Effects of hollow glass microsphere density and surface modification on the mechanical and thermal properties of poly(methyl methacrylate) syntactic foams

Ozkutlu, Merve; Dilek, Çerağ; Bayram, Göknur

doi:10.1016/j.compstruct.2018.02.088

Cited by 56 publications

(51 citation statements)

References 16 publications

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“…The theoretical densities of lightweight rubber were calculated using the mixing rule, 19 as shown in Equation ).

ρ_{c}^{*} = ρ_{h} φ_{h} + ρ_{m} ((), 1 - φ_{h}),

where ρ h is the true density of HGB, ρ m is the density of pure rubber, and φ h is the volume fraction of HGB.…”

Section: Resultsmentioning

confidence: 99%

“…The results showed that the addition of HGB to PCL was greatly improved the rheological and mechanical properties of the material. Merve Ozkutlu et al 19 prepared polymethyl methacrylate composite foams from three different types of HGB at low, medium, and high densities. The results showed that the density of the composite foams was inversely proportional to the strength of the composite foams.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of hollow glass beads on density and mechanical properties of silicone rubber composites

Quan

Han

Shao

et al. 2020

J of Applied Polymer Sci

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In this work, low density hollow glass beads (HGB)/silicon rubber (SR) composites were prepared by solution method and flocculation process. The prepared samples were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, tensile test, and friction test. The results show that the densities of SR composites decrease from 1.140 to 0.792 g/cm3 with the addition of HGB. By comparing theoretical density with true density, it can be estimated that the ratio of shattered HGB increase from 8.79% to 24.76%. Especially, the mechanical properties of SR composites were improved by surface modification of HGB. By adding surface‐modified HGB at 5 and 10 wt%, the tensile strengths of SR composites were enhanced by 17.8% and 28.2%, respectively. In addition, tear strength, shore A hardness, compression set, and friction property were significantly ameliorated. Furthermore, the mechanism of surface‐modified HGB in mechanical properties was analyzed.

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“…The theoretical densities of lightweight rubber were calculated using the mixing rule, 19 as shown in Equation ).

ρ_{c}^{*} = ρ_{h} φ_{h} + ρ_{m} ((), 1 - φ_{h}),

where ρ h is the true density of HGB, ρ m is the density of pure rubber, and φ h is the volume fraction of HGB.…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of hollow glass beads on density and mechanical properties of silicone rubber composites

Quan

Han

Shao

et al. 2020

J of Applied Polymer Sci

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“…Compatibilizing agents are used to promote adhesion between the HGM and the polymer matrix, thus improving composite mechanical properties under tensile 17 and flexural stress 18 . The most commonly used compatibilizers to serve as a bridge between the matrix and the filler are those made from Maleic Anhydride, Dicumyl Maleate and Silane Agents [19][20][21] . The works of PATANKAR and KRANOV 9 , PATANKAR 20 and ÇELEBI 22 point out the efficiency of compatibilizing agents in the formation of syntactic foams.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Syntactic Foams made from Green Polyethylene and Glass Microspheres: Morphological and Mechanical Characterization

et al. 2019

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Polymeric syntactic foams are composites made from the mixture of Hollow Glass Microspheres (HGM) and polymer matrices. One of their main characteristics is their low density and the production of these composites using a matrix derived from renewable sources potentiates their development without neglecting sustainability. In this paper , the properties of High Density Polyethylene (HDPE)/HGM syntactic foams containing 1% and 5% w/w HGM and 5% w/w of a compatibilizer are assessed. The composites were prepared by two processing routes: single screw extruder and twin screw extruder. The morphology and mechanical properties (tensile and impact) of the syntactic foams thus manufactured were ascertained. Morphological analysis indicated that matrix/filler adhesion was poor for all samples and that the best HGM dispersions were obtained in twin screw extruded samples. Mechanical properties were affected by the processing route adopted and by the content of hollow glass microspheres added. Elastic modulus, tensile strength and strain were reduced by 20, 10 and 23%, respectively, in systems processed in a twin screw extruder. Impact strength was the exception, with an increase of more than 300%. Higher contents of hollow glass microspheres led to reductions in mechanical strength of the syntactic foams, varying from 5% for the elastic modulus to 50% for strain.

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“…Researchers studied SFs because of the low density, superior compressive strength, acoustic, thermal damping and electromechanical properties [14][15][16]. SFs have been used for buoyancy in subsurface and deep-sea applications, sandwich structures for aerospace, aviation and transportation, thermal insulation materials for oil and gas industries and other applications [17][18][19][20][21][22][23]. Also, matrix types, matrix formulation and SFs performance have been studied widely [24][25][26], while filler types [26][27][28][29][30], porous microsphere types [22,[31][32][33] and method of production [30,34,35].…”

Section: Introductionmentioning

confidence: 99%

“…SFs compressive properties, modulus elasticity, flexural strength, tensile strength, thermo-insulation, thermochemical and sound properties have been enhanced by manipulating various fact ors [36][37][38]. Although, there have been considerable progress achieved in the study of SFs application [18,39,40]. But there are few research endevoiur on the types and effect of microsphere surface coatings on the SFs [41].…”

Section: Introductionmentioning

confidence: 99%

Failure Mechanism of Two-Phase Syntactic Foam Polymer Composites under Different Coating Conditions

Afolabi

Ariff

Mutalib³

2019

IJIE

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In this study, the impact of coated hollow microsphere (HMs) on syntactic foams (SFs) failure analysis is performed. The HMs was made from polystyrene beads and were coated with CaCO3 and cementite powder to produce the SFs by Vacuum Assisted Mould Fill Technique (VAMFT). The morphological analysis was performed using Scanning Electron Microscope (SEM) and the compressive test conducted using INSTRON 5982 machine model. From the results, the HMs failure mechanism showed the cementite surface coating enhanced the shellrigidity by 65%. The physical and compressive properties of the SFs increased with increase in % vol. fraction of the HMs. The SFs compressive modulus, flexural strength and tensile strength for the CaCO3 and cementite specimen are 470,44, 36 MPa and 582,48,41 MPa, respectively. The energy absorption characteristic of the SFs was enhanced by 14% and 25% for the CaCO3 and cementite HMs surface coating, respectively. But the optimal concentration for the SFs was 20% vol. weight for both HMs coating.

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Effects of hollow glass microsphere density and surface modification on the mechanical and thermal properties of poly(methyl methacrylate) syntactic foams

Cited by 56 publications

References 16 publications

Effect of hollow glass beads on density and mechanical properties of silicone rubber composites

Effect of hollow glass beads on density and mechanical properties of silicone rubber composites

Preparation of Syntactic Foams made from Green Polyethylene and Glass Microspheres: Morphological and Mechanical Characterization

Failure Mechanism of Two-Phase Syntactic Foam Polymer Composites under Different Coating Conditions

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