Preparation and hydrophobicity failure behavior of two kinds of fluorine-containing acrylic polyurethane coatings

Yang, Fei; Zhou, Liqun; Han, Dong Keun; Li, Weiping; Chen, Yi-Chi; Wang, Xianming; Liang, Ning

doi:10.1039/c5ra14617h

Cited by 10 publications

(7 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The absorption band at 1050 cm −1 indicates C-O-C in the formulation. Besides that, the stretching vibrations of -CF 2 group at 1160 cm −1 , -CF 3 group at 1235 cm −1 , 1296 cm −1 were all detected in the FPUA coating [ 9 , 19 , 36 ].…”

Section: Resultsmentioning

confidence: 99%

“…The hydrophobic surface, which is represented by WCA reaching its highest (121°) when the cured coating containing more than 8 phr of HDFDMA. The increment in contact angle for this coating was related to the enrichment of fluorinated structure at the coating surface or polymer surface, as illustrated in Figure 4 [ 9 , 21 , 43 ]. At higher HDFDMA content, the tendency of contact angle to increase became plateau inferring to the fluorine enrichment has reached its maximal value.…”

Section: Resultsmentioning

confidence: 99%

“…Hydrophobicity is one of the surface properties that has been enthusiastically explored by researchers [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 ]. With the water contact angle exceeding 90°, the hydrophobic surface is not only water-repelling but also delivers captivating uses such as anti-fouling, anti-icing, anti-corrosion, and self-cleaning effects [ 11 , 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

UV-LED as a New Emerging Tool for Curable Polyurethane Acrylate Hydrophobic Coating

et al. 2021

View full text Add to dashboard Cite

The elimination of mercury, low energy consumption, and low heat make the ultraviolet light-emitting diode (UV-LED) system emerge as a promising alternative to conventional UV-mercury radiation coating. Hence, a series of hydrophobic coatings based on urethane acrylate oligomer and fluorinated monomer via UV-LED photopolymerisation was designed in this paper. The presence of fluorine component at 1160 cm−1, 1235 cm−1, and 1296 cm−1 was confirmed by Fourier Transform Infra-Red spectroscopy. A considerably high degree C=C conversion (96–98%) and gel fraction (95–93%) verified the application of UV-LED as a new technique in radiation coating. It is well-accepted that fluorinated monomer can change the surface wettability as the water contact angle of the coating evolved from 88.4° to 121.2°, which, in turn, reduced its surface free energy by 70.5%. Hence, the hydrophobicity of the coating was governed by the migration of the fluorine component to the coating surface as validated by scanning electron and atomic force microscopies. However, above 4 phr of fluorinated monomer, the transparency of the cured coating examined by UV-visible spectroscopy experienced approximately a 16% reduction. In summary, the utilisation of UV-LED was a great initiative to develop green aspect in photopolymerisation, particularly in coating technology.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

UV-LED as a New Emerging Tool for Curable Polyurethane Acrylate Hydrophobic Coating

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Typically, omniphobicity is achieved by stabilizing/trapping air between the liquid and the solid surface (also known as Cassie-states or partially-filled states) 15 and preventing wetting transitions to the fully-filled (Wenzel state) 16 . A limitation of current omniphobic surfaces, however, is their reliance on perfluorinated chemicals, 1-4, 7-9, 14, 17-23 which restricts their usage due to degradation under harsh physical and chemical conditions, [24][25][26] cost, and environmental and health concerns. [27][28] Thus, there exists a need for alternative strategies to render conventional materials, such as polyethyleneterepthalate (PET), aluminum, and lowcarbon steels, omniphobic without using perfluorinated compounds.…”

Section: Introductionmentioning

confidence: 99%

Doubly Reentrant Cavities Prevent Catastrophic Wetting Transitions on Intrinsically Wetting Surfaces

Domingues

Arunachalam

Mishra

2017

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Omniphobic surfaces, that is, which repel all known liquids, have proven of value in applications ranging from membrane distillation to underwater drag reduction. A limitation of currently employed omniphobic surfaces is that they rely on perfluorinated coatings, increasing cost and environmental impact and preventing applications in harsh environments. Thus, there is a keen interest in rendering conventional materials, such as plastics, omniphobic by micro/nanotexturing rather than via chemical makeup, with notable success having been achieved for silica surfaces with doubly reentrant micropillars. However, we found a critical limitation of microtextures comprising pillars that they undergo catastrophic wetting transitions (apparent contact angles, θ → 0° from θ > 90°) in the presence of localized physical damages/defects or on immersion in wetting liquids. In response, a doubly reentrant cavity microtexture is introduced, which can prevent catastrophic wetting transitions in the presence of localized structural damage/defects or on immersion in wetting liquids. Remarkably, our silica surfaces with doubly reentrant cavities could exhibit apparent contact angles, θ ≈ 135° for mineral oil, where the intrinsic contact angle, θ ≈ 20°. Further, when immersed in mineral oil or water, doubly reentrant microtextures in silica (θ ≈ 40° for water) were not penetrated even after several days of investigation. Thus, microtextures comprising doubly reentrant cavities might enable applications of conventional materials without chemical modifications, especially in scenarios that are prone to localized damages or immersion in wetting liquids, for example, hydrodynamic drag reduction and membrane distillation.

show abstract

“…It is well known that the properties of coatings are affected by many factors, such as the environment, degree of wetting between the coating and the substrate, chemical or physical effects, surface properties of the substrate, and so on [17,18,19,20,21,22]. Yang et al [23] found that different environments could cause differences in the chemical composition on the surface of the PUA painting film and the surface morphology was thus different. Masson et al [16] also found that basic coating performance features such as the drying speed were highly dependent on the temperature and film thickness.…”

Section: Introductionmentioning

confidence: 99%

Preparation of a Fast Water-Based UV Cured Polyurethane-Acrylate Wood Coating and the Effect of Coating Amount on the Surface Properties of Oak (Quercus alba L.)

Wang

Liu

et al. 2019

Polymers

View full text Add to dashboard Cite

A fast water-based ultraviolet light (UV) curing polyurethane-acrylate (PUA) wood coating was prepared in the laboratory, and applied on oak (Quercus alba L.) at different coating amounts. The PUA wood coating can be fast cured within 22 min, which highly improved the drying speed compared to normal water-based wood coatings (often higher than 35 min). The coating amounts affected the coating properties after curing on oak. With the increase of coating amount, the adhesion, hardness and gloss value of surface increased to different extents. Meanwhile, the surface of sample became smooth gradually because the voids of the oak were filled. Thus, higher coating amount resulted in better coating properties. However, no significant increase of penetration depth was found. During curing, the hydroxyl groups of the wood reacted with the coating. The optimal parameter in this study was the coating amount of 120 g/m2, where the adhesion reached 1 (with 0–5% cross-cut area of flaking along the edges), with the hardness of 2H and the gloss of 92.56°, which met the requirement of Chinese standard GB/T 18103–2013, and could be used for engineered wood flooring.

show abstract

Preparation and hydrophobicity failure behavior of two kinds of fluorine-containing acrylic polyurethane coatings

Abstract: Two kinds of fluorine-containing acrylic copolymers, prepared following an in situ radical polymerization fluorine modification method and a post-polymerization fluorine modification route, respectively, achieved different failure behaviors and hydrophobicities.

Cited by 10 publications

References 25 publications

UV-LED as a New Emerging Tool for Curable Polyurethane Acrylate Hydrophobic Coating

UV-LED as a New Emerging Tool for Curable Polyurethane Acrylate Hydrophobic Coating

Doubly Reentrant Cavities Prevent Catastrophic Wetting Transitions on Intrinsically Wetting Surfaces

Preparation of a Fast Water-Based UV Cured Polyurethane-Acrylate Wood Coating and the Effect of Coating Amount on the Surface Properties of Oak (Quercus alba L.)

Contact Info

Product

Resources

About