Structure and performance of polymer-derived bulk ceramics determined by method of filler incorporation

2nd International Conference on Competitive Materials and Technological Processes

Konegger, T.^1 ; Schneider, P.^1 ; Bauer, V.^1 ; Amsüss, A.^1 ; Liersch, A.^2

Institute of Chemical Technologies and Analytics, Vienna University of Technology, Vienna 1060, Austria^1

Department Materials Science, Glass and Ceramics, Koblenz University of Applied Sciences, 56203 Höhr-Grenzhausen, Germany^2

关键词: Filler distribution;    Heterogeneous distributions;    Polymer-derived ceramics;    Quantitative evaluation;    Resulting materials;    Solvent free mixing;    Structural and mechanical properties;    Structure and performance;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/47/1/012054/pdf
DOI  :  10.1088/1757-899X/47/1/012054

来源: IOP

【 摘 要 】

The effect of four distinct methods of incorporating fillers into a preceramic polymer matrix was investigated with respect to the structural and mechanical properties of the resulting materials. Investigations were conducted with a polysiloxane/Al2O3/ZrO2model system used as a precursor for mullite/ZrO2composites. A quantitative evaluation of the uniformity of filler distribution was obtained by employing a novel image analysis. While solvent-free mixing led to a heterogeneous distribution of constituents resulting in limited mechanical property values, a strong improvement of material homogeneity and properties was obtained by using solvent-assisted methods. The results demonstrate the importance of the processing route on final characteristics of polymer-derived ceramics.