POSS-modified UV-curable coatings with improved scratch hardness and hydrophobicity

Prządka, Dawid; Marcinkowska, Agnieszka; Andrzejewska, Ewa

doi:10.1016/j.porgcoat.2016.01.011

Cited by 29 publications

(27 citation statements)

References 20 publications

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“…Ammar et al point out that the incorporation ZnO nanoparticles in epoxy resin increases the composite surface roughness and, consequently, the hydrophobicity of the material 26 . Przadka et al also obtained an increase of hydrophobicity using POSS, and they related it with the increase of surface roughness 27 . Regarding the superficial tension, it is important to point out that the physical phenomenon that occurs in the formation of contact angle depends on the surface conditions, such as roughness and presence of impurities, in addition to the air layer that can modify the angle.…”

Section: Contact Anglementioning

confidence: 93%

Evaluation of the Mechanic and Electrochemical Properties of an Epoxy Coating with Addition of Different Polyhedral Oligomeric Silsesquioxanes (POSS) Applied on Substrate of Low Alloy Steel

et al. 2017

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The epoxy resin is one of the matrices most employed in obtaining composites and coatings. Its properties have been modified using materials such as clays and polyhedral oligomeric silsesquioxanes -POSS. The use of POSS in the preparation of thermosetting nanocomposites has been studied in obtaining hybrid materials with higher mechanic and surface properties. The functionality of POSS cage is important, since a thermosetting is formed by a cross-linked structure that can interact at any direction, forming bonds or acting in the interface of the cages inserted. This works aims to evaluate the influence of three POSS (Glycidylisobutyl-POSS, Triglycidylisobutyl-POSS and Glycidyl-POSS) added in epoxy resin, in the mechanic and electrochemical behaviors, when applied on low alloy steel. It was observed an increase in roughness and hydrophobicity. The sample containing Glycidylisobutyl-POSS presented the best results of corrosion resistance. Glycidyl-POSS showed an inefficient dispersion, forming agglomerates, leading to a low electrochemical behavior.

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Section: Contact Anglementioning

confidence: 93%

Evaluation of the Mechanic and Electrochemical Properties of an Epoxy Coating with Addition of Different Polyhedral Oligomeric Silsesquioxanes (POSS) Applied on Substrate of Low Alloy Steel

et al. 2017

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“…Generally, the recorded results correlate with those registered for the joints thermally aged at 82 • C for 192 h. After the 30-day humidity test at 40 • C (95% RH), the samples with A-POSS-based SATs reached markedly higher τ values than the A-POSS-free system (aged at the same conditions; 1.6 MPa); moreover, τ increased with increasing A-POSS concentration and the best mechanical resistance was noted for Al/SAT-POSS-2.5/Al (8.8 MPa, +450%) and Al/SAT-POSS-5/Al (9.1 MPa, +469% vs. aged joints with SAT-0). The A-POSS cages possibly limited migration of water vapor throughout the polymeric layer during storage of the joints at high humidity; the hydrophobic features of POSS were described in [20]. Interestingly, the A-POSS modifier efficiently improved chemical resistance of the joints to the aviation turbine fuel as well (Figure 7).…”

Section: Properties Of Thermally Cured Sats With A-poss-based Epoxyacmentioning

confidence: 96%

Synthesis of Monoacryloxypropyl-POSS-based Hybrid Epoxyacrylate Copolymers and Their Application in Thermally Curable Structural Self-Adhesive Tapes

Kowalczyk

Gziut

2019

Polymers

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New organic-inorganic hybrid copolymers (EA-POSSs) based on butyl acrylate, glycidyl methacylate, hydroxybutyl acrylate, acryloiloxybenzophenone and acryloxypropylheptaisobutyl-POSS (A-POSS) were prepared via free-radical solution polymerization (FRP) and applied as a component of thermally curable structural self-adhesive tapes (SATs). The EA-POSS with 0.25, 0.5 or 1 mol % of A-POSS exhibited significantly higher dynamic viscosity (ca. +104%), Mw (+61%) and polydispersity (+109%; measured using gel permeation chromatography) as well as lower T g value (−16 • C) in relation to the A-POSS-free copolymer (EA-0). Differential scanning calorimetry (DSC) measurements (one glass transition process) confirmed statistic chain structure of the EA-POSS materials. Replacement of EA-0 by the EA-POSS copolymers in a SATs recipe caused simultaneous improvement of their self-adhesive features, i.e., adhesion (+70%), tack (+21%) and cohesion (+1590%). Moreover, the POSS-based copolymers improved the shear strength of thermally cured Al/SAT/Al overlap joints; the best mechanical resistance (before and after accelerated ageing tests) was observed for the sample containing 0.5 mol % of A-POSS (an increment range of 50-294% in relation to the A-POSS-free joints). Thermogravimetric analysis (TGA) revealed markedly improved thermal stability of the A-POSS-based SATs as well.

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“…For PDA@GO-TiO , peaks are clearly observed at 1305 and 1544 cm −1 , which can be assigned to the D and G bands. The peaks at 106 cm −1 , 344 cm −1 , 450 cm −1 , and 582 cm −1 in the PDA@GO-TiO 2 Raman spectrum should be assigned to the E g(1) , B 1g(1) , A 1g + B 1g (2) , and E g(2) mode of TiO 2 , which indicates the successful incorporation of TiO 2 into rGO [41,42]. It is also found that, after function with PDA, shows red shifting of the D band peak from 1356 cm −1 to 1305 cm −1 shows and the G band peak shifts from 1587 cm −1 to 1544 cm −1 .…”

Section: Raman Spectra Analysismentioning

confidence: 99%

“…One of the most cost-effective ways to prevent metal corrosion is the physical barrier coating, which creates an effective barrier between the metal substrate and the corrosive environment [1]. Epoxy resin coatings have been widely been in the coating industry due to these stable chemical properties, excellent electrical insulation rot, low cure shrinkage, high tensile strength and strong adhesion, and as the most effective method to inhibiting corrosion of the metal substrate [2,3]. However, the traditional epoxy resin anticorrosive coatings are typical solvent-based coating systems, which contain a certain proportion of volatile organic compounds (VOCs) that cause health hazards and environmental problems.…”

Section: Introductionmentioning

confidence: 99%

Polydopamine Modified Graphene Oxide-TiO2 Nanofiller for Reinforcing Physical Properties and Anticorrosion Performance of Waterborne Epoxy Coatings

et al. 2019

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Nano-polydopamine-graphene oxide-TiO2 (nano-PDA@GO-TiO2) composites were prepared by dopamine modified graphene oxide (GO) and loaded nano-TiO2 on the surface of GO. The structure and morphology of nano-PDA@GO-TiO2 composites were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Raman, X-ray photoelectron spectroscopy (XPS), Scanning electron microscope (SEM), and Transmission electron microscope (TEM) Results demonstrate that the introduction of dopamine to functionalize the GO could self-polymerize polydopamine (PDA) on the surfaces of the GO and endow abundant chemical groups reduce the GO. The interaction between the GO and nano-TiO2 particles could prevent graphene nanosheets from restacking and nano-TiO2 particles from agglomeration. Nano-PDA@GO-TiO2 composite material was used as the nano-filler, and nano-PDA@GO-TiO2 composites waterborne epoxy resin coatings (PGT/WEP) were prepared by dispersing a different content of nano-PDA@GO-TiO2 composites into waterborne epoxy resin with the help of ultrasonic dispersion and mechanical agitation. The physical properties of PGT/WEP coatings, such as hardness, impact resistance, and adhesion, were tested and the electrochemical performance was evaluated. The results show that dispersing 2% nano-PDA@GO-TiO2 composites in waterborne epoxy resin could significantly improve the physical properties and corrosion resistance of waterborne epoxy resin coating when compared with pure waterborne epoxy coating.

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POSS-modified UV-curable coatings with improved scratch hardness and hydrophobicity

Cited by 29 publications

References 20 publications

Evaluation of the Mechanic and Electrochemical Properties of an Epoxy Coating with Addition of Different Polyhedral Oligomeric Silsesquioxanes (POSS) Applied on Substrate of Low Alloy Steel

Evaluation of the Mechanic and Electrochemical Properties of an Epoxy Coating with Addition of Different Polyhedral Oligomeric Silsesquioxanes (POSS) Applied on Substrate of Low Alloy Steel

Synthesis of Monoacryloxypropyl-POSS-based Hybrid Epoxyacrylate Copolymers and Their Application in Thermally Curable Structural Self-Adhesive Tapes

Polydopamine Modified Graphene Oxide-TiO2 Nanofiller for Reinforcing Physical Properties and Anticorrosion Performance of Waterborne Epoxy Coatings

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