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

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.

• Periodical: Key Engineering Materials (Volume 899)
• Pages: 317-325
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.899.317
• Online since: September 2021
• Authors: Elena M. Gotlib, Ha Thi Nha Phuong, Ekaterina Yamaleeva*, Engel Galimov, Nguyen Duy Hung
• Keywords: Chemical Resistance, Climatic Resistance, Rice Husk, Silicon Oxide, Thermal Stability, Wollastonite

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