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To automate the rating of paint blister / S. Swarnamala in EUROPEAN COATINGS JOURNAL (ECJ), N° 9/01 (09/2001)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 9/01 (09/2001) . - p. 16-21 Titre : To automate the rating of paint blister Type de document : texte imprimé Auteurs : S. Swarnamala, Auteur ; T. S. N. Sankara Narayanan, Auteur Année de publication : 2001 Article en page(s) : p. 16-21 Note générale : Bibliogr. Langues : Anglais (eng) Résumé : The present work aims to automate paint blister failure rating using image processing and neural network techniques. Photographic images of paint blisters after ASTM D 714-87 are acquired and processed using image processing techniques to extract the relevant features, specifically, the paint blister contours. The blister contours are used to estimate the feature histogram which is subsequently used as input to a two-stage trained neural network (Backpropagation Network) to assign the closest rating of the paint blister failure. Accuracy exceeding 70% is obtained in most of the cases. Note de contenu : - Paint failure rating system - Human eye can pick the relevant information from a scene and discard the remaining - For an automated system it is important that the size/distribution factors be quantified - The size-spread histogram determines the category the individual blisters belong - Multilayer-preceptron with backpropagation learning rule is used for classification and prediction tasks - Two stages of network : the 'Size Net' and the 'Dist Net' En ligne : https://drive.google.com/file/d/1_NcqxeOljeJS0TtOBAukIUPIxeZ7dJIm/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10939 [article]

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UV powder coatings for wood applications / Kris Buysens in EUROPEAN COATINGS JOURNAL (ECJ), N° 9/01 (09/2001)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 9/01 (09/2001) . - p. 22-29 Titre : UV powder coatings for wood applications Type de document : texte imprimé Auteurs : Kris Buysens, Auteur ; Keith Jacques, Auteur Année de publication : 2001 Article en page(s) : p. 22-29 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : New resins for UV powder coatings for wood based substrates, in particular for medium density fibreboard (MDF), but also for natural hardwood have been developed. Different types of finish are possible and the resultant coatings exhiblt a combination of unique properties. Note de contenu : - Technical and economic benefits - Conventional finishing of MDF : Multi-layer liquid coatings are costly - Paper laminates : High performance, but unsuitable for 3D substrates - Thermoplastic foil : high costs for high quality - UV powder coatings require lower and shorter heating - Resins and formulations - Extrusion and grinding parameters - Conventional spraying - Melting with a combination of IRM and convection heat - Curing at line speeds of 3-6 m/min - Application 1 - Textured finish for MDF : UV powder coatin gfulfils kitchen industri standard - Application 2 - High-gloss, smooth finish for MDF : Optimised flow through choice of heating parameters and primer - Performance comparable to textured finish - Application 3 - clear finishes on paper-laminated MDF : High performance with variable gloss - Application 4 - clear finishes for natural hardwood/veneered composite board En ligne : https://drive.google.com/file/d/1Y4CfrStbLOBaAi8zW416Fdu1auDODb9U/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10940 [article]

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Safer solvents for safer products / Gerald Altnau in EUROPEAN COATINGS JOURNAL (ECJ), N° 9/01 (09/2001)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 9/01 (09/2001) . - p. 39-44 Titre : Safer solvents for safer products Type de document : texte imprimé Auteurs : Gerald Altnau, Auteur Année de publication : 2001 Article en page(s) : p. 39-44 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : In order to improve not only environmental protection but also safety at work and product properties, there is a need to evaluate solvents according to their overall risk. This is in contrast to the present common practice of defining solvents' safety by whether they are VOC or non-VOC. Note de contenu : - How to choose the right solvent? - The vapour hazard ratio - Each european country has its own exposure limit - Safety data sheets En ligne : https://drive.google.com/file/d/1TnMvFGVjpvkk2H4kPCxor_GQs5mk7k6Z/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10941 [article]

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A second crosslinking strategy / Richard Jones in EUROPEAN COATINGS JOURNAL (ECJ), N° 9/01 (09/2001)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 9/01 (09/2001) . - p. 48-53 Titre : A second crosslinking strategy Titre original : Hybrid blocked isocyanates combine different chemistries leading to enhanced properties Type de document : texte imprimé Auteurs : Richard Jones, Auteur Année de publication : 2001 Article en page(s) : p. 48-53 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : The development of blocked isocyanates for thermally cured 1k polyurethane coatings strives to reduce the curing temperature, but simultaneously a good storage stability at room temperature must be kept. Hybrid blocked isocyanates combine chemically different blocking agents, thus avoiding some disadvantages of single systems, while maintaining the coatings performance. Note de contenu : - Two different unblocking reaction mechanisms - DEM blocked isocyanate solidifies - Combinations of blocking agents to enhance stability - Optimal OH : NCO stoichiometry is greater than 1.0 : 1.0 - Hybrid blocked isocyanates show a different molecular weight distribution - Crosslinked structure for DEM/DMP hybrids differs chemically - Cost effective formulations - Comparison with conventional blocking agents - Artificial weathering performance : Hybrids perform well - Yellowing on overbake : Poor MEKO performance - Acid Etch Resistance : Hybrids similar to MEKO - Small amounts of DEM increase overcoat adhesion drastically En ligne : https://drive.google.com/file/d/1E_Lq-ljZoyNCIdJtYxeK3sNk5BgwYbAp/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10942 [article]

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Microbial degradation / M. C. Zamponi in EUROPEAN COATINGS JOURNAL (ECJ), N° 9/01 (09/2001)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 9/01 (09/2001) . - p. 54-58 Titre : Microbial degradation Type de document : texte imprimé Auteurs : M. C. Zamponi, Auteur ; C. Cecchini, Auteur ; S. Silvi, Auteur ; A. Cresci, Auteur Année de publication : 2001 Article en page(s) : p. 54-58 Note générale : Bobliogr. Langues : Anglais (eng) Tags : 'Coating  material'  Varnish  'Ester  polymer'  Polyurethane  'Paint  film'  Biodegradation  Microorganism  'Experimental  study' Index. décimale : 667.9 Revêtements et enduits Résumé : In order to characterize the degradation behaviour of six commercial varnishes for wood, three polyester-based and three polyurethane-based, varnishes were incubated with a microbial pool. The study was carried out analyzing the ability of micro-organisms to grow utilizing the varnishes as substrate. Microbial growths were effective with all tested varnishes and they demonstrated a different trend depending on the type of varnish and the used media. Note de contenu : - Structures foreign to nature are difficult to degrade - Materials for decomposers - Microrganisms as decomposers - Identified microrganisms - Microbial growth on Minimal Medium(MBM) in the presence of varnishes - Biodegradation of varnishes - Morphological evaluation of the biodegradation of varnish films - Polyester-based varnishes support microrganisms growth - SEM shows the effect of microbial degradation En ligne : https://drive.google.com/file/d/1trHd1XaqSsUUpSsVIoU-ipZdSFTlZxJK/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10943 [article]

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To be always glossy / U. Schulz in EUROPEAN COATINGS JOURNAL (ECJ), N° 9/01 (09/2001)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 9/01 (09/2001) . - p. 60-71 Titre : To be always glossy Titre original : Changing of scratch and mar resistance by natural and artificial weathering Type de document : texte imprimé Auteurs : U. Schulz, Auteur ; V. Wachtendorf, Auteur ; T. Klimmasch, Auteur ; P. Alers, Auteur Année de publication : 2001 Article en page(s) : p. 60-71 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : Scratch and mar performance of automotive topcoats has become an increasing customer concern in recent years. The consumer expects that the coating of the car he bought does not lose its good appearance due to degradation of the scratch and mar resistance after only a short time period in service. Therefore, this paper focuses firstly, on the influence of weathering on the scratch and mar resistance and secondly, on changes in the visibility of the scratches under the influence of the weather. Examining a series of modern PU clearcoats natural and artificial weathering was applied before and after the scratch test. Scratching was carried out using two different scratch techniques. In comparison to other essential coating properties the scratch and mar resistance was the property that was most detrimentally affected by the weathering. Note de contenu : - Results of weathering before scratching (pre-weathering) - The higher the hardness the lower the scratch and mar resistance - Results of weathering after scratching(post-weathering) - The ability to reflow get lost increasingly with increasing duration of pre-weathering - Interaction of scratches and acid deposition during post-weathering - Correlation between the results of artificial and natural weathering En ligne : https://drive.google.com/file/d/1kwn_T0C0TZIHNsz4isPOXn86pC1P6Fvx/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10944 [article]

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Film formation in powder coatings / Thomas Brock in EUROPEAN COATINGS JOURNAL (ECJ), N° 9/01 (09/2001)  

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 9/01 (09/2001) . - p. 86-87 Titre : Film formation in powder coatings Type de document : texte imprimé Auteurs : Thomas Brock, Auteur ; Michael Groteklaes, Auteur ; Peter Mischke, Auteur Année de publication : 2001 Article en page(s) : p. 86-87 Langues : Anglais (eng) Catégories : Formation de film Revêtements poudre:Peinture poudre Index. décimale : 667.9 Revêtements et enduits Note de contenu : - Compromise between storage stability and cost-effective stoving - Melt viscosity and surface tension - Fig. 1 : Object temperature and viscosity of a powder coating vs. time during a stoving process - Fig. 2 : Correlation betweenthe surface quality of a powder coating and surface tension and melt viscosity En ligne : https://drive.google.com/file/d/1M-HIYY95hi4eZawa8WKpxWI3K5G-p4lb/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33497 [article]

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