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.
[1] ZHAO Z Q, LIAO W, CHEN J, et al.Advanced research on the preparation and application of carbide ceramic fibers[J]. Journal of Advanced Ceramics, 2024, 13(9): 1291-1336. [2] WANG P R, LIU F Q, WANG H, et al.A review of third generation SiC fibers and SiCf/SiC composites[J]. Journal of Materials Science & Technology, 2019, 35(12): 2743-2750. [3] 王堋人, 苟燕子, 王浩. 第三代SiC纤维及其在核能领域的应用现状[J]. 无机材料学报, 2020, 35(5): 525-531. WANG Pengren, GOU Yanzi, WANG Hao.Third generation SiC fibers for nuclear applications[J]. Journal of Inorganic Materials, 2020, 35(5): 525-531. [4] COLOMBO P, MERA G, RIEDEL R, et al.Polymer-derived ceramics: 40 years of research and innovation in advanced ceramics[J]. Journal of the American Ceramic Society, 2010, 93(7): 1805-1837. [5] YAJIMA S, HAYASHI J, OMORI M.Continuous silicon carbide fiber of high tensile strength[J]. Chemistry Letters, 1975, 4(9): 931-934. [6] YAJIMA S, HASEGAWA Y, HAYASHI J, et al.Synthesis of continuous silicon carbide fibre with high tensile strength and high Young’s modulus: part 1 synthesis of polycarbosilane as precursor[J]. Journal of Materials Science, 1978, 13: 2569-2576. [7] 王军, 宋永才, 王浩, 等. 先驱体转化法制备碳化硅纤维[M]. 北京: 科学出版社, 2018. WANG Jun, SONG Yongcai, WANG Hao, et al.Polymer Derived Silicon Carbide Fibers[M]. Beijing: Science Press, 2018. [8] HASEGAWA Y, LIMURA M, YAJIMA S.Synthesis of continuous silicon carbide fibre: part 2 conversion of polycarbosilane fibre into silicon carbide fibres[J]. Journal of Materials Science, 1980, 15: 720-728. [9] 李浩. 有机硅树脂转化制备Si-C-O陶瓷纤维基础研究[D]. 长沙: 国防科技大学, 2018. LI Hao.Basic research on the fabrication of Si-C-O ceramic fibers derived from silicon resin[D]. Changsha: National University of Defense Technology, 2018. [10] GUO A R, ROSO M, MODESTI M, et al.Preceramic polymer-derived SiOC fibers by electrospinning[J]. Journal of Applied Polymer Science, 2014, 131(3): 39836. [11] GUO A R, ROSO M, MODESTI M, et al.Characterization of porosity, structure, and mechanical properties of electrospun SiOC fiber mats[J]. Journal of Materials Science, 2015, 50(12): 4221-4231. [12] MUJIB S B, CUCCATO R, MUKHERJEE S, et al.Electrospun SiOC ceramic fiber mats as freestanding electrodes for electrochemical energy storage applications[J]. Ceramics International, 2020, 46(3): 3565-3573. [13] TOLOSA A, WIDMAIER M, KRÜNER B, et al. Continuous silicon oxycarbide fiber mats with tin nanoparticles as a high capacity anode for lithium-ion batteries[J]. Sustainable Energy & Fuels, 2018, 2(1): 215-228. [14] BRUNNER A R, BUJALSKI D R, MOYER E S, et al.Synthesis and ceramic conversion reactions of pinacolborane- and diethylborazine-modified poly(vinylsiloxane)s. the development of a processable single-source polymeric precursor to boron-modified silicon carbide[J]. Chemistry of Materials, 2000, 12(9): 2770-2780. [15] BUJALSKI D R, CHEN H P, ZANK G A, et al.Synthesis of (PhSiO3/2)0.35(MeSiO3/2)0.40(Me2ViSiO1/2)0.25 resins[J]. Macromolecules, 2003, 36(10): 3529-3539. [16] LI H, GOU Y, WANG H, et al.Preparation of Si-C-O ceramic fibers from commercial silicon resin[J]. Journal of Ceramic Science and Technology, 2018, 9(4): 427-434. [17] 王春华, 樊亚玲, 陈肖寒, 等. 聚丙烯腈纳米纤维膜连续预氧化碳化过程中的结构性能演变[J]. 高分子材料科学与工程, 2022, 38(2): 102-108. WANG Chunhua, FAN Yaling, CHEN Xiaohan, et al.Evolution of structure and properties of polyacrylonitrile nanofiber membranes during pre-oxidation and carbonization[J]. Polymer Materials Science & Engineering, 2022, 38(2): 102-108. [18] HURWITZ F I, HYATT L, GORECKI J, et al.Silsesquioxanes as precursors to ceramic composites[M]//SMOTHERS W. 11th Annual Conference On Composites and Advanced Ceramic Materials: Ceramic Engineering and Science Proceedings. Westerville: The American Ceramic Society, 1987: 732-743. [19] GUO L, MA Q S, HU Z Y, et al.High-temperature evolution behavior of MK silicon resin derived SiOC ceramics under different environments[J]. Ceramics International, 2021, 47(15): 21815-21821. [20] 王堋人. SA型SiC纤维烧结致密化机理及高温性能研究[D]. 长沙: 国防科技大学, 2020. WANG Pengren.Reasearch on sintering densification mechanism and high temperature properties of SA type SiC fiber[D]. Changsha: National University of Defense Technology, 2020.
2025, Vol. 30 
