Advanced superhydrophobic electroactive fluorinated polyimide and its application in anticorrosion coating

Huang, Tzu-Ling; Yeh, Lu-Chen; Lai, Guan-Hui; Huang, Bi-Sheng; Yang, Ta‐I; Hsu, Sheng-Chieh; Lo, An-Ya; Yeh, Jui‐Ming

doi:10.1080/15435075.2016.1233495

Cited by 31 publications

(16 citation statements)

References 45 publications

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“…Corrosion current density (I corr ) was determined by superimposing a straight line along the linear portion of cathodic or anodic curve and extrapolating it through E corr . Corrosion rate (CR, in mm per year) was calculated using the following equation: 32,33 CR ðmm per yearÞ ¼…”

Section: Characterizationmentioning

confidence: 99%

Advanced anti-corrosion coatings prepared from α-zirconium phosphate/polyurethane nanocomposites

Huang

Lai

et al. 2017

RSC Adv.

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Section: Characterizationmentioning

confidence: 99%

Advanced anti-corrosion coatings prepared from α-zirconium phosphate/polyurethane nanocomposites

Huang

Lai

et al. 2017

RSC Adv.

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“…Meanwhile, new characteristic absorption bands appeared at 1774 cm −1 and 1715 cm −1 of the EIO spectrum, which may be associated with asymmetric and symmetric carbonyl stretching. Moreover, the characteristic band found at 1378 cm −1 and 746 cm −1 was designated as the C-N stretching and deformation of the imide groups, respectively [44,45]. The above information indicates that the EAAO had been effectively converted into the corresponding EIO through the thermal imidization process.…”

Section: Characterization Of Eaao and Eiomentioning

confidence: 93%

“…All the corrosion parameters including corrosion potential (Ecorr), corrosion current density (Icorr), polarization resistance (Rp), corrosion rate (CR), anodic Tafel slope (ba) and cathodic Tafel slope (bc) are summarized in Table 2. Generally, a higher value of Ecorr and Rp, as well as lower values of Icorr and CR, implied better corrosion protection [34,44,52,53]. Figure 5a shows that bare CRS had the lowest Ecorr (−0.89 V) and the highest Icorr (2.52 × 10 −6 A cm −2 ).…”

Section: Potentiodynamic Measurementsmentioning

confidence: 97%

A Novel Electroactive Imide Oligomer and Its Application in Anticorrosion Coating

et al. 2020

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A novel aniline tetramer (AT) capped electroactive imide oligomer (EIO) for metal corrosion protection was successfully synthesized in this study. The chemical structure of the EIO was characterized by liquid chromatography-mass spectrometry and Fourier-transform infrared spectroscopy. Furthermore, the redox behavior of EIO was identified using electrochemical cyclic voltammetry studies. An EIO coated on a cold-rolled steel (CRS) electrode was found to possess superior corrosion resistance to polyimide (PI) on a series of electrochemical corrosion measurements in 3.5 wt.% NaCl solution over an extended period (30 days). The mechanism for the advanced corrosion protection of the PI coating on the CRS electrode could be attributed to the redox catalytic capabilities of the AT units present in the EIO. These capabilities may induce the formation of passive metal oxide layers on the CRS electrode. Scanning electron microscopy and X-ray photoelectron spectroscopy were used to analyze the surface condition of the CRS after the corrosion test. EIO- and PI-coated electrodes were identified by a series of electrochemical measurements, including corrosion potential (Ecorr), polarization resistance (Rp), and corrosion current (Icorr) measurements, along with electrochemical impedance spectroscopy (EIS).

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“…The polymer matrix used in this study is an aromatic polyimide (PI) that shows unique optical properties, good chemical stability, and outstanding thermal and mechanical properties [23,24] as opposed to conventional polymers. Because of these noteworthy properties, PI films have significant potential for advanced applications in the electronic industry [25] as aerospace materials [26], gas separation membranes [27], and anticorrosion materials [28,29]. Graphene-related nanofillers are also promising gas barrier materials for polymer matrices.…”

Section: Introductionmentioning

confidence: 99%

Transparency anticorrosion coatings prepared from alumina-covered graphene oxide/polyimide nanocomposites

Lai¹,

Huang²,

Tseng³

et al. 2019

Express Polym. Lett.

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In this study, a novel alumina-covered graphene oxide/polyimide (AlGO/PI) nanocomposite was developed as an anticorrosion coating material. The hydroxyl groups on GO reacted with aluminum isopropoxide via a sol-gel process to yield AlGO nanosheets. The characterization and structure were confirmed by Fourier transform infrared spectrometry, X-ray photoelectron spectroscopy, field emission scanning electron microscopy, and field emission transmission electron microscopy. Subsequently, GO and AlGO were incorporated into a PI matrix, leading to the formation of GO/PI and AlGO/PI nanocomposites. Well-dispersed AlGO nanosheets in the PI matrix acted as effective additives to enhance the water barrier properties of GO/PI (58 g/(m 2 •day)) and AlGO/PI (43 g/(m 2 •day)) coatings. Most importantly, the resultant AlGO/PI films exhibited excellent optical transparency (>75%) and anticorrosion properties. Electrochemical measurements of corrosion potential, polarization resistance, and corrosion current as well as electrochemical impedance spectroscopy confirmed that the AlGO/PI nanocomposites exhibited better anticorrosion properties than GO/PI nanocomposites. This is likely because the insulating layer of alumina on GO can isolate the charge transfer pathway between GO and the metal substrates, leading to improved anticorrosion behavior.

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Advanced superhydrophobic electroactive fluorinated polyimide and its application in anticorrosion coating

Cited by 31 publications

References 45 publications

Advanced anti-corrosion coatings prepared from α-zirconium phosphate/polyurethane nanocomposites

Advanced anti-corrosion coatings prepared from α-zirconium phosphate/polyurethane nanocomposites

A Novel Electroactive Imide Oligomer and Its Application in Anticorrosion Coating

Transparency anticorrosion coatings prepared from alumina-covered graphene oxide/polyimide nanocomposites

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