Preparation of nanocoatings in the presence of precipitated CaCO3 fillers by UV-curing

Izgin, Oner; Aydın, Meral; Arsu, Nergis

doi:10.1016/j.porgcoat.2012.10.014

Cited by 11 publications

(2 citation statements)

References 17 publications

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“…34 Its low erosion resistivity and adhesion to the substrate can be improved by the induction of inorganic NPs. [35][36][37][38][39][40][41][42][43][44][45] As shown in Figure 1, wear resistance of composites will be reduced by introducing the NPs in the EP matrix regardless of the applied nano-fillers. Note that the smaller the particles, the less the wear resistance.…”

Section: Polymer Matrix Of Coatingsmentioning

confidence: 99%

Epoxy/polyurethane nanocomposite coatings for anti-erosion/wear applications: A review

Bahramnia

Semnani

Habibolahzadeh

et al. 2020

Journal of Composite Materials

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Offshore pipelines are vulnerable against erosion/wear deterioration mechanisms that can be controlled through the use of proper surface coatings, such as polymer matrix nano-composite (PMNC) coatings that are well-known for their ease of production, availability and applicability. Epoxy, as a versatile rigid and brittle resin and polyurethane with proper chemical/mechanical properties, are potential candidates to make the matrix of these composites. A combination of these polymers can also enhance the mechanical behaviors, glass transition temperature and flexibility. In addition, the desired coating characteristics, such as adhesion to metal substrate, mechanical properties, erosion/wear resistivity and UV absorbance, can be further improved through the addition of appropriate nanoparticles within the polymer matrix. Especially, nanoparticles can improve the erosion/wear resistance of polymers because of establishing high strength bonds between the polymer chains and the reinforcements besides enhancing other required properties. The present work is a review on PMNC coatings that contain epoxy, polyurethane or EP/polyurethane as a polymer matrix along with the details of the nanoparticle reinforcements, such as alumina, silica, titanium oxide, zinc oxide, clay and carbon-based materials. The effect of these nanoparticles on the properties of composite coatings has also been investigated.

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Section: Polymer Matrix Of Coatingsmentioning

confidence: 99%

Epoxy/polyurethane nanocomposite coatings for anti-erosion/wear applications: A review

Bahramnia

Semnani

Habibolahzadeh

et al. 2020

Journal of Composite Materials

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“…de‐agglomeration and long‐term stability of nanosuspensions. The first problem has been considerably addressed by using proper liquid medium and process such as probe‐sonication for optimum time by few researchers . Other issue of long‐term stability of nanosuspensions is not adequately addressed yet, and this could be a reason for non‐successful commercialisation of such oils with suspended NPs.…”

Section: Introductionmentioning

confidence: 99%

Effect of dispersant on nano‐PTFE: Striking the balance between stability and tribo‐performance

Dubey

Bijwe

Ramakumar

2018

Lubrication Science

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Nanoparticles (NPs) of PTFE (polytetrafluoroethylene) in suspension formwere reported as very efficient extreme pressure (EP) additive in 150 N API Group II oil in our earlier work. The less stability of a nanosuspension due to agglomeration of NPs beyond 3 wt%, however, was a major issue, which needed to be addressed for its possible industrial exploitation in lubricants.Using another additive, eg polyisobutylene succinimide (PIBSI), as a dispersant appeared to be a plausible solution. Its inclusion (1 wt%) increased the stability of the oil by a factor of 4. It was necessary to investigate, however, whether it influenced other properties synergistically or antagonistically. The present paper highlights the positive and negative aspects of inclusion of PIBSI on the tribo-performance (EP and anti-wear) of the nano-PTFE-based oils. A series of nano-PTFE oils (1%-6%) stabilised with PIBSI (1%) were developed and evaluated for EP and anti-wear performance. The PIBSI-PTFE combination clearly showed antagonistic behaviour due to competition for film formation on the surfaces. However, with an increase in concentration of NPs, the film formation mechanism was dominated by them. Scanning electron microscopy, atomic force microscopy, and X-ray photoelectron spectroscopy were used for the examination of the topography and surface chemistry of the protective films formed on the steel specimens. KEYWORDS 4-ball tester, nanolubricant, nano-PTFE in oil, PIBSI dispersant, surface analysis, weld load

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Influence of CaCO₃ on photocrosslinking and properties of UV‐cured coatings based on an epoxy diacrylate resin and hexanediol diacrylate

Hung

Hien

2019

Vietnam Journal of Chemistry

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Effects of CaCO3 content on photocrosslinking and properties of UV‐curable coatings based on epoxy diacrylate resin (EDA), hexanediol diacrylate (HDDA) and photoinitiator I.184 have been studied. It was found that in investigated coatings with the weight ratio EDA/HDDA/I.184 = 50/50/3, CaCO3 content in the range of 10‐40 % provided fine and smooth films in used substrates. The presence of CaCO3 significantly reduced conversion of acrylate groups and quality of the UV‐cured coatings in comparison with the neat one. The increase of CaCO3 content slowed down the photocrosslinking process and inconsiderably affected to properties of investigated coatings in its range of 10‐20 %, but led to obvious decrease of their impact resistance and gloss in its further augment up to 40 %. Coating containing optimal CaCO3 content of 20 % from technical and economical points of view was determined to have gel fraction, relative hardness and gloss of 60o of 90 %; 0.94 %; 92.3 % after 2.4s of UV‐exposure, respectively.

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Preparation of nanocoatings in the presence of precipitated CaCO3 fillers by UV-curing

Cited by 11 publications

References 17 publications

Epoxy/polyurethane nanocomposite coatings for anti-erosion/wear applications: A review

Epoxy/polyurethane nanocomposite coatings for anti-erosion/wear applications: A review

Effect of dispersant on nano‐PTFE: Striking the balance between stability and tribo‐performance

Influence of CaCO₃ on photocrosslinking and properties of UV‐cured coatings based on an epoxy diacrylate resin and hexanediol diacrylate

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Preparation of nanocoatings in the presence of precipitated CaCO3 fillers by UV-curing

Cited by 11 publications

References 17 publications

Epoxy/polyurethane nanocomposite coatings for anti-erosion/wear applications: A review

Epoxy/polyurethane nanocomposite coatings for anti-erosion/wear applications: A review

Effect of dispersant on nano‐PTFE: Striking the balance between stability and tribo‐performance

Influence of CaCO3 on photocrosslinking and properties of UV‐cured coatings based on an epoxy diacrylate resin and hexanediol diacrylate

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Product

Resources

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Influence of CaCO₃ on photocrosslinking and properties of UV‐cured coatings based on an epoxy diacrylate resin and hexanediol diacrylate