Effect of boron nitride modified by sodium tripolyphosphate on the corrosion resistance of waterborne epoxy coating.

Autor:	Yao, Hongrui, Bi, Wenya, Yin, Xu, Mu, Shenglong, Sha, Shiqiang, Wang, Na
Předmět:	EPOXY coatings BORON nitride SODIUM tripolyphosphate CORROSION resistance SILANE coupling agents COMPOSITE coating
Zdroj:	Journal of Coatings Technology & Research; Sep2023, Vol. 20 Issue 5, p1513-1527, 15p
Abstrakt:	In this work, h-BN@STPP was successfully obtained by facile co-modification of sodium tripolyphosphate (STPP) and silane coupling agent (KH-550) on h-BN nanosheets, with waterborne epoxy coatings incorporated for metallic substrate corrosion protection. Results showed that the impedance modulus at the lowest frequency (Zf=0.1 Hz) of h-BN@STPP composite coating increased three orders of magnitude in comparison with neat waterborne epoxy coating, exhibiting outstanding corrosion resistance. The reinforced anticorrosion performances of h-BN@STPP composite coatings could be attributed to the "labyrinth effect" of h-BN and passivation effect of STPP on the metal substrates. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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