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Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK)

Changsha,China,10.16-10.18,2010

ISBN: 978-1-935068-41-9 Scientific Research Publishing, USA

E-Book 2313pp Pub. Date: October 2010

Category: Chemistry & Materials Science

Price: $360

Title: Study on Composition and Structure Evolution of Continuous Cured Polyferrocarbosilane Fibers during the Process of Inorganic Transformation
Source: Proceedings of the 7th National Conference on Functional Materials and Applications (FMA 2010 E-BOOK) (pp 1184-1190)
Author(s): Zhi-yan Chen, School of Materials Science and Engineering, Central South University of forestry and Technology, Changsha 410004; 2Key Lab of Ceramic
Jun Wang, Fibers and the Composites, National University of Defense Technology, Changsha 410073
Xiao-dong Li, Fibers and the Composites, National University of Defense Technology, Changsha 410073
Abstract: A new polymer precursor named as polyferrocarbosilane(PFCS) was synthesized from polydimethylsilane and ferrocene. Continuous Fe-containing silicon carbide radar-wave absorbing fibers(SiC(Fe)) were prepared with the precursor by polymer-derived method.The evolutions of the SiC(Fe) fibers, structure during the preparation were investigated by TG, TG-MS, FT-IR, XRD, Si-NMR, RMS and so on. The results show that the evolutions of structure of continuous cured PFCS fibers included three stages: crosslinking among themolecules of the fibers(≤650℃), basical inorganic transformation(650~850℃), and complete inorganic transformation(850~1300℃). The main transformation of ferrocence in the process of PFCS prolysis may be from ferrocene, Fe5Si3 to Fe3Si.
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