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Author: search.filters.author.Makcharoen, W.

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    Recycling of Broken Waste Glass as Polyethylene Nanofiller for Electrical Insulating System
    (2022-01-01)
    Vittayakorn, W.
    ;
    Khunna, D.
    ;
    Buaphuen, P.
    ;
    Vittayakorn, N.
    ;
    Makcharoen, W.
    This work focuses on the preparation of a high-quality glass powder from the broken windowpane. The expected glass powder must show a high amount of silicon dioxide with fine particle size. The processing technique used in this work is coarse grinding and high-speed vibratory milling under a variety of conditions to get the best quality of glass powder. The particle size and particle size distribution were examined by using DLS technique. The chemical composition was examined by EDX together with FT-IR and XRF spectroscopies. The results showed that the wide range of particle size distribution occurred in all milling conditions, which approximately ranged from 0.3 to 7 µm, and the 270 min-milling time showed the smallest particle size of glass powder. The chemical analysis showed that the glass powder is rich in silica which contained about 70.47% of SiO<inf>2</inf>. After that, the various ratios of the glass powder/HDPE composites were formed by using the traditional casting method. The physical and electrical properties were investigated for all composites. The results showed that after adding glass powder into the HDPE matrix, the ε<inf>r</inf> value significantly drops due to the inorganic filler suppressed polarization within the systems. For the resistivity, the ρ value significantly increases after adding glass powder to the HDPE matrix for all compositions because this filler promotes the hinder of electric current flow. Finally, it can conclude that the waste glass powder can use as a filler in the HDPE-based composite as better as the commercial SiO<inf>2</inf> powder for the electrical insulting application.
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    Influence of various nanofillers on mechanical and electrical properties of epoxy resin composites
    (2022-01-01)
    Kitichatpayak, D.
    ;
    Makcharoen, W.
    ;
    Vittayakorn, N.
    ;
    Vittayakorn, Wanwilai
    Epoxy-based composites are widely used in the aircraft, automobile, and microelectronic industries. The incorporation of various nanofillers into epoxy resins can yield high-performance composites having high strength, lightweight, and multifunctional properties. So, this work focuses on the preparation of various inorganic nanoparticles including the waste glass powder received from the broken windowpane filled in an epoxy resin matrix to create high-performance composites. The physical, chemical, mechanical, and electrical properties were investigated for all samples. The results show that the neat epoxy resin shows the lowest HV value and loses the most weight in the abrasion test. Whereas ZnO/epoxy resin composite shows the highest H<inf>V</inf>, the Al<inf>2</inf>O<inf>3</inf>/epoxy resin composite loses less weight in the abrasion test. For electrical results, the resistivity of epoxy resin composites filled with 2 wt% of Al<inf>2</inf>O<inf>3</inf> shows the highest value which is about 45% increase from the pure epoxy resin. Finally, it can be concluded that all inorganic fillers which are SiO<inf>2</inf>, Al<inf>2</inf>O<inf>3</inf>, TiO<inf>2</inf>, and ZnO including waste glass powder can really improve the hardness, abrasion resistance, and electrical resistivity of the epoxy resin.
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    Effect of surface treatment on electrical properties of barium titanate/carbon nanotube/polydimethylsiloxane nanocomposites
    (2018-09-05)
    Nawanil, C.
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    Panprom, P.
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    Khaosa-Ard, K.
    ;
    Makcharoen, W.
    ;
    Vittayakorn, N.
    Piezoelectric-based polymer composite for flexible self-powered materials have been of interest. In this research, the effect of surface treatment on electrical properties of barium titanate/carbon nanotube/polydimethylsiloxane (BT/CNT/PDMS) composites has been studied for acquiring high performance materials. In the preparation of BT/CNT/PDMS nanocomposite, the surface of CNT and BT disperse phases were modified to introduce a functional groups. These chemical treatments devoted to improve the interfacial interactions and dispersion by introduce the strong interaction between BT, CNT and PDMS. The measured electrical outputs of the modified BT based nanocomposites showed higher output voltage than the normal composite. It is indicates that the strong interaction between fillers and polymer matrix is the important factor to improved electrical properties of the composites. Furthermore, the results also shown an enhancement of relative permittivity and maintaining a low loss of polymer nanocomposites, which indicates that the dielectric properties of composites are influenced not only by relative permittivity of the components, but also dependence on interactions between ceramics and polymers.