Characterization and morphological properties of glass fiber reinforced epoxy composites fabricated under varying degrees of hand lay-up techniques

Adekomaya, Oludaisi; Adediran, A. A.; Adama, KK

doi:10.4314/jasem.v22i1.20

Cited by 17 publications

(16 citation statements)

References 18 publications

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“…Thus, tensile, impact and hardness strength were found to be substantially increasing with the addition of GFD in LLDPE. As a result, the mechanical properties attained for composites produced with our streamlined method at room temperature are in good agreement with those previously published in the literature [22,24,25,45].…”

Section: Mechanical Characterizationsupporting

confidence: 90%

“…An E-glass fiber epoxy resin formation was prepared by Adekomaya et al using hand layup technique. They investigated and concluded a better dimensional stability for these composites through morphological and XRD analysis [24]. E-glass and coconut fibre loaded epoxy and polyester combinations were efficaciously framed by Hemanth et al They witnessed an improved mechanical properties with tensile strength of 40.53 MPa, impact strength of 5.75 J, flexural strength of 177.37 MPa and Hardness value of 68.2 Hrm considering E-glass fiber epoxy composites [25].…”

Section: Introductionmentioning

confidence: 99%

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Effect of industrially processed glass fibre dust on mechanical, thermal and morphological properties mixed with LLDPE for rotational molding process

Gupta

Ramkumar

2021

Sādhanā

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Rotational molding is an idiosyncratic plastic manufacturing technique that provides a comparatively stress free end product. The base resin extensively preferred for rotomolding is Linear Low Density Polyethylene (LLDPE). However, when compared to common engineering materials, pure LLDPE embarks poor mechanical properties targeting few critical applications. Usage of glass fibres as an additive is well known to the researchers in such criteria. But its industrially processed dust is yet to be investigated for rotational molding process. Thus, in the current context, rotationally molded LLDPE based products are investigated wherein glass fibres dust (GFD) are embedded into thermoplastic resin to examine the variation in strength and stiffness of end product. According to preliminary processing tests conducted, approximately 20% and below of LLPDE/GFD composites was observed to provide better fluidity as a prerequisite for rotomoldability. Hence, an experimental study was performed to benchmark the presence of 10%, 15%, 20% and 25% GFD when mixed with LLDPE for rotomolded product. When treating LLDPE/GFD at distinct weight ratio, the rate of heat transfer was also evaluated using the mold, oven, and internal air temperature. The composite's crystallinity was investigated using DSC analysis to assess the concentration of GFD incorporated in LLDPE. Scanning electron microscopy was furthermore utilized to display the underlying mechanisms of LLDPE/GFD ratios. The present work successfully signifies an increase in an overall performance due to the impact of GFD over unreinforced LLDPE. Therefore, it is hypothesized that till 20% GFD addition in the LLDPE matrix is expected to lead a rise in mechanical properties, thus potentially approaching towards retaining the requisite degree of design freedom of rotational molding process.

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Section: Mechanical Characterizationsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Effect of industrially processed glass fibre dust on mechanical, thermal and morphological properties mixed with LLDPE for rotational molding process

Gupta

Ramkumar

2021

Sādhanā

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“…This typical behavior was found less critical with G‐0 composites, which may be due to the lower modulus and higher elongation at break of glass fibers in comparison with basalt fiber in the composites as shown in Figure 12B. Adekomaya et al, [ 59 ] reported that the development of cavities with glass fiber reinforced at 0° orientated epoxy composite indicating poor fiber matrix adhesion. Figure 12C depicts that the glass fiber is well surrounded by vinyl ester matrix and fracture is seen in the matrix rather than simply pull out of fiber.…”

Section: Resultsmentioning

confidence: 92%

Studies on mechanical and fracture properties of basalt/E‐glass fiber reinforced vinyl ester hybrid composites

Jeevi

Ranganathan

2022

Polymer Composites

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In this study, a comparative analysis of basalt, E‐glass and hybrid fiber reinforced vinyl ester composites was carried out. Composites were fabricated using vacuum infusion process with 0°/90° and ±45° as fiber orientation angles. The influence of volume fraction on mechanical behaviors and surface morphology of impact fractured composites were analyzed. The glass and basalt fibers oriented at 0° have shown higher load bearing capability, whereas the fibers oriented at 45° angle have shown higher plastic deformation. Hybridized composite having silane treated glass fibers has shown enhanced mechanical properties including tensile strength, bending strength, toughness, and elongation at break due to good bonding between fibers and polymer matrix. The tough and flexible interface between fiber and matrix dissipates more energy through stress transfer from matrix to fiber, allowing increased resistance to shearing. The impact test of BGS‐0.2 hybrid composite showed 103% and 108% of strength improvement compared to basalt (B‐0) and glass fiber (G‐0) reinforced laminates, respectively. However, the fiber orientation at 45 degree showed reduced the strength and modulus with high elongation. The fractography micrographs of hybrid composites have shown the effectiveness of basalt and glass fiber orientation in the composites and bonding between fiber and matrix indicating flexible interphase between the fiber and matrix during impact loading. The composites added with silane have shown marginal increase in water uptake due to presence of polar functional groups in the coupling agent.

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“…The intensity of neat epoxy resin and alkali treated fiber composite (20% loading) is higher than untreated fiber composites with different fiber loadings (5%, 10%, 15%, and 20%). [ 37 ] This is because of the elimination of amorphous parts (hemicellulose & lignin) during alkali treatment. [ 38 ] The crystallinity index of neat epoxy resin is 80.04%.…”

Section: Resultsmentioning

confidence: 99%

Synergistic effect of alkali and silane treatment on mechanical, flammability, and thermal degradation of hemp fiber/epoxy composite

Soni

Sinha

2022

Polymer Composites

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Currently, natural fiber composites are used in many applications (industrial, automotive, and construction) where fire resistance is a critical factor. The main objective of this research work is to investigate the thermal degradation and fire performance of raw and treated fiber composites developed using hand layup with different fiber loadings of 5, 10, 15, and 20 wt%. Alkali treatment (5%, wt/vol) and silane treatment (5%, wt/vol) were used to improve the thermal stability and compatibility of hemp fiber with polymer matrix. The developed composites were characterized for thermal (thermogravimetric analysis), chemical (Fourier transform spectroscopy), morphological (scanning electron microscopy and X-ray diffraction), and mechanical behavior. Further, the flammability behavior of the developed composites was investigated using vertical cum horizontal flammability test apparatus and limiting oxygen index (LOI) tester. The results of mechanical characterization reveal that alkali treated fiber composites (20% loading) have the highest tensile strength (24.4 MPa) and flexural strength (46.1 MPa). Composite reinforced with silane-treated fibers have shown excellent flame retardancy with the lowest horizontal burning rate (16.11 mm/min) and higher LOI (23.5%). Scanning electron microscopy confirms the better fiber-matrix compatibility of silane-treated fiber with epoxy.

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Characterization and morphological properties of glass fiber reinforced epoxy composites fabricated under varying degrees of hand lay-up techniques

Cited by 17 publications

References 18 publications

Effect of industrially processed glass fibre dust on mechanical, thermal and morphological properties mixed with LLDPE for rotational molding process

Effect of industrially processed glass fibre dust on mechanical, thermal and morphological properties mixed with LLDPE for rotational molding process

Studies on mechanical and fracture properties of basalt/E‐glass fiber reinforced vinyl ester hybrid composites

Synergistic effect of alkali and silane treatment on mechanical, flammability, and thermal degradation of hemp fiber/epoxy composite

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