Effect of particle surface treatment and blending method on flexural properties of injection-molded cenosphere/HDPE syntactic foams

Kumar, B. Rajesh; Doddamani, Mrityunjay; Zeltmann, Steven E.; Gupta, Nïkhil; Uzma,; Gurupadu, S.; Sailaja, R. R. N.

doi:10.1007/s10853-015-9697-2

Cited by 72 publications

(33 citation statements)

References 52 publications

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“…The high shear forces generated during blending and injection molding are expected to break apart some of these clusters, though possibly at the expense of higher particle breakage. Particle sphericity is observed to be in the range of 0.6–0.85 from the particle size analysis, compared to 1 for perfectly spherical particles …”

Section: Resultsmentioning

confidence: 97%

“…Improvement in the cenosphere‐HDPE interfacial bonding is desirable because tensile behavior strongly depends on the interfacial characteristics for effectively transferring load from the matrix to the particle. To promote strong interfacial bonding, cenospheres are treated with silane and HDPE is functionalized with 10 vol % DBM in the present study based on the existing literature …”

Section: Resultsmentioning

confidence: 99%

“…The resin is in granular form of 3‐mm diameter and has a mean molecular weight of 97,500 g mol −1 . Cenosphere particle size and shape analysis is conducted using a Sympatec (Pennington, NJ) QICPIC high speed image analysis system . Surface treatment of cenospheres and HDPE functionalization are performed according to the procedures described in earlier publications .…”

Section: Methodsmentioning

confidence: 99%

“…Cenosphere particle size and shape analysis is conducted using a Sympatec (Pennington, NJ) QICPIC high speed image analysis system . Surface treatment of cenospheres and HDPE functionalization are performed according to the procedures described in earlier publications . The cenospheres were analyzed by Fourier transform infrared (FTIR) spectroscopy to confirm the silane coating .…”

Section: Methodsmentioning

confidence: 99%

“…Surface treatment of cenospheres and HDPE functionalization are performed according to the procedures described in earlier publications . The cenospheres were analyzed by Fourier transform infrared (FTIR) spectroscopy to confirm the silane coating . Functionalization of HDPE matrix resin is performed in a Brabender mixer (CMEI, MODEL‐16 CME SPL, Western Company Keltron).…”

Section: Methodsmentioning

confidence: 99%

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Effect of cenosphere surface treatment and blending method on the tensile properties of thermoplastic matrix syntactic foams

Kumar

Zeltmann

Doddamani

et al. 2016

J of Applied Polymer Sci

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The influence of cenosphere surface treatment and blending method on the properties of injection molded high-density polyethylene (HDPE) matrix syntactic foams is investigated. Cenospheres are treated with silane and HDPE is functionalized with dibutyl maleate. Tensile test specimens are cast with 20, 40, and 60 wt % of cenospheres using injection molding. Modulus and strength are found to increase with increasing cenosphere content for composites with treated constituents. Highest modulus and strength were observed for 40 and 60 wt % untreated mechanically mixed and treated brabender mixed cenospheres/HDPE blends, respectively. These values are 37 and 17% higher than those for virgin and functionalized HDPE. Theoretical models are used to assess the effect of particle properties and interfacial bonding on modulus and strength of syntactic foams. Brabender mixing method provided highest ultimate tensile and fracture strengths, which is attributed to the effectiveness of Brabender in breaking particle clusters and generating the higher particle-matrix surface area compared to that by mechanical mixing method. Theoretical trends show clear benefits of improved particle-matrix interfacial bonding in the strength results. V C 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43881.

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 3 more Smart Citations

Effect of cenosphere surface treatment and blending method on the tensile properties of thermoplastic matrix syntactic foams

Kumar

Zeltmann

Doddamani

et al. 2016

J of Applied Polymer Sci

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Effect of cenosphere filler surface treatment on the erosion behavior of epoxy matrix syntactic foams

et al. 2018

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Influence of cenosphere surface modification and volume fraction on the solid particle erosion of cenosphere/epoxy syntactic foams is investigated. Fly ash cenospheres are used as filler in both as received and silane surface modified configurations. Erosion behavior is studied at room temperature for different impact angles (30, 45, 60, and 90 ) and velocities (30, 45, and 60 m/s). Neat epoxy shows the highest erosion rate compared with that of the syntactic foams. Results show a strong dependence of impact angle and velocity on erosion rate of syntactic foams. With increasing cenosphere content erosion rate decreases for all impact angles. Erosion rate decreases with increasing impact angle and with decreasing velocity. Good interfacial bonding of treated cenospheres enhances the erosion resistance. All the samples exhibit ductile erosive behavior, with maximum erosion at 30 . The velocity exponent and erosion efficiency parameters confirm the ductile behavior of syntactic foams. POLYM. COMPOS., 40:2109-2118, 2019

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Compressive behavior of Habesha eggshell particulate reinforced epoxy composites

et al. 2022

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Environmental pollution has become one of the major challenges to overcome in recent decades. Disposing waste materials has caused great concern by creating a landfill burden and increased environmental pollution. Utilizing or recycling wastes is one of the approaches considered that could bring positive environmental and economic benefits. Eggshells are among the understated waste materials that have great potential to impact the material world. In the present work, Habesha eggshells native to Ethiopia are utilized to prepare epoxy based composites. Five types of composites by varying the Habesha eggshell content (0, 2.5, 5, 7.5, and 10 vol%) are investigated. Physical characterization in terms of density and void content estimations, and eggshell particle size analysis are carried out. Mechanical characterization in terms of normal and quasi-static compression tests are performed. Results infer the density of eggshell particles to increase with increasing eggshell content, while quasi-static compression tests infer that modulus and strength of eggshell/epoxy composites are sensitive to variations in the strain rate. However, irrespective of the strain rates, all the eggshell/epoxy composites depict higher modulus as compared with neat epoxy specimens. At 1.43, 0.1, and 0.001 strain rates, increase in modulus of composites are in the range of 17%-57%, 3%-107%, 30%-114%, respectively. Further, compressive yield strength of all the Habesha eggshell/ epoxy composites is low compared with epoxy specimens for all the strain rates investigated. Scanning electron micrographs of test specimens for different loading conditions reveal reinforcing egg shell particles assists in absorbing the loading effectively.

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Effect of particle surface treatment and blending method on flexural properties of injection-molded cenosphere/HDPE syntactic foams

Cited by 72 publications

References 52 publications

Effect of cenosphere surface treatment and blending method on the tensile properties of thermoplastic matrix syntactic foams

Effect of cenosphere surface treatment and blending method on the tensile properties of thermoplastic matrix syntactic foams

Effect of cenosphere filler surface treatment on the erosion behavior of epoxy matrix syntactic foams

Compressive behavior of Habesha eggshell particulate reinforced epoxy composites

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