An experimental study of mechanical properties and heat transfer of acrylic composites with structural and surface modified Al2O3 particles

Thermal properties of acrylate-based composite combined with alumina-based particles were investigated. The composites were made of poly (methyl methacrylate) (PMMA) modified with dimethyl itaconate (DMI) as a matrix. Neat alumina particles (Al2O3) and alumina doped with iron oxide (Al2O3-Fe) modifi...

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Bibliographic Details
Published in:Science of sintering 2020, Vol.52 (4), p.457-467
Main Authors: Malisic, Vanja, Tomic, Natasa, Vuksanovic, Marija, Balanc, Bojana, Stevic, Zoran, Marinkovic, Aleksandar, Jancic-Heinemann, Radmila, Putic, Slavisa
Format: Article
Language:English
Subjects:
al2o3 particles
Alpha rays
Alumina
Aluminum oxide
Biodiesel fuels
Composite materials
Crack propagation
Dimethylitaconate
Elongation
Esters
Fatty acids
Flax
Heat conductivity
Heat transfer
Iron oxides
Mechanical properties
Modulus of elasticity
Particulate composites
Polymers
Polymethyl methacrylate
reinforcement
Stiffness
Tensile strength
Thermal conductivity
thermal properties
Thermodynamic properties
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Summary:Thermal properties of acrylate-based composite combined with alumina-based particles were investigated. The composites were made of poly (methyl methacrylate) (PMMA) modified with dimethyl itaconate (DMI) as a matrix. Neat alumina particles (Al2O3) and alumina doped with iron oxide (Al2O3-Fe) modified with 3-aminopropyl-trimethoxylane (AM) and flax oil fatty acid methyl esters (biodiesel - BD) were used as reinforcement. Thermal conductivity measurements showed that composite with alumina particles with the highest alpha phase content had the highest thermal conductivity values. Mechanical properties (tensile strength, modulus of elasticity and elongation at break) were improved by the addition of modified alumina particles to PMMA/DMI matrix. The thermal properties are the most improved for composite with 3 wt.% Al2O3-Fe-AM particles that had the lowest temperature in a crack zone was noticed (10.28 %) compared to PMMA added due to the better stiffness and highest thermal conductivity.
ISSN:0350-820X
1820-7413
DOI:10.2298/SOS2004457M