Open AccessSynthesis and corrosion Resistance of silane coupling agent modified graphene oxide/waterborne polyurethane
Author(s) -
Shasha Shu,
Lin Wu,
J M Liu,
Y Liu,
Yu Hu,
Jinhui Xu,
L Wang
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/631/2/022058
Subject(s) - materials science , corrosion , polyurethane , coating , graphene , silane , oxide , composite number , composite material , grafting , mass fraction , metallurgy , nanotechnology , polymer
In this paper, graphene oxide (GO) is used as a matrix, and it is modified with a silane coupling agent (KH550) to prepare modified GO. The GO/waterborne polyurethane composite coatings with different contents are prepared by chemical grafting, and their structural characterization tests are carried out. The results show that the silane coupling agent can effectively modify GO, and the surface of the modified GO has more oxygen-containing functional groups. The added modified GO can effectively enhance the corrosion resistance of the coating, and the corrosion resistance of the composite coating was optimal when the mass fraction is 0.03%, and 5% corrosion occurs after 48 h, and the total corrosion time reaches 120h.