Tribological and Anticorrosion Behavior of Coating Systems
Based on Polyurethane and Organic Silicon Compounds
A. E. Salamianskia, V. E. Agabekova, I. G. Chishankova, Y. V. Matveenkoa, G. B. Melnikovab,
Thuy Duong Nguyenc, Ke Oanh Vuc, Gia Vu Phamc, Anh Truc Trinhc,
Dai Lam Tranc, and Thi Xuan Hang Toc, *
a Institute of Chemistry of New Materials of NAS of Belarus, Minsk, Belarus
b Luikov Heat and Mass Transfer Institute of NAS of Belarus, Minsk, Belarus
c Institute for Tropical Technology, Vietnam Academy of Science and Technology, Cau Giay, Hanoi, Vietnam
Correspondence to: *e-mail: ttxhang@itt.vast.vn
Received 15 June, 2020
Abstract—Coating systems based on polyurethane (PU) coatings and coatings of oligomethylsiloxane resin (OMES) or oligomers of hydrolyzed heptadecafluorotetrahydrodecyltrimethoxysilane (HFS) were applied on carbon steel by the spin coating method. Wettability and tribologicalproperties of coating systems were determined by contact angle measurement and tribotechnical test. Corrosion resistance of coated carbon steels was investigated by electrochemical impedance spectroscopy. It was noted that the modification of the PU layer with silicon organic compounds increased its hydrophobicity and wear resistance. The water contact angles were 63.1° for PU coating alone, 81.2° for PU/OMES system and 115.8° for PU/HFS system. The modification of polyurethane coating with OMES reduced its friction coefficient from 0.14 to 0.04. Corrosion resistance of PU coatings was not improved with presence of OMES layer but significantly enhanced with presence of HFS layer.
Keywords: polyurethane coating, oligomethylsiloxane resin, fluorosilane, hydrophobicity, tribological behavior, corrosion protection
DOI: 10.1134/S2070205121050233