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Article

High-Yield Precursor-Derived Si-O Ceramics: Processing and Performance

1
School of Chemistry and Chemical Engineering, Shandong University of Technology, Zibo 255000, China
2
School of Materials Science and Engineering, Shandong University of Technology, Zibo 255000, China
*
Author to whom correspondence should be addressed.
Materials 2025, 18(15), 3666; https://doi.org/10.3390/ma18153666
Submission received: 22 June 2025 / Revised: 30 July 2025 / Accepted: 1 August 2025 / Published: 4 August 2025
(This article belongs to the Special Issue Processing and Microstructure Design of Advanced Ceramics)

Abstract

 The precursor-derived ceramic route is recognized as an advanced and efficient technique for fabricating ceramic matrix composites, particularly suitable for the development and microstructural tailoring of continuous fiber-reinforced ceramic matrix composites. In this work, octamethylcyclotetrasiloxane and tetravinylcyclotetrasiloxane were employed as monomers to synthesize a branched siloxane via ring-opening polymerization. A subsequent hydrosilylation reaction led to the formation of polyvinylsiloxane with a three-dimensional crosslinked structure. The precursor exhibited excellent fluidity, adjustable viscosity, and superior thermosetting characteristics, enabling efficient impregnation and densification of reinforcements through the polymer infiltration and pyrolysis process. Upon pyrolysis, the polyvinylsiloxane gradually converted from an organic polymer to an amorphous inorganic ceramic phase, yielding silicon oxycarbide ceramics with a high ceramic yield of 81.3%. Elemental analysis indicated that the resulting ceramic mainly comprised silicon and oxygen, with a low carbon content. Furthermore, the material demonstrated a stable dielectric constant (~2.5) and low dielectric loss (<0.01), which are beneficial for enhanced thermal stability and dielectric performance. These findings offer a promising precursor system and process reference for the low-cost production of high-performance, multifunctional ceramic matrix composites with strong potential for engineering applications. 
Keywords: pyrolysis; ceramic precursor; anionic ring opening; ceramic yield; wave-transparent pyrolysis; ceramic precursor; anionic ring opening; ceramic yield; wave-transparent

Share and Cite

MDPI and ACS Style

Zhang, X.; Xiao, B.; Hou, Y.; Wen, G. High-Yield Precursor-Derived Si-O Ceramics: Processing and Performance. Materials 2025, 18, 3666. https://doi.org/10.3390/ma18153666

AMA Style

Zhang X, Xiao B, Hou Y, Wen G. High-Yield Precursor-Derived Si-O Ceramics: Processing and Performance. Materials. 2025; 18(15):3666. https://doi.org/10.3390/ma18153666

Chicago/Turabian Style

Zhang, Xia, Bo Xiao, Yongzhao Hou, and Guangwu Wen. 2025. "High-Yield Precursor-Derived Si-O Ceramics: Processing and Performance" Materials 18, no. 15: 3666. https://doi.org/10.3390/ma18153666

APA Style

Zhang, X., Xiao, B., Hou, Y., & Wen, G. (2025). High-Yield Precursor-Derived Si-O Ceramics: Processing and Performance. Materials, 18(15), 3666. https://doi.org/10.3390/ma18153666

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