Physical properties of epoxy resin/titanium dioxide nanocomposites

Abstract

A polymeric nanocomposite system (nanodielectric) was fabricated, and its mechanical properties were determined. The fabricated nanocomposite was composed of low concentrations of monodispersed titanium dioxide (TiO2) nanoparticles and an epoxy resin specially designed for cryogenic applications. The monodispersed TiO2 nanoparticles were synthesized in an aqueous solution of titanium chloride and polyethylene glycol and subsequently dispersed in a commercial‐grade epoxy resin (Araldite® 5808). Nanocomposite thin sheets were prepared at several weight fractions of TiO2. The morphology of the composites, determined by transmission electron microscopy, showed that the nanoparticles aggregated to form particle clusters. The influence of thermal processing and the effect of filler dispersion on the structure–property relationships were identified by differential scanning calorimetry and dynamic mechanical analysis at a broad range of temperatures. The effect of the aggregates on the electrical insulation properties was determined by dielectric breakdown measurements. The optical properties of the nanocomposites and their potential use as filters in the ultraviolet–visible (UV–vis) range were determined by UV–vis spectroscopy. POLYM. ENG. SCI., 2011. © 2010 Society of Plastics Engineers

Effects of Functionalized Nano-TiO2 on the Molecular Motion in Epoxy Resin-Based Nanocomposites

“…Based on reported results, the introduction of silane coupling agents-modified nano-SiO 2 decrease the T g of epoxy resin according to the loss factor of mechanical modulus [1]. Similar results of decreased T g have been reported about nano-Al 2 O 3 [2][3][4][5], nano-TiO 2 [3,6], nano-ZnO [7], and nano-MgO [8] fillers. There have been similar reports of increased T g , although the same kind of nanofiller was used.…”

Nanofiller dispersion in polymer dielectrics

“…These novel materials have introduced a new opportunities to improve properties of materials and develop novel electrical insulation systems [4]- [7]. Although, improvements in electrical properties have been reported [3], [8], few work presented the de tails [5], [9], [10]. Here we concentrate on the different routes to manufacture nanocomposites with ex-situ and in-situ methods.…”

Biodegradation Study of Nanocomposites of Phenol Novolac Epoxy/Unsaturated Polyester Resin/Egg Shell Nanoparticles Using Natural Polymers

“…The hydroxyl groups formed in this reaction are able to react with epoxide groups [5,6]. Products prepared from polymer nanocomposites have many applications at various industries such as chemical, automotive, construction, military, medical, home appliances, sports, agriculture, and electronics and these reduce the fuel and energy consumption, increase safety and resistance against earthquakes and fires, extend the life of structures, reduce losses caused by storage of food and agricultural products, reduce losses due to corrosion, and briefly can lead to an efficient use of existing resources [7,8]. However, despite having numerous applications of polymer nanocomposites, disposal of their waste can cause serious damages to the nature and environment, as well as affecting the costs which can lead to a serious challenge for polymer industry.…”