Polyacrylonitrile fibers treated by hydrazine hydrate as a basis for the production of carbon fibers

1983 ◽  
Vol 21 (4) ◽  
pp. 1223-1226 ◽  
Author(s):  
I. Mladenov ◽  
M. Ljubcheva
Keyword(s):  
Hydrazine Hydrate ◽  
Carbon Fibers

EXELFS Studies of Carbon Fibers

1990 ◽  
Vol 48 (2) ◽  
pp. 72-73
Author(s):  
V. Serin ◽  
K. Hssein ◽  
G. Zanchi ◽  
J. Sévely
Keyword(s):  
Carbon Fibers ◽  
Energy Analysis ◽  
Electron Excitation ◽  
Complex Structures ◽  
High Modulus ◽  
Promising Technique ◽  
X Ray ◽  
Fine Structures ◽  
X Ray Absorption

The present developments of electron energy analysis in the microscopes by E.E.L.S. allow an accurate recording of the spectra and of their different complex structures associated with the inner shell electron excitation by the incident electrons (1). Among these structures, the Extended Energy Loss Fine Structures (EXELFS) are of particular interest. They are equivalent to the well known EXAFS oscillations in X-ray absorption spectroscopy. Due to the EELS characteristic, the Fourier analysis of EXELFS oscillations appears as a promising technique for the characterization of composite materials, the major constituents of which are low Z elements. Using EXELFS, we have developed a microstructural study of carbon fibers. This analysis concerns the carbon K edge, which appears in the spectra at 285 eV. The purpose of the paper is to compare the local short range order, determined by this way in the case of Courtauld HTS and P100 ex-polyacrylonitrile carbon fibers, which are high tensile strength (HTS) and high modulus (HM) fibers respectively.

Coating of continuous carbon fibers with double layers by chemical vapor deposition

2001 ◽  
Vol 11 (PR3) ◽  
pp. Pr3-885-Pr3-892 ◽  
Author(s):  
N. Popovska ◽  
S. Schmidt ◽  
E. Edelmann ◽  
V. K. Wunder ◽  
H. Gerhard ◽  
...  
Keyword(s):  
Chemical Vapor Deposition ◽  
Carbon Fibers ◽  
Vapor Deposition ◽  
Chemical Vapor ◽  
Double Layers

Morphology and properties of PA6 hybrid composites filled with short carbon fibers and organoclay

2016 ◽  
Vol 2 (3) ◽  
pp. 47-57 ◽  
Author(s):  
S.S. Pesetskii ◽  
S.P. Bogdanovich ◽  
V.V. Dubrovskii ◽  
T.M. Sodyleva ◽  
V.N. Aderikha ◽  
...  
Keyword(s):  
Carbon Fibers ◽  
Hybrid Composites ◽  
Short Carbon

Influence of carbon fibers and tungsten disulfide on the properties and structure of polytetrafluoroethylene

2018 ◽  
Vol 4 (3) ◽  
pp. 26-34
Author(s):  
A. A. Okhlopkova ◽  
A. P., Vasilev ◽  
T. S. Struchkova ◽  
A. G. Alekseev ◽  
P. N. Grakovich
Keyword(s):  
Carbon Fibers ◽  
Tungsten Disulfide ◽  
And Tungsten

Microwave Absorbing Properties of Carbon Fibers Modified with BN/SiC Composite Coatings

2014 ◽  
Vol 29 (10) ◽  
pp. 1093 ◽  
Author(s):  
ZHOU Wei ◽  
XIAO Peng ◽  
LI Yang ◽  
LUO Heng ◽  
HONG Wen
Keyword(s):  
Carbon Fibers ◽  
Composite Coatings ◽  
Microwave Absorbing Properties ◽  
Microwave Absorbing

Cytocompatibility of Carbon Nanofiber Materials for Neural Applications

2003 ◽  
Vol 774 ◽  
Author(s):  
Janice L. McKenzie ◽  
Michael C. Waid ◽  
Riyi Shi ◽  
Thomas J. Webster
Keyword(s):  
Carbon Fiber ◽  
Surface Energy ◽  
Carbon Nanofibers ◽  
Carbon Fibers ◽  
Carbon Nanofiber ◽  
Fiber Composite ◽  
Scar Tissue ◽  
Pc 12 Cells ◽  
Low Surface Energy ◽  
Poly Carbonate

AbstractSince the cytocompatibility of carbon nanofibers with respect to neural applications remains largely uninvestigated, the objective of the present in vitro study was to determine cytocompatibility properties of formulations containing carbon nanofibers. Carbon fiber substrates were prepared from four different types of carbon fibers, two with nanoscale diameters (nanophase, or less than or equal to 100 nm) and two with conventional diameters (or greater than 200 nm). Within these two categories, both a high and a low surface energy fiber were investigated and tested. Astrocytes (glial scar tissue-forming cells) and pheochromocytoma cells (PC-12; neuronal-like cells) were seeded separately onto the substrates. Results provided the first evidence that astrocytes preferentially adhered on the carbon fiber that had the largest diameter and the lowest surface energy. PC-12 cells exhibited the most neurites on the carbon fiber with nanodimensions and low surface energy. These results may indicate that PC-12 cells prefer nanoscale carbon fibers while astrocytes prefer conventional scale fibers. A composite was formed from poly-carbonate urethane and the 60 nm carbon fiber. Composite substrates were thus formed using different weight percentages of this fiber in the polymer matrix. Increased astrocyte adherence and PC-12 neurite density corresponded to decreasing amounts of the carbon nanofibers in the poly-carbonate urethane matrices. Controlling carbon fiber diameter may be an approach for increasing implant contact with neurons and decreasing scar tissue formation.

Time-temperature dependence of flexural strength of unidirectional CFRP using pitch based carbon fibers.

1991 ◽  
Vol 40 (449) ◽  
pp. 192-198
Author(s):  
Yasushi MIYANO ◽  
Yukio TAKAMURA ◽  
Megumu SUZUKI ◽  
Michihiro MOHRI
Keyword(s):  
Flexural Strength ◽  
Temperature Dependence ◽  
Carbon Fibers

Influence of graphitization conditions on structural and mechanical properties of polyacrylonitrile-based carbon fibers

2018 ◽  
pp. 46-59
Author(s):  
V. M. Samoilov ◽  
◽  
D. B. Verbets ◽  
I. A. Bubnenkov ◽  
N. N. Steparyova ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Fibers
Sign in / Sign up

Export Citation Format

Share Document