THE STUDY OF THE EFFECT OF ZIRCONIUM OXIDE NANOPARTICLES (ZRO2) AND MULTIWALL CARBON NANOTUBES (MWCNTS) ON SOME MECHANICAL PROPERTIES OF PMMA NANOCOMPOSITES

  • Haqi I. A., Olfat A. M.
Keywords: Poly Methyl Methacrylate PMMA , nanoparticles , Mechanical Properties, Nano composites , Impact Test , Multiwall carbon nanotubes MWCNTs , Zirconium Oxides( ZrO2 ),(Hardness shore D).

Abstract

In this paper, Samples of two types of thermosetting polymeric-based nanocomposites are prepared (Unsaturated Polymer Resin). The base material for these compounds is (poly metheyl metha acrylate) PMMA resin. Because two sets of nanomaterial-supported complexes were prepared separately, it has a viscous liquid state. The first group's samples (PmmaZrO2) were polymerizations of polymethyl methacrylate fortified with minutes of zirconium oxide nanoparticles (ZrO2), while the second group's samples (pmmaMWCNTs) were polymerizations of polymethyl methacrylate supported with Multiwall Carbon nanotubes (MWCNTs).  In addition to the pure polymer sample (Pmma) without any addition, the consolidation process for both groups was done with nanomaterials with hardening hardener and polymer to obtain the supported test samples. Our research included the effects of the selected Volume Fractions ratios for each nanomaterials of them, which are as follows : -           

( 0, 0.02%, 0.04%, 0.0.6%,0.08% and 1 wt%) and followed the same weight   ratios for both nanomaterials used for reinforcement with PMMA base polymer. This was done at room temperature and by (Hand Lay-up) for each material separately in addition to the pure polymer samples.  We focused on two of the mechanical properties represented by the research's two axes, which are the Impact Strength, Hardness and Bending Tests for each. These two tests were performed with devices designated for each of them ,and the results of this study showed that the values of each of them increased as the weight fractional content of the reinforcement  particles  increased, and this was true for both materials and tests.   The results showed that the PMMA samples supported by (Multiwall carbon tubes) were the best, with the highest values for all impact strength and hardness, as well as the highest values for not showing and showing resistance to changes in the models' mechanical properties from those samples supported by (Multiwall carbon tubes) (nanostructure zirconium oxide). The best results were in the weight ratio samples (n 1% ) for both impact strength and hardness tests, and the models supported by carbon nanotubes (pmma\ MWCNTs) had a special preference over their counterparts supported with nanoscale zirconium oxide particles (PmmaZro2). Materials were prepared to be used in the manufacture of a denture using a composite material, as well as their properties being studied. Poly methyl methacrylate (PMMA) resin is widely utilized in dental applications. Two types of additives (Nano zirconium oxide Zro2) and (Multiwall carbon Nanotube MWCNTs) with different Volume Fractions ratios percentages (0,0.02%,0.04%,0.06%, 0.08and1%) were added to PMMA resin to increase its properties. The mixtures were chosen experimentally to obtain the best possible results in terms of some of their properties, as well as to avoid the formation of cracks. In comparison to pure samples, the results showed that adding weight ratios of Nanotube to (pmma) resulted in (impact strength) & (Hardness shore D) and (Bending Test results). When the impact strength of the sample is pure (830 J/ m2), it reaches its maximum value (5620 J/ m2) at the weight percentage (n 1% percent) of the (Multiwall Carbon nanotubes MWCNTs). It is the highest value of the  effect of all study models combined in the research at all ,while the worst value of the impact is at the (0.02%) weight ratio from the same tubes ,which reached (2900 J / m2), the lowest value of the impact effect . While the maximum impact value for the pmma models supported by zirconia (ZrO2) was (2550 J/m2), the lowest value was (1200 J/m2), both at (n 0.02%) from all studied research samples.  The results are shown in relation to the (Hardness Shore D test) of the sample when it is pure (44.8), with the maximum value (91) obtained at the weight percentage (n 1%) of the (Hardness shore D) Multi walled Carbon nanotubes (MWCNTs). It is the highest value of all study models combined in the research, while the worst value of the (Hardness shore D) is at the (n 0.02%) weight ratio from the same tubes ( MWCNTs ), which reached (88) ,which is the lowest value of the (Hardness shore D).While the maximum value for pmma models supported by zirconia (Zro2) was (Hardness (89) also at (n 1%), the lowest value was (63.35), also at (n 0.02%)from all research samples examined.

 Finally,  the results of the bending tests show that the flexural strength for the pure sample (20.25MPa), reached its maximum value (63,53 MPa) at the weight percentage (n 0.08%) for both (MWCNTs) and (ZrO2) while the flexural young, s modules (0.003Gpa) for the pure sample. In the same vein (0.008GPa,0.03GPa) for (pmma-n0.08%MWCNTs&PMMA-0.08%nZrO2). Consecutively, it is the highest value of all study models combined (Nano composite) in the research.

Published
2021-08-03
How to Cite
Olfat A. M., H. I. A. (2021). THE STUDY OF THE EFFECT OF ZIRCONIUM OXIDE NANOPARTICLES (ZRO2) AND MULTIWALL CARBON NANOTUBES (MWCNTS) ON SOME MECHANICAL PROPERTIES OF PMMA NANOCOMPOSITES. Design Engineering, 5911-5936. Retrieved from http://www.thedesignengineering.com/index.php/DE/article/view/3097
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Articles