基于聚硅氧烷的SiC(O)纤维的制备与表征

doi:10.19976/j.cnki.43-1448/TF.2025012

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Abstract Polycarbosilane commonly used precursor for SiC fibers is prohibitively expensive. To mitigate production expenses, this study employs polysiloxane as the silicon source and polyacrylonitrile as the carbon source to prepare a modified precursor. Polymer precursor fibers were fabricated via precursor-derived ceramic technology combined with electrostatic spining. The fibers underwent stabilization through ultraviolet irradiation and air-stabilization followed by pyrolysis in a N₂ atmosphere to produce SiC(O) fibers, then the microstructures and oxidation resistance of the SiC(O) fibers were investigated. The results show that the SiC(O) fibers exhibit a diameter of 200-300 nm, excellent uniformity, and pore-free surface. Moreover, their oxidation resistance at 600 ℃ surpasses that of carbon fibers.

Key words： SiC(O) fiber precursor-derived electrostatic spining polysiloxane oxidation resistance

Received: 13 February 2025 Published: 15 April 2025

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	SHEN Yan
	ZHAO Zhongqian
	YANG Tianyue
	GOU Yanzi

Cite this article:

SHEN Yan,ZHAO Zhongqian,YANG Tianyue, et al. Preparation and characterization of polysiloxane-based SiC(O) fibers[J]. Materials Science and Engineering of Powder Metallurgy, 2025, 30(2): 139-147.

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http://pmbjb.csu.edu.cn/EN/10.19976/j.cnki.43-1448/TF.2025012 OR http://pmbjb.csu.edu.cn/EN/Y2025/V30/I2/139

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