Effects of wool fibre and other additives on the flammability and mechanical performance of polypropylene/kenaf composites

Subasinghe, Aruna; Somashekar, Arcot; Bhattacharyya, Debes

doi:10.1016/j.compositesb.2017.10.034

Cited by 36 publications

(10 citation statements)

References 38 publications

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“…These include the use of solar energy, wind energy, and fuel cells as alternative materials reduce the impact on the environment [3,4]. Other materials, which are commonly employed in renewable industries nowadays are polymer composites, given that they are recyclable, have high mechanical properties, possess electrical conductivity, and have excellent thermal properties [5,6,7]. As with fuel cell applications, these polymer composite materials are generally fabricated as bipolar plate components, which are applied in polymer electrolyte membrane fuel cells (PEMFCs) [8,9,10].…”

Section: Introductionmentioning

confidence: 99%

Electrical Conductivity Performance of Predicted Modified Fibre Contact Model for Multi-Filler Polymer Composite

et al. 2019

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Polymer composites have been extensively fabricated given that they are well-fitted for a variety of applications, especially concerning their mechanical properties. However, inadequate outcomes, mainly regarding their electrical performance, have limited their significant potential. Hence, this study proposed the use of multiple fillers, with different geometries, in order to improve the electrical conductivity of a polymer composite. The fabricated composite was mixed, using the ball milling method, before being compressed by a hot press machine at 3 MPa for 10 min. The composite plate was then measured for both its in-plane and through-plane conductivities, which were 3.3 S/cm, and 0.79 S/cm, respectively. Furthermore, the experimental data were then verified using a predicted electrical conductivity model, known as a modified fibre contact model, which considered the manufacturing process, including the shear rate and flow rate. The study indicated that the predicted model had a significant trend and value, compared to the experimental model (0.65 S/cm for sample S1). The resultant fabricated composite materials were found to possess an excellent network formation, and good electrical conductivity for bipolar plate application, when applying compression pressure of 3 MPa for 10 min.

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Section: Introductionmentioning

confidence: 99%

Electrical Conductivity Performance of Predicted Modified Fibre Contact Model for Multi-Filler Polymer Composite

et al. 2019

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“…A large amount of infusible APP and ME particles distributed in the resin matrix formed a heterogeneous morphology, and therefore the resultant incompatibility between the flame retardants and resin produced interfacial defects inevitably causing a degree of interfacial stress concentration 15 . It can also be seen that the addition of APP/ME increased the flexural modulus by acting as particle reinforcement 17 Reductions in tensile strength, notched Izod impact strength and flexural performance can be observed with the addition of BA‐a. Compared with the POM/IFR composite, the tensile strength, notched Izod impact strength, flexural strength, and flexural modulus of POM/IFR/2BA‐a decreased by 10.6%, 33.3%, 25.6%, and 20.0%, respectively, which could be attributed to the malfunction of BA‐a on the interface adhesion of flame retardants with the matrix.…”

Section: Resultsmentioning

confidence: 97%

“…It can be speculated that the introduction of 4 wt% BA‐a‐Si enhanced the refractory properties of the composite, moreover, formed densifying puffy coking charred layer, which helped to delay or eliminate the fine crack initiation by reducing pHRR and noticeably increasing the TTI to 82 seconds (Table 3). 17 …”

Section: Resultsmentioning

confidence: 99%

Flame retardant effect and mechanism of benzoxazine as synergist in intumescent flame‐retardant polyoxymethylene

Feng

Kang

et al. 2020

Polymers for Advanced Techs

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Benzoxazine monomers of traditional bisphenol-A benzoxazine (BA-a) and bisphenol-A benzoxazine containing trialkoxysilane (BA-a-Si) were synthesized and incorporated into polyoxymethylene/ammonium polyphosphate/melamine (POM/APP/ME) to improve the fire retardancy of POM. The flame retardation, thermal, and mechanical properties of POM composites were evaluated by cone calorimeter, limiting oxygen index (LOI), and the Underwriters Laboratories-94 (UL-94) vertical burning tests, as well as thermogravimetric analysis and mechanical tests. Addition of BA-a-Si (2 wt%) into POM could simultaneously improve its flame retardancy (UL-94 vertical burning rating to V-0 rating and LOI value reached 52.1%) and notched impact strength

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“…Evaluation of the effect of hybriding on the thermomechanical and mechanical properties of calcite/SGF/PP hybrid composites was studied by Senturk et al; results revealed that the presence of calcite and SGF in the composite enhanced the bending and tensile properties, but reduced the tensile elongation and impact strength. Aruna Subasinghe et al studied the effect of wool fiber and other additives on the flammability and mechanical performance of PP/kenaf composites; the study revealed that the forced combustion of composite substantially decreased and tensile modulus increased. Strapasson et al investigated tensile and impact behavior of PP/low‐density polyethylene blends; it was revealed that blending PP with low‐density polyethylene significantly reduced the mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

“…From the literature, 6,7,10,11,[15][16][17][18][19][20][21][22][23][24][25][26] it is found that researchers have tried to improve the mechanical properties of PP by reinforcing with SGF and SCF and also by adding natural and nanofibers, natural, particulate, and nanofillers as hybrid reinforcement and filler materials. The effect of fiber weight percent, fiber-matrix interfacial strength, and fiber length on the mechanical properties are studied.…”

Section: Introductionmentioning

confidence: 99%

Significance of the type of reinforcement on the physicomechanical behavior of short glass fiber and short carbon fiber‐reinforced polypropylene composites

Rudrappa

Srinivasachar²

2020

Engineering Reports

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In the present work, short glass fiber (SGF) and short carbon fiber (SCF)‐reinforced polypropylene (PP) composites are fabricated using twin‐screw extrusion and injection molding techniques. The SGF and SCF are reinforced as a single and hybrid reinforcement into the PP matrix with the same weight percentage (wt%) and the obtained composites are characterized for physicomechanical properties. It is observed that the tensile and flexural strength and modulus of elasticity of PP are improved by increasing the weight percent of reinforcement in the composite. The highest value is observed for composite with 30 wt% of SCF reinforcement; hybrid composite with 10 and 20 wt% of the mixture of SGF and SCF proves to outperform the other composites with the same weight percent of SGF and SCF added individually. The notched Izod impact strength of SGF + PP composite at 30 wt% is found to be the highest amongst all. Furthermore, the increased presence of SCF improved the tensile and flexural properties; however, it was not able to improve the impact strength significantly.

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Effects of wool fibre and other additives on the flammability and mechanical performance of polypropylene/kenaf composites

Cited by 36 publications

References 38 publications

Electrical Conductivity Performance of Predicted Modified Fibre Contact Model for Multi-Filler Polymer Composite

Electrical Conductivity Performance of Predicted Modified Fibre Contact Model for Multi-Filler Polymer Composite

Flame retardant effect and mechanism of benzoxazine as synergist in intumescent flame‐retardant polyoxymethylene

Significance of the type of reinforcement on the physicomechanical behavior of short glass fiber and short carbon fiber‐reinforced polypropylene composites

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