Low friction poly(amide-imide) coatings with silicones as tethered liquids

Ressel, Joerg; Seewald, Oliver; Bremser, Wolfgang; Reicher, Hans-Peter; Strube, Oliver I.

doi:10.1016/j.porgcoat.2018.07.029

Cited by 11 publications

(5 citation statements)

References 5 publications

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“…The FTIR spectra of NH 2 ‐Ce‐MOF, GO‐Ce‐MOF samples are shown in Figure 2. It can be seen that NH 2 ‐Ce‐MOF has various functional groups, illustrated by peaks such as two stretching absorptions of COO − (1375 and 1590 cm −1 ), OH bending absorptions (3407 cm −1 ) 45–47 . Besides, an absorption peak of NH (1125 cm −1 ) can be observed, which was derived from the absorption peaks of Diamino terephthalic acid.…”

Section: Resultsmentioning

confidence: 93%

“…It can be seen that NH 2 -Ce-MOF has various functional groups, illustrated by peaks such as two stretching absorptions of COO À (1375 and 1590 cm À1 ), OH bending absorptions (3407 cm À1 ). [45][46][47] Besides, an absorption peak of N H (1125 cm À1 ) can be observed, which was derived from the absorption peaks of Diamino terephthalic acid. Compared with NH 2 -Ce-MOF (Figure 2a), the new absorption peaks at 1652 cm À1 ( CONH ) were clearly seen for the curve of GO-Ce-MOF (Figure 2b), indicating that the amino group in NH 2 - Ce-MOF successfully reacted with the carboxyl bond on the surface of GO.…”

Section: The Ftir Analysis Of Go-ce-mof Nanocompositementioning

confidence: 97%

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Preparation and anticorrosion properties of GO‐Ce‐MOF nanocomposite coatings

Chen

Yin

et al. 2021

J of Applied Polymer Sci

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Herein, a new strategy for improving epoxy coatings' anti-corrosion performance has been developed, which combined NH 2 -Ce-MOF with graphene oxide (GO) by hydrothermal method. First, the nanocomposite material's morphology and structure (GO-Ce-MOF) were confirmed by Fourier transform infrared, X-ray diffraction, TG, X-ray photoelectron spectroscopy, and scanning electron microscope (SEM) studies. The dispersity of the composite in the epoxy coating was evaluated by SEM and mapping analysis. Meanwhile, the anti-corrosion of as-prepared composite coatings was investigated in detail by the electrochemical impedance spectroscopy (EIS) and the Tafel polarization curve test. The results illustrated that 2.0 wt% GO-Ce-MOF/EP greatly enhanced the composite coating's anti-corrosion performance compared to other coatings. The reasons for the improvement of the anti-corrosion performance of the composite coating are attributed to the following two aspects: On the one hand, the addition of GO can provide a physical barrier to form a labyrinth effect to slow down the invasion of corrosive media into the metal substrate, on the other hand, the modification of GO can GO-Ce-MOF achieve better compatibility and dispersion in epoxy resin.

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Section: Resultsmentioning

confidence: 93%

Section: The Ftir Analysis Of Go-ce-mof Nanocompositementioning

confidence: 97%

Preparation and anticorrosion properties of GO‐Ce‐MOF nanocomposite coatings

Chen

Yin

et al. 2021

J of Applied Polymer Sci

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“…Table 2 ), it becomes evident that the detected F content exceeds the calculated amount in all samples (reference, as well as coat_1 and coat_2 layers). This was explained by the well-known phenomenon of surface rearrangement (or segregation) behavior of low surface energy compounds (e.g., fluorinated components), which are, although covalently bound to a polymer network, preferably exposed to the free surface in a non-polar environment (e.g., air) to minimize the interfacial free energy of the system [ 57 , 58 , 59 ]. Concerning the organosilane coatings of this work, this means that the perfluorinated units of PFOS orientate toward the surface, which is reflected by the increased F concentrations.…”

Section: Resultsmentioning

confidence: 99%

Anti-Adhesive Organosilane Coating Comprising Visibility on Demand

et al. 2022

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There is a wide application field for anti-adhesive and hydrophobic coatings, stretching from self-cleaning surfaces over anti-graffiti and release coatings to demolding aids in the production of polymers. The typical materials for the latter are hard coatings, including TiN, CrN, diamond-like carbon, etc. Alternatively, organosilane coatings based on perfluorinated compounds or molecules with long alkyl side chains can be employed. Although these functional layers are generally required to be invisible, there is a demand for a straightforward approach, which enables the temporary control of successful and homogeneous application as well as abrasion and wear of the coatings during use. For this purpose, a visibility-on-demand property was introduced to an already established anti-adhesive organosilane coating by incorporation of 1,8-naphthalimide-N-propyltriethoxysilane (NIPTES) as a fluorescent marker molecule. While the naphthalimide unit provides blue fluorescence under UV irradiation, the ethoxy groups of NIPTES enable the covalent coupling to the coating as a result of the hydrolysis and condensation reactions. As a consequence, the fluorescent marker molecule NIPTES can simply be added to the coating solution as an additional organosilane component, without the need for changes in the approved deposition procedure. The generated fluorescent anti-adhesive coatings were characterized by contact angle measurements, atomic force microscopy (AFM), as well as by different spectroscopic techniques, including FTIR, UV-Vis, fluorescence and X-ray photoelectron spectroscopy (XPS). In addition, the on-demand control function provided by the introduced fluorescence properties was evaluated along an injection molding process.

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“…Copolymers of poly(amide-imide) and PDMS were also applied for the reduction of friction between polymer layers in enameled copper wires. 56 Icephobic surfaces were created through incorporation of PDMS-poly(ethylene glycol) (PEG) copolymers in which surface segregated PEG moieties were responsible for liquid-like behavior. 57 A 1 wt% addition of PDMS-PEG to a Sylgard 184based silicone coating provided a threefold reduction in the strength of ice adhesion.…”

Section: Liquid-like Surfacesmentioning

confidence: 99%

Covalently attached liquids as protective coatings

Melde

Malanoski

Moore

et al. 2020

Polymer International

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Covalently attached liquids provide a liquid-liquid surface interaction for contacting contaminants, typically achieved through use of a polydimethylsiloxane linear polymer bound to the surface at one end. The attached dimethylsiloxane polymer chain retains liquid-like mobility through bending and rotational motions, distinguishing the coatings from those formed by crosslinked polydimethylsiloxane or branched polymer chains. Here, covalently attached liquids are reviewed and their potential for application as topcoat treatments is discussed. This review focuses on a new use scenario: prevention of chemical contamination. When allowed to age in place, chemical contaminants tend to penetrate into painted surfaces. Standard decontamination processes can fail to remove the chemicals within the paint layer, resulting in secondary exposure hazards when environmental conditions change. Covalent liquid coatings provide repellency and shedding behaviors. This review highlights the failure of typical wetting evaluations in predicting performance for the new application as well as the potential of the coatings in enhancing chemical resistance for painted surfaces. Potential methods for further improvements are also discussed.

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Low friction poly(amide-imide) coatings with silicones as tethered liquids

Cited by 11 publications

References 5 publications

Preparation and anticorrosion properties of GO‐Ce‐MOF nanocomposite coatings

Preparation and anticorrosion properties of GO‐Ce‐MOF nanocomposite coatings

Anti-Adhesive Organosilane Coating Comprising Visibility on Demand

Covalently attached liquids as protective coatings

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