Physical properties of epoxy resin/titanium dioxide nanocomposites

Journal Article · Sat Jan 01 04:00:00 EST 2011 · Polymer Engineering & Science

DOI:https://doi.org/10.1002/pen.21783· OSTI ID:1008819

Polyzos, Georgios ^[1]; Tuncer, Enis ^[1]; Sauers, Isidor ^[1]; More, Karren Leslie ^[1]

---

1. ORNL

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 (TiO{sub 2}) nanoparticles and an epoxy resin specially designed for cryogenic applications. The monodispersed TiO{sub 2} nanoparticles were synthesized in an aqueous solution of titanium chloride and polyethylene glycol and subsequently dispersed in a commercial-grade epoxy resin (Araldite{reg_sign} 5808). Nanocomposite thin sheets were prepared at several weight fractions of TiO{sub 2}. 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.

• Research Organization: Oak Ridge National Laboratory (ORNL); Center for Nanophase Materials Sciences
• Sponsoring Organization: OE USDOE - Office of Electric Transmission and Distribution
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 1008819
• Journal Information: Polymer Engineering & Science, Journal Name: Polymer Engineering & Science Journal Issue: 1 Vol. 51; ISSN 0032-3888
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AQUEOUS SOLUTIONS
BREAKDOWN
CALORIMETRY
CRYOGENICS
DIELECTRIC MATERIALS
ELECTRICAL INSULATION
FILLERS
MECHANICAL PROPERTIES
MORPHOLOGY
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
POLYETHYLENE GLYCOLS
PROCESSING
RESINS
SPECTROSCOPY
TITANIUM
TITANIUM CHLORIDES
TRANSMISSION ELECTRON MICROSCOPY