Authors
1 Department of Materials Engineering, University of Technology, Baghdad, Iraq.
2 Department of Physics, University of Anbar, Anbar, Iraq.
Abstract
Current work is aimed to preparation the nanocomposites laminates
of low density and good durability to use in structural applications. So, in this
paper, the preparation and compare of some mechanical properties of two
groups of tri-polymer blends composites consisting of ((93% unsaturated
polyester resin (UP)+(5%PMMA) (Poly methyl methacrylate)+2%NR
(Natural Rubber)) as the matrix materials. Added the reinforce materials
(silica (SiO2) and zirconia (ZrO2) nanoparticles) individually, with different
volume fraction of (0, 0.5, 1, 1.5%) to the ternary polymer blends according
to the following formula:- [((100-X) (93%UP)+2%NR+5%PMMA): (X%SiO2
or X% ZrO2)] The first group is composed of matrix material reinforced with
zirconia (ZrO2) nanoparticles with average diameter of nanoparticles
(56.88nm) and the second group is composed of matrix material reinforced
with silica (SiO2) nanoparticles with average diameter of nanoparticles
(24.59nm). Then used as a matrix material for the preparation of hybrid
laminar composites materials, reinforcement with one and two layers of
woven carbon fibers The research included the study of the influence of
volume fraction of nanoparticles on some of mechanical and physical
properties like flexural strength, flexural modulus impact strength, and impact
fracture toughness, in addition to test infrared spectroscopy (FTIR) and all of
these tests were carried out at laboratory temperature. Search results have
shown that the values of (flexural modulus and impact strength and fracture
toughness) increases with the increase of the nanoparticles ratios in polymer
blend nano composite of prepared samples. While flexural strength value
decreases with the increase in the volume fraction of nanoparticles in polymer
blend nano composite. The fracture energy of the of hybrid laminar
composites is higher than those containing only the nanoparticles powders.
Morphology test by scanning electron microscope indicates that a good
adhesion or interfacial interactions between the Nano powders particles,
carbon fibers and components of ternary polymer blend. Which results in
higher the carbon fibers efficiency factor, and hence higher mechanical
strength. So, the hybrid laminar nano composites, which appear high flexural
modulus and impact strength and fracture toughness, can be foreseen to
provide valuable contribution to high performance structural applications.
Keywords
- PMMA
- Unsaturated Polyester، Natural Rubber
- hybrid Nano Composite nano-silica
- nano-zirconia
- flexural strength
Main Subjects
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