Studies on silicone–acrylic hybrid aqueous dispersions and corresponding silicone–acrylic nanopowders designed for modification of powder coatings and plastics

Kozakiewicz, Janusz; Ofat, Izabela; Trzaskowska, Joanna; Kuczyńska, H.

doi:10.1016/j.porgcoat.2014.01.010

Cited by 10 publications

(6 citation statements)

References 12 publications

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“…Migration of silicone to the coating surface observed for coatings containing silicones was described in the earlier papers, e.g., [32,44,45] and was fully confirmed by XPS also for coatings obtained from SIL-ACR and ACR-SIL hybrid dispersions. In Figure 11 the percentage of Si in the layers close to coating surface as determined by XPS for hybrid SIL-ACR and ACR-SIL dispersions is plotted against distance from the surface.…”

Section: Surface Propertiessupporting

confidence: 76%

“…If fluoroacrylic monomer was used as monomer X [27][28][29][30], the surface hydrophobicity of coatings could be improved even more. It was also proved in our earlier studies [31][32][33] that the application of method (1) to emulsion polymerization of methyl methacrylate in aqueous silicone resin dispersions led to stable "core-shell" silicone-poly(methyl methacrylate) hybrid dispersions which, after drying, produced corresponding "nanopowders" that were later used as very effective impact modifiers for powder coatings.…”

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confidence: 75%

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Studies on Synthesis and Characterization of Aqueous Hybrid Silicone-Acrylic and Acrylic-Silicone Dispersions and Coatings. Part I

et al. 2019

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The objective of the study was to investigate the effect of the method of synthesis on properties of aqueous hybrid silicone-acrylic (SIL-ACR) and acrylic-silicone (ACR-SIL) dispersions. SIL-ACR dispersions were obtained by emulsion polymerization of mixtures of acrylic and styrene monomers (butyl acrylate, styrene, acrylic acid and methacrylamide) of two different compositions in aqueous dispersions of silicone resins synthesized from mixtures of silicone monomers (octamethylcyclotetrasiloxane, vinyltriethoxysilane and methyltriethoxysilane) of two different compositions. ACR-SIL dispersions were obtained by emulsion polymerization of mixtures of the same silicone monomers in aqueous dispersions of acrylic/styrene copolymers synthesized from the same mixtures of acrylic and styrene monomers, so the compositions of ACR and SIL parts in corresponding ACR-SIL and SIL-ACR hybrid dispersions were the same. Examination of the properties of hybrid dispersions (particle size, particle structure, minimum film forming temperature, Tg of dispersion solids) as well as of corresponding coatings (contact angle, water resistance, water vapour permeability, impact resistance, elasticity) and films (tensile strength, elongation at break, % swell in toluene), revealed that they depended on the method of dispersion synthesis that led to different dispersion particle structures and on composition of ACR and SIL part. Generally, coatings produced from hybrid dispersions showed much better properties than coatings made from starting acrylic/styrene copolymer dispersions.

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Section: Surface Propertiessupporting

confidence: 76%

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confidence: 75%

Studies on Synthesis and Characterization of Aqueous Hybrid Silicone-Acrylic and Acrylic-Silicone Dispersions and Coatings. Part I

et al. 2019

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“…Aqueous dispersions (emulsions) of epoxy resins are widely used as thin/thick films for the production of paints and varnishes, as anticorrosion coatings and in the building materials industry [1][2][3][4][5]. This is due to both their high environmental safety compared to those of organic-soluble analogues, and the need to create water-based decorative and protective compositions of a higher quality than those obtained on the basis of synthetic latexes [6][7][8][9]. A significant number of available publications devoted to aqueous dispersions of epoxy resins are predominantly related with fabrication of multifunctional composites [10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Aqueous dispersions of epoxy oligomers: Stability and rheological properties

Кошевар¹,

Žarkov²,

Shkadrecova³

et al. 2021

chemija

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In this study, the stability of the aqueous dispersions of epoxy oligomers was investigated. The following epoxy oligomers with various numbers of epoxy groups were used for the characterization: NPEL 127, NPEL 128, NPEL 134, NPPN 631, EPOXY 520 and DEG-1. A non-ionic surfactant Emulsogen LCN-287 based on alkyl polyethylene glycol ether was used as an emulsifier. The dispersions of epoxy resins were fabricated by changing the content of a non-ionic surfactant (emulsifier) in a range from 2 to 6 wt.%. It was demonstrated that the stability of aqueous emulsions depends not only on the type of resin, but also on the content of the oil phase and the concentration of the emulsifier. The rheological properties of the aqueous dispersions of epoxy oligomers were investigated as well.

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“…Furthermore, the reuse of overspray can result in high overall material utilization. Powder coatings are being used more and more because of their durability, low cost, and low volatile organic compound emissions, which is important for regulatory aspects …”

Section: Introductionmentioning

confidence: 99%

Development of acrylic‐based powder coatings with incorporation of montmorillonite clays

Catarina

Borsoi

Romanzini

et al. 2017

J of Applied Polymer Sci

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Powder coatings have been receiving attention because they are environmentally friendly. They do not contain solvents in their composition, and their components have decorative and corrosion‐protection functions, among many others. However, the presence of polymers in their composition increases the risk of combustion in adverse situations. In this context, this study aims to develop and characterize acrylic‐based powder paints with the addition of 2 wt % and 4 wt % montmorillonite clays (MMT) as Cloisite 30B (MMT‐30B) and Cloisite 15A (MTT‐15A), employed as flame retardants. The characterization of the coatings was carried out by thermogravimetric analysis (TGA), X‐ray diffraction, and scanning electron microscopy. After application of the coatings on carbon steel substrates, flammability tests were performed. The coatings with 2 wt % MMT‐30B showed overall better results, especially in the flammability tests. Flames spread less on these coatings than on the other systems. However, when the surface and bottom temperatures were analyzed by the cone calorimeter test, the samples prepared with 4 wt % MMT‐15A were considered safer to be applied in fire scenarios. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 45031.

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Studies on silicone–acrylic hybrid aqueous dispersions and corresponding silicone–acrylic nanopowders designed for modification of powder coatings and plastics

Cited by 10 publications

References 12 publications

Studies on Synthesis and Characterization of Aqueous Hybrid Silicone-Acrylic and Acrylic-Silicone Dispersions and Coatings. Part I

Studies on Synthesis and Characterization of Aqueous Hybrid Silicone-Acrylic and Acrylic-Silicone Dispersions and Coatings. Part I

Aqueous dispersions of epoxy oligomers: Stability and rheological properties

Development of acrylic‐based powder coatings with incorporation of montmorillonite clays

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