UV curing kinetics and properties of polyurethane acrylate/multi-walled carbon nanotube coatings

Ha, Heonjoo; Kim, Sung Chul; Ha, Ki Ryong

doi:10.1007/s13233-010-0705-8

Cited by 19 publications

(7 citation statements)

References 19 publications

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“…Although unfilled polyurethane coats usually exhibit good thermal, mechanical [2] and electrostatic properties (especially in the case of ionomeric PUR) [3], the introduction of carbon nanoparticles significantly improves these features and sometimes allows the retention of transparency at a high level of ca. 80 % [4][5][6][7][8][9]. Polyurethane compositions filled with CNT, GNP or GN are described in the literature but they are generally applied as cast films.…”

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confidence: 99%

Antistatic polyurethane coats with hybrid carbon nanofillers

2014

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Thermoplastic coats based on commercial aqueous dispersions of polyurethane and carbon nanofillers (graphite nanoplatelets and/or carbon nanotubes) were prepared and analyzed. The surface resistivity of the samples was in the range of 10 6 -10 8 W (<1 wt part/100 wt parts of dry coat of carbon nanofillers). Incorporation of carbon nanofillers into coating systems improves the hardness and thermal resistance of dry coats whereas their glass transition temperature is unaffected.

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confidence: 99%

Antistatic polyurethane coats with hybrid carbon nanofillers

2014

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“…However, in the case of nanocomposites, the fillers are in the form of nano dimensions where we can retard some properties by using a very small amount of nanoparticles. Currently, adding appropriate inorganic fillers, such as, nanoclay, SiO 2 , TiO 2 , ZnO, Al 2 O 3 , CNF, CNT, and graphene oxides [6][7][8][9][10][11][12] into organic coatings can improve the corrosion resistance as well as mechanical properties without disturbing key properties. This combination of size and strength gives significant reinforcing potential and acts as a strong candidate for respective applications.…”

Section: Introductionmentioning

confidence: 99%

Development of highly transparent UV‐curable nylon 6 nanofiber‐reinforced polyurethane acrylate nanocomposite coatings for pre‐coated metals

Gavande

Lee

2021

J of Applied Polymer Sci

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The aim of this study is the development of the UV-curable polyurethane acrylate-based transparent nanocomposite by using electrospun nylon 6 nanofibers as reinforcement. To accomplish the perfect embedment of nylon 6 nanofibers, over-coating is the leading advantage on account of the ultrafast wetting and chemical interaction with the UV-curable PUA matrix system. The remarkable properties of nylon 6 nanofibers offer the use of a very tiny amount of nanofibers as reinforcement in developing nanocomposites, which allowed a significant improvement of the mechanical properties. We developed optically transparent and flexible nanocomposite films and coatings based on casting, electrospinning, and UV-curing. The reinforcement of nanofibers in the nanocomposites maintains 89%-93% optical transmittance in the visible light range with remarkable enhancement of the tensile strength by 85% for 240 min nanofiber deposition in nanocomposite films. The annexed results generated much consideration and proved that the embedment of nylon 6 nanofibers leads to a wide range of applications for pre-coated metals. The morphologies of the nanofibers and properties of the thin film composites were also investigated. The potential utilization of nanofibers as a reinforcement and the fabrication of a nanocomposite along with its characterization comparably to the UV-cured polyurethane acrylate film are also discussed.

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“…In this study, we utilize dynamic rheology to investigate the systematic effects of two different ZNPs, one reactive and one passive, at various loading levels of up to 85 wt % (∼52 vol %) and at different irradiation intensities with respect to the cross-linking behavior of solvent-swollen, UV-curable PDMS nanocomposites. The UV cross-linking behavior of polymers has been previously interrogated through the use of analytical methods such as photo-DSC − and infrared spectroscopy. − Although both techniques can afford valuable insight into the thermal and chemical nature of the cross-linking process, they do not explicitly provide information regarding structure–property development as the systems undergo UV cross-linking. Dynamic rheology constitutes an alternative tool by which to probe the evolution of microstructure as it proceeds along a UV-induced reaction coordinate, as well as evaluate the final material properties. − Recent studies have employed dynamic rheology to discern the effects of nanofillers on UV-induced cross-linking in polymer nanocomposites for various applications, ranging from inkjet printer ink to dental materials .…”

Section: Introductionmentioning

confidence: 99%

UV-Curable Polymer Nanocomposites Based on Poly(dimethylsiloxane) and Zirconia Nanoparticles: Reactive versus Passive Nanofillers

Corder

Tilly

Ingram

et al. 2019

ACS Appl. Polym. Mater.

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As the need for high-refractive-index materials escalates to meet the growing demands for antireflective coatings and various photonic devices with robust mechanical properties, elastomeric polymer nanocomposites containing a high loading level of zirconia nanoparticles afford tremendous promise. In this study, the interactions between two functionalized zirconia nanoparticles, one reactive and the other passive, with a short-chain, UV-curable poly(dimethylsiloxane) in solvent are systematically examined by dynamic rheology. The effects of surface functionality, as well as UV light intensity and nanoparticle loading, on the cross-linking behavior are elucidated, and both filled systems are observed to form cross-linked networks at loading levels of up to 85 wt % zirconia. The time required to achieve dynamic modulus crossover (indicating network formation) exhibits a power-law dependence on the UV light intensity for both systems at all zirconia contents. At high loading levels of the passive nanofiller (75 wt % zirconia), the resulting films appear opaque, possessing significantly higher turbidity than those containing reactive nanoparticles, which conversely yield films with low turbidity and high optical clarity at loading levels as high as 80 wt % zirconia. Reactive zirconia is more strongly incorporated into the polymer network than passive zirconia, as evidenced by values of the ultimate gel moduli, zirconia leaching from solvent-swelled films, and the topologies of cross-fractured surfaces.

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UV curing kinetics and properties of polyurethane acrylate/multi-walled carbon nanotube coatings

Cited by 19 publications

References 19 publications

Antistatic polyurethane coats with hybrid carbon nanofillers

Antistatic polyurethane coats with hybrid carbon nanofillers

Development of highly transparent UV‐curable nylon 6 nanofiber‐reinforced polyurethane acrylate nanocomposite coatings for pre‐coated metals

UV-Curable Polymer Nanocomposites Based on Poly(dimethylsiloxane) and Zirconia Nanoparticles: Reactive versus Passive Nanofillers

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