Mechanical and morphological properties of recycled high‐density polyethylene, filled with calcium carbonate and fly ash

Atikler, U.; Başalp, Dildare; Tıhmınlıoğlu, Funda

doi:10.1002/app.24772

Cited by 64 publications

(84 citation statements)

References 14 publications

(18 reference statements)

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“…In addition, commercial products viz, floor tiles, sinks, automotive parts, textile bobbins, flame-resistant electronic products etc., contain fly ash [7]. The granulometry of fly ash filler and filler blends are reported to be attractive as filler material in polymer composites [8][9][10][11]. Such fly ash filled polymer composites posses' attractive mechanical, thermal, electrical properties, better dimensional stability and are cost effective.…”

Section: Introductionmentioning

confidence: 99%

Effective thermal conductivity and coefficient of linear thermal expansion of high-density polyethylene — fly ash composites

2011

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As the disposal of fly ash (FA) poses a serious problem in terms of land use and potential environmental pollution, there exists a global interest for its utilization. Utilization of fly ash as filler material in polymer composites is considered important from both economic and commercial point of view. In this communication, the effective thermal conductivity and coefficient of thermal expansion (CTE) of composites synthesized with fly ash filler embedded in high-density polyethylene (HDPE) matrix is investigated. Incorporation of fly ash in HDPE enhances both the thermal stability and the effective thermal conductivity of the composites. CTE, however, significantly decreases as the FA content increases in HDPE. Effective thermal conductivity for HDPE containing 70-volume fraction (%) fly ash becomes almost twice than that for unfilled HDPE. Results on both the effective thermal conductivity and CTE of HDPE/FA composites have been discussed in light of various theoretical models. Our analysis indicates formation of conductive channels of FA particulates in HDPE, which causes rapid enhancement in the effective thermal conductivity of the HDPE/FA composites. We also confirm the importance of the role of the interphase volume and the strength of the polymer -filler interactions to successfully predict the CTE of HDPE/FA composites.

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Section: Introductionmentioning

confidence: 99%

Effective thermal conductivity and coefficient of linear thermal expansion of high-density polyethylene — fly ash composites

2011

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“…Atikler et al [23] compared the effect of FA and CC fillers, with and without silane surface treatment, on the mechanical properties of HDPE such as tensile strength, Young's modulus and elongation at break. The result indicates improvement in these properties for both fillers and thus they concluded that FA can replace CC as filler in HDPE composite.…”

Section: Introductionmentioning

confidence: 99%

Characterization of LDPE Reinforced with Calcium Carbonate—Fly Ash Hybrid Filler

Adeosun¹,

Usman²,

Akpan³

et al. 2014

JMMCE

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The synergetic effect of calcium carbonate (CC)-fly ash (FA) hybrid filler particles on the mechanical and physical properties of low density polyethylene (LDPE) has been investigated. Low density polyethylene is filled with varying weight percentages of FA and CC using melt casting. Composites are characterized for mechanical, thermal, microstructural and physical properties. Results show that the flexural strength increases with increases in FA content of the hybrid filler. It is evident from the study that to achieve optimum density a certain combination of both fillers need to be used. The optimum combination of CC and FA for a higher density (1.78 g/cm 3 ) is found to be at 20 wt% FA and 30 wt% CC. An increase of 7.27% in micro-hardness over virgin polyethylene is obtained in composites with 10 wt% FA and 40 wt% CC. The presence of higher amount of CC is seen to be detrimental to the crystallinity of composites. X-ray, FTIR and DSC results show that composite with 45 wt% CC and 5 wt% FA exhibits a typical triclinic polyethylene structure indicating that the composite is amorphous in nature. There was the synergy between FA and CC fillers on flexural strength and crystallinity of composite. However, the fillers show the antagonistic effect on energy at peak and micro-hardness.

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“…Trifunctional alkoxysilanes are widely available and can react with surface hydroxyl groups on inorganic fillers. Surface analysis of boron nitride powders by FTIR 32 has confirmed the presence of hydroxyl and acidic oxygenated sites.…”

Section: Boron Filler Functionalizationmentioning

confidence: 60%

“…Untreated boron nitride particles show an increase over neat HDPE but little effect on tensile strength with increasing volume percent of filler, an expected result when there are weak interactions between the filler and the matrix. 38 Surface treatment of the particles show an increase in tensile strength compared to the particles with no treatments. In particular, boron nitrides treated with silanes C, D, E, and F have significantly higher tensile strengths than the untreated control.…”

Section: Mechanical Properties Of Compositesmentioning

confidence: 97%

Polyethylene/boron nitride composites for space radiation shielding

Harrison

Weaver

Bertelsen

et al. 2008

J of Applied Polymer Sci

191

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Composites made with boron might be absorbers of low energy neutrons, and could be used for structural materials for spacecraft. Polyethylene/boron nitride composites were fabricated using conventional polymer processing techniques, and were evaluated for mechanical and radiation shielding properties. The boron nitride powder surfaces were also functionalized to improve interfacial adhesion. Addition of neat boron nitride to an injection molding grade HDPE increased the tensile modulus from 588 to 735 MPa with 15 vol % filler. The bonding of a trifunctional alkoxysilane to the powder surface prior to processing increases the composite modulus to 856 MPa at the same loading. Scanning electron microscopy of fracture surfaces verified that the silane-treated powders had improved adhesion at the filler/polymer interface. Radiation shielding measurements of a 2 wt % boron nitride composite were improved over those of the neat polyethylene.

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Mechanical and morphological properties of recycled high‐density polyethylene, filled with calcium carbonate and fly ash

Cited by 64 publications

References 14 publications

Effective thermal conductivity and coefficient of linear thermal expansion of high-density polyethylene — fly ash composites

Effective thermal conductivity and coefficient of linear thermal expansion of high-density polyethylene — fly ash composites

Characterization of LDPE Reinforced with Calcium Carbonate—Fly Ash Hybrid Filler

Polyethylene/boron nitride composites for space radiation shielding

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