Abstract
In this research, hand lay- up technique is used to prepare samples from epoxy resin reinforced with multi- walled carbon nanotubes in different weight fractions (0, 2, 3, 4, 5) wt%. The immersion effect by sodium hydroxide solution (NaOH) at normality (0.3N) for a period of (15 days) on the thermal conductivity of nanocomposites was studied, and compared to natural condition (before immersion). The thermal conductivity of epoxy nanocomposites specimens were carried out using Lee’s disk method. The experimental results showed that thermal conductivity increased with increase weight fraction before and after immersion for all specimens, while the immersion effect leads to decrease thermal conductive values compared to thermal conductivity values in natural condition.
Highlights
Polymer nano composites are a new kind of polymeric materials
The results showed the increase of hardness, thermal conductivity, electrical conductivity and break down strength with the increase of multiwalled carbon nanotubes (MWCNTs) concentration, but the behavior of dielectric loss factor and dielectric constant is opposite that
In this study, MWCNTs used as a filler in epoxy resin
Summary
Polymer nano composites are a new kind of polymeric materials. They have polymer (epoxy, polyester, ...etc) as a matrix material, and nano additives are utilized as reinforcement material. The nano additives can be 1-D (fibers and nanotubes), 2-D (layered materials like clay) or 3-D (spherical particles). Polymer nano composites have been gaining a great deal interest both in industrial and academia because of their outstanding electrical, thermal and mechanical properties with small concentration of nano additives [1]. Polymers have excellent properties such as high durability, lightweight, easy processing, ductility, corrosion resistance and low cost. Compared to metals and ceramics, polymers have relatively poor thermal, electrical and
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