Electrical properties of epoxy resin based nano-composites

Abstract

We investigate the electrical properties of composite materials prepared as nano-and sub-micron-scale metal-oxide particles embedded in a commercial resin. The filler particles are barium titanate and calcium copper titanate. The physical and structural characteristics of the constituents and the fabricated composites are reported. Electrical characterization of the composite samples is performed using time-and frequency-domain dielectric spectroscopy techniques. The electrical breakdown strength of samples with nano-and sub-micron-sized particles have better electrical insulation properties than the unfilled resin.

Functional epoxy composites for high voltage insulation involving c-BN and reactive POSS as compatibilizer

“…For the last decade, there has been a deep interest in nano-composite research in the scientific community in numerous fields [7,8], and more recently also in terms of dielectric materials [9][10][11][12]. This novel class of dielectric materials is commonly called polymer nanodielectrics.…”

Electrical and Mechanical Properties of Titanium Dioxide Nanoparticle Filled Epoxy Resin Composites

“…The keystone for tailoring the structure-property of these composites is to understand the effect of the fillers in the electrical, thermal and mechanical properties of the samples. Towards this direction several investigations have been performed on different polymer matrices and filler types and geometries [2][3][4][5][6][7][8][9]. Unambiguously, the dispersion of the fillers is intrinsically related to the performance of the nanocomposites.…”

“…For implementing the filler dispersion numerous methods and processing conditions have been reported which roughly can be classified into ex-situ and in-situ techniques. The term ex-situ refers to mixing of the polymer matrix with the inorganic particles either in solution or by mechanical means, whereas the term in-situ is used when the particles are synthesized within the polymer matrix [8]. In this work we employed the ex-situ method (which is commonly used) for formulating nanocomposites based on epoxy resin and titanium dioxide, TiO 2 , nanoparticles.…”

Epoxy nanodielectrics fabricated within situandex situtechniques

“…Here, we focus on a commercial cryogenic resin and fabricate a nanocomposites using in situ and ex situ synthesis methods. The Nanodielectric Research was initiated at Oak Ridge National Laboratory in 2005 by blending commercial nanoparticles with a cryogenic resin using an ex situ method [11]. The main issue with ex situ methods has been the breaking of the agglomeration of nanoparticles [12].…”

“…To illustrate the strength of the in situ method previously studied systems are also shown in Figure 1(a) and 1(d), which clearly indicate the dispersion in the sample prepared with the in situ technique is uniform, although the particle size is not there are nanoparticles between large particles in Figure 1(d). The commercial particle sizes in Figure 1(a) were between 20 and 100 nm [11], while in Figure 1(b) the particles, which were prepared in-house, have size distribution between 2 and 10 nm [18].…”