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Testing automotive coatings / Mike Richwalsky in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 207, N° 4634 (09/2017)

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 207, N° 4634 (09/2017) . - p. 18-19 Titre : Testing automotive coatings : The author discusses the need for more up-to-date weathering testing in the automotive coatings industry Type de document : texte imprimé Auteurs : Mike Richwalsky, Auteur Année de publication : 2017 Article en page(s) : p. 18-19 Langues : Anglais (eng) Catégories : Automobiles -- Revêtements:Automobiles -- Peinture Essais accélérés (technologie) Essais accélérés (technologie) -- Appareils et matériels Revêtements -- Effets du climat Index. décimale : 667.9 Revêtements et enduits Résumé : SAE J2527 (Performance Based Standard for Accelerated Exposure of Automotive Exterior Materials Using a Controlled Irradiance Xenon-Arc Apparatus) has been the industry standard for testing automotive exterior coatings since its inception in 2004. Since then, the standard has gone unchanged despite many of the advances in weathering testing over the past decade. In order to better predict how high-performance materials will perform outdoors, a revision of this standard is imperative. Technological advances in the performance of weathering testers, control of conditions and general understanding of the mechanisms of weathering can be applied to make SAE J2527 a better test method. These changes do not make the standard more restrictive and anyone with a Xenon-Arc chamber capable of meeting this test method, such as the Q-SUN Xe-3-HBS from Q-Lab Corporation, will still be able to run this test. A recent ballot has revised this standard, implementing some changes to reflect these new advances. Note de contenu : - Removal of remaining hardware-specific language - Modernisation of the standard - Water spray verification - Polystyrene testing as optional - Better optical filter specification - Lot 9 polystyrene Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29053 [article]

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Latest developments in scratch tests / Ingrid Bloß zehntner in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 207, N° 4634 (09/2017)

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 207, N° 4634 (09/2017) . - p. 20-23 Titre : Latest developments in scratch tests Type de document : texte imprimé Auteurs : Ingrid Bloß zehntner, Auteur Année de publication : 2017 Article en page(s) : p. 20-23 Langues : Anglais (eng) Catégories : Essais de résilience Essais dynamiques -- Appareils et matériels Rayures Index. décimale : 667.9 Revêtements et enduits Résumé : Linear abrasion testing is used in many fields of the industry and can be considered a valid testing method for various parameters, such as scratch/ mar resistance, colour fastness, smearing of print and many more. When the test is carried out diligently under defined conditions it is a reliable and reproducible test. There is more capability in this testing method than is exploited today and it leaves space for more research in many fields. To name a few, the detailed analysis of the produced damages as compared to real life damages could lead to recommandations for the optimal choice of abrasive material on different coatings and substrates. Considering the high innovation rate in the field of coatings, there is a demand for flexible testing methods that can be adapted quickly to innovative coating properties. The linear abrasion test offers a lot of potential for further development. Note de contenu : - Standards and procedures - Abrasive materials - Grey scale - Gloss measurement - TABLES : 1. An impression of the diversity of materials and equipment that may be necessary for the conduction of linear abrasion tests according to different standards - 2. Average values of gloss measurements for two samples Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29054 [article]

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Core-shell acrylic polymers for multi-surface coatings in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 207, N° 4634 (09/2017)

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 207, N° 4634 (09/2017) . - p. 27-28 Titre : Core-shell acrylic polymers for multi-surface coatings Type de document : texte imprimé Année de publication : 2017 Article en page(s) : p. 27-28 Langues : Anglais (eng) Catégories : Brillance (optique) Core-Shell Formulation (Génie chimique) Matériaux -- Propriétés barrières Polyacryliques Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- Additifs Index. décimale : 667.9 Revêtements et enduits Résumé : The authors discusses their research into the development of core-shell acrylic lattices suitable for wood, metal and plastic surfaces. Note de contenu : - Polymer development - Wood stain - Barrier coating - High gloss coating - TABLES : 1. Data and results for VeoVa10 acrylate core-shell compositions - 2. Data and results for grit improved Veova10 acrylate core-shell compositions - 3. Wood stain formulation - 4. Barrier coating formulation - 5. High gloss paint formulation - FIGURES : 1. Wood stain blocking resistance for grit improved VeoVa10 acrylate binders at 1kg/1h, 23°C (ISO 4622) - 2. Wood stain gloss levels for grit improved VeoVA10 acrylate binders (ISO2813) - 3. Wood stain outdoor exposure after three years south facing : left, VeoVa10 acrylate #6 and acrylic core-shell - 4. Barrier coating cyclic water absorption (DIN 53495) - 5. Barrier coating continuous water absorption (internal method) - 7. 18% PVC white paints dry and wet pull-off adhesion after seven days drying (ISO 4624) Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29058 [article]

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Novel sugar-based neutralising agent for ecolabel certified paints / Silvia Ziebold in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 207, N° 4634 (09/2017)

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 207, N° 4634 (09/2017) . - p. 29-31 Titre : Novel sugar-based neutralising agent 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. 29-31 Langues : Anglais (eng) Catégories : Etiquetage écologique Neutralisants (chimie) Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- Additifs Index. décimale : 667.9 Revêtements et enduits Résumé : There are various neutralising agents available to the paint industry. The ost common neutralising agents on the market are standard products, such as caustic soda (NaOH) and ammonia or the muttifunctional additive 2-Amino-2- Methylpropan-1-ol (AMP). Clariant recently introduced a sugar¬based speciality amine (Glucamine) developed specifically for use as a multifunctional performance additive in eco-friendly, water-based paints. In order to create a comprehensive assessment of these neutralising agents, this article considers environmental, health and safety aspects with the comparison of performance characteristics. Note de contenu : - How sustainable are neutralising agents ? - Storage stability - Flash rust - Shift of shades in tinted systems - Pigment compatibility - TABLE : Evaluation of neutralising agents based on environmental, health and safety aspects - FIGURES : 1. Storage stability - syneresis, sedimentation, pH and viscosity - 2. Storage stability - frost resistance - 3. Flash rust rating according to ASTM D 610 - 4. Rust discolourations - 5. Shift of shades - 6. Pigment compatibility in a water-based system - 8. 18% PVC white paints gloss levels - 9. 18% PVC white paints hardness levels (ISO 1522) - 10. 18% PVC white paints blocking resistance at 1 kg/1h, 23°C (ISO 4622) - 11. 18 % PVC white paints elastomeric properties (ASTM D 2370) Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29060 [article]

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Influence of selection of surfactant system on application properties of polymeric dispersions / Lukasz Toma in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 207, N° 4634 (09/2017)

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 207, N° 4634 (09/2017) . - p. 34-37 Titre : Influence of selection of surfactant system on application properties of polymeric dispersions Type de document : texte imprimé Auteurs : Lukasz Toma, Auteur Année de publication : 2017 Article en page(s) : p. 34-37 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Copolymère styrène acrylique Core-Shell Dispersions et suspensions Emulsifiants Perméabilité Polyacryliques Polymérisation Résistance aux frottements humides Stabilité chimique Stabilité thermique Taille des particules Index. décimale : 667.9 Revêtements et enduits Résumé : Anionic and non-ionic surfactants were evaluated in pure-acrylic and low MFFT (0°C) styrene-acrylic dispersions. Synthesis of dispersions was conducted by seeded emulsion polymerisation. Two types of pure-acrylic dispersions were synthetised - conventional and core-shell type, obtained in two-stage emulsion polymerisation. In the conventional dispersion influence of anionic emulsifier on particle size was evaluated. In the core-shell type impact of emulsifiers on water-resistance and chemical stability of dispersion was tested. Non-ionic surfactants were used in low MFFT styrene-acrylic dispersion in order to evaluate their influence on chemical and freeze-thaw stability of dispersion. Based on synthetised dispersions, samples of high PVC (75.94%) white point were prepared and their wet-scrub resistance (40 cycles) was analysed. Note de contenu : - MATERIALS : 1. Anionic surfactants - 2. Nonionic and amphoteric surfactants - INFLUENCE ON PARTICLE SIZE : Synthesis of the MMA/EA dispersions - Particle size evaluation - INFLUENCE ON CHEMICAL STABILITY OF DISPERSION AND WATER PERMEABILITY OF COATING : Synthesis of the acrylic core-shell dispersion - Determination of water uptake - Chemical stability - INFLUENCE OF NONIONIC SURFACTANT ON DISPERSION PROPERTIES : Synthesis of the low MFFT styrene-acrylic dispersions - Chemical stability - Wet-scrub resistance of white matte paint - Freeze-thaw stability of commercial SA latex - TABLES : 1. Composition of MMA/EA dispersion - 2. Composition of the acrylic core-shell dispersion - 3. The chemical stablity of received core-shell dispersions - 4. Composition of the low-MFFT S/BA dispersion - 5. Chemical stabilty of synthetised S/BA dispersions - FIGURES : 1. Comparison of d50 particle size of the MMA/EA dispersions - 2. Comparison of water uptake of the polymer film of the obtained core-shell dispersions - 3. Comparison of freeze-thaw stability Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29061 [article]

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Polymer Paint Colour Journal - PPCJ Vol. 207, N° 4634 URL