Good to touch-and it's permanent ! / Christoph Irle in EUROPEAN COATINGS JOURNAL (ECJ), N° 11/2007 (11/2007)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 11/2007 (11/2007) . - p. 8-10 Titre : Good to touch-and it's permanent ! : New processes for the production of improved soft-feel coatings Type de document : texte imprimé Auteurs : Christoph Irle, Auteur ; Markus Mechtel, Auteur Année de publication : 2007 Article en page(s) : p. 8-10 Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : There has been an increasing trend in the automotive industry in recent years towards designing car interiors with soft, high-quality surfaces that are also pleasing to touch.To achieve these charactéristics, use is made of low-emission, water-borne soft-feel coatings.The very latest generation of these coating systems also complies with the strictest specifications regarding resistance to hydrolysis, yellowing and chemicals.Processes are currently being developed that will make it easier to produce soft-feel finishes efficiently and with even more scope for variation. En ligne : https://drive.google.com/file/d/189d_5MrZSUC6kP9P6CHcBKSXnu_-Ilvq/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8181 [article]

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Painting in a new mould / Markus Mechtel in EUROPEAN COATINGS JOURNAL (ECJ), N° 4 (04/2017)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 4 (04/2017) . - p. 154-157 Titre : Painting in a new mould : High quality finishes applied on the injection moulding machine Type de document : texte imprimé Auteurs : Markus Mechtel, Auteur ; Jan Weikard, Auteur ; Jan Helmig, Auteur Année de publication : 2017 Article en page(s) : p. 154-157 Langues : Anglais (eng) Catégories : Automobiles -- Habitacles Matières plastiques -- Revêtement Polyuréthanes Revêtements dans le moule Index. décimale : 667.9 Revêtements et enduits Résumé : Plastic components for automotive interiors are usually wet-coated some time after moulding. A new process applies the coating on the moulding machine. A wide range of gloss, matt or textured finished can be produced on the same component in a single operation. Note de contenu : - Coating in the mould : how the process functions - Simulation procedure aids effective mould design - Benefits of matching the finish to the mould surface - How designed freedom can be increased - How cost and energy savings are achieved - Why standard adhesion tests are not adequate - Plastic grades must be carefully selected - Meeting the challenges of the new process - FIGURES : 1. Flow diagram showing hot the "DirectCoating" process operates - 2. A steering wheel cover (section) made by the new coating technology. The fine-grained texture is scratch-resistant, because the high-gloss areas are located only in the grooves - 3. Comparison of the conventional process, including spray coating, with the in-mould technology - 4.Correct substrate selection will optimise the adhesion of PU coatings En ligne : https://drive.google.com/file/d/1bMCCDX2pvZkDB6FNTK7_n4qb3KEJZpbo/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28281 [article]

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Short cycle times and high productivity for smart components / Christoph Bontenackels in KUNSTSTOFFE INTERNATIONAL, Vol. 111, N° 7 (2021)  

[article]  inKUNSTSTOFFE INTERNATIONAL > Vol. 111, N° 7 (2021) . - p. 50-53 Titre : Short cycle times and high productivity for smart components : Direct coating with polyurethane coatings creates opportunities in design and functionality Type de document : texte imprimé Auteurs : Christoph Bontenackels, Auteur ; Ulrich Fehrenbacher, Auteur ; Ingo Kleba, Auteur ; Markus Mechtel, Auteur ; Olaf Zöllner, Auteur Année de publication : 2021 Article en page(s) : p. 50-53 Langues : Anglais (eng) Catégories : Adhésion Matières plastiques dans les automobiles Polycarbonates Polymères -- Surfaces Polyuréthanes Revêtement autoréparant Temps de cycle (production) Index. décimale : 668.4 Plastiques, vinyles Résumé : Classic coating techniques such as spray painting are reaching their limits in the production of functionally highly integrated and elegantly decorated plastic parts. In contrast, the process chain of the direct coating process has now been optimized. Self-healing, fast-curing PU casting coatings and polycarbonate compounds that adhere firmly to each other even after aging are now available for this manufacturing process. Note de contenu : - Great freedom of design for surfaces - Specially adapted materials for the DC process - Self-healing surfaces - High transparency allows for the integration of light and sensors - Ensuring the adhesive strength between PU and PC - Tools for filling simulation - Automotive industry appreciates the DC process - Fig. 1 : White light interferograms of a scratch mark: after 48 hours, the scratch is no longer visible due to the self-healing effect - Fig. 2 : Transparency in combination: comparative transmission measurements show that Makrolon and Puroclear ideally complement each other with their respective high transparency - Fig. 3 : Results obtained in the POSI adhesion test for the combination of a standard PC and PU coating (1) and for the combination of a Makrolon Class A product type with a puroclear standard coating (2) and with a puroclear coating system optimized for PC (3) (hydrolytic storage for 72 h at 90 °C and 95 % humidity) - Fig. 4 : The demonstrator for the control panel of a center console with inductive button functions was produced in the DC process using back injection molding of a printed Makrofol PC film, and the surface was finished with a puroclear-based deep gloss - Fig. 5 : Simulation of DC mold filling using the example of a sample board (red = PU coating, blue = air): if surface structures are integrated into the PU coating, air pockets can form in the coating as a result of the coating being advanced in thicker areas. If, on the other hand, the surface structures are in the PC substrate, no air pockets are formed in the PU coating due to the uniform wall thickness and flow front - Fig. 6 : Simulation of warpage using the example of a sample panel: if the surface structures are in the PU coating, increased warpage can occur due to the greater shrinkage potential in the thicker PU coating areas. However, warpage is largely avoidable if the surface structures are incorporated into the PC substrate and thus the PU wall thickness is homogeneous and low En ligne : https://drive.google.com/file/d/1lagCAoxRfEOSdVVCskygBSlIwgyHFyTo/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36288 [article]

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The effect of weathering and thermal treatment on the scratch recovery characteristics of clearcoats / Christopher M. Seubert in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 7, N° 2 (03/2010)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 7, N° 2 (03/2010) . - p. 159-166 Titre : The effect of weathering and thermal treatment on the scratch recovery characteristics of clearcoats Type de document : texte imprimé Auteurs : Christopher M. Seubert, Auteur ; Mark E. Nichols, Auteur ; K. Henderson, Auteur ; Markus Mechtel, Auteur ; Thomas Klimmasch, Auteur ; Torsten Pohl, Auteur Année de publication : 2010 Article en page(s) : p. 159-166 Note générale : Bibliogr. Langues : Américain (ame) Tags : 'Peinture  automobile'  Clearcoat  Uréthane  'Résistance  éraflure'  'Nano-éraflure'  'Macro-éraflure'  Guérison Index. décimale : 667.9 Revêtements et enduits Résumé : The scratch and scratch recovery characteristics of two clearcoats, a polyurethane and an acrylic/melamine/silane clearcoat, were measured by a variety of methods. On most size scales tested, the polyurethane possessed superior scratch and mar resistance. The polyurethane also possessed improved scratch recovery after warming for 2 h at 60°C. After 2000 h of accelerated weathering, the scratch recovery characteristics of the polyurethane were largely maintained, while the acrylic/melamine/silane showed a significant drop in scratch recovery performance. Performance of both coatings was related to T g, hardness, and crosslink density. DOI : 10.1007/s11998-009-9190-4 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-009-9190-4.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9062 [article]

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Who shines the longest ? / Markus Mechtel in EUROPEAN COATINGS JOURNAL (ECJ), N° 5 (05/2021)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 5 (05/2021) . - p. 28-35 Titre : Who shines the longest ? : 95 automotive clearcoat systems were tested with dry and wet scratching - before and after weathering - and for their chemical resistance The tests of this benchmark study revealed considerable differences between the systems Type de document : texte imprimé Auteurs : Markus Mechtel, Auteur ; Tanja Hebestreit, Auteur Année de publication : 2021 Article en page(s) : p. 28-35 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Automobiles -- Vernis Essais de résilience Rayures Résistance à l'abrasion Résistance chimique Index. décimale : 667.9 Revêtements et enduits Résumé : Clearcoats form the outermost of usually fourlayers in automotive OEM coatings. In 2019, around 310 000 metric tons of clearcoat were consumed worldwide for this purpose. 40% were two-component (2K) polyurethane (PU) coatings, 390% one-component (1K) TSA coatings (thermosetting acrylics). The remainder was divided among 1K technologies of various chemistry, namely acid-epoxy, carbamate and PU-modified TSA systems. Note de contenu : - The tests - Wet scratched : the result - Table 1 : Participating coating systems - Table 2 : Wet scratching of non-weathered automotive clearcoats (2K systems : green background, 1K systems : blue background) - Fig. 1 : Number of coatings tested, ordered by chemical technology - Fig. 2 : Wet scratching of the unweathered paint surfaces, before and after 2h heating to 60°C - Fig. 3 : Wet scratching before and after 1000 h weathering - Fig. 4 : Dry scratching for all 2K PU systems investigated - Fig. 5 : Nano-scratch tests for all tested automotive clearcoats - Fig. 6 : Test for chemical resistance, classified according to exposed chemicals and chemical technologies of the coatings En ligne : https://drive.google.com/file/d/1ozXnvCQMhZgFsdR4E17cxskvkolUYItI/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35854 [article]

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