scholarly journals Improving Dispersion of Recycled Discontinuous Carbon Fibres to Increase Fibre Throughput in the HiPerDiF Process

Materials ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1544 ◽  
Author(s):  
Thomas R. Pozegic ◽  
Samantha Huntley ◽  
Marco L. Longana ◽  
Suihua He ◽  
R. M. Indrachapa Bandara ◽  
...  
Keyword(s):  
Interfacial Adhesion ◽  
Anionic Surfactants ◽  
Aqueous Suspension ◽  
Single Fibre ◽  
Carbon Fibres ◽  
Shear Rates ◽  
Optimum Stability ◽  
Disperse Carbon ◽  
Fibre Composites ◽  
Improved Stability

In order to increase the material throughput of aligned discontinuous fibre composites using technologies such as HiPerDiF, stability of the carbon fibres in an aqueous solution needs to be achieved. Subsequently, a range of surfactants, typically employed to disperse carbon-based materials, have been assessed to determine the most appropriate for use in this regard. The optimum stability of the discontinuous fibres was observed when using the anionic surfactant, sodium dodecylbenzene sulphonate, which was superior to a range of other non-ionic and anionic surfactants, and single-fibre fragmentation demonstrated that the employment of sodium dodecylbenzene sulphonate did not affect the interfacial adhesion between fibres. Rheometry was used to complement the study, to understand the potential mechanisms of the improved stability of discontinuous fibres in aqueous suspension, and it led to the understanding that the increased viscosity was a significant factor. For the shear rates employed, fibre deformation was neither expected nor observed.

scholarly journals A novel approach to functionalise pristine unsized carbon fibre using in situ generated diazonium species to enhance interfacial shear strength

2015 ◽  
Vol 3 (7) ◽  
pp. 3360-3371 ◽  
Author(s):  
L. Servinis ◽  
L. C. Henderson ◽  
L. M. Andrighetto ◽  
M. G. Huson ◽  
T. R. Gengenbach ◽  
...  
Keyword(s):  
Shear Strength ◽  
Carbon Fibre ◽  
Interfacial Shear Strength ◽  
Single Fibre ◽  
Interfacial Shear ◽  
Carbon Fibres ◽  
Novel Approach ◽  
Fibre Composites

An in situ diazonium grafting methodology was used to decorate the surface of carbon fibres with pendant amines. This methodology was shown to greatly affect IFSS in single fibre composites.

Evaluation of interfacial properties between carbon fibres and semicrystalline thermoplastic matrices in single-fibre composites

1992 ◽  
Vol 27 (18) ◽  
pp. 5108-5112 ◽  
Author(s):  
N. Ogata ◽  
H. Yasumoto ◽  
K. Yamasaki ◽  
Hu Yu ◽  
T. Ogihara ◽  
...  
Keyword(s):  
Interfacial Properties ◽  
Single Fibre ◽  
Carbon Fibres ◽  
Fibre Composites

An Energy-Based interpretation of Interfacial Adhesion from Single Fibre Composite Fragmentation Testing

1993 ◽  
Vol 2 (5) ◽  
pp. 096369359300200 ◽  
Author(s):  
H.D. Wagner ◽  
S. Ling
Keyword(s):  
Interfacial Adhesion ◽  
Mechanical Characteristics ◽  
Interfacial Shear Strength ◽  
Fibre Composite ◽  
Stress Transfer ◽  
Single Fibre ◽  
Transfer Length ◽  
Fragmentation Test ◽  
Energy Balance Approach ◽  
Fibre Matrix

An energy balance approach is proposed for the single fibre composite (or fragmentation) test, by which the degree of fibre-matrix bonding is quantified by means of the interfacial energy, rather than the interfacial shear strength, as a function of the fibre geometrical and mechanical characteristics, the stress transfer length, and the debonding length. The validity of the approach is discussed using E-glass fibres embedded in epoxy, both in the dry state and in the presence of hot distilled water.

N-Doped ordered mesoporous carbon grafted onto activated carbon fibre composites with enhanced activity for the electro-Fenton degradation of Brilliant Red X3B dye

RSC Advances ◽  
2014 ◽  
Vol 4 (104) ◽  
pp. 60168-60175 ◽  
Author(s):  
Qiaoli Peng ◽  
Zehui Zhang ◽  
Ze'ai Huang ◽  
Wei Ren ◽  
Jie Sun
Keyword(s):  
Activated Carbon ◽  
Mesoporous Carbon ◽  
Ordered Mesoporous Carbon ◽  
Carbon Composites ◽  
Carbon Fibres ◽  
Ordered Mesoporous ◽  
Fibre Composites ◽  
Activated Carbon Fibres ◽  
Carbon Fibre Composites ◽  
Activated Carbon Fibre

N-Doped ordered mesoporous carbon (N-OMC) was successfully prepared using dicyandiamide (C2H4N4) as the nitrogen source and was grafted onto activated carbon fibres (ACFs) to form carbon composites (ACF@N-OMC).

scholarly journals Investigation of tensile strength and dimensional variation of T700 carbon fibres using an improved experimental setup

2019 ◽  
Vol 39 (3-4) ◽  
pp. 144-162 ◽  
Author(s):  
Faisal Islam ◽  
Sébastien Joannès ◽  
Steve Bucknell ◽  
Yann Leray ◽  
Anthony Bunsell ◽  
...  
Keyword(s):  
Large Data ◽  
Single Fibre ◽  
Experimental Methodology ◽  
Fibre Strength ◽  
Carbon Fibres ◽  
Data Set ◽  
Strength Data ◽  
Statistical Representation ◽  
Dimensional Variation ◽  
Single Fibres

Knowledge of fibre strength is crucial for understanding the failure behaviour of fibre-reinforced composite materials and structures. Measuring the properties of technical fibres has been known to be very challenging, and the different challenges associated with single fibre characterisation are illustrated in this article. An improved and automated experimental methodology for tensile testing of single fibres is described. This process has been used to generate fibre strength data for T700 carbon fibres at three different gauge lengths of 4, 20 and 30 mm. The variability in strength and modulus of short fibres was found to be much larger than that of longer fibres. Statistical analysis of this large data set has also highlighted the limitations of the standard Weibull distribution for representing fibre strength behaviour. The need for a better statistical representation of the fibre strength data in order to provide a more accurate description of the fibre strength behaviour has been emphasized.

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