Effect of fiber surface texture on the mechanical properties of glass fiber reinforced epoxy composite

Gao, Xing; Gillespie, John W.; Jensen, Robert E.; Li, W.; Haque, Bazle Z.; McKnight, Steven H.

doi:10.1016/j.compositesa.2015.03.023

Cited by 31 publications

(15 citation statements)

References 20 publications

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“…Indeed, extensive flax fibre debonding can be seen in As discussed previously, oxygen plasma treatment is able to perform a surface ablation of the flax fibres and to enhance their surface roughness (Figure 1). Different studies in literature have analysed the influence of frictional forces on the interfacial adhesion between the synthetic fibres and the polymeric matrices (Beggs et al, 2015;Fu et al, 2019;Gao et al, 2015;Thomason, Yang, and Minty, 2018). These studies showed that the mechanical interlocking action between the fibres surface and the polymer matrix may lead to an increase in the interfacial strength.…”

Section: -Fractographic Analysismentioning

confidence: 99%

Effects of oxygen and tetravinylsilane plasma treatments on mechanical and interfacial properties of flax yarns in thermoset matrix composites

et al. 2019

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This work is focused on the assessment of the effect of oxygen and polymer plasma tetravinylsilane (pp-TVS) treatments on the adhesion of flax yarns with epoxy and vinylester thermoset matrices. These low temperature plasma processes have been selected as more environmentally friendly alternatives to traditional chemical treatments. Tensile tests performed on single flax yarns revealed a reduction in their mechanical properties after plasma treatments. In particular, a tensile strength reduction of 36.4% was detected after the oxygen plasma treatment using 100W of plasma power. The morphological analysis highlighted that this result is mainly ascribed to the ablation action produced by oxygen plasma process. In the case of pp-TVS, both morphological and Fourier transform infrared spectroscopy analysis (FT-IR) confirmed the presence of a homogeneous tetravinylsilane film on the surface of the yarns. The interfacial adhesion of untreated, oxygen plasma treated, and plasma-polymer coated flax yarns has been determined by single fibre fragmentation test (SFFT). The plasma polymer deposition can produce a significant improvement of the adhesion property of flax yarns with both epoxy and vinylester matrices. An increase of the interfacial shear strength (IFSS) values of 114% and 71% was found after the TVS film deposition in epoxy and vinylester composites, respectively. These results were confirmed by high-resolution micro-CT, photoelasticity analysis and FE-SEM observations.

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Section: -Fractographic Analysismentioning

confidence: 99%

Effects of oxygen and tetravinylsilane plasma treatments on mechanical and interfacial properties of flax yarns in thermoset matrix composites

et al. 2019

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“…Generally glass, carbon and aramid are used as fiber material. Mechanical properties of fiber reinforced composites in these studies are investigated experimentally, numerically and analytically [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. There are also some studies on basalt fiber and hydrojel composites [19,20] Frangopol et al investigated the reliability of a composite laminate plate by using Tsai-Wu failure criterion.…”

Section: Introductionmentioning

confidence: 99%

Comparison of Mechanical Properties of Unidirectional and Woven Carbon, Glass and Aramid Fiber Reinforced Epoxy Composites

2017

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In this study, mechanical behavior of epoxy composite reinforced by unidirectional and woven fiber is investigated experimentally. In the preparation of composite samples woven shaped glass, aramid and carbon fibers and unidirectional shaped glass and carbon fibers were used. Tension, compression and shear tests were carried out to determine mechanical properties of composites. It is seen from the test results, that unidirectional carbon fiber shows better performance than the glass fiber. Mechanical properties of 0• -oriented unidirectional fiber are better than those of 90• -oriented unidirectional fiber. Mechanical properties of aramid-fiber-reinforced composite are higher than those of glass and carbon fiber, when the woven types of fibers are considered.

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“…Their high mechanical strength, electrical/chemical resistance, and dimensional stability in various harsh environments, including biological systems, make them extensively adapted in a growing number of applications, such as automotive, naval, aeronautical, and biomedical components. Regardless of fibre size in the fibre reinforced composites, surface morphology at the micro-and nanoscale and chemical reactivity along the fibre-matrix interface have a significant effect on bulk properties of composites 5–8 . Accordingly, a strong interfacial bonding between fibre and matrix is considered as an essential property of FRCs to effectively transfer the applied load to the fibres through the fibre-matrix interface and thereby experiencing similar stress on the fibre and the matrix 9,10 .…”

Section: Introductionmentioning

confidence: 99%

“…As a functional interlayer, silane coupling agent (SCA) coating improves compatibility between organic and inorganic materials resulting an improvement in strength and toughness 11,12 . Incorporation of silica nanoparticles in the coating (size) on the glass fibres modified the fibre surface texture at the microscale and yielded significantly increased strength and energy absorption level in a fibre-epoxy composite system 8 . Recently the effect of intermediate coating thickness on the interfacial shear strength (IFSS) has been reported by using electrophoretic carbon nanotubes (CNTs) deposition method on the S-Glass fibre 7,13 .…”

Section: Introductionmentioning

confidence: 99%

Selective Atomic-Level Etching on Short S-Glass Fibres to Control Interfacial Properties for Restorative Dental Composites

Cho

Wang

Raju

et al. 2019

Sci Rep

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Interfacial bonding between fibre and matrix is most critical to obtain enhanced mechanical properties of the resulting composites. Here we present a new surface tailoring method of selective wet etching and organosilicon monomers (3-(Trimethoxysilyl) propyl methacrylate, TMSPMA) deposition process on the short S-Glass fibre as a reinforcing material, resulting in increased mechanical retention and strong chemical bonding between glass fibres and polymer resin (a mixture of triethylene glycol dimethacrylate (TEGDMA) and urethane dimethacrylate (UDMA) monomers). The effect of surface modification on fibre matrix interfacial strength was investigated through microdroplet tests. An S-Glass fibre treated with piranha solution (a mixture of H 2 O 2 and H 2 SO 4 ) for 24 hours followed by TMSPMA surface silanization shows highest increase up to 39.6% in interfacial shear strength (IFSS), and critical fibre length could be reduced from 916.0 µm to 432.5 µm. We find the optimal surface treatment condition in that the flexural strength of dental composites reinforced by the S-Glass fibres enhanced up to 22.3% compared to the composites without fibre surface treatments. The significant elevation in strength is attributed to changes in the surface roughness of glass fibres at atomic scale, specifically by providing the multiplied spots of the chemical bridge and nano-mechanical interlocking. The findings offer a new strategy for advanced tailoring of short S-Glass fibres to maximise the mechanical properties of biomedical and dental composites.

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Effect of fiber surface texture on the mechanical properties of glass fiber reinforced epoxy composite

Cited by 31 publications

References 20 publications

Effects of oxygen and tetravinylsilane plasma treatments on mechanical and interfacial properties of flax yarns in thermoset matrix composites

Effects of oxygen and tetravinylsilane plasma treatments on mechanical and interfacial properties of flax yarns in thermoset matrix composites

Comparison of Mechanical Properties of Unidirectional and Woven Carbon, Glass and Aramid Fiber Reinforced Epoxy Composites

Selective Atomic-Level Etching on Short S-Glass Fibres to Control Interfacial Properties for Restorative Dental Composites

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