The Preparation of High Performance Carbon Fibers Developed from Stepwise Stabilization Process

1988 ◽  
Author(s):  
Phaichit Chiranairadul ◽  
Tse-Hao Ko ◽  
Hsing-Yie Ting ◽  
Chung-Hua Lin
2021 ◽  
Author(s):  
Daniel M. Mijailovic ◽  
Vuk V. Radmilović ◽  
Uros C. Lacnjevac ◽  
Dusica B Stojanovic ◽  
Karen Bustillo ◽  
...  

We herein report a simple two–step procedure for fabricating tetragonal CoMn2O4 spinel nanocrystals on carbon fibers. The battery–type behavior of these composite fibers arises from the redox activity of CoMn2O4...


2017 ◽  
Vol 43 (10) ◽  
pp. 7916-7921 ◽  
Author(s):  
Shulan Jiang ◽  
Siyi Cheng ◽  
Yuanyuan Huang ◽  
Tielin Shi ◽  
Zirong Tang

2020 ◽  
Vol 3 (12) ◽  
pp. 12703-12708
Author(s):  
Guojie Chao ◽  
Longsheng Zhang ◽  
Shijia Yuan ◽  
Tiantian Xue ◽  
Fan Yang ◽  
...  

Fibers ◽  
2020 ◽  
Vol 8 (6) ◽  
pp. 33 ◽  
Author(s):  
Spyridon Soulis ◽  
George Konstantopoulos ◽  
Elias P. Koumoulos ◽  
Costas A. Charitidis

The aim of this work is to review a possible correlation of composition, thermal processing, and recent alternative stabilization technologies to the mechanical properties. The chemical microstructure of polyacrylonitrile (PAN) is discussed in detail to understand the influence in thermomechanical properties during stabilization by observing transformation from thermoplastic to ladder polymer. In addition, relevant literature data are used to understand the comonomer composition effect on mechanical properties. Technologies of direct fiber heating by irradiation have been recently involved and hold promise to enhance performance, reduce processing time and energy consumption. Carbon fiber manufacturing can provide benefits by using higher comonomer ratios, similar to textile grade or melt-spun PAN, in order to cut costs derived from an acrylonitrile precursor, without suffering in regard to mechanical properties. Energy intensive processes of stabilization and carbonization remain a challenging field of research in order to reduce both environmental impact and cost of the wide commercialization of carbon fibers (CFs) to enable their broad application.


2019 ◽  
Vol 7 (7) ◽  
pp. 3298-3306 ◽  
Author(s):  
Xiaohua Zhang ◽  
Hengxiang Li ◽  
Bing Qin ◽  
Qun Wang ◽  
Xiaohan Xing ◽  
...  

Porous graphitic carbon sheets grafted on microfibers were synthesized with the aid of a green activating–graphitizing agent K3[Fe(C2O4)3].


2012 ◽  
Vol 5 (5) ◽  
pp. 596-626 ◽  
Author(s):  
V. J. Ferrari ◽  
J. B. de Hanai

Resistance to corrosion, high tensile strength, low weight, easiness and rapidity of application, are characteristics that have contributed to the spread of the strengthening technique characterized by bonding of carbon fibers reinforced polymer (CFRP). This research aimed to develop an innovate strengthening method for RC beams, based on a high performance cement-based composite of steel fibers (macro + microfibers) to be applied as a transition layer. The purpose of this transition layer is better control the cracking of concrete and detain or even avoid premature debonding of strengthening. A preliminary study in short beams molded with steel fibers and strengthened with CFRP sheet, was carried out where was verified that the conception of the transition layer is valid. Tests were developed to get a cement-based composite with adequate characteristics to constitute the layer transition. Results showed the possibility to develop a high performance material with a pseudo strain-hardening behavior, high strength and fracture toughness. The application of the strengthening on the transition layer surface had significantly to improve the performance levels of the strengthened beam. It summary, it was proven the efficiency of the new strengthening technique, and much information can be used as criteria of projects for repaired and strengthened structures.


Sign in / Sign up

Export Citation Format

Share Document