Study of the Chemical, Climatic and Thermal Resistance of Epoxy Coatings Filled with Natural and Synthetic Wollastonite

Author:

Gotlib Elena M.1,Phuong Ha Thi Nha1,Yamaleeva Ekaterina1,Galimov Engel2,Hung Nguyen Duy3

Affiliation:

1. Kazan National Research Technological University

2. Kazan National Research Technical University

3. Viet-Hung Industrial University

Abstract

The article shows that synthetic wollastonite, obtained on the basis of a mixture of calcium oxide and silicon oxide, as well as calcium carbonate and silicon dioxide, increases the thermal stability of epoxy materials filled with it. The chemical and atmospheric resistance of epoxy films filled with wollastonite is on average 0.2 – 0.3% lower than that of the base composition, which is probably due to the porosity of both synthetic and natural wollastonite. The phase composition of synthetic wollastonite does not significantly affect chemical resistance of epoxy materials filled with it. The chemical resistance of epoxy compositions, regardless of their composition, is lower in weakly acidic solutions and water, in comparison with weakly alkaline and saline solutions.

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,General Materials Science

Reference13 articles.

1. E. Gotlib, P.T.N. Ha, T.L.A. Nguyen, A. Sokolova, E. Yamaleeva, I. Musin, Agricultural by-products as advanced raw materials for obtaining modifiers and fillers for epoxy materials, Key Engineering Materials. 822 (2019) 343-349.

2. V.A. Tyulnin, V.R. Tkach, V.I. Eirich, Wollastonite - a unique mineral raw material for multipurpose purposes, Ore and Metals, Moscow, (2003).

3. M.S Nizami, Studies on the synthesis of wollastonite from rice husk ash and limestone", Institute of Chemistry, University of the Punjab, Lahore Pakistan. (1993).

4. L.A. Zemnukhova, G.A. Phedoritshcheva, А.G. Egorov, V.I. Sergienko, Investigation of the conditions of obtaining, composition, extraneous matters and properties of amorphous silicon dioxide from the rice by-products, Journal of Applied Chemistry. 2 (2005) 324-328.

5. E.M. Gotlib, I. D. Tverdov, T.N.F. Phuong, E.S. Yamaleeva, Optimization of the temperature for obtaining synthetic wollastonite based on rice husks, Butlerov Communications. 63 (8) (2020) 18-23.

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