有机前驱体法BN纤维的制备和表征

doi:10.3724/SP.J.1077.2012.12074

无机材料学报 ›› 2012, Vol. 27 ›› Issue (11): 1216-1222.DOI: 10.3724/SP.J.1077.2012.12074 CSTR: 32189.14.SP.J.1077.2012.12074

有机前驱体法BN纤维的制备和表征

陈明伟^1,2, 戈敏¹, 张伟刚¹

(1. 中国科学院过程工程研究所, 多相复杂系统国家重点实验室, 北京100190; 2. 中国科学院研究生院, 北京100049)

收稿日期:2012-02-06 修回日期:2012-04-03 出版日期:2012-11-20 网络出版日期:2012-10-25
作者简介:陈明伟(1984–), 男, 博士研究生. E-mail: mwchen@home.ipe.ac.cn
基金资助:
“863计划”重点项目(2012AA03A210)

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)

摘要/Abstract

摘要： 以聚合环硼氮烷前驱体(PBN)为原料, 通过熔融纺丝、不熔化处理、高温热解陶瓷化等工艺制备了BN中空陶瓷纤维. 利用XRD、SEM、TEM等对BN中空纤维的物相、结构和形貌进行了分析和表征, 同时测量了BN中空纤维的抗氧化性能及介电性能. 研究表明, 升温速率和热解温度是影响BN中空纤维的结构及介电性能的重要因素. 在优化工艺条件下, 制备BN中空纤维介电性能优异, 介电常数ε′和介电损耗正切值tanδ分别小于3.30和0.00064(室温, 7~18 GHz), 在氧化气氛中的使用温度高达950℃.

关键词: 氮化硼, 陶瓷纤维, 介电性能, 有机前驱体法

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

中图分类号:

TQ343

陈明伟, 戈敏, 张伟刚. 有机前驱体法BN纤维的制备和表征[J]. 无机材料学报, 2012, 27(11): 1216-1222.

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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有机前驱体法BN纤维的制备和表征

Preparation and Characteristic of Hollow BN Fibers Derived from Organic Precursors

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