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Subject: search.filters.subject.Nanofillers

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    Item type:Publication,
    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 various nanofillers on the insulating properties of polyethylene composites
    (2022-01-01)
    Muenphan, Natcha
    ;
    Vittayakorn, Wanwilai
    This work focuses on the preparation of various inorganic nanoparticles i.e. Al<inf>2</inf>O<inf>3</inf>, SiO<inf>2</inf>, TiO<inf>2</inf> including the waste glass powder filled in high-density polyethylene (HDPE H455JA) matrix to create high-performance composites. The glass powder prepared from broken windowpane was used in this study in order to use as a guideline to find substitutes for commercial materials and also add value to waste and reduce costs. The 2 wt% of each filler was weighed and mixed with HDPE to create a composite by using a simple mold casting technique. The physical, chemical and electrical properties were investigated for all samples. The results show that the ε<inf>r</inf> value of the pure HDPE and the HDPE-based composites are approximately the same in all frequencies and the ε<inf>r</inf> of pure HDPE tends to decrease about 7.8% at elevated temperature, whereas the ε<inf>r</inf> value of composites is less decreased at higher operating temperatures for all samples which can imply that the composites are more capable of operating at higher temperatures than pure HDPE itself. For the electrical resistivity, the ρ value gradually increases at elevated temperature for all samples and the composites show a higher ρ value than that of pure HDPE.
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