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C/SiOC Composites by a Modified PIP Using Solid Polysiloxane: Fabrication, Microstructure and Mechanical Properties
Wu Qing-Qing; Wang Zhen; Ding Qi; Ni De-Wei; Kan Yan-Mei; Dong Shao-Ming
2019-12-20
Source PublicationJOURNAL OF INORGANIC MATERIALS
ISSN1000-324X
Volume34Issue:12Pages:1349
SubtypeArticle
AbstractA modified polymer infiltration and pyrolysis method (PIP) was developed to enhance the densification of C/SiOC composites, using molten MK resin (polymethylsilsesquioxane) as precursor. Organic sulfonic acid was added as cross-linking agent to lower the curing temperature. The cross-linking mechanism and ceramization behavior of MK resin was studied. A high ceramic yield of about 85wt% and low free carbon content below 3wt% are achieved, with excellent high-temperature stability of the derived SiOC. The modified PIP approach presents a high densification efficiency. After only 8 PIP cycles, the final C/SiOC composites possess a density of about 1.81 g/cm(3). Compared with those composites fabricated by conventional PIP process, the C/SiOC composites prepared by modified PIP process show a much denser microstructure with much more improved densification efficiency. Bending strength of the as-fabricated C/SiOC composites is of (312 +/- 25) MPa, showing obvious non-brittle fracture behavior.
KeywordC/SiOC composite high-efficient PIP microstructure cross-linking mechanism
DOI10.15541/jim20190080
WOS KeywordC-F/SIOC COMPOSITES ; TEMPERATURE ; CERAMICS ; INFILTRATION ; EVOLUTION ; BEHAVIOR ; CARBON ; PYROLYSIS
Language英语
WOS Research AreaMaterials Science
PublisherSCIENCE PRESS
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Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27444
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Wu Qing-Qing,Wang Zhen,Ding Qi,et al. C/SiOC Composites by a Modified PIP Using Solid Polysiloxane: Fabrication, Microstructure and Mechanical Properties[J]. JOURNAL OF INORGANIC MATERIALS,2019,34(12):1349.
APA Wu Qing-Qing,Wang Zhen,Ding Qi,Ni De-Wei,Kan Yan-Mei,&Dong Shao-Ming.(2019).C/SiOC Composites by a Modified PIP Using Solid Polysiloxane: Fabrication, Microstructure and Mechanical Properties.JOURNAL OF INORGANIC MATERIALS,34(12),1349.
MLA Wu Qing-Qing,et al."C/SiOC Composites by a Modified PIP Using Solid Polysiloxane: Fabrication, Microstructure and Mechanical Properties".JOURNAL OF INORGANIC MATERIALS 34.12(2019):1349.
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