Effect of carbonization time on the structure and electromagnetic parameters of porous-hollow carbon fibres

被引：28

作者：

Xie, Wei ^{[1
]}

Cheng, Hai-Feng ^{[1
]}

Chu, Zeng-Yong ^{[1
]}

Chen, Zhao-Hui ^{[1
]}

机构：

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

来源：

CERAMICS INTERNATIONAL | 2009年 / 35卷 / 07期

关键词：

Carbon fibres; Carbonization; Electromagnetic parameters; MICROWAVE-ABSORBING PROPERTIES; GAS SEPARATION; MEMBRANES;

D O I：

10.1016/j.ceramint.2009.03.002

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A series of polyacrylonitrile-based porous-hollow carbon fibres (PAN-PHCFs) were prepared by carbonizing PAN porous-hollow cured fibres at 1073 K for different times in nitrogen. The effects of carbonization time on the structure, electrical volume conductivity and electromagnetic parameters were investigated. Results indicate that the degree of graphitization increases as carbonization time increases. The electrical volume conductivity increases as the degree of graphitization and carbonization time increase. The real and imaginary parts of the complex permittivity (epsilon' and epsilon '') increase with carbonization time increasing. The values of epsilon' and epsilon '' of composites of PAN-PHCFs and paraffin are 13.76 and 10.09 when the carbonization time is 240 min, and the electrical volume conductivity of PAN-PHCFs is 190.47 Omega(-1) m(-1). (C) 2009 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：2705 / 2710

页数：6

共 26 条

[1]

ALMEIDA C, 2006, CARBON, V44, P2869, DOI DOI 10.1016/J.CARBON.2006.06.002

[2] Stabilization and carbonization of gel spun polyacrylonitrile/single wall carbon nanotube composite fibers [J].

Chae, Han Gi ;

Minus, Marilyn L. ;

Rasheed, Asif ;

Kumar, Satish .

POLYMER, 2007, 48 (13) :3781-3789

[3] The effect of processing on the structure and properties of carbon fibers [J].

Edie, DD .

CARBON, 1998, 36 (04) :345-362

[4] Electromagnetic and microwave absorbing properties of multi-walled carbon nanotubes/polymer composites [J].

Fan, Zhuangjun ;

Luo, Guohua ;

Zhang, Zengfu ;

Zhou, Li ;

Wei, Fei .

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2006, 132 (1-2) :85-89

[5] Dual-layer hollow carbon fiber membranes for gas separation consisting of carbon and mixed matrix layers [J].

Jiang, Lan Ying ;

Chung, Tai-Shung ;

Rajagopalan, Raj .

CARBON, 2007, 45 (01) :166-172

[6]

John KL, 2005, MATER CHEM PHYS, V91, P471

[7] Carbonization and graphitization behavior of decacyclene [J].

Kokaji, K ;

Oya, A ;

Maruyama, K ;

Yamada, Y ;

Shiraishi, M .

CARBON, 1997, 35 (02) :253-258

[8] Investigation of the microwave-absorbing properties of Fe-filled carbon nanotubes [J].

Lin, Haiyan ;

Zhu, Hong ;

Guo, Hongfan ;

Yu, Liufang .

MATERIALS LETTERS, 2007, 61 (16) :3547-3550

[9]

LINDA V, 2007, COMPOS PART A-APPL S, V38, P1354

[10] A two-layer dielectric absorber covering a wide frequency range [J].

Luo, Fa ;

Zhu, Dong-mei ;

Zhou, Wan-cheng .

CERAMICS INTERNATIONAL, 2007, 33 (02) :197-200

← 1 2 3 →