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Choosing an outdoor durable powder coating / Kevin M. Biller in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 206, N° 4625 (10/2016)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 206, N° 4625 (10/2016) . - p. 15-16 Titre : Choosing an outdoor durable powder coating Type de document : texte imprimé Auteurs : Kevin M. Biller, Auteur Année de publication : 2016 Article en page(s) : p. 15-16 Langues : Anglais (eng) Catégories : Durée de vie (Ingénierie) Essais accélérés (technologie) Rayonnement ultraviolet Revêtements poudre:Peinture poudre Index. décimale : 667.9 Revêtements et enduits Résumé : Selecting an exterior durable powder coating can either be a daunting task or possibly an overly simplistic exercise depending on you knowledge (or lack thereof) of the technology. Note de contenu : - Outdoor durability defined - Chemistries - Specifications - Test methods - TABLES : 1. Outdoor durable powder coating chemistries - 2. Architectural exterior durability specifications - 3. UV test parameters En ligne : https://drive.google.com/file/d/1OEctWpQwfyImNfRseNXKRhd-Vz-RDXar/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27101 [article]

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L-Lactide chemistry : a safe and renewable building block for sustainable coatings / Armin Michel in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 206, N° 4625 (10/2016)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 206, N° 4625 (10/2016) . - p. 10-12 Titre : L-Lactide chemistry : a safe and renewable building block for sustainable coatings Type de document : texte imprimé Auteurs : Armin Michel, Auteur Année de publication : 2016 Article en page(s) : p. 10-12 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chimie écologique Gaz à effet de serre -- Réduction Lactide Le lactide est le diester cyclique de l’acide lactique et le monomère qui permet de synthétiser le PLA (Poly Lactique Acide) par polymérisation d’ouverture de cycle (ROP). Issu de l’acide lactique (ou acide 2-hydroxypropanoïque) et produit par fermentation du saccharose ou du glucose, le lactide est d’origine naturelle et renouvelable. Ce produit s’inscrit parfaitement dans le cadre du développement de la chimie verte. Le lactide, étant issu de l’acide lactique qui possède 2 formes stéréo-isomériques (acide lactique L(+) et acide lactique D(-)),existe sous 3 formes stéréo-isomériques : la forme L-lactide, la forme D-lactide et la forme Méso-lactide. Polyalkydes Réduction des composés organiques volatils Revêtement -- Séchage:Peinture -- Séchage Rhéologie Viscosité Index. décimale : 667.9 Revêtements et enduits Résumé : The potentiel of L-Lactide-modified alkyd resins to formulate lower VOC coatings with a reduced carbon footprint. Sustainability continues to be a major trend in the paint and coatings industry. Government regulations, in particular, have been a key driver for change as the sector finds itself under increasing pressure to comply with ever more stringent environmental controls. In the USA, the Environmental Protection Agency has established clear guidance relating to emissions. Meanwhile, the paint industry in China has recently undergone a significant step change with the introduction of an Environmental Protection Law in February 2015. The legislation is aimed at improving air quality across the country via the establishment of emission standards and has a direct impact on the coatings industry. While government regulations and sustainability targets play a significant role, self-accountability and consumer preferences for bio-based alternatives have also become important drivers for rapid change. Besides meeting legislative requirements, industry players are reailsing that a reduced environmental footprint translates to a competitive advantage. As such, there is pressure on oil members of the coatings value chain to focus on sustainability and the improvement of environmental performance ; from reducing water and energy consumption and lowering emissions during the production process ; to using more environmentally friendly raw materials, eliminating toxicity and increasing functionality. Bio-based technologies are coming to the fore as a result, with new research highlighting the potentiel of L-Lactide-modified alkyd resins to formulate lower VOC coatings with a reduced carbon footprint. Note de contenu : - Defining VOCs - A growing market - Leveraging L-lactide chemistry - Superior sustainable performance - Winning sustainable technology - FIGURES : 1. Reduction of the diluted resin viscosity (>50%) at comparable solid (55%) - 2. Reduction of the resin viscosity (>50%) at comparable solid content in a saturated polyester resin - 3.SO medium-oil alkyd resin viscosity vs solid content - 4. Reduction of drying time (25°C ; 50% humidity) - 5. Air-drying time performance vs cobalt content (25°C ; 50% humidity) En ligne : https://drive.google.com/file/d/1lxpDc3u5gB3Wry9TI5nrD3ypxksv5NjV/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27102 [article]

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Precise colour and gloss measurement in one instrument / Henrik Folkerts in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 206, N° 4625 (10/2016)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 206, N° 4625 (10/2016) . - p. 20-22 Titre : Precise colour and gloss measurement in one instrument Type de document : texte imprimé Auteurs : Henrik Folkerts, Auteur Année de publication : 2016 Article en page(s) : p. 20-22 Langues : Anglais (eng) Catégories : Brillance (optique) -- Mesure Colorimétrie Mesure -- Instruments Index. décimale : 667.9 Revêtements et enduits Résumé : How tolerances for both colour and gloss have tightened over the years and illustrates how two into one will go, by combining accuracy, ease of use and functionality changes in appearance. Material tests are often performed under extreme weather conditions. Paint manufacturers have to perform weathering studies on panels or parts in the desert. In order to objectively determine changes in appearance, colour and gloss need to be measured during the exposure time. Portable measuring devices allow performing the test outside at the test areas saving a lot of time as the parts don't need to be carried back to the test lab. The spectro-guide gloss gives reliable measurement results according to international specifications. A patented temperature control guarantees highly stable results. Thus, it is no longer necessary to re-calibrate the instrument every eight hours ; the spectro-guide gloss only needs to be re-calibrated every three months - even when the temperature changes. To avoid any user influence the innovative LED technology detects amblent light during the measurement. The data are corrected or a message is displayed to make the user aware of an invalid reading. Due to an optimised power management and the fact that LEDs only consume a minute amount of energy the spectro-guide gloss uses standard alkaline batteries lasting for up to 8000 readings. This innovative technology also allows using less mechanical components. Therefore, the spectro-guide could be really designed as a portable, light weight and, at the same time, robust instrument. To supply a full description of the appearance of a surface and to precisely analyse the reason for a visuel mismatch, it is necessary to determine bath surface properties: colour and gloss. Note de contenu : - Gloss - Reflection behaviour of surfaces - Gloss measurement - Colour - Standard illuminant - Standard observer - Interaction between light and object - FIGURES : 1. Components of gloss perception : light source, surface, observer - 2. High gloss and matte to semi-gloss surfaces - 3. Geometries 20° high gloss surfaces, 60° medium gloss surfaces, 85° matte surfaces - 4. Standard illuminant - 6. and 7. Right - 8. Below En ligne : https://drive.google.com/file/d/1Gb8Qf61OkRkMfue8IZR9SfFkJebC2wla/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27103 [article]

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Optimum pigment calibration for the paint and plastic industry / Rik Mertens in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 206, N° 4625 (10/2016)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 206, N° 4625 (10/2016) . - p. 23 Titre : Optimum pigment calibration for the paint and plastic industry Type de document : texte imprimé Auteurs : Rik Mertens, Auteur Année de publication : 2016 Article en page(s) : p. 23 Langues : Anglais (eng) Catégories : Etalonnage Pigments Index. décimale : 667.2 Colorants et pigments Résumé : How to achieve optimum colour matching results following research that has culminated in the possibility for companies to select the best formulation model for a specific colour process. En ligne : https://drive.google.com/file/d/1j3kdAuWVCQhVpFQb_WQF8Kaynd-qfUFl/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27104 [article]

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Water-based resin technology with stain-blocking properties / Carolin Wallenhorst in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 206, N° 4625 (10/2016)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 206, N° 4625 (10/2016) . - p. 24-26 Titre : Water-based resin technology with stain-blocking properties Type de document : texte imprimé Auteurs : Carolin Wallenhorst, Auteur Année de publication : 2016 Article en page(s) : p. 24-26 Langues : Anglais (eng) Catégories : Polyalkydes Polymères cationiques Résistance aux taches Revêtement mural:Peinture murale Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- Additifs Index. décimale : 667.9 Revêtements et enduits Résumé : Modified alkyd emulsions provide effective application properties for stain blocking wall paints. Modified alkyd emulsions provide effective application properties for stain blocking wall paints. Due to modern ecological and employment protection guidelines, solvent-based paints became more and more under pressure and already have strict legal requirements in certain countries. In the European Community eg the approved volatile organic compounds, VOC, content is limited for several types of deco paints in which the term volatile organic substances includes all solvents with a boiling point below 250°C at standard pressure. Interior wall paints, for example, have an upper limit of 30g/lit resp 100g/lit, depending on the gloss level. According to those requirements, the legal Omit values can only be fulfilled with water-based systems. But even without legislation water-based systems have big advantages in comparison to solvent-based types as they provide a lower smell level and are non-inflammable. Note de contenu : - Stain-blocking properties - Performance of cationic modified alkyd resins - FIGURES : 1. Simplified illustration of bleeding phenomenon in wall paints, based on a) acrylic emulsion, b) cationic polymer emulsion and c) cationic modified alkyd emulsion - 2. Stain-blocking effect on gypsum plaster board (styrene acrylate-based paint on the upper part and the cationic modified alkyd emulsion-based paint on the lower part ; numbers indicate the amount of layers coated on the contaminated board - 3. Righ : Staint-blocking effect on Merbau-wood (styrene acrylate-based paint on the top, cationic binder-based paint in the middle and cationic modified alkyd emulsion-based paint at the bottom ; numbers indicate the amount of layers coated on the wood) - 4. Stain-blocking effect under plaster (styrene-acrylate-based paint on the top and cationic modified alkyd emulsion-based paint at the bottom) - TABLES : 1. Specification on Necowel 4300 - 2. Starting formulation for a stain-blocking wall paint based on Necowel 4300 En ligne : https://drive.google.com/file/d/1WJty6TnJSq52g3QG9JfN2TESqZC2g10q/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27110 [article]

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Light stabiliser enhance colour protection / Everlight Chemical Industrial Corporation (Taipei, Taiwan) in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 206, N° 4625 (10/2016)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 206, N° 4625 (10/2016) . - p. 27-29 Titre : Light stabiliser enhance colour protection Type de document : texte imprimé Auteurs : Everlight Chemical Industrial Corporation (Taipei, Taiwan), Auteur Année de publication : 2016 Article en page(s) : p. 27-29 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse de variance En statistique, l'analyse de la variance (terme souvent abrégé par le terme anglais ANOVA : ANalysis Of VAriance) est un ensemble de modèles statistiques utilisés pour vérifier si les moyennes des groupes proviennent d'une même population. Les groupes correspondent aux modalités d'une variable qualitative (p. ex. variable : traitement; modalités : programme d'entrainement sportif, suppléments alimentaires ; placebo) et les moyennes sont calculés à partir d'une variable continue (p. ex. gain musculaire). Ce test s'applique lorsque l'on mesure une ou plusieurs variables explicatives catégorielles (appelées alors facteurs de variabilité, leurs différentes modalités étant parfois appelées "niveaux") qui ont de l'influence sur la loi d'une variable continue à expliquer. On parle d'analyse à un facteur lorsque l'analyse porte sur un modèle décrit par un seul facteur de variabilité, d'analyse à deux facteurs ou d'analyse multifactorielle sinon. (Wikipedia) Photostabilité Polymères en émulsion Polyuréthanes Résistance au jaunissement Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- Additifs Revêtements en phase aqueuse -- Séchage sous rayonnement ultraviolet:Peinture en phase aqueuse -- Séchage sous rayonnement ultraviolet Index. décimale : 667.9 Revêtements et enduits Résumé : Reducing yellowing during the curing process in waterborne coatings. Waterborne UV-curable coatings — Eco-Friendly coatings — have been developed to replace conventional UV curable coatings with VOC emissions. The challenges of waterborne UV curable coatings have two aspects. One is that discolouration may occur when resins are exposed to ultraviolet (UV) light from natural sunlight. Waterborne UV-curable light stabilisers are applied to the surface for protection. The other challenge is caused yellowing during the curing process. This problem will affect the customer's product quality and, therefore, increase product costs. A novel light stabiliser (NLS) was developed specifically for waterborne UV curable coatings to reduce yellowing during curing process. The Design of Experiment (DOE) was used in this study. Test data showed that the NLS in a waterborne clear UV curable coating would net have negative impacts to cure speed. The results confirmed that by increasing the concentration of NLS in the top coat can effectively reduce yellowing during the curing process. Furthermore, data also showed that by increasing the coating thickness, the yellowing during the curing process cannot be improved to any appreciable degree. Note de contenu : - EXPERIMENT : Optimal results - Novel light stabiliser effect (NLS) - Dry film thickness effects (DFT) - The optimal prediction profiler - Response surface methodology (RSM) - Minimal energy to reach curing tests - Reducing yellowing during curing process test En ligne : https://drive.google.com/file/d/1DSfW18YXEX2QdubjmspCgv5MaHEQhift/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27111 [article]

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Polymer Paint Colour Journal - PPCJ Vol. 206, N° 4625 URL