Development of photoluminescent powder coatings by UV curing process

Alcón, N.; Tolosa, Aura; Rodriguez, Maria Teresa Raya; Moreno, Camila Gomes

doi:10.1016/j.porgcoat.2009.08.020

Cited by 8 publications

(2 citation statements)

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“…Research on UV-curable coatings has developed at an increasingly rapid rate. Various types of resins have emerged, including urethane acrylates (UAs), unsaturated polyester resins [ 12 , 13 , 14 , 15 ], (meth)acrylic resins [ 16 , 17 ], epoxy resins [ 18 , 19 ], polyamides [ 20 , 21 ], poly (limonene carbonates) and hyperbranched polymers [ 3 , 5 , 21 , 22 , 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

Hydrophobic UV-Curable Powder Clear Coatings: Study on the Synthesis of New Crosslinking Agents Based on Raw Materials Derived from Renewable Sources

et al. 2021

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Methods for the synthesis of urethane acrylates used as new crosslinking agents for hydrophobic UV-curable powder clear coatings were developed. In the synthesis of urethane acrylates, isophorone diisocyanate, glycerin, xylitol, polyethylene glycol and polysiloxane KF-6000, as well as 2-hydroxyethyl acrylate or 2-hydroxyethyl methacrylate, were used. In order to increase the functionality of urethane acrylates, glycerin and xylitol derived from renewable sources were introduced. The chemical structure of the urethane acrylates was verified by IR spectroscopy. UV-curable powder clear coatings were obtained through a combination of urethane acrylates with unsaturated polyester resins. The thermal behavior and crosslinking density were examined using DMA. The obtained coatings were evaluated by performing the following tests: roughness, gloss, scratch resistance, hardness, adhesion to steel and water contact angle. As part of this research, high hydrophobicity and scratch resistance of UV-curable powder clear coatings were developed, which are a VOC-free and economically attractive alternative method for low thermal resistance surface protection, such as for composites, wood and wood-based materials.

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Section: Introductionmentioning

confidence: 99%

Hydrophobic UV-Curable Powder Clear Coatings: Study on the Synthesis of New Crosslinking Agents Based on Raw Materials Derived from Renewable Sources

et al. 2021

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“…Alcon et al developed a photoluminescent UV curable polyester resin, suitable for flat and homogeneous substrate. 11 Wang et al synthesized photoluminescent Si-O-Si/Ti and Si-O-B resin structures by the sol-gel route. 7,12 Despite the high potential of these systems, the sol-gel route is known to be not viable and impractical for large-scale applications.…”

Section: Introductionmentioning

confidence: 99%

Scratch- and wear-resistant photoluminescent silicone epoxy coatings on floor tiles

et al. 2015

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Photoluminescent silicone epoxy resins were prepared by physical dispersion of SrAl2O4:Eu²⁺, Dy³⁺ pigments. The resin was deposited on ceramic tiles for flooring by automatic drawdown and left to harden at ambient conditions. Morphology of the coated tiles was measured by contact gage profilometry and field emission gun scanning electron microscopy. Mechanical response was investigated by pencil and cross-hatch scratch tests; depth-sensing indentation measurements were performed using Vickers and flat punch indenters. Tribological response of the coated tiles was measured by progressive and constant load scratch tests and dry sliding linearly reciprocating ball-on-flat tests, respectively. Intensity of photoluminescent radiations and the corresponding decay time were estimated by digital imaging. The photoluminescent coatings feature high hardness, scratch and wear endurance as well as good clarity. Being the resin designed for spontaneous drying and suitable for easy-to-automate and versatile deposition processes, it is the ideal candidate for the decoration of a large variety of substrates as well as for the repowering and/or retrofitting of previous installations

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