Polyurethane paint adhesion improvement on aluminium alloy treated by plasma jet and dielectric barrier discharge

Mui, Taiana She Mir; Silva, L.L.G.; Prysiazhnyi, Vadym; Kostov, K. G.

doi:10.1080/01694243.2015.1099863

Cited by 21 publications

(7 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The central role of plasma is surface activation and cleaning. In addition, studies have shown that thermally assisted plasma treatment of PTFE [210,211] can promote the formation of carbon-carbon crosslinks on the surface of PTFE and the etching of weak boundary layers, which greatly improves the adhesion strength of PTFE. Hamdi et al [212] found that when primer coating and UV/ozone radiation were applied, the adhesion of acrylonitrile butadiene styrene increased.…”

Section: Frictionmentioning

confidence: 99%

A review on tribology of polymer composite coatings

et al. 2020

View full text Add to dashboard Cite

Self-lubricating polymer composite coatings, with tailorable tribological and mechanical properties, have been widely employed on mechanical parts to reduce friction and wear, which saves energy and improves the overall performance for applications such as aerospace satellite parts, shafts, gears, and bushings. The addition of functional fillers can overcome the limitations of single-polymer coatings and extend the service life of the coatings by providing a combination of low friction, high wear resistance, high load bearing, high temperature resistance, and high adhesion. This paper compares the heat resistance, and the tribological and mechanical properties of common polymer matrices, as well as the categories of functional fillers that improve the coating performance. Applicable scopes, process parameters, advantages, and limitations of the preparation methods of polymer coatings are discussed in detail. The tribological properties of the composite coatings with different matrices and fillers are compared, and the lubrication mechanisms are analyzed. Fillers reduce friction by promoting the formation of transfer films or liquid shear films. Improvement of the mechanical properties of the composite coatings with fillers of different morphologies is described in terms of strengthening and toughening mechanisms, including a stress transfer mechanism, shear yielding, crack bridging, and interfacial debonding. The test and enhancement methods for the adhesion properties between the coating and substrate are discussed. The coating adhesion can be enhanced through mechanical treatment, chemical treatment, and energy treatment of the substrate. Finally, we propose the design strategies for high-performance polymer composite coating systems adapted to specific operating conditions, and the limitations of current polymer composite coating research are identified.

show abstract

Section: Frictionmentioning

confidence: 99%

A review on tribology of polymer composite coatings

et al. 2020

View full text Add to dashboard Cite

show abstract

“…60 Moreover, improvements in adhesion has been shown to increase PSC stability. 61 To probe the differences of adhesion of NG-treated films, an adhesive tape test, which is widely used to assess the performance of coatings 62,63 was applied to our perovskite films. This test gives a semiquantitative measure of the adhesion of organic coatings to substrates 50 and is depicted in Figure 10A.…”

Section: Resultsmentioning

confidence: 99%

Improving the Efficiency, Stability, and Adhesion of Perovskite Solar Cells Using Nanogel Additive Engineering

Altujjar

Mokhtar

Chen

et al. 2021

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Additive engineering has been applied widely to improve the efficiency and/or stability of perovskite solar cells (PSCs). Most additives used to date are difficult to locate within PSCs as they are small molecules or linear polymers. In this work, we introduce, for the first time, carboxylic acid-functionalized nanogels (NGs) as additives for PSCs. NGs are swellable sub-100 nm gel particles. The NGs consist of poly(2-(2-methoxyethoxy) ethyl methacrylate)-co-methacrylic acid-co-ethylenegylcol dimethacrylate (PMEO 2 MA-MAA-EGD) particles prepared by a scalable synthesis, which have a diameter of 40 nm. They are visualized in the perovskite films using SEM and are located at the grain boundaries. X-ray photoelectron and FTIR spectroscopy reveal that the NGs coordinate with Pb 2+ via the −COOH groups. Including the NGs within the PSCs increased the grain size, decreased nonradiative recombination, and increased the power conversion efficiency (PCE) to 20.20%. The NGs also greatly increase perovskite stability to ambient storage, elevated temperature, and humidity. The best system maintained more than 80% of its original PCE after 180 days of storage under ambient conditions. Tensile cross-cut tape adhesion tests are used to assess perovskite film mechanical integrity. The NGs increased both the adhesion of the perovskite to the substrate and the mechanical stability. This study demonstrates that NGs are an attractive alternative to molecularly dispersed additives for providing performance benefits to PSCs. Our study indicates that the NGs act as a passivator, stabilizer, cross-linker, and adhesion promoter.

show abstract

“…Oxygen surface cleaning and oxidation also play key roles in the increased hydrophilicity of the treated surfaces. Similarly, surface cleaning and activation are responsible for reducing surface contact angles on aluminum exposed to an atmospheric plasma from 87º to 8º 13 .…”

Section: Resultsmentioning

confidence: 99%

Plasma Treatment of Crosslinked Polyethylene Tubes for Improved Adhesion of Water-based Paints

et al. 2018

View full text Add to dashboard Cite

Cold plasmas fed trichloromethane-argon mixtures were used to treat cross-linked polyethylene (PE) to improve the adhesion of water-based paint. The effects of the plasma treatment undertaken at different percentages of CHCl 3 in the plasma feed, C Cl , were investigated using Infrared Spectroscopy in Diffuse Reflection (DR) mode, Scanning Electron Microscopy (SEM), Energy Dispersive X-ray Spectroscopy (EDS), X-ray Photoelectron Spectroscopy (XPS), goniometry for surface contact angle measurements, profilometry for roughness measurements, and paint adhesion tests. All the treatments modify the surfaces by introducing chlorine. Oxygen is present in the bulk and on the surfaces of the treated and untreated material. The treatments do not alter the bulk, but tend to increase the surface roughness and contact angle. When CHCl 3 is present in the plasma subsequent paint adhesion is improved from a very poor classification of 4 to an excellent classification of 0 (assessed according to the appropriate Brazilian standards (BS EN ISO 2409:2007 and BS 3900-E6:2007A)). Surface roughness is not increased at low C Cl but improved paint adhesion occurs for all C Cl > 0. Although the causes of the improved paint adhesion with the plasma treatment are unclear, they may be related to the plasma activation of unsaturated carbon and oxygen functionalities.

show abstract

Polyurethane paint adhesion improvement on aluminium alloy treated by plasma jet and dielectric barrier discharge

Cited by 21 publications

References 26 publications

A review on tribology of polymer composite coatings

A review on tribology of polymer composite coatings

Improving the Efficiency, Stability, and Adhesion of Perovskite Solar Cells Using Nanogel Additive Engineering

Plasma Treatment of Crosslinked Polyethylene Tubes for Improved Adhesion of Water-based Paints

Contact Info

Product

Resources

About