The durability of clear polyurethane coil coatings studied by FTIR peak fitting

Zhang, Ying; Maxted, James; Barber, Asa H.; Lowe, Christopher R.; Smith, R.

doi:10.1016/j.polymdegradstab.2012.12.003

Cited by 65 publications

(32 citation statements)

References 38 publications

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“…Selected FTIR spectral regions for the various foam compositions are presented in Figure . The hydrogen‐bonded urethane C=O stretch (1698 cm −1 ) confirms a polyurethane system (Figure a) . A small amount of hydrogen‐bonded urea can be observed on the urethane C=O shoulder (1647 cm −1 ) due to the reaction of isocyanates with water during the foaming step (Figure a) .…”

Section: Resultsmentioning

confidence: 69%

“…A small amount of hydrogen‐bonded urea can be observed on the urethane C=O shoulder (1647 cm −1 ) due to the reaction of isocyanates with water during the foaming step (Figure a) . The amine, a broad stretch (centered at 3330 cm −1 ), represents a combination of secondary and tertiary amine and is readily observed in all systems (Figure b) . The C–H peaks around 1465 cm −1 indicate a strong presence of methyl groups contributed from TMHDI and IPDI in each foam composition (Figure ) .…”

Section: Resultsmentioning

confidence: 97%

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Effects of Isophorone Diisocyanate on the Thermal and Mechanical Properties of Shape‐Memory Polyurethane Foams

Hasan¹,

Raymond²,

Wilson

et al. 2014

Macro Chemistry & Physics

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Previously developed shape-memory polymer foams display fast actuation in water due to plasticization of the polymer network. The actuation presents itself as a depression in the glass-transition temperature when moving from dry to aqueous conditions; this effect limits the working time of the foam to 10 min when used in a transcatheter embolic device. Reproducible foams are developed by altering the chemical backbone, which can achieve working times of greater than 20 min. This is accomplished by incorporating isophorone diisocyanate into the foam, resulting in increased hydrophobicity, glass transitions, and actuation time. This delayed actuation, when compared with previous systems, allows for more optimal working time in clinical applications.

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Section: Resultsmentioning

confidence: 69%

Section: Resultsmentioning

confidence: 97%

Effects of Isophorone Diisocyanate on the Thermal and Mechanical Properties of Shape‐Memory Polyurethane Foams

Hasan¹,

Raymond²,

Wilson

et al. 2014

Macro Chemistry & Physics

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“…Improvement in primer and PVC stabilization leads to a better product. 211 Exposure in Kuala Lumpur, Malaysia was harsher than that at Vereeniging, South Africa. 205 Radio frequency plasma deposition was used to surface coat polyurethane coil coatings with silica-based protective film.…”

Section: Coil Coated Materialsmentioning

confidence: 92%

“…204 According to the definition of Qualicoat Standard a super durable resin is expected to retain 90% of its original gloss after 1 year exposure in Florida and at least 50% of its original gloss after three years Florida exposure. 211 The depth distribution of a TiO 2 pigment within the polyurethane coil coatings was investigated using step scan phase modulation photoacoustic FTIR. 209 Reflectance spectroscopy was used for determination of changes in PVC coil-coatings during weathering.…”

Section: Coil Coated Materialsmentioning

confidence: 99%

Weathering of Compounded Products

Wypych¹

2013

Handbook of Material Weathering

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“…The thin and sharp peak commonly observed at 765 cm −1 may be explained by the C-N skeleton stretch in HDI trimers with a cyclic structure [27]. As consequence, the IR absorptions occurring at ca.…”

Section: Two Package Solvent-borne Pu (2ksbpu) Activatorsmentioning

confidence: 94%

Polyurethane coatings used in twentieth century outdoor painted sculptures. Part I: comparative study of various systems by means of ATR-FTIR spectroscopy

2017

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Like acrylics and alkyds, polyurethanes (PUs) represent an important class of industrial paints adopted by 20th and 21st artists; primarily by those creating outdoor painted sculptures (OPS). Because PU coatings offer a compromise between aesthetic and performance expectations, unachievable with other types of paints, they are commonly recognized as the most appropriate option for painted artworks intended for an outdoor setting. However, the PU class includes various systems and subgroups possessing very different properties. Through the FTIR-ATR study of 137 PU coating references from the Getty Conservation Institute (GCI) reference collection, this paper outlines the differences and the similarities existing, in terms of the composition, of two package solvent-borne, two package waterborne, one package water-borne and fluoropolymer polyurethanes. The comparison of the obtained FTIR-ATR results allowed determining markers helpful to discriminate specific PU subgroups by means of ATR-FTIR spectroscopy. The goals of this paper are to provide to the conservation professionals a better understanding of the versatility and diversity of PU coatings and to facilitate the identification of the various types initially used by the artists.

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The durability of clear polyurethane coil coatings studied by FTIR peak fitting

Cited by 65 publications

References 38 publications

Effects of Isophorone Diisocyanate on the Thermal and Mechanical Properties of Shape‐Memory Polyurethane Foams

Effects of Isophorone Diisocyanate on the Thermal and Mechanical Properties of Shape‐Memory Polyurethane Foams

Weathering of Compounded Products

Polyurethane coatings used in twentieth century outdoor painted sculptures. Part I: comparative study of various systems by means of ATR-FTIR spectroscopy

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