scholarly journals Electrolytic Surface Treatment for Improved Adhesion between Carbon Fibre and Polycarbonate

Materials ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 2253 ◽  
Author(s):  
Jan Henk Kamps ◽  
Luke Henderson ◽  
Christina Scheffler ◽  
Ruud van der Heijden ◽  
Frank Simon ◽  
...  
Keyword(s):  
Carbon Fibre ◽  
Surface Treatment ◽  
Photoelectron Spectroscopy ◽  
Surface Characteristics ◽  
Fibre Surface ◽  
Single Fibre ◽  
Optimum Level ◽  
Pull Out ◽  
Force Displacement ◽  
Fibre Matrix

To achieve good mechanical properties of carbon fibre-reinforced polycarbonate composites, the fibre-matrix adhesion must be dialled to an optimum level. The electrolytic surface treatment of carbon fibres during their production is one of the possible means of adapting the surface characteristics of the fibres. The production of a range of tailored fibres with varying surface treatments (adjusting the current, potential, and conductivity) was followed by contact angle, inverse gas chromatography and X-ray photoelectron spectroscopy measurements, which revealed a significant increase in polarity and hydroxyl, carboxyl, and nitrile groups on the fibre surface. Accordingly, an increase in the fibre-matrix interaction indicated by a higher interfacial shear strength was observed with the single fibre pull-out force-displacement curves. The statistical analysis identified the correlation between the process settings, fibre surface characteristics, and the performance of the fibres during single fibre pull-out testing.

Correlation Between Fibre Surface Energetics and Fibre-Matrix Adhesion in Carbon Fibre Reinforced Peek Composite

1989 ◽  
Vol 170 ◽  
Author(s):  
D J Hodge ◽  
B A Middlemiss ◽  
J A Peacock
Keyword(s):  
Carbon Fibre ◽  
Surface Treatment ◽  
Photoelectron Spectroscopy ◽  
Interfacial Strength ◽  
Fibre Surface ◽  
Work Of Adhesion ◽  
Carbon Fibres ◽  
Matrix Adhesion ◽  
Peek Composite ◽  
Fibre Matrix

AbstractSurface energies of carbon fibres at different levels at surface treatment have been determined by a wetting force technique and related to fibre-matrix adhesion in carbon fibre reinforced PEEK composite. The effect of oxidative surface treatment on the surface free energy is detailed, along with the changes in surface oxygen and nitrogen content, as determined by X-ray photoelectron spectroscopy (XPS). The work of adhesion has been calculated for the carbon fibres and thermoplastic, which correlate well with experimental determination of interfacial strength. The technique can therefore be used to predict adhesion levels in fibre reinforced composites.

Interfacial features of polyamide 6 composites filled with oxidation modified carbon fibres

2009 ◽  
Vol 223 (9) ◽  
pp. 2135-2141 ◽  
Author(s):  
J Li
Keyword(s):  
Carbon Fibre ◽  
Surface Treatment ◽  
Photoelectron Spectroscopy ◽  
Interfacial Adhesion ◽  
Fibre Surface ◽  
Polyamide 6 ◽  
Ozone Treatment ◽  
Carbon Fibres ◽  
Air Oxidation ◽  
Pull Out

Polyacrylonitrile (PAN)-based carbon fibres were surface treated by ozone modification method and air-oxidation treatment. The interfacial properties of carbon fibre reinforced polyamide 6 (CF/PA6) composites were investigated by means of the single fibre pull-out tests. The surface characteristics of carbon fibres were characterized by X-ray photoelectron spectroscopy (XPS). As a result, it was found that interfacial shear strength values of the composites with ozone-treated carbon fibre are greatly increased. XPS results show that ozone treatment increases the amount of carboxyl groups on the carbon fibre surface, thus the interfacial adhesion between carbon fibre and PA6 matrix is effectively promoted. The effect of surface treatment of carbon fibres on the tribological properties of CF/PA6 composites was comparatively investigated. Experimental results revealed that surface treatment can effectively improve the interfacial adhesion between carbon fibre and PA6 matrix. Thus the wear resistance was significantly improved.

A Novel Approach to the Functionalisation of Pristine Carbon Fibre Using Azomethine 1,3-Dipolar Cycloaddition

2015 ◽  
Vol 68 (2) ◽  
pp. 335 ◽  
Author(s):  
Linden Servinis ◽  
Thomas R. Gengenbach ◽  
Mickey G. Huson ◽  
Luke C. Henderson ◽  
Bronwyn L. Fox
Keyword(s):  
Carbon Fibre ◽  
Photoelectron Spectroscopy ◽  
Cycloaddition Reaction ◽  
Fibre Surface ◽  
Single Fibre ◽  
Dipolar Cycloaddition ◽  
Force Microscopy ◽  
Atomic Force ◽  
Novel Approach ◽  
The Matrix

We demonstrate the utilisation of an azomethine 1,3-dipolar cycloaddition reaction with carbon fibre to graft complex molecules onto the fibre surface. In an effort to enhance the interfacial interaction of the fibre to the matrix, the functionalised fibres possessed a pendant amine that is able to interact with epoxy resins. Functionalisation was supported by X-ray photoelectron spectroscopy and the grafting process had no detrimental effects on tensile strength compared with the control (untreated) fibres. Also, microscopic roughness (as determined by atomic force microscopy) and fibre topography were unchanged after the described treatment process. This methodology complements existing methodology aimed at enhancing the surface of carbon fibres for advanced material applications while not compromising the desirable strength profile. Single-fibre fragmentation tests show a statistically significant decrease in fragment length compared with the control fibres in addition to transverse cracking within the curing resin, both of which indicate an enhanced interaction between fibre and resin.

scholarly journals The influence of Carbon Fibre Surface Treatment on Fibre-Fibre Interactions in Multi-Fibre Microcomposites

1994 ◽  
Vol 3 (6) ◽  
pp. 096369359400300 ◽  
Author(s):  
P.W.J. van den Heuvel ◽  
Y.J.W. van der Bruggen ◽  
T. Peijs
Keyword(s):  
Carbon Fibre ◽  
Surface Treatment ◽  
Uniaxial Tension ◽  
Fracture Process ◽  
Fibre Surface ◽  
Carbon Fibres ◽  
Fibre Failure ◽  
Treated Carbon ◽  
Fibre Matrix

Multi-fibre microcomposites were used to study the influence of fibre/matrix adhesion on the fracture process of composites in uniaxial tension. In addition to in-situ microscopic observations, results were quantitatively described using an interaction criterion. In the case of surface treated carbon fibres, fibre-fibre interaction or so-called coordinated fibre failure takes place at inter-fibre spacings of less than nine fibre diameters. Moreover, it was found that the level of fibre surface treatment, i.e. the amount of debonding, significantly influences the amount of fibre-fibre interaction.

scholarly journals Sugar Palm Fibre-Reinforced Unsaturated Polyester Composite Interface Characterisation by Pull-Out Test

2011 ◽  
Vol 471-472 ◽  
pp. 1034-1039 ◽  
Author(s):  
Zulkiflle Leman ◽  
S.M. Sapuan ◽  
S. Suppiah
Keyword(s):  
Sea Water ◽  
Unsaturated Polyester ◽  
Fibre Surface ◽  
Pond Water ◽  
Single Fibre ◽  
Sewage Water ◽  
Natural Fibres ◽  
Pull Out ◽  
Polyester Composite ◽  
Sugar Palm Fibre

Polymer composites using natural fibres as the reinforcing agents have found their use in many applications. However, they do suffer from a few limitations, due to the hydrophilicity of the natural fibres which results in low compatibility with the hydrophobic polymer matrices. This paper aims to determine the best sugar palm (Arenga pinnata) fibre surface treatment to improve the fibre-matrix interfacial adhesion. Fibre surface modifications were carried out by water retting process where the fibres were immersed in sea water, pond water and sewage water for the period of 30 days. The test samples were fabricated by placing a single fibre in an unsaturated polyester resin. Single-fibre pull-out tests showed that freshwater-treated fibres possessed the highest interfacial shear strength, followed by untreated fibres, sewage water-treated fibres, and sea water-treated fibres. Further surface analyses of the samples were performed using a Scanning Electron Microscope (SEM) and an Energy Dispersive X-ray Spectroscopy (EDS) system.

scholarly journals Influence of Phenolic Resin Surface Treatment Agent on Interfacial Adhesion of Carbon Fibre Reinforced Epoxy Resin Composites

2007 ◽  
Vol 16 (6) ◽  
pp. 096369350701600 ◽  
Author(s):  
Chao Wang ◽  
Jing Wang ◽  
Yongan Niu
Keyword(s):  
Carbon Fibre ◽  
Surface Treatment ◽  
Epoxy Resin ◽  
Photoelectron Spectroscopy ◽  
Interfacial Adhesion ◽  
Phenolic Resin ◽  
Resin Matrix ◽  
Resin Composites ◽  
Treatment Agent ◽  
Epoxy Resin Composites

To enhance the interfacial adhesion between carbon fibre and epoxy resin matrix, phenolic resin surface treatment agent has been carried out. The influence of phenolic resin treatment agent on interfacial adhesion of carbon fibre reinforced epoxy resin composites were investigated by interlaminar shear strength, atomic force microscopy, X-ray photoelectron spectroscopy and scanning electron microscopy. The results indicated that the interfacial adhesion was improved greatly after carbon fibre treated by phenolic resin surface treatment agent.

The Using Fungi Treatment as Green and Environmentally Process for Surface Modification of Natural Fibres

2014 ◽  
Vol 554 ◽  
pp. 116-122 ◽  
Author(s):  
Seyed Meysam Khoshnava ◽  
Raheleh Rostami ◽  
Mohammad Ismail ◽  
Alireza Valipour
Keyword(s):  
Surface Modification ◽  
Surface Treatment ◽  
Low Cost ◽  
Fibre Surface ◽  
Natural Fibre ◽  
Embodied Energy ◽  
Natural Fibres ◽  
Matrix Interface ◽  
Hydrophobic Polymer ◽  
Fibre Matrix

Although Natural Fibres have various potential and advantages such as lower in weight, embodied energy and toxicity but their drawbacks are provided relentless competition between natural and synthetics fibres. Intrinsically, Natural Fibres are hydrophilic that is leaded to poor resistance to moisture and incompatible to hydrophobic polymer matrix. This incompatibility of natural fibres results in poor fibre/matrix interface which in turn leads to reduce mechanical properties of the composites. This study try to litreature some methods of chemical treatment or surface modification of Natural Fibres for improving this drawback of natural fibres. The objective of this research is fungi treatment as Green Surface Treatment that is indicate to environmental friendlier process. The use of fungi can provide low cost, highly efficient and environmentally friendly alternatives to natural fibre surface treatment.

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