The Different Percentage Performance of Nanoparticles and their Effect on the Properties of Exposy Resin

0431220 - ÚPT 2015 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Hudec, Jiří - Neděla, Vilém - Polsterová, H.
The Different Percentage Performance of Nanoparticles and their Effect on the Properties of Exposy Resin.
Workshop of Interesting Topics of SEM and ESEM. Brno: Institute of Scientific Instruments AS CR, v. v. i, 2014, s. 47-48. ISBN 978-80-87441-12-1.
[Workshop of Interesting Topics of SEM and ESEM. Mikulov (CZ), 26.08.2014-31.08.2014]
Grant CEP: GA MŠMT EE.2.3.20.0103
Institucionální podpora: RVO:68081731
Klíčová slova: performance of nanoparticles * properties of exposy resin
Kód oboru RIV: JA - Elektronika a optoelektronika, elektrotechnika

The study deals with impact of different percentage filling of nanoparticles on the electrical properties of epoxy resin, which has very good mechanical and electrical properties. The sample is the blended mixture which is evacuated, subjected to ultrasound and then cured. It is expected that the formation of lumps should be minimised due to the influence of microwaves. Nanoparticles should be equally distributed in epoxide volume for this case. Unfortunately, this assumption was not proven. The mixture contains an epoxy resin CY228, hardener HY918, softener DY045 and accelerator DY062. Nanoparticles of alumina (Al2O3), sulfur dioxide (SiO2), titanium dioxide (TiO2) and tungsten oxide (WO3) from Sigma Aldrich Company were used as a filler. There were made samples for each filler with 0.25, 0.5, 1, 2 weight percent for our experiment and were determined values of the dissipation factor tgδ, permittivity εr and resistivity ρv by measuring. We are able to prepare samples with better electrical properties. Unfortunately, despite the advanced procedure of samples production, our main problem is the inhomogeneity of distribution of nanoparticles in the sample manifested by the formation of lumps. Scanning electron microscope REM Jeol JSM 6700F was used to detect lumps of nanoparticles. The lowest permittivity was encountered in the samples with the 2% filling of Al2O3 and SiO2, in the case of TiO2 it was 1%. In the samples containing Al2O3 a SiO2 the impact of the nanoparticles on the intrinsic resistivity is evident in the full temperature range. The highest intrinsic resistivity is in the sample with the 0.5% content of SiO2, apart from the sample with 0.5% of Al2O3 which has a lower resistivity than pure epoxide. The most pronounced improvement in electrical properties of the resulting nanocomposite was achieved by adding Al2O3 and SiO2. The influence of TiO2 was less obvious, and adding the nanoparticles of WO3 caused no change in any of the measured parameters.
Trvalý link: http://hdl.handle.net/11104/0235966