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EUROPEAN COATINGS JOURNAL (ECJ) . N° 3European Coatings ShowMention de date : 03/2017 Paru le : 07/03/2017 |
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Ajouter le résultat dans votre panierCool solution for the coatings industry / Daniel Lladó in EUROPEAN COATINGS JOURNAL (ECJ), N° 3 (03/2017)
[article]
Titre : Cool solution for the coatings industry : Improving performance by evaluating reflectance and pigment chemistry Type de document : texte imprimé Auteurs : Daniel Lladó, Auteur ; Patricia Pérez, Auteur ; Jordi Fernández Urbán, Auteur Année de publication : 2017 Article en page(s) : p. 74-79 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Coil coatings
Dioxyde de titane
Matériaux -- Propriétés fonctionnelles
Noir de carbone
Pigments inorganiques
Polyacryliques
Polyfluorure de vinylidène
Réflectance
Réflectivité thermiqueIndex. décimale : 667.9 Revêtements et enduits Résumé : Demand for coatings that save energy and reduce thermal stress is increasing. Cool pigments are those that reflect more near-infrared radiation (NIR) and thus have a high TSR (Total Solar Reflectance). They are usually associated with complex inorganic colour pigments (CICPs) and are established on the market for their cool properties. Evaluating the TSR and the relevant pigment chemistry provides an opportunity to fine tune formulation for maximum performance. Note de contenu : - Measuring solar radiation to evaluate effect
- Total solar reflectance (TSR)
- Substrate and pigment chemistry are critical to formulation
- Contribution to TSR depends on pigment chemistry
- L value more important than pigment concentration
- Blue additive to improve jetness and cost effectiveness
- Cool property considerations
- FIGURES : 1. Scheme of how sunlight is converted into heat. TST of a white coating compared with a black coating - 2. Carbon black TSR vs different grades of pigment brown 29 - 3. TSR of unpigmented and yellow paints (coil coating) at different thicknesses and different substrates. TSR of different blues at different thicknesses and substrates - 4. TSR curves comparing Nubicoat HRD and pigment blue 28 at the same dosage - 5. Pigment brown 29 with TiO2 ; L value vs TSR - 6. Nubicoat HRD with TiO2 ; L value vs TSR - 7. Effect of titanium dioxide on the TSREn ligne : https://drive.google.com/file/d/1VszrAz04ZUotWLw8T9pbfqIWW-CoIHDa/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27950
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Code-barres Cote Support Localisation Section Disponibilité 18717 - Périodique Bibliothèque principale Documentaires Disponible Harmonized reporting of hazardous mixtures / Janice Robinson in EUROPEAN COATINGS JOURNAL (ECJ), N° 3 (03/2017)
[article]
Titre : Harmonized reporting of hazardous mixtures : Article 45 of the CLP regulation aims at an EU-wide harmonization for reporting of hazardous mixtures. In September the new Annex VIII to the CLP regulation was agreed on by the REACH Committee Type de document : texte imprimé Auteurs : Janice Robinson, Auteur Année de publication : 2017 Article en page(s) : p. 82-83 Langues : Anglais (eng) Catégories : Mélanges (chimie)
Substances dangereuses -- Législation -- Pays de l'Union Européenne
Substances dangereuses -- Mesures de sécuritéIndex. décimale : 667.9 Revêtements et enduits Résumé : A new regulation is amending CLP regarding the reporting of hazardous mixtures to appointed bodies (known as 'poison centres'). The author on deadlines and the main changes of the regulation for coatings manufacturers. En ligne : https://drive.google.com/file/d/1D619sDfrj-Gw5-1EsXaXr__EfZwTSYCL/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27951
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Code-barres Cote Support Localisation Section Disponibilité 18717 - Périodique Bibliothèque principale Documentaires Disponible Finding hidden structures / Kamakski Christopher in EUROPEAN COATINGS JOURNAL (ECJ), N° 3 (03/2017)
[article]
Titre : Finding hidden structures : Methods of determining emulsion particle morphology reviewed Type de document : texte imprimé Auteurs : Kamakski Christopher, Auteur Année de publication : 2017 Article en page(s) : p. 84-88 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse mécanique dynamique
Analyse spectrale
Analyse thermique
Caractérisation
Core-Shell
Emulsions
Microscopie
Morphologie (matériaux)
Polyacrylates
Polyuréthanes
Résonance magnétique nucléaire
Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- AdditifsIndex. décimale : 667.9 Revêtements et enduits Résumé : The use of emulsions with heterogeneous polymer particles can greatly enhance water-borne coating performance. Techniques range from incorporating inorganic nanoparticles to combining similar polymers. The use of various characterisation methods for systematic analysis of structure and composition is described. Note de contenu : - Summary of methods for studying morphology
- The scope of differential scanning calorimetry
- Distinguishing polymers with similar characteristics
- DMA can also indentify hidden structures
- The value and limitations of TEM
- Other forms of microscopy
- Spectroscopy methods analyse only outer layers
- Solid state NMR analysis
- Logical analysis procedure is necessary
- FIGURES : 1. Schematic representation of different morphology structure (a) gradient (b) raspberry (c) sandwich (de) inclusion (e) core-shell - 2. Idealised states of phase separation within emulsion particles and examples of their corresponding derivative modulated DSC traces - DMA traces showing the difference in tan delta of single phase and core-shell polymer - 4. TEM micrographs of the emulsions particles (a) core-shell, (b) inclusion (c) multi-lobed - 5. SEM micrographs of (a) raspberry type, (b) film hybrid emulsion, (c) hollow polymer - 6. AFM image showing topography of (a) acrylate core-shell emulsion, (b & c) acrylate core/polyurethane shell - 7. Schematic diagram for arriving at the characterisation techniques most useful for morphology identificationEn ligne : https://drive.google.com/file/d/1zmIVnpSYeq8_a7YVhLDs1vB1AOjPOah-/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27952
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Code-barres Cote Support Localisation Section Disponibilité 18717 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : All-round gains for polyurethanes : Thiol-silane oligomer avoids limitations of amino silanes Type de document : texte imprimé Auteurs : Nayeem Soad, Auteur ; Dean Kondos, Auteur ; Dmitry Chernyshov, Auteur ; Vikram Kumar, Auteur ; Martin Wusik, Auteur Année de publication : 2017 Article en page(s) : p. 90-94 Langues : Anglais (eng) Catégories : Adhésion
Anticorrosifs
Anticorrosion
Durée de vie en pot
Dureté (matériaux)
Formulation (Génie chimique)
Métaux -- Revêtements protecteurs
Oligomères
Polyuréthanes
Revêtements -- Additifs:Peinture -- Additifs
Revêtements bi-composant:Peinture bi-composant
Silanes
ThiolsIndex. décimale : 667.9 Revêtements et enduits Résumé : A new low-odour oligomeric glycolic mercapto silane additive for 2K PU systems eliminates disadvantages associated with amino silanes, such as yellowing on exposure and shortened pot life. Improvements could be obtained in pot life, surface hardness, metal substrate adhesion and corrosion resistance. Note de contenu : - Avoiding the limitations of amino silanes
- Test formulations, preparation and application
- Details of the four different test coatings
- Testing carried out to standard protocols
- Adhesion and corrosion resistance markedly improved
- Pot life extended when tin catalyst is used
- Corrosion resistance and hardnesss improved
- Corrosion resistance of pigmented coatings improved
- Differences in reactions of silanes identified
- Wide range of benefits for several coating types
- FIGURES : 1. Structure of the new mercapto-silane - 2. Corrosion resistance on galvanised metals, showing improvement due to silane addition - 3. Adhesion test results ; control vs. silane addition - 4. Corrosion resistance as a function of time and silane loading - 5. Clear coat dry times as a function of silane in formulation - 6. Coating hardness as function of time and wt% mercapto-silane - 7. Corrosion resistance of pigmented coatings with and without the silane - 8. Adhesion and corrosion resistance data of a commercial system with and without the silane
- TABLES : 1. Formulations for clear coats and pigmented system - 2. Modification of commercial primer with silaneEn ligne : https://drive.google.com/file/d/1pagWetw7kREtdFxfDWwzjwDvGReyUd3z/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27953
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Code-barres Cote Support Localisation Section Disponibilité 18717 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : A brilliant future : Daylight fluorescent pigments (DLFP) for enhanced performance and colour intensity Type de document : texte imprimé Auteurs : Rami Ismael, Auteur Année de publication : 2017 Article en page(s) : p. 96-102 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Brillance (optique)
Couleur
Fluorescence
Fragmentation
Photostabilité
Pigments à effets spéciauxIndex. décimale : 667.9 Revêtements et enduits Résumé : Fluorescent pigments require brilliance as well as function. Traditionally, they have been based on the carcinogen formaldehyde, which needs to be replaced without compromising pigment performance. Using formaldehyde-free daylight fluorescent pigments and enhancing their functional properties has produced promising pigments that offer improved stability in both waterbrne and solvent-based formulations. Note de contenu : - DLFP helps to increase colour intensity and avoid formaldehyde
- Exploiting key properties of DLFP to obtain better fluorescent pigments
- Finer pigment grinding for brilliance & colour strength
- New technologies improve colour strength and brilliance
- Improvements in light fastness and heat stability
- Effective formaldehyde measurements
- FIGURES : 1. Goalkeeper gloves - 2. Polymer structure of DLFP based on melamine-formaldehyde resins - 3. Stability properties of formaldehyde-free series "AG-10" and "AQ-10" compared with formaldehyde-containing series ("AC-10" and "AC-20")
- TABLE : Storage stability of different technologies DLFP. Grey : high storage stability - Green : viscosity increase - Red : formulation thickeningEn ligne : https://drive.google.com/file/d/1ex78qhx2fi5rBOmYaBubLCCq2rp5tAeV/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27954
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Code-barres Cote Support Localisation Section Disponibilité 18717 - Périodique Bibliothèque principale Documentaires Disponible Neutralising formulation problems / Silvia Ziebold in EUROPEAN COATINGS JOURNAL (ECJ), N° 3 (03/2017)
[article]
Titre : Neutralising formulation problems : Novel sugar-based additive for ecolabel-certified paints Type de document : texte imprimé Auteurs : Silvia Ziebold, Auteur ; Jörg Rüger, Auteur Année de publication : 2017 Article en page(s) : p. 104-109 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Etiquetage écologique
Glucides
Neutralisants (chimie)
pH
Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- Additifs
Stabilité au stockageIndex. décimale : 667.9 Revêtements et enduits Résumé : Despite only being used in small quantities in water-based paints, neutralising agents can have a significant impact. They regulate the pH value and make a positive contribution to the storage stability of the paint by reducing the interaction between the paint ingredients. Compliance with health and environmental requirements, such as being VOC/SVOC-free and hazard label-free, make these neutralising agents particularly attractive for ecolabel-certified paints. Note de contenu : - Multifunctional neutralising agents improve paint performance
- Ecolabels restrict content
- Sugar-based additive offers sustainability benefits being a renewable material
- Neutralising agents put to the test
- Improving storage stability in semi-gloss lacquers
- No impact on drying process
- Flash rust
- Shift of shades in tinted systems
- Pigment compatibility
- Novel additive improves paint performance and is economicalEn ligne : https://drive.google.com/file/d/1u-nkqyx6yQqioGURRY_ZRVE2ptNEln3l/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27955
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Code-barres Cote Support Localisation Section Disponibilité 18717 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : From waste to wall : Sustainable monomer improves performance of emulsion binders Type de document : texte imprimé Auteurs : Simon Austin, Auteur ; Bob Foster, Auteur ; Martin Conrads, Auteur Année de publication : 2017 Article en page(s) : p. 110-114 Langues : Anglais (eng) Catégories : Acrylates Les monomères acrylates sont un groupe d'esters faisant partie des vinyles, car renfermant une double liaison carbone-carbone et sont utilisés pour former des polyacryliques qui ont de multiples usages.
Chimie écologique
Copolymère acrylique acétate de vinyle
Copolymère styrène acrylique
Liants
Monomères
Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- AdditifsIndex. décimale : 667.9 Revêtements et enduits Résumé : A new bio-based monomer, 2-octyl acrylate, has been derived from a waste product of the processing of castor oil in alkyd manufacture. It was substituted for n-butyl acrylate in three different types of emulsion. In all cases good polymerisation was obtained and paints showed improvements in some properties. Note de contenu : - Key requirements for 'greener' monomers
- New monomer is derived from waste bio-product
- Basic of the comparative study
- Satisfactory polymerisation readily obtained
- Paint test results summarised
- Satisfactory performance in styrene acrylic copolymer
- Monomer is also effective in pure acrylic copolymer
- Good performance obtained, reasonable cost predicted
- FIGURES : 1. Production of 2-octyl acrylate from a sustainable source - 2. Vinyl acetate/acrlic emulsion water uptake over time - 3. Styrene/acrylic water uptake over time - 4. Pure acrylic water uptake over time
- TABLES : 1. Vinyl acetate/acrylic - polymer and application properties - 2. Styrene/acrylic - polymer and application properties - 3. Pure acrylic - polymer and application propertiesEn ligne : https://drive.google.com/file/d/1dktf56Ql0iayAQ9sQ7CKN_QiVg06gnW2/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27956
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Code-barres Cote Support Localisation Section Disponibilité 18717 - Périodique Bibliothèque principale Documentaires Disponible Pinhole free smoother finishing on MDF / Hugo Renkema in EUROPEAN COATINGS JOURNAL (ECJ), N° 3 (03/2017)
[article]
Titre : Pinhole free smoother finishing on MDF : Controlled curing cycles prevent pinholes on MDF finishes Type de document : texte imprimé Auteurs : Hugo Renkema, Auteur ; Peter Amesz, Auteur ; Johan de Lange, Auteur ; Robert Vierhout, Auteur ; Peter Wellenberg, Auteur ; Vinayak Khatavkar, Auteur Année de publication : 2017 Article en page(s) : p. 116-120 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Basses températures
Peinture poudre -- Défauts
Polymérisation
Revêtements -- Finition:Peinture -- FinitionIndex. décimale : 667.9 Revêtements et enduits Résumé : The formation of pinholes on powder coatings caused by out-gassing of medium density fireboard (MDF) has been studies. A novel stoving method called asynchronous heat-curing has been developed to prevent pinhole formation when using a low-temperature curing powder coating. Note de contenu : - MDF coating defects arise mainly with smooth finishes
- Why pinholes occur on MDF during curing cycles
- Modelling the temperature profile of MDF in the oven
- Pinhole formation and a limited prevention technique
- Asynchronous heat-curing allows gases to escape
- Concept is tested on a demonstration line
- FIGURES : 1. Pinholes visible on front surface and sides of 18 mm thick powder coated MDF and a panel without pinholes - 2. Underwater setup. A piece of MDF (100 x 100 x 18 mm) submerged in water and fed with air at 100 mbar. Bubbles escape through interconnected pores on all six sides - 3. (1) Unmolten powder on MDF, no overpressure pressure in pore. (2) Powder becomes molten, trapping expanding air and evaporating moisture inside the MDF, generating an overpressure. (3) Pressure in pore has become sufficiently high to deform the molten paint. (4) Pressure has increased high enough to burst the molten paint, forming to a pinhole - 4. Model of temperature evolution thorugh the cross-section of an 18 mm thick MDF board during healing up - 5. Model of pressure evolution through the cross-section of an 18 mm thick MDF board during heating up - 6. Asynchronous heat-curing concept : (1) All sides are heated (red arrow) except ghe back. (2) Paint is cured (red) on all sides and unmolten paint (blue on the back allows overpressure to escape. (3-4) Back is heated and cure. (5) Finished powder coated MDF - 7. Temperature profile of the front and back sides of a powder coated MDF panel heat-cured at 130°C for three minutes, using the asynchronous heat-curing method - 8. Pinhole free smooth powder coated MDF board (300 x 300 x 18 mm)En ligne : https://drive.google.com/file/d/1--zrJXbWQC88SnlJuL-NCQwEIp_ZVhpd/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27957
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