Nearly stoichiometric BN fiber with low dielectric constant derived from poly[(alkylamino)borazine]

被引：40

作者：

Lei, Yongpeng ^{[1
]}

Wang, Yingde ^{[1
]}

Song, Yongcai ^{[1
]}

Li, Yihe ^{[2
]}

Deng, Cheng ^{[1
]}

Wang, Hao ^{[1
]}

Xie, Zhengfang ^{[1
]}

机构：

[1] Natl Univ Def Technol, Key Lab Adv Ceram Fiber & Composites, Coll Aerosp & Mat Engn, Changsha 410073, Hunan, Peoples R China

[2] Natl Univ Def Technol, Coll Sci, Changsha 410073, Hunan, Peoples R China

来源：

MATERIALS LETTERS | 2011年 / 65卷 / 02期

关键词：

Polymers; Fiber technology; Ceramics; Dielectric properties; BORON-NITRIDE FIBERS; PRECURSOR; ROUTE;

D O I：

10.1016/j.matlet.2010.09.089

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nearly stoichiometric boron nitride (BN) fiber with low dielectric constant was prepared by curing, pyrolysis of a novel poly[(alkylamino)borazine] (PAAB) under NH3 up to 1200 degrees C in a ceramic yield of 60 wt.%. Based on IR, XRD, XPS and elemental analysis (EA), the fiber with a composition of BN1.09 shows a characteristic of turbostratic BN (t-BN). The tensile strength is approximately 0.6 GPa with 13 mu m in diameter. Moreover, the fiber possesses very low real part (epsilon') of 2.66 and loss tangent (tan delta) of 0.0012 at 10 GHz, respectively, making it possible to be used in microwave-transparent material. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：157 / 159

页数：3

共 26 条

[1] Boron-modified polysilazane as a novel single-source precursor for SiBCN ceramic fibers: synthesis melt-sinning, curing and ceramic conversion [J].