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MODAFLOW NSR 100, a novel nanosilica additive for excellent scratch resistance / M. Goedegebuure in SURFACE COATINGS INTERNATIONAL, Vol. 104.3 (05-06/2021)
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Titre : MODAFLOW NSR 100, a novel nanosilica additive for excellent scratch resistance Type de document : texte imprimé Auteurs : M. Goedegebuure, Auteur ; M. P. E. Benjert, Auteur ; F. Fallani, Auteur ; E. de Wolf, Auteur Année de publication : 2021 Article en page(s) : p. 194-199 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Autobus -- Peinture
Essais de résilience
Essais dynamiques
Nanoparticules
Polyacryliques
Polyesters
Résistance à l'abrasion
Revêtements -- Additifs:Peinture -- Additifs
SiliceLa silice est la forme naturelle du dioxyde de silicium (SiO2) qui entre dans la composition de nombreux minéraux.
La silice existe à l'état libre sous différentes formes cristallines ou amorphes et à l'état combiné dans les silicates, les groupes SiO2 étant alors liés à d'autres atomes (Al : Aluminium, Fe : Fer, Mg : Magnésium, Ca : Calcium, Na : Sodium, K : Potassium...).
Les silicates sont les constituants principaux du manteau et de l'écorce terrestre. La silice libre est également très abondante dans la nature, sous forme de quartz, de calcédoine et de terre de diatomée. La silice représente 60,6 % de la masse de la croûte terrestre continentale.Index. décimale : 667.9 Revêtements et enduits Résumé : While visual appearance represents one of the most important criteria when buying a car, an item of furniture or other life style object, surface robustness makes all the difference when it cornes to daily use, such as washing your car or polishing your home furniture.
High gloss appearance of automotive coatings, in fact, can be affected by micro-scratches, which are invisible to the naked eye, but result in a substantial loss of gloss because of a change in reflection of light (scattering), particularly visible on dark colours (basecoats) in the sunlight. Such scratches occur for instance because of (automatic) carwashes and are mainly due to dirt particles, not so much to the bristle hairs. The same dirt particles can also scratch the coating when driving and/or during harsh weather conditions, causing even more damage (wet vs. dry, or mar, scratching). Definitely, scratch resistance is a very important paint performance parameter for automotive coatings.
To improve the scratch and mar resistance properties of automotive, refinish and high-end industrial coatings, allnex has developed MODAFLOW® NSR 100, a nanosilica-based anti-scratch additive, compatible with high bake 1K and 2K paints as well as Fast Cure room temperature curing 2K isocyanate paints. MODAFLOW® NSR 100 offers best-in-class scratch and mar resistance at low dosage without affecting appearance, giving fully transparent (no haze) clearcoats, unlike other hard nanoparticle-based additives, which can often negatively affect coating appearance, causing lower gloss, increased haze and reduced levelling. MODAFLOW® NSR 100 is supplied as a 35% solution and has excellent compatibility with a broad range of acrylics and polyesters.Note de contenu : - Working principle
- MODAFLOW NSR 100 in 1K automotive OEM clearcoat
- MODAFLOW NSR 100 in 2K automotive OEM clearcoat
- MODAFLOW NSR 100 in fast cure-based 2K vehicle refinish clearcoat
- Fig. 1 : TEM micrograph showing enrichment of MODAFLOW NSR 100 at the coating-air interface
- Fig. 2 : Crockmeter
- Fig. 3 : Carwash tester
- Fig. 4 : Dry scratch resistance results (crockmeter) of 1K clearcoat reference without nanosilica vs. 1K clearcoat with MODAFLOW NSR 100
- Fig. 5 : Carwash resistance results of 1K clearcoat reference without nanosilica vs. 1K clearcoat with MODAFLOW NSR 100
- Fig. 6 : Wavescan results of 1K clearcoat reference without nanosilica vs. 1K clearcoat with MODAFLOW NSR 100 (magenta)
- Fig. 7 : Dry scratch resistance results (crockmeter) of 2K clearcoat reference without nanosilica vs. 2K clearcoat with MODAFLOW® NSR 100
- Fig. 8 : Wavescan results of 2K clearcoat reference without nanosilica vs. 2K clearcoat with MODAFLOW® NSR 100
- Fig. 9 : Dry scratch resistance (crockmeter) of formulations based on SETALUX® 1915 BA-75 (left) and SETALUX FC 1922 BA-75 (right) with and without MODAFLOW' NSR 100
- Fig. 10 : Picture of coated panels after crock test : Clearcoat based on SETALUX FC 1922 BA-75 without nanosilica and same clearcoat with MODAFLOW NSR 100
- Fig. 11 : Isocyanate conversion at room temperature, measured by Infrared Spectroscopy : Formulation based on SETALUX® FC 1922 BA-75 and on
SETALUX® 1915 BA-75 (both without nanosilica)
- Fig. 12 : Spider diagram summarising the advantages and special features of MODAFLOW° NSR 100 (properties improve from inside to outside of the hexagon)
- Table 1 : Performances of 1K clearcoats based on SETALUX® 1760 VB-64, with and without MODAFLOW NSR 100
- Table 2 : Performances of 2K clearcoats based on SETALUX 1767 VV-65, with and without MODAFLOW NSR 100
- Table 3 : Performances of 2K clearcoats based on SETALUX FC 1922 BA-75, with and withoutEn ligne : https://drive.google.com/file/d/1bRtUqErwpj4t4NUD-5pLXr9g72T7UeV1/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36001
in SURFACE COATINGS INTERNATIONAL > Vol. 104.3 (05-06/2021) . - p. 194-199[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22826 - Périodique Bibliothèque principale Documentaires Disponible 22906 - Périodique Bibliothèque principale Documentaires Disponible Morphology control in water-based biorenewable binders for decorative paints / Tijs Nabuurs in SURFACE COATINGS INTERNATIONAL, Vol. 104.3 (05-06/2021)
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Titre : Morphology control in water-based biorenewable binders for decorative paints Type de document : texte imprimé Auteurs : Tijs Nabuurs, Auteur ; Maud Kastelijn, Auteur Année de publication : 2021 Article en page(s) : p. 206-212 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : acrylique, Acide L'acide acrylique ou acide acroléïque ou acide prop-2-énoïque est un composé organique de formule brute C3H4O2 et de formule semi-développée CH2=CHCOOH. C'est un acide carboxylique et un alcène vinylique, et se présente comme un liquide incolore à l'odeur âcre.
L'acide acrylique et ses esters, les acrylates, sont utilisés dans la fabrication de matières plastiques, dans les peintures acryliques et dans divers autres polyacryliques qui ont de multiples usages.
Bilan des émissions de gaz à effets de serre
Biomatériaux
Copolymères
Enrobage (technologie)
Formulation (Génie chimique)
Liants en phase aqueuse
Morphologie (matériaux)
Résistance à l'humidité:Résistance à l'eau
Revêtements -- Propriétés mécaniques
Revêtements décoratifs:Peinture décorative
Revêtements organiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : There is a growing need for more sustainable coatings, where applying biobased raw materials is one of the important requirements. In this paper, the process of developing a biobased binder with a very interesting combination of mechanical properties, excellent water resistance and water absorption is described. Achieving a heterogenous particle morphology proved to be essential for achieving a good set of mechanical properties in these coatings. Effective phase separation between very - and equally - hydrophobic copolymer hard and soft domains can be realised by using significantly different acid concentrations in the two phases. The use of 1% acrylic acid in the soft phase and 5% in the high Tg phase resulted in a copolymer emulsion, which when cast into a film gave a film morphology of a soft matrix with high Tg protrusions. Applying this finding in an emulsion polymer containing 2-octyl acrylate and isobornyl methacrylate as the prime biobased monomers, resulted in a copolymer emulsion with a biobased content of 30%, based on 14C concentration, and a solids content of 49%. Surface hardness and blocking resistance were significantly increased, while the excellent elongation at break was not negatively compromised. Due to the more hydrophobic composition, the water resistance and water absorption properties were significantly better than those of the fossil fuel-based reference. The carbon footprint (CFP) of the thus-formed biobased resin is 17.2% lower than the fossil fuel-based reference, when compared conservatively, not considering the higher solid content of the biobased version. Note de contenu : - Table 1 : Optional biobased monomers
- Table 2 : Phase specifications of the multi-domain particle morphology
- Table 3 : Biobased monomers used in multiphase copolymer emulsions, where in all experiments both phases contain 5% of acrylic acid (AA)
- Table 4 : Coating properties of biobased copolymer emulsions described in Table 3, in a clear formulation
- Table 5 : Coating properties of biobased copolymer emusions described in Table 3, in a clear formulation
- Table 6 : Coating properties of biobased copolymer emulsions containing 5% acrylic acid in the high Tg phase and 1% acrylic acid (EM7) and 5% acrylic acid (EM4) in the low Tg phase
- Table 7 : Carbon footprint results of the biobased copolymer emulsion compared with those of the fossil fuel-based reference in kg CO2 eq/kg emulsionEn ligne : https://drive.google.com/file/d/1NYhW6p4L1W54V8a_SiV8CZz4tsEXr8tr/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36002
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Code-barres Cote Support Localisation Section Disponibilité 22826 - Périodique Bibliothèque principale Documentaires Disponible 22906 - Périodique Bibliothèque principale Documentaires Disponible The future of solvents in sustainable coatings / James Sherwood in SURFACE COATINGS INTERNATIONAL, Vol. 104.3 (05-06/2021)
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Titre : The future of solvents in sustainable coatings Type de document : texte imprimé Auteurs : James Sherwood, Auteur ; Rob McElroy, Auteur Année de publication : 2021 Article en page(s) : p. 220-224 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chimie écologique
Revêtements -- Aspect de l'environnement
Solvants -- Aspect de l'environnement
Solvants écologiquesIndex. décimale : 667.9 Revêtements et enduits Résumé : reen chemistry and wider environmental concerns have had an indelible effect on the chemical industry, from algae sourced chemicals and fuels to halving the carbon footprint of manufacturing the antibiotic Zerbaxa".'Solvents are a prominent consideration in green chemistry. Solvents are ubiquitous across the chemical sectors, but paints and coatings are their primary application.The large volumes in which they are used amplifies concerns over waste and their hazards to human health and the environment. As inert fluids intended only to permit the mixing and processing of other substances, solvents are not active ingredients and ultimately become waste, often in the form of fugitive air emissions. Diluents, coalescents and other softening agents impart the same properties as a solvent. Note de contenu : - Fig. 1 : Molecular structure and surface of Cyrene (dihydrolevoluglucosenone)
- Fig. 2 : Molecular structure and surface of 2,2,5,6-tetramethyloxolane (TMO)En ligne : https://drive.google.com/file/d/1qt1ni2DAOAVKm7T1Wm9PX1DUZRuhTajo/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36003
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Code-barres Cote Support Localisation Section Disponibilité 22826 - Périodique Bibliothèque principale Documentaires Disponible 22906 - Périodique Bibliothèque principale Documentaires Disponible Making the change to a biobased foam control agent in decorative paints / Alex Bullock in SURFACE COATINGS INTERNATIONAL, Vol. 104.3 (05-06/2021)
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Titre : Making the change to a biobased foam control agent in decorative paints Type de document : texte imprimé Auteurs : Alex Bullock, Auteur ; Emily Woodcock, Auteur Année de publication : 2021 Article en page(s) : p. 226-227 Langues : Anglais (eng) Catégories : Antimousse
Biomatériaux
Mesure
Revêtements décoratifs:Peinture décorativeIndex. décimale : 667.9 Revêtements et enduits Résumé : At Blackburn Chemicals, sustainability is very important to us ; which is why we are continually looking to develop and enhance our environmentally friendly range of products based on renewable sources, such as natural oil. In this technical article, we show how two of our biobased products compare with a standard mineral oil product in two decorative paint formulations. Note de contenu : - Foam control agents and test formulations
- Testing method
- Table 1 : Foam control agents
- Table 2 : Paint formulations (% by weight)
- Table 3 : S.G. measurements
- Table 4 : Application and compatibility test results
- Fig. 1 : Overhead mixer
- Fig. 2 : Photos of matt paint samples
- Fig. 3 : Photos of silk paint samplesEn ligne : https://drive.google.com/file/d/17N693fU0kHJYfn-tDxTBNY1xeo9L4s8K/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36004
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Code-barres Cote Support Localisation Section Disponibilité 22826 - Périodique Bibliothèque principale Documentaires Disponible 22906 - Périodique Bibliothèque principale Documentaires Disponible SUSBIND : Carbohydrate conversion to highly reactive intermediate chemicals for adhesives / Ana Babic in SURFACE COATINGS INTERNATIONAL, Vol. 104.3 (05-06/2021)
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Titre : SUSBIND : Carbohydrate conversion to highly reactive intermediate chemicals for adhesives Type de document : texte imprimé Auteurs : Ana Babic, Auteur ; Catherine Thoma, Auteur Année de publication : 2021 Article en page(s) : p. 222-224 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adhésifs biologiques
Biomatériaux
Chimie -- Essais et réactifs
Chimie écologique
Colles:Adhésifs
LiantsIndex. décimale : 667.9 Revêtements et enduits Résumé : SUSBIND (or SUStainable bio-BINDers for furniture) is a collaborative European project in the field of bioeconomy with 11 partners from 6 EU countries, from both research and industry. SUSBIND's highly sustainable biobased binders should replace conventional fossil-based binders currently used for wood-based panel boards in furniture mass products. By substituting fossil-based chemicals with those from renewable resources, the carbon footprint of furniture products will be reduced.
The expertise brought together within the SUSBIND project will finally see the development of a biobased binder able to compete on an industrial scale. As we become increasingly demanding of green production methods in all areas, SUSBIND will provide Europe with a competitive advantage," said the Scientific Co-ordinator of Cargill, Massimo Bregola.Note de contenu : - Carbohydrates as green raw material for reactive intermediates
- Development of biobased adhesives
- Fig. 1 : Acidic dehydration of fructose to hydroxymethylfurfural (HMF)
- Fig. 2 : Sulfuric acid-catalysed dehydrationof carbohydrates for production of adhesive precursors
- Fig. 3 : Proposed reaction between fructose and primary amine and glucose and primary amineEn ligne : https://drive.google.com/file/d/1kc8npFVhnhgiUj6DsdZPqU_11jL2Q14G/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36005
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Code-barres Cote Support Localisation Section Disponibilité 22826 - Périodique Bibliothèque principale Documentaires Disponible 22906 - Périodique Bibliothèque principale Documentaires Disponible