Fabrication of h-BN-rGO@PDA nanohybrids for composite coatings with enhanced anticorrosion performance
Fabrication of h-BN-rGO@PDA nanohybrids for composite coatings with enhanced anticorrosion performance
复制标题
用于增强防腐性能的复合涂层的 h-BN-rGO@PDA 纳米杂化物的制备
DOI：
10.1016/j.porgcoat.2019.01.059
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发表时间：
2019-05-01
影响因子：
6.6
通讯作者：
Zhang, Xinya
中科院分区：
文献类型：
--
作者：
Huang, Haowei;Huang, Xiaofeng;Zhang, Xinya
Inspired by mussels' universal adhesive ability to various substrates, polydopamine (PDA) was used to bind graphene oxide (GO) and hexagonal boron nitride (h-BN) together to fabricate h-BN-rGO@PDA nanohybrids. The as-prepared h-BN-rGO@PDA nanohybrids were served as anticorrosive nanofillers for polyvinylbutyral (PVB) coatings on mild steel. The structure of h-BN-rGO@PDA nanohybrids were characterized by SEM, XRD, FT-IR, UV-vis and Raman spectroscopies. Electrochemical corrosion tests were conducted to examine the anticorrosion properties of h-BN-rGO@PDA/PVB composite coatings. The results show that the stacked h-BN nanosheets are exfoliated by GO. And PDA is successfully grafted onto the surface of h-BN-rGO@PDA and simultaneously reduced GO into rGO. The h-BN-rGO@PDA nanohybrids are homogeneously distributed in the PVB matrix. When the mass ratio of GO to h-BN in h-BN-rGO@PDA is 1:1, the as-prepared h-BN-rGO@PDA possesses effective aspect ratio and thus its PVB composite coating obtains the optimal anticorrosion performance with 2 orders of magnitude higher than pure PVB.
