CHARACTERISATION AND COMPARISON OF DIFFERENT SIZES NANO ZNO POWDERS

1,2 ZEGZULKA Jiří
Co-authors:
1 JEZERSKÁ Lucie 1 ŽÍDEK Martin 2 PROKEŠ Rostislav
Institutions:
1 VSB-Technical University of Ostrava, ENET Centre, Laboratory of Bulk Materials, 17. listopadu 15, 708 33 Ostrava, Czech Republic, lucie.jezerska@vsb.cz
2 VSB-Technical University of Ostrava, Faculty of Mining and Geology, Department of Mining Engineering and Safety, 17. listopadu 15, 708 33 Ostrava, Czech Republic
Conference:
11th International Conference on Nanomaterials - Research & Application, Hotel Voronez I, Brno, Czech Republic, EU, October 16th - 18th 2019
Proceedings:
Proceedings 11th International Conference on Nanomaterials - Research & Application
Pages:
573-579
ISBN:
978-80-87294-95-6
ISSN:
2694-930X
Published:
1st April 2020
Proceedings of the conference have been sent to Web of Science and Scopus for evaluation and potential indexing.
Metrics:
15 views / 2 downloads
Abstract

Zinc oxide plays an important role in various industries from electronics to cosmetics. Due to its special characteristics such as antiseptic, astringent and fungistatic properties, anti-corrosion, low electron conductivity and good heat resistance is still the subject of current research. Therefore, friction parameters, compressibility factors, flowability and sensitivity to aeration have been investigated. For this purpose, two nano and one micro-sized ZnO powders were characterized and compared. Experimental work was performed by the Powder Rheometer and Disk Centrifuge. Also a shape analysis of samples were made. The subjects were questions like - how easy consolidated nano/micro ZnO powders will begin to flow or how volume changes as a function of applied normal stress. The first results showed that the slight variations in the shape and size of the ZnO particles could cause differences in the behaviour of the tested powders.

Keywords: ZnO, flowability, angle of internal friction, wall friction, particle size
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