POSS-tetraaniline modified graphene for active corrosion protection of epoxy-based organic coating

doi:10.1016/j.cej.2019.123160

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	POSS-tetraaniline modified graphene for active corrosion protection of epoxy-based organic coating
	Ye, Yuwei ; Yang, Dongping ; Zhang, Dawei ; Chen, Hao ; Zhao, Haichao ; Li, Xiaogang ; Wang, Liping
刊名	CHEMICAL ENGINEERING JOURNAL
	2020
卷号	383
关键词	VIBRATIONAL-SPECTRA PHYSICAL-PROPERTIES ANILINE TRIMER POLYANILINE ANTICORROSION ENHANCEMENT NANOTUBES SURFACE OXIDE PERFORMANCE
DOI	10.1016/j.cej.2019.123160
英文摘要	In this study, the tetraaniline (TA) grafted polyhedral oligomeric silsesquioxane (POSS) giant molecule was synthesized and used as graphene (G) dispersant to prepare a functionalization molecule (POSS-TA-G). Scanning electron microscopy (SEM), transmission electron microscopy (TEM) and ultraviolet visible spectroscopy (UV-Vis) were selected to evaluate the existence form and distribution state of pristine and modified graphene. After that, the epoxy coating with proper POSS-TA-G were coated on the surface of Q235 steel to form a function epoxy composite coating. Electrochemical impedance spectroscopy (EIS) and local electrochemical impedance techniques (LEIS) were chosen to estimate the effect of POSS-TA-G on barrier and self-healing performance of asprepared coating. Results revealed that the POSS-TA intercalated graphene presented a good dispersibility based on the p-p interaction between POSS-TA and graphene. Compared with pristine graphene, the POSS-TA-G displayed a good electroactivity and relatively lower conductivity, which could promote the formation of passivation film and reduce the risk of galvanic corrosion during long-term anti-corrosion process. The addition of 0.5 wt% POSS-TA-G could endow coating with superior anti-corrosion performance, including effective shielding properties caused by well-dispersion graphene and self-healing ability derived from POSS-TA.
学科主题	Engineering
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/19932]
专题	2020专题
作者单位	1.Zhao, HC 2.Wang, LP (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Key Lab Marine Mat & Related Technol, Zhejiang Key Lab Marine Mat & Protect Technol, Ningbo 315201, Zhejiang, Peoples R China.
推荐引用方式 GB/T 7714	Ye, Yuwei,Yang, Dongping,Zhang, Dawei,et al. POSS-tetraaniline modified graphene for active corrosion protection of epoxy-based organic coating[J]. CHEMICAL ENGINEERING JOURNAL,2020,383.
APA	Ye, Yuwei.,Yang, Dongping.,Zhang, Dawei.,Chen, Hao.,Zhao, Haichao.,...&Wang, Liping.(2020).POSS-tetraaniline modified graphene for active corrosion protection of epoxy-based organic coating.CHEMICAL ENGINEERING JOURNAL,383.
MLA	Ye, Yuwei,et al."POSS-tetraaniline modified graphene for active corrosion protection of epoxy-based organic coating".CHEMICAL ENGINEERING JOURNAL 383(2020).