Tailoring the fibre-to-matrix interface using click chemistry on carbon fibre surfaces

2017 ◽  
Vol 5 (22) ◽  
pp. 11204-11213 ◽  
Author(s):  
Linden Servinis ◽  
Kathleen M. Beggs ◽  
Thomas R. Gengenbach ◽  
Egan H. Doeven ◽  
Paul S. Francis ◽  
...  
Keyword(s):  
Surface Chemistry ◽  
Carbon Fibre ◽  
Click Chemistry ◽  
Chemical Reduction ◽  
Surface Characteristic ◽  
Diazonium Salts ◽  
Effective Strategy ◽  
Matrix Interface ◽  
Carbon Fibres

A convenient and effective strategy to control the surface chemistry of carbon fibres is presented, comprising electro-chemical reduction of aryl diazonium salts onto the surface, followed by ‘click chemistry’ to tether the desired surface characteristic of choice.

Tensometry of carbon fibres and elastomers at the diffractometer at BL20B of the Photon Factory

1998 ◽  
Vol 5 (3) ◽  
pp. 958-961
Author(s):  
D. C. Creagh ◽  
P. M. O'Neill ◽  
R. J. Mills ◽  
S. A. Holt
Keyword(s):  
Carbon Fibre ◽  
Duty Cycle ◽  
Simultaneous Recording ◽  
The Other ◽  
Imaging Plate ◽  
Relaxation Processes ◽  
Carbon Fibres ◽  
Fixed Rate ◽  
Photon Factory ◽  
System Use

Two systems have been developed for the simultaneous recording of the SAXS and the WAXS patterns from carbon fibre and elastomer samples which are placed under stress. The systems have been designed to fit inside the versatile vacuum diffractometer (BIGDIFF) at the Photon Factory. In one system, use is made of the ability to move the imaging-plate cassette. In the other, use has been made of an imaging-plate changer which can deliver up to 13 plates into position with a duty cycle of about 60 s. In this case each imaging plate can record SAXS/WAXS patterns in the range 0.5–20° due to the passage of the beam through the specimen which is mounted in a specially designed tensometer. Because BIGDIFF is a vacuum diffractometer and parasitic scattering is small, exposure times as short as 2 s can give acceptable SAXS/WAXS patterns. The systems have been used for the study of both the change of structure with strain, and the relaxation processes which occur as a result of the sample being strained at a fixed rate by a predetermined amount.

Electrocoating of carbon fibres: A route for interface control in carbon fibre reinforced poly methylmethacrylate?

2005 ◽  
Vol 65 (10) ◽  
pp. 1564-1573 ◽  
Author(s):  
Alexander Bismarck ◽  
Adam F. Lee ◽  
A. Sezai Saraç ◽  
Eckhard Schulz ◽  
Karen Wilson
Keyword(s):  
Carbon Fibre ◽  
Carbon Fibres ◽  
Interface Control

PROCESSING OF ULTRA-HIGH TEMPERATURE CERAMIC MATRIX COMPOSITES (UHTCMCS) THROUGH RF ENHANCED CHEMICAL VAPOUR INFILTRATION (RF-CVI)

2021 ◽  
Author(s):  
VINOTHINI VENKATACHALAM, ◽  
JON BINNER ◽  
THOMAS REIMER ◽  
BUCKARD ESSER ◽  
STEFANO MUNGIGUERRA ◽  
...  
Keyword(s):  
High Temperature ◽  
Carbon Fibre ◽  
Chemical Vapor Infiltration ◽  
Matrix Composites ◽  
Carbon Fibres ◽  
Temperature Oxidation ◽  
Ceramic Phase ◽  
Wide Range ◽  
The University ◽  
Ultra High Temperature

Carbon fibre (Cf) reinforced Ultra High Temperature Ceramic (UHTC) Matrix Composites (UHTCMCs) have proven to be excellent materials that can survive nearly 3000°C in highly oxidizing environments along with a good specific strength. Consequently, they have excellent potential for use in aerospace applications such as rocket nozzle throats and thermal protection systems (TPS). Due to the presence of the carbon fibres, UHTCMCs offer high strength and modulus combined with excellent thermal shock behaviour whilst the presence of the ultra-high temperature ceramic phase protects the carbon fibres at the application temperatures. High temperature oxidation, thermal ablation behaviour and mechanical properties of the UHTCMC’s relies heavily on the bonding between the carbon fibre and matrices especially the oxides formed to avoid any progressive failure and predict the life of the components. In the present investigation, a radio frequency assisted chemical vapor infiltration (RF-CVI) technique has been used to make the 2.5D Cf reinforced ZrB2, ZrB2/carbon matrices composites with various interphase materials. The advantage of RF heating is that it creates an inverse temperature profile in the sample, which means that the infiltration starts from inside and progresses outwards. This allows the time needed for processing to be reduced very significantly compared to the conventional CVI process. This presentation will report on the latest results from the research that has been undertaken at the University of Birmingham, including the results from a wide range of testing that has been undertaken at both DLR in Germany and the University of Naples in Italy.

Comparison of carbon fibre/epoxy composites reinforced by short aramid and carbon fibres

1999 ◽  
Vol 41 (6) ◽  
pp. 575-582 ◽  
Author(s):  
Laurence Walker ◽  
Xiao-Zhi Hu
Keyword(s):  
Carbon Fibre ◽  
Epoxy Composites ◽  
Carbon Fibres

scholarly journals Effect of Carbon Nanotube Deposition Time to the Surface of Carbon Fibres on Flexural Strength of Resistance Welded Carbon Fibre Reinforced Thermoplastics Using Carbon Nanotube Grafted Carbon Fibre as Heating Element

2019 ◽  
Vol 3 (1) ◽  
pp. 9 ◽  
Author(s):  
Kazuto Tanaka ◽  
Takanobu Nishikawa ◽  
Kazuhiro Aoto ◽  
Tsutao Katayama
Keyword(s):  
Shear Strength ◽  
Carbon Nanotube ◽  
Flexural Strength ◽  
Carbon Fibre ◽  
Deposition Time ◽  
Heating Element ◽  
Resistance Heating ◽  
Carbon Fibres ◽  
Lap Shear ◽  
Reinforced Thermoplastics

In recent years, carbon fibre reinforced thermoplastics (CFRTP) are expected to be used as lightweight structural materials for mass-produced vehicles. CFRTP with thermoplastics as matrix allows us to weld them using melting of matrix by heating. We have been developing a direct resistance heating method, which uses carbon fibres as the resistance heating element. Carbon nanotube (CNT) is expected to be used as additive to FRP and we reported that the fibre/matrix interfacial shear strength was improved by grafting CNT on the surface of carbon fibres and tensile lap-shear strength was improved by using CNT grafted carbon fibre as the heating element for welding. For the practical use of CFRTP for structural parts, flexural strength is also necessary to be evaluated. In this study, flexural test was carried out to clarify the effect of CNT deposition time to the surface of carbon fibres on flexural strength of resistance welded CFRTP using CNT grafted carbon fibre as the heating element. The highest flexural strength was obtained when CNT10, for which CNT is grafted on the carbon fibres for deposition time of 10 min, was used for the heating element of resistance welding. In the case of CNT deposition time of 60 min, the lowest flexural strength was obtained because of the poor impregnation of the resin into the carbon fibre due to the excess CNT on the carbon fibres.

The use of XPS and labelling techniques to study the surface chemistry of carbon fibres

1987 ◽  
Vol 20 (3) ◽  
pp. 306-310 ◽  
Author(s):  
P Denison ◽  
F R Jones ◽  
J F Watts
Keyword(s):  
Surface Chemistry ◽  
Carbon Fibres
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