Ultrasonic welding of all‐polypropylene composites

Kiss, Zoltán; Temesi, Tamás; Bitay, Enikő; Bárány, Tamás; Czigány, Tibor

doi:10.1002/app.48799

Cited by 18 publications

(11 citation statements)

References 37 publications

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“…1 , 2 Although polymers are broadly convenient, their high stability implies in their non-degradable character. 3 , 4 To promote more sustainable and recycled materials, the literature reports using cellulosic fibers in a polymeric matrix, resulting in greener composites materials. 5 , 6 Polymer composites reinforced with natural fibers are highly attractive due to their lightweight, degradability, high strength, and low friction coefficient.…”

Section: Introductionmentioning

confidence: 99%

Revaluation of Australian palm residues in polypropylene composites: Statistical influence of fiber treatment

Zanini

Barbosa

Souza

et al. 2020

Journal of Composite Materials

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Australian palm residues are generated by palm heart industry in large quantities and are considered an underused material with a composition rich in lignocellulosic structures. This residue is generally utilized as briquettes for energy or sheep feed; however, few works investigate this residue as composite fillers. This work aimed to revalue Australian palm residues (PR) by preparing polypropylene composites through melt mixing, using different fiber contents (0, 5, 10, 20, and 30 wt%), and evaluate the statistical influence of fibers (residues) alkali treatment (MPR) in composites mechanical properties. PR and MPR were evaluated by FTIR, XRD, SEM, TGA, and composites were assessed using thermal and mechanical analysis, in which ANOVA statistical analysis was applied. The residues addition increased the mechanical properties and their treatment enhanced the stiffness of the composites compared to pristine PP. However, ANOVA demonstrated that at low residues contents, surface treatment does not increase fiber-matrix interactions effectively, then tensile properties were statistically similar to PP. Considering tensile properties, 20% MPR showed statistically distinct properties, with significative enhancements; no filler contents dependence was verified. Flexural properties were more sensitive to residue loading, and composites with 30% PR and MPR presented superior mechanical performance. This difference is associated with a higher sensitivity of tensile stress towards fiber-matrix interactions, which was improved with fiber treatment. Also, the residues content and treatment influenced the composites' thermal stability, with better results for PP-MPR. Results indicate that palm residue is an excellent filler for improving composites' thermal and mechanical properties, with a greener character.

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Section: Introductionmentioning

confidence: 99%

Revaluation of Australian palm residues in polypropylene composites: Statistical influence of fiber treatment

Zanini

Barbosa

Souza

et al. 2020

Journal of Composite Materials

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“…[19][20][21][22][23] Glass fiber (GF) is one of the most commonly used reinforcements in the composites due to its low cost and relatively good mechanical properties. 24,25 Nevertheless, thermoplastic composites have few drawbacks, for instance, poor impact resistance 26 and weak ductility properties by comparison with metal alloys. 27,28 The need to overcome these drawbacks has resulted in hybrid composites that are known as Fiber Metal Laminates (FMLs).…”

Section: Introductionmentioning

confidence: 99%

Bilayer AA7075-thermoplastic composite structures manufactured by hot pressing: Effect of glass fiber amount of polypropylene composite on mechanical properties

Öztoprak

2023

Journal of Thermoplastic Composite Materials

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This article presents a research into the development of novel Hybrid Laminates (HLs) prepared with the use of hot-pressing method. Two types of HLs are fabricated through the composite coating with different fiber amounts (40 and 50% wt.) of only one surface of 7075-O Al alloy substrate. Effects of the fiber contents of the thermoplastic composite in the hybrid structures are investigated with regards to the tensile and flexural properties. The influence of bending load applied from different surfaces on flexural responses is also evaluated. The tensile test results indicate that the increased fiber ratio slightly affects the failure load of composite layer in the HLs. On the other hand, the flexural strength decreases with the increasing fiber amount in the HLs whether the three-point bending is performed on the Al surface or the composite layer. Scanning electron microscopy (SEM) is used to study the fracture surfaces after the mechanical characterization. From the SEM observations, it has been realized that fiber/matrix debonding is the key failure mechanism during the tensile tests. The failure mode of both HLs is delamination in the PP composite at the tensile side when the bending applied from the Al layer.

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“…In this regard, the interfacial adhesion between the layers of reinforcing fibers and the matrix could significantly determine SPC’s performance. 10,11 In SPCs, the polymer’s intrinsic properties, the fiber-matrix ratio, the lamina sequence and orientation, the consolidation pressure, the temperature, and the duration play an essential role in the interlaminar properties, and therefore, in the final products’ thermal and mechanical properties. 6,12 Interlaminar toughening approaches including incorporating sub-phases into the interface between the reinforcement and the matrix can solve this issue.…”

Section: Introductionmentioning

confidence: 99%

Melt-blown fiber mat interleaving enhances the performance of single-polypropylene composites

Kara

Molnár

2022

Journal of Reinforced Plastics and Composites

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In this study, we demonstrate that integrating melt-blown fiber mat interleaves into single-polypropylene composites enhances several mechanical properties and influences the morphology positively. Polypropylene veils were generated by melt blowing. We then created single-polypropylene composites by film-stacking in which we applied a film as a matrix, a woven fabric as primary reinforcement, and the melt-blown fiber mats as interleaves. The tensile modulus was improved in the range of 20%–46%, and the interlaminar shear strength and the perforation energy at impact were increased by 17% and 14%, respectively, due to interleaving. Master curves were constructed from dynamic mechanical analysis frequency sweep tests based on the time–temperature superposition principle. The storage modulus significantly increased while the tanδ decreased. The interleaving considerably reduced the delamination by creating a net-like structure leading to superior interfacial adhesion. The interleaving demonstrated in this study can promote single-polymer composites’ utilization in various engineering applications where high toughness and impact resistance are required.

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Ultrasonic welding of all‐polypropylene composites

Cited by 18 publications

References 37 publications

Revaluation of Australian palm residues in polypropylene composites: Statistical influence of fiber treatment

Revaluation of Australian palm residues in polypropylene composites: Statistical influence of fiber treatment

Bilayer AA7075-thermoplastic composite structures manufactured by hot pressing: Effect of glass fiber amount of polypropylene composite on mechanical properties

Melt-blown fiber mat interleaving enhances the performance of single-polypropylene composites

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