pyrolysis mechanism and char yield clearly determine the microstructure, the delamination tendency during pyrolysis and the phase composition in the ceramic state and ultimately define the mechanical properties of the CMC. It was shown that high char yield cyanate ester resins are well suited for the LSI process. Damage-tolerant C/C-SiC ceramics with a bending strength of more than 130MPa were obtained for all resin systems. Overall, cyanate ester resin based CMC displayed a unique combination of favorable processing properties such as low-viscosity, polyaddition cure, high char yield and exceptional fiber-protection qualities and present a promising resin system for future CMC development.

Further data

Item Type:	Article in a journal
Refereed:	Yes
Keywords:	CMC; RESINS; Cyanate ester; Ceramic matrix composite
Institutions of the University:	Faculties > Faculty of Engineering Science > Chair Ceramic Materials > Chair Ceramic Materials - Univ.-Prof. Dr.-Ing. Stefan Schafföner Faculties > Faculty of Engineering Science > Chair Polymer Materials > Chair Polymer Materials - Univ.-Prof. Dr.-Ing. Holger Ruckdäschel Research Institutions > Central research institutes > Bayreuth Center for Material Science and Engineering - BayMAT Research Institutions > Affiliated Institutes > Bavarian Polymer Institute (BPI)
Result of work at the UBT:	Yes
DDC Subjects:	600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited:	24 Jun 2026 05:55
Last Modified:	24 Jun 2026 07:48
URI:	https://eref.uni-bayreuth.de/id/eprint/98879