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Self-healing in polymer coatings & composites : approaches and recent advancements / Sagar Pangam in PAINTINDIA, Vol. LXIV, N° 9 (09/2014)  

[article]  inPAINTINDIA > Vol. LXIV, N° 9 (09/2014) . - p. 53-60 Titre : Self-healing in polymer coatings & composites : approaches and recent advancements Type de document : texte imprimé Auteurs : Sagar Pangam, Auteur Année de publication : 2014 Article en page(s) : p. 53-60 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Conduction électrique Effet mémoire de forme Electrofilature Encapsulation Polymères autoréparants Polymères supramoléculaires Les polymères supramoléculaires sont des longues chaînes linéaires formées par assemblage réversible de composés de faible masse molaire. La réversibilité de l'association confère à ces matériaux des propriétés proches, mais complémentaires de celles des polymères classiques. En effet, dans les conditions d'utilisation, un polymère supra-moléculaire est en équilibre avec son monomère. Par conséquent, en modifiant légèrement les conditions expérimentales (solvant, concentration, température, cisaillement...), il est possible d'allonger ou de raccourcir les chaînes supramoléculaires et donc de changer les propriétés (rhéologiques, mécaniques...) du système. Cette particularité constitue un avantage pour de nombreuses applications potentielles, ainsi qu'une difficulté de caractérisation. Polyuréthanes Réseaux microvasculaires (matériaux) Revêtement autoréparant:Peinture autocicatrisante Index. décimale : 667.9 Revêtements et enduits Résumé : Polymers & polymeric composites are susceptible to formation of stress induced micro cracks during their service life, which often goes un-noticed during initial stages. Subsequent progression of micro-cracks to macro scale results in catastrophic failures of polymer coatings & composites. Timely detection and filling of micro-cracks will go a long way in ensuring the service life of surface coatings apart from reducing maintenance resources. Self healing functionality in surface coatings significantly reduces the probability of catastrophic failures by filling (healing) micro cracks as and when they form or immediately afterwards. This article reviews the various approaches towards self-healing functionality in surface coatings including some of the recent advancements which are potentially promising. Note de contenu : - SELF-HEALING : DEFINITION - MAJOR APPROACHES : Liquid phase healing - Microcapsulation - Phase separated healing agent - Self-healing filaments - Microvascular networks - Thermally remendable polymer - Thermoplastic/thermoset blend - Projectile puncture - RECENT ADVANCEMENTS : Shape memory effect - Supramolecular polymer - Nanoparticle migration - Electro hydrodynamics - Conductivity - Micron size gel particles - Coaxial electrospinning - QUANTIFYING HEALING EFFECTIVENESS - APPLICATIONS OF SELF-HEALING MATERIALS : Scratch gard coat by Nissan Motor Co. - Self-polyurethane coatings based on specific grades of Desmodur & Desmophen - Scratch shield iphone case En ligne : https://drive.google.com/file/d/1TN3ES5bGLCN95qKwYUH9o-lUdIYl7v4y/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22485 [article]

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Self-polishing anti-fouling marine coatings / Dhanalaxmi Mendon in PAINTINDIA, Vol. LXIV, N° 9 (09/2014)  

[article]  inPAINTINDIA > Vol. LXIV, N° 9 (09/2014) . - p. 61-70 Titre : Self-polishing anti-fouling marine coatings Type de document : texte imprimé Auteurs : Dhanalaxmi Mendon, Auteur Année de publication : 2014 Article en page(s) : p. 61-70 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Copolymère acrylate de zinc Revêtement autopolissant Revêtements antisalissures:Peinture antisalissures Index. décimale : 667.9 Revêtements et enduits Résumé : Bio-fouling on ship hulls is prevented by the use of antifouling paints. Anti-fouling has various mechanisms of which self-polishing types is receiving a great deal of attention world wide. The progressive abandonment of TBT self-polishing technology all over the world has led to the necessity of exploring new TBT-free i.e. environmentally safe horizons. The new metal-acrylate TBT-free systems are finding a new insight in this field where such coatings have found to be lasting for around 5 years. The foul release systems are the most attractive environmentally since they do not use biocides. Although they are considerably more expensive, they are now being used on fast vessel type, which are able to exploit the smoothness & that this technology will become increasingly important for control of fouling in the 21st century. Note de contenu : - THE SUCCESS OF TBT IS DUE TO FOLLOWING FACTORS - REQUIREMENTS FOR AN OPTIMAL ANTI-FOULING COATING : Alternatives to TBT-free coatings - Foul-release coating advantages/disadvantages - Tin-free self-polishing co-polymer (SPC) - Metal-acrylate TBT-free self polishing coatings (Cu-, Zn-Sl-Acrylate system) - Ionic exchange mechanism in zinc acrylate system (latest technology) - Zinc acrylate copolymers - Advantages of self-polishing coatings - NEW DEVELOPMENTS IN TBT-FREE ANTIFOULING TECHNOLOGY : Tin-free controlled depletion paints (CDPs) - Tin-free biocide containing self-polishing paints (TF-SPCs) - Future Technology En ligne : https://drive.google.com/file/d/1ODz3V70_8OnW0cAJWnRrE-Kk31SZrRw9/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22486 [article]

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Advance curing technology for coating by light emitting diodes (LED) / Vinita Dhake in PAINTINDIA, Vol. LXIV, N° 9 (09/2014)  

[article]  inPAINTINDIA > Vol. LXIV, N° 9 (09/2014) . - p. 74-82 Titre : Advance curing technology for coating by light emitting diodes (LED) Type de document : texte imprimé Auteurs : Vinita Dhake, Auteur Année de publication : 2014 Article en page(s) : p. 74-82 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Diodes électroluminescentes Photoréticulation Revêtements -- Séchage sous rayonnement ultraviolet:Peinture -- Séchage sous rayonnement ultraviolet Index. décimale : 667.9 Revêtements et enduits Résumé : UV LED Curing is a recently developed technology designed to improve the speed, performance and capabilities of a wide variety of curing applications. LED curing is expanding into sectors of the printing and coating market. Adoption of LED curing technology is most readily seen in areas that a small curing area is needed or the presence of heat in the curing process produces problems. The first part of this article contains overview of UV LED lamps and also the technology. The second part of this series provides challenges and benefits of UV LED lamps and also the comparison of LED and mercury lamps. This article will also focus on understanding and measuring the output of UV-LED. Note de contenu : - MARKET FOR UV LED - LED - LED CURING - PERFORMANCE OF LAMP : Energy input and measured UV output - Measurement of UV LED curing system - MEASURING IRRADIANCE AND DOSE - CURE RATE ANALYSIS - UV LED CURING ADVANTAGES - LIMITATIONS OF UV LED CURING TECHNOLOGY - TYPICAL LED CHALLENGES - DES VS. LAMPS - APPLICATION OF UV LED : Printing application - Coating application - Application in adhesives En ligne : https://drive.google.com/file/d/1qmbBL1ijzLSPFAnuIWhoOvq9VgpsAyT6/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22487 [article]

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Water based gloss enamel using PRIMAL HG emulsions sustainable and safer alternative to solvent based enamel / Girish A. Bhagwat in PAINTINDIA, Vol. LXIV, N° 9 (09/2014)  

[article]  inPAINTINDIA > Vol. LXIV, N° 9 (09/2014) . - p. 16-89 Titre : Water based gloss enamel using PRIMAL HG emulsions sustainable and safer alternative to solvent based enamel Type de document : texte imprimé Auteurs : Girish A. Bhagwat, Auteur Année de publication : 2014 Article en page(s) : p. 16-89 Langues : Anglais (eng) Catégories : Brillance (optique) Formulation (Génie chimique) Revêtement émail:Peinture-émail Revêtements en phase aqueuse:Peinture en phase aqueuse Revêtements intérieurs:Peinture intérieure Index. décimale : 667.9 Revêtements et enduits Résumé : In a household painting job, emulsion paint is generally used on walls and solvent based paint or popularly known as "Solvent based Enamel" is used on doors, windows, grills or even sometimes in kitchens and bathrooms. In fact fifty years ago, virtually ail paints used were solvent based paints. Today, advances in Emulsion Polymers have resulted in the development of water based enamel that can look and perform like solvent based paints when applied, not only on walls but also, on wood & metal. While water based emulsion paints are safer to use for both health and environmental point of view, use of solvent based paints add to environmental and safety concerns. Major reason for their use till now is that they were economical and emulsion polymers had not yet been developed to deliver equivalent performance. This trend of using Water based Enamel Paints already exists in developed countries and is now catching up in India too. The purpose of this article is to appraise the reader, the benefits of water based enamel and harmful effects of Solvent based paints on environment and human health and also the efforts Dow Coating Materials Note de contenu : - Solvent and its harmful effects - Water based enamel - a safer alternative - Formulation considerations for water based high gloss paints using PRIMAL HG emulsions : Determining water vapor permeability of enamels - Water vapor permeability - Eco labels, certifications - Physical properties of PRIMAL HG 91 and PRIMAL HG 93 - Guideline formulation of water based enamel on PRIMAL HG 91 - Guideline formulation of water based enamel on PRIMAL HG 93 - Properties of water based enamel in comparison to solvent based En ligne : https://drive.google.com/file/d/1a_jPT2utlruWAPOG2wOBfv3A_LFJ9ZoC/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22501 [article]

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Operational manual for flow cup viscometer / Mukund Hulyalkar in PAINTINDIA, Vol. LXIV, N° 9 (09/2014)  

[article]  inPAINTINDIA > Vol. LXIV, N° 9 (09/2014) . - p. 96 Titre : Operational manual for flow cup viscometer Type de document : texte imprimé Auteurs : Mukund Hulyalkar, Auteur Année de publication : 2014 Article en page(s) : p. 96 Langues : Anglais (eng) Catégories : Rhéologie Unités de mesure -- Tables de conversion Viscosimètres Viscosimétrie Index. décimale : 532.05 Mécanique des fluides et des liquides - Dynamique (cinétique et cinématique) Note de contenu : Viscosity conversion table En ligne : https://drive.google.com/file/d/1-J4TkYqtNNyjKrwX7zq98BT6YqyNXho5/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22502 [article]

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High performance protective coatings - IV / Mukund Hulyalkar in PAINTINDIA, Vol. LXIV, N° 9 (09/2014)  

[article]  inPAINTINDIA > Vol. LXIV, N° 9 (09/2014) . - p. 98 Titre : High performance protective coatings - IV Type de document : texte imprimé Auteurs : Mukund Hulyalkar, Auteur Année de publication : 2014 Article en page(s) : p. 98 Langues : Anglais (eng) Catégories : Epoxydes Mastics Matériaux hautes performances Revêtements protecteurs Index. décimale : 667.9 Revêtements et enduits Résumé : In the last 4-5 issues we are discussing about epoxy. Given here is the formulation of Rusto-Mastic Epoxy. Also given is the method of how to find Epoxy Equivalent Weight. A specially formulated high build surface tolerant epoxy mastic coating for application over manually cleaned rusted surfaces. Rusto mastic is the best available maintenance coating which not only tolerates firmly adhering, which need not to be removed as it is compatible with most of them. En ligne : https://drive.google.com/file/d/1iOtt1OSJtAupgMQTIIa1DlspRN4qUdBR/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22503 [article]

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Basics of corrosion and protection of structures using organic coatings / P. K. Kamani in PAINTINDIA, Vol. LXIV, N° 9 (09/2014)  

[article]  inPAINTINDIA > Vol. LXIV, N° 9 (09/2014) . - p. 102-109 Titre : Basics of corrosion and protection of structures using organic coatings Type de document : texte imprimé Auteurs : P. K. Kamani, Auteur Année de publication : 2014 Article en page(s) : p. 102-109 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anticorrosion Corrosion Métaux -- Revêtements protecteurs Revêtements organiques Index. décimale : 667.9 Revêtements et enduits Résumé : The philosophy and chemistry of corrosion has made a great progress in recent years. The economics, safety & regulations of operating equipment and conservation of limited material resources cause seriousness of corrosion. The corrosion; vulture of metallurgy, is the biggest challenge before the world where 10-12 percent of the metal is lost. This loss can be mitigated by suitable coatings and timely inspection of the coatings with the available technology. The organic coating is the cheapest and simplest mode of mitigating corrosion if its selection and application is done judiciously. The interface between a metallic substrate and an organic adherent, be it a coating or an adhesive, is of crucial importance in determining the performance of that system. The problem should be full, understood and analyzed by those who are confronted with it, otherwise the preservation of corrosion will remain largely a question of "hit and miss" with more misses than hits. Note de contenu : - UNDERSTANDING CORROSION : 1. The mechanism of corrosion process (a. chemical corrosion - b. Electro-chemical corrosion) - 2. The nature of the environment - 3. The type of the corrosion deterioration - 4. The type of the corrosion reactions - PAINTING OF HIGHWAY BRIDGES AND STRUCTURES MADE OF IRON : Protective coatings (1. Barrier coating - 2. Sacrificial coatings - 3. Inhibitive coatings) - Mechanism of protection by zinc rich primer - Corrosion monitoring techniques - Salt spray test (ASTM B117) - Open circuit potential (OCP) - Electrochemical impedance spectroscopy (EIS) En ligne : https://drive.google.com/file/d/1WQeSfcwK9GNY5TXn4UYPuKJjbu6ifk4t/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22504 [article]

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