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Mar resistance : significance & role in predicting aesthetic life of coatings / Dayanand Puthran in PAINTINDIA, Vol. LXXI, N° 8 (08/2021)  

[article]  inPAINTINDIA > Vol. LXXI, N° 8 (08/2021) . - p. 55-68 Titre : Mar resistance : significance & role in predicting aesthetic life of coatings Type de document : texte imprimé Auteurs : Dayanand Puthran, Auteur Année de publication : 2021 Article en page(s) : p. 55-68 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Automobiles -- Revêtements Résistance à l'abrasion Résistance à l'usure Revêtements organiques Index. décimale : 667.9 Revêtements et enduits Résumé : The possibility of a long lasting durable coating that can retain its initial properties has always fascinated paint and polymer technologists. The clearcoats which are applied today on automotive vehicles is designed to provide a brilliant high gloss appearance with good mechanical, chemical and durability properties. A vehicle gets subjected to many damaging elements in the environment which contribute to scratch and mar damage of the coatings. The accumulative effect of mars, scratches and chipping deteriorates the appearance of the vehicle. Along with this, the chemical degradation occurring due to the environmental factors viz. weathering, high temperature and air pollutants causes changes in the coating's physical and performance properties. These aspects affect the aesthetic appeal of the coating system and have resulted in new challenges for the coating technologist. The present paper looks at the mar and scratch resistance behavior of coatings and detailed analysis made to characterize the defect and develop a good mar/scratch resistant coating. Note de contenu : - Difference between mar, scratch, abrasion, chip resistance and mar property assessment : Assessing mar resistance - Marring mechanism and its analysis - Role of chemical composition on mar resistance property - Role of weathering and temperature on mar resistance property - Methods to determine mar resistance - Test instruments used to characterize mar resistance - Correlation of lab test methods to mar performance - Approaches to improve mar resistance property En ligne : https://drive.google.com/file/d/1ongL6i4LLV-dibbRZukecmU69QoLBV07/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36385 [article]

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A review of different smart coatings / Mohit Katiyar in PAINTINDIA, Vol. LXXI, N° 8 (08/2021)  

[article]  inPAINTINDIA > Vol. LXXI, N° 8 (08/2021) . - p. 70-80 Titre : A review of different smart coatings Type de document : texte imprimé Auteurs : Mohit Katiyar, Auteur ; Durgesh K. Soni, Auteur ; Arun Maithani, Auteur Année de publication : 2021 Article en page(s) : p. 70-80 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Conducteurs organiques Matériaux intelligents Nanoparticules Peinture solaire Pigments Propriétés anti-empreintes Revêtement antireflet Revêtement auto-nettoyant Revêtement autoréparant Revêtement conducteur Revêtements antisalissures Revêtements organiques Thermochromie Index. décimale : 667.9 Revêtements et enduits Résumé : Today's coatings are becoming smarter day by day. They hold answers to some of unmet demands in different markets like automotive, industrial, marine, aerospace etc. And, it's really well sustained by intense growth of smart additives and new preparation methods. Smart Coatings are coatings, but with predefined properties and special films, which make them sense and respond to environment and other externat stimuli. Smart coatings are made of programmable materials with a variety of physical, chemical, electrical and mechanical properties. These materials can changes in light, pressure, chemical, heat along with other stimuli. Several smart coating systems have already been developed and examined, as a result they are currently under investigation by numerous laboratories and industries across the world. Examples of smart coatings include stimuli responsive, antimicrobial, antifouling, conductive, self-healing, and super hydrophobic systems. Note de contenu : - Self-cleaning coating - Anti-reflection coating - Anti-fouling coating - Anti-corrosive coating - Thermochromic coatings - Anti-fingerprint coating - Self-healing paint : Autonomous healing mechanisms-based on corrosion inhibitors - Non-autonomous healing mechanisms-based on dynamic bonds - Electrical conductive paint - Solar paint - Fig. 1 : Surface of a lotus leaf has a hierarchically rough structure - Fig. 2 : Liquid dros and uneven surface of lotus leaf - Fig. 3 : Scanning electron micrograph of lotus leaf. Schematic depicting the relationship between surface roughness and self-cleaning - Fig. 4 : Reflection and transmission of light rays - Fig. 5 : Examples of heavily fouled hulls - Fig. 6 : A multilayer structure of thermochromic coating - Fig. 7 : The coating becomes white, when is temperature reaches above the criticle temperature - Fig. 8 : DA reaction of TFAT ; SEM image of the coating showing thermally activated self-healing behavior En ligne : https://drive.google.com/file/d/1osla2mOTQvfZ2PXhAIsA5sm_j-7t_fZu/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36465 [article]

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Polyurethane dispersion technology for direct to metal coatings / Mrunal Vaidya in PAINTINDIA, Vol. LXXI, N° 8 (08/2021)  

[article]  inPAINTINDIA > Vol. LXXI, N° 8 (08/2021) . - p. 82-88 Titre : Polyurethane dispersion technology for direct to metal coatings Type de document : texte imprimé Auteurs : Mrunal Vaidya, Auteur Année de publication : 2021 Article en page(s) : p. 82-88 Langues : Anglais (eng) Catégories : Adhésion Application directe sur le métal Isocyanates Liants Métaux -- Revêtements protecteurs Polymères en émulsion Polyols Polyuréthanes Réactions chimiques Revêtements organiques Index. décimale : 667.9 Revêtements et enduits Résumé : Direct to Metal Coatings (DTM) is a rapidly growing segment of the coatings industry. This growth is related to cost reduction attributed to improved efficiency, time savings, fewer production steps and enhanced sustainability. These coatings are used in the heavy construction industry, building products and product finishing. Many of these applications require performance in demanding exposure conditions. Covestro has been able to provide solvent free aqueous polyurethane dispersions Bayhydrol which give the coating manufacturers a broad range of freedom to formulate their coatings and help them to surpass demands of current VOC and performance requirements. Note de contenu : - INTRODUCTION : "Simplifying a complex coating process" : Direct to metal coatings - How to select protective coatings - a) Binder selection - POLYOL REACTION PARTNER : KEY PROPERTIES CONTRIBUTION - ISOCYANATE REACTION PARTNER FOR PUD : Diisocyanates commonly used in PUDs - Adhesion to multiple metal sbustrates - PROCESSING ASPECTS FOR DIRECT TO METAL : Influence of processing aids - BENCHMARKING STUDY En ligne : https://drive.google.com/file/d/1yRwuQNJCeZaSsYPPtanDC-23r0nUqvwT/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36466 [article]

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Ernest Rutherford - Father of the nuclear age / Gail Carneiro in PAINTINDIA, Vol. LXXI, N° 8 (08/2021)  

[article]  inPAINTINDIA > Vol. LXXI, N° 8 (08/2021) . - p. 100-104 Titre : Ernest Rutherford - Father of the nuclear age Type de document : texte imprimé Auteurs : Gail Carneiro, Auteur ; Tanuja Parulekar, Auteur Année de publication : 2021 Article en page(s) : p. 100-104 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chimie -- Histoire Chimistes Décroissance radioactive Prix Nobel de chimie Radiochimie Radioéléments Rutherford, Ernest Index. décimale : 540 Chimie et sciences connexes Résumé : The 1908 Nobel Prize in Chemistry was awarded to the New Zealand born British physicist, Ernest Rutherford "for his investigations into the disintegration of the elements, and the chemistry of radioactive substances." En ligne : https://drive.google.com/file/d/1x6cJPOYQPa-3ZBRzt-L18cwaXxeukj8P/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36467 [article]

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Rheology for coatings / M. Veeramani in PAINTINDIA, Vol. LXXI, N° 8 (08/2021)  

[article]  inPAINTINDIA > Vol. LXXI, N° 8 (08/2021) . - p. 107-108 Titre : Rheology for coatings : Essential notions one need to know Type de document : texte imprimé Auteurs : M. Veeramani, Auteur Année de publication : 2021 Article en page(s) : p. 107-108 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Revêtements en phase aqueuse:Peinture en phase aqueuse Rhéologie Index. décimale : 667.9 Revêtements et enduits Résumé : While understanding the rheology of any formulation, clarity around the core fundamentals enables efficient management of the rheological properties of your product. Let us begin by understanding some fundamentals terms. What is viscosity ? Viscosity and rheology are often confused, and they are significantly different concepts. While rheology is the study of flow, viscosity, a part of rheology, can be obtained from rheological measurements. Viscosity is a measurement of the fluid's resistance to flow and a function of shear rate or stress, with time and temperature dependence. In rheological measurements, the strain rate is related to the measurement of the deformation and stress is related to the measurement of the for required to deform a material. Shear stress (τ; Pa), one of the main parameters studied in rheology, is the force per unit area that a fluid requires to start flowing. Shear rate (γ; s-1) describes the velocity gradient. It is the rate at which a fluid is sheared or "worked" during flow. Note de contenu : - Pseudo-plasticity - Newtonian fluids - Non-newtonian fluids - Thixotropic liquids - MEASURING RHEOLOGICAL PROPERTIES : Accurate temperature control - Narrow sample gap - Accurate speed measurement over a wide range - Oscillatory measurements - Predicting paint behaviour En ligne : https://drive.google.com/file/d/1fLobZFZ5eIbVuW4YBe37nZYrK_fzPonS/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36468 [article]

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Methods of identifying aromatic & aliphatic isocyanate / Mukund Hulyalkar in PAINTINDIA, Vol. LXXI, N° 8 (08/2021)  

[article]  inPAINTINDIA > Vol. LXXI, N° 8 (08/2021) . - p. 110 Titre : Methods of identifying aromatic & aliphatic isocyanate Type de document : texte imprimé Auteurs : Mukund Hulyalkar, Auteur Année de publication : 2021 Article en page(s) : p. 110 Langues : Anglais (eng) Catégories : Chimie analytique Composés aliphatiques Composés aromatiques Isocyanates Index. décimale : 667.9 Revêtements et enduits Résumé : Chemistry differentiates between aromatic and aliphatic isocyanates. This differentiation is justified by the difference in properties between these compounds and between their reaction products. En ligne : https://drive.google.com/file/d/1Lmp_-WjOjEXOcscPX76HiTkP2b1l3mVI/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36469 [article]

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In the world of wood - 2 / Mukund Hulyalkar in PAINTINDIA, Vol. LXXI, N° 8 (08/2021)  

[article]  inPAINTINDIA > Vol. LXXI, N° 8 (08/2021) . - p. 112 Titre : In the world of wood - 2 : French polish methylated spirit base Type de document : texte imprimé Auteurs : Mukund Hulyalkar, Auteur Année de publication : 2021 Article en page(s) : p. 112 Langues : Anglais (eng) Catégories : Alcool Bois -- Revêtements Formulation (Génie chimique) Gomme-laque Laque et laquage Méthanol Index. décimale : 667.9 Revêtements et enduits Résumé : French polishmethylated spirit base, th is is an age old product. French polish is a process, not just a material. The main material is shellac. Although there are several other shellac based finishes, notall are classified as French polishing. The French polish technique is an excellent method to accent exoticwood grain. This is resin dried and then made into solution in alcohol. This is liquid shellac. Shellac was confined to the far east until traders introduced it to Europe in the 1700s, however, it wasn't until "the 18 century that the technique of using Shellac was refined by The French, hence known as French Polishing". En ligne : https://drive.google.com/file/d/18YewQ7-CMFurTicu8E5wy0G90KbLJe-P/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36470 [article]

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Concrete protection system / Harish Agrawal in PAINTINDIA, Vol. LXXI, N° 8 (08/2021)  

[article]  inPAINTINDIA > Vol. LXXI, N° 8 (08/2021) . - p. 122-128 Titre : Concrete protection system Type de document : texte imprimé Auteurs : Harish Agrawal, Auteur Année de publication : 2021 Article en page(s) : p. 122-128 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anticorrosifs Matériaux cimentaires -- Revêtements protecteurs Plâtres Polymères Revêtements -- Additifs Revêtements organiques Index. décimale : 667.9 Revêtements et enduits Résumé : When the surface is exposed to atmospheric influences it is observed that the main damage factors are corrosion and carbonation, it is sufficient to cover the surface with cernentitious slurries for protecting concrete structures, facades and building interiors as well as minera) substrates. The cementations slurries helping to reduce the concrete carbonation process. To ensure long lasting durability, the exposure condition on a structure has an influential role on its durability. Decision to use or not a protective coating shall be taken after thorough consideration by selecting different types of coating system based on different polymers, Portland cernent and many other additives. Note de contenu : - Corrosion inhibitors (for reinforcement) - Coatings - Selection of various principles for coatings protection of concrete - Functional requirements of coatings - Types of coatings - Pigmented coatings based on acrylic emulsions - Clear sealer coating - Plaster systems - Solid plaster system - Polystyrene boarder - Finish coat - Water-based acrylics coatings - Acrylic coating for outdoor application - Outdoor coatings for other applications - Solvent-based acrylics - Anti-carbonation coatings - Carbonation prevention using anti carbonation coatings - Elastomeric traffic coatings - Textured coating - Epoxy coatings - Breathable epoxies - Urethane coatings systems - Flexible urethane coatings - Other specialized coatings - Best coatings for basement walls - Best coating for basement floors - Polyurea coatings - Silicones/silanes/siloxanes/silicates coatings En ligne : https://drive.google.com/file/d/1pDoQqNsWJ4R4X-awwHYaGIVC3sMou-Rl/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36471 [article]

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Confined space at work place / Pankaj Shah in PAINTINDIA, Vol. LXXI, N° 8 (08/2021)  

[article]  inPAINTINDIA > Vol. LXXI, N° 8 (08/2021) . - p. 138-140 Titre : Confined space at work place : Spectrum safety council's safety corner Type de document : texte imprimé Auteurs : Pankaj Shah, Auteur Année de publication : 2021 Article en page(s) : p. 138-140 Langues : Anglais (eng) Catégories : Accidents -- Prévention Espaces confinés Evaluation du risque Explosions -- Prévention Incendies -- Prévention Milieu de travail Risques pour la santé Sécurité du travail Travailleurs -- Protection Index. décimale : 620.8 Techniques de l'environnement du travail. Facteurs humains : ergonomie, sécurité du travail Résumé : Many workers are injured and killed each year while working in confined spaces. An estimated 60% of the fatalities have been among the would-be rescuers. A confined space can be more hazardous than regular workspaces for many reasons. To effectively control the risks associated with working in a confined space, a confined space hazard assessment and control program should be implemented for your workplace. Note de contenu : - What is a confined space ? - Is working in a confined space hazardous ? - What are the hazards in a confined space ? - Why is working in a confined space more hazardous than working in other workspaces ? - What should be done when preparing to enter the confined space ? - How are hazards controlled in confined spaces ? - How are fire and explosion prevented ? - What are other safety precautions ? En ligne : https://drive.google.com/file/d/1UCOBKOWGImfHokTw9JoA6UagawvsXRE9/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36472 [article]

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