Application of the microbond technique: Characterization of carbon fiber‐epoxy interfaces

Biro, David A.; McLean, P.D.; Deslandes, Yves

doi:10.1002/pen.760311704

Cited by 36 publications

(19 citation statements)

References 23 publications

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“…The combination of adding a coupling agent and removing the epoxy sizing yielded the highest IFSS, where the effects of adding the coupling agent were more significant than removing the sizing agent. The addition of the coupling agent brought the IFSS values for the carbon fibre/polypropylene system in line with values reported in the literature for VCF epoxy [26,38,39]. The XPS analysis of the surface composition indicated an increase in nitrogen at the surface of the desized fibres.…”

Section: The Effect Of Coupling Agentsupporting

confidence: 85%

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The usability of recycled carbon fibres in short fibre thermoplastics: interfacial properties

et al. 2016

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The objective of this study was to investigate the feasibility of combining discontinuous recycled carbon fibres with polypropylene, to produce a low-cost, high specific stiffness material for high-volume applications. The inherent low affinity of carbon fibre and polypropylene motivated a detailed study of the surface characteristics of carbon fibre and interfacial behaviour between the two materials, using the microbond test. The effects of removing the sizing from the fibres, as well as introducing a maleic anhydride-grafted polypropylene coupling agent, were extensively investigated. Polypropylene was found to degrade when prepared under atmospheric conditions; therefore, it was necessary to form droplets under nitrogen. Removal of the sizing from the fibre using pyrolysis and solvolysis techniques altered the surface morphology of the fibre and increased the interfacial shear strength (IFSS) by 4 and 33 %, respectively. A more significant improvement in the fibre-matrix adhesion was achieved by adding a maleic anhydride coupling agent at 2 wt%, which increased the IFSS by 320 %.

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Section: The Effect Of Coupling Agentsupporting

confidence: 85%

“…Samples were produced using the virgin fibre (with epoxy sizing) only. It was found that the VCF.EP benchmark had an apparent IFSS of 45.8 ± 4.6 MPa, which is within the range of values reported in the literature for similar systems [26,38,39]. A summary of the recorded IFSS data is given in Table 2.…”

Section: Resultsmentioning

confidence: 48%

The usability of recycled carbon fibres in short fibre thermoplastics: interfacial properties

et al. 2016

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“…The reinforcements, matrices, the structure of the curing agents, curing mechanism, conditions and interfacial adhesion in the composites govern overall mechanical performance and durability of the materials. 23,24 G-EBCF-THPA possesses ß23% and ß 13% more tensile strength than those of G-EBCF-TCPA and G-EBCF-TBPA, respectively. G-EBCF-TBPA possesses ß23% and ß 21% more flexural strength than G-EBCF-THPA and G-EBCF-TCPA, respectively.…”

Section: Mechanical and Electrical Propertiesmentioning

confidence: 96%

Synthesis of Bisphthalamic Acids for the Preparation of Glass‐Reinforced Composites of Multifunctional Epoxy Resin of Bisphenol‐C and Their Physicochemical Properties

Patel

Parsania

2016

Adv Polym Technol

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Bisphthalamic acids of tetrahydrophthalic anhydride (THPA), tetrachlorophthalic anhydride (TCPA), tetrabromophthalic anhydride (TBPA), and 4,4′‐diamino diphenylsulfone (DDS), 4,4′‐diaminodiphenylether (DDE), and 4,4′‐diaminodiphenyl methane (DDM) were synthesized and used as hardeners for multifunctional epoxy resin of bisphenol‐C(EBCF). Glass‐reinforced composites (G‐EBCF‐THPA, G‐EBCF‐TCPA, G‐EBCF‐TBPA, G‐EBCF‐THPADDS, G‐EBCF‐TCPADDS, G‐EBCF‐TCPADDE, and G‐EBCF‐TCPADDM) were fabricated by hand layup followed by compression molding technique at 140/170°C under 2 bar pressure for 6/15 h. Glass composites possess good tensile strength (99–168 MPa), flexural strength (131—270 MPa), flexural modulus (5419–7987 MPa), impact strength (19–36 kg m−2), Barcol hardness (31–44), electric strength (7.2–8.9 kV mm−1), volume resistivity (1 × 1012 to 1.9 × 1012 ohm cm), and 13–15.8% water absorption indicated their usefulness for low load bearing housing, electrical, and marine applications.

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“…The performance and durability of composites rely on strength and stiffness of the fibers, the strength and stability of matrix, and interfacial bond strength between fiber and matrix, fillers, compatibilizers and modifiers, fiber content, temperature, voids, dimensions, matrix material composition, fiber orientation, [36][37][38] etc. For engineering design, tensile properties are most widely used for quality characteristics.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Synthesis, fabrication, mechanical, electrical, and moisture absorption study of epoxy polyurethane–jute and epoxy polyurethane–jute–rice/wheat husk composites

Mavani

Mehta

Parsania

2007

J of Applied Polymer Sci

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Bisphenol-C-epoxy-toluene diisocyanate polyurethane (PEBCT) has been synthesized and used for the fabrication of jute, jute-rice husk (JRH), and jute-wheat husk (JWH) composites. The composites have been fabricated by hand lay-up technique under a hydraulic pressure of 30.4 MPa at 1358C for 2.5 h. PEBCT-J, PEBCT-JRH, and PEBCT-JWH possess respectively, tensile strength of 37.4, 9.5, and 14.7 MPa, and flexural strength of 39.6, 12.9, and 21.3 MPa, electric strength of 1.3, 1.8, and 1.9 kV/mm and volume resistivity of 1.40 Â 10 13 , 1.84 Â 10 13 , and 1.91 Â 10 13 ohm cm. Tensile strength and flexural strength have decreased, while electric strength and volume resistivity are improved upon hybridization. PEBCT-JWH has better interfacial bond strength and stiffness as compared to PEBCT-JRH. Moisture uptake behavior of PEBCT-J in water, 10% HCl and 10% NaCl at room temperature is quite different. Equilibrium moisture content of PEBCT-J in 10% NaCl (5.5%) is almost half of those in water (11.3%) and 10% HCl (13.6%) environments. Equilibrium time for saline environment is also comparatively low. Equilibrium moisture uptake in boiling water has increased 1.84 times, while equilibrium time has decreased 15.3 times. The composites may be useful for low load bearing in construction industries and for marine applications.

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Application of the microbond technique: Characterization of carbon fiber‐epoxy interfaces

Cited by 36 publications

References 23 publications

The usability of recycled carbon fibres in short fibre thermoplastics: interfacial properties

The usability of recycled carbon fibres in short fibre thermoplastics: interfacial properties

Synthesis of Bisphthalamic Acids for the Preparation of Glass‐Reinforced Composites of Multifunctional Epoxy Resin of Bisphenol‐C and Their Physicochemical Properties

Synthesis, fabrication, mechanical, electrical, and moisture absorption study of epoxy polyurethane–jute and epoxy polyurethane–jute–rice/wheat husk composites

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