Preparation and Characteristic of Hollow BN Fibers Derived from Organic Precursors

doi:10.3724/SP.J.1077.2012.12074

Journal of Inorganic Materials ›› 2012, Vol. 27 ›› Issue (11): 1216-1222.DOI: 10.3724/SP.J.1077.2012.12074

• Research Paper • Previous Articles Next Articles

Preparation and Characteristic of Hollow BN Fibers Derived from Organic Precursors

CHEN Ming-Wei^{1, 2}, Ge Min¹, ZHANG Wei-Gang¹

(1. State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China; 2. Graduate University of the Chinese Academy of Sciences, Beijing 100049, China)

Received:2012-02-06 Revised:2012-04-03 Published:2012-11-20 Online:2012-10-25
About author:CHEN Ming-Wei. E-mail: mwchen@home.ipe.ac.cn
Supported by:
863 Program (2012AA03A210)

Abstract

Abstract: BN fibers with cylindrical hollow structures were prepared from organic polymeric precursors through melt spinning, curing and pyrolysis processes. The microstructure, solid phase and morphologies of the synthesized hollow BN fibers were investigated by XRD, SEM and TEM, respectively. Moreover, the dielectric properties of BN hollow fibers were also measured. The results show that heating temperature and heating rate are the key factors affected the structure and dielectric properties of BN hollow fibers. Moreover, the BN hollow fibers synthesized in the optimized process conditions have good resistance towards oxidation up to 950℃ in an oxidation atmosphere, and possess very low dielectric constant (ε′) and loss tangent (tanδ) less than 3.30 and 0.00064 (7-18 GHz), respectively.

Key words: boron nitride, ceramic fibers, dielectric properties, organic polymetric precursor

CLC Number:

TQ343

CHEN Ming-Wei, Ge Min, ZHANG Wei-Gang. Preparation and Characteristic of Hollow BN Fibers Derived from Organic Precursors[J]. Journal of Inorganic Materials, 2012, 27(11): 1216-1222.

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Preparation and Characteristic of Hollow BN Fibers Derived from Organic Precursors

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