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Moisture cured urethane coatings - A review / Shashidhar Dayanand Thoutu in PAINTINDIA, Vol. LXIV, N° 4 (04/2014)  

[article]  inPAINTINDIA > Vol. LXIV, N° 4 (04/2014) . - p. 51-57 Titre : Moisture cured urethane coatings - A review Type de document : texte imprimé Auteurs : Shashidhar Dayanand Thoutu, Auteur Année de publication : 2014 Article en page(s) : p. 51-57 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Polyuréthanes Réticulation à l'humidité Revêtements:Peinture Index. décimale : 667.9 Revêtements et enduits Résumé : Moisture curable one component polyurethane coatings are versatile products having numerous advantages over two component polyurethane coatings. The concepts, chemistry have been discussed, with some examples and feedback from International market, specifically from USA, where these products are in use by Federal Government department, for number of applications, mainly to save labour, time and money, resulting in early completion of projects, without major shutdown. Special attention given to 1) the coatings chemistry, 2) the effects of ambient temperature and humidity on drying time,3) Steps needed for manufacturing storage stable moisture curing polyurethanes coatings, and 4) Suitable applications for moisture cured polyurethanes. Note de contenu : - POLYURETHANE TECHNOLOGY : Major classification - Type of polyurethane coatings - One component - TYPE II - MOISTURE CURED POLYURETHANE COATINGS : Background - Moisture-curing chemistry - Formulating one-component moisture-cure coatings - Formulation - Additives - Manufacturing step for a successful moisture cured coating - Processing and application - Performance of MCU primers containing fillers and extenders - Coating properties of moisture cured polyurethane : 1. Adhesion - 2. Adhesion to damp surfaces - 3. Chemical and solvent resistance - Other mechanical properties - Range of moisture cure polyurethane - 1. Aluminium - 2. Micaceous iron oxide - 3. Zinc dust - Moisture curing polyurethane used as top coat - Moisture cure polyurethane coating for new constructions and as maintenance coatings - MOISTURE-CURE POLYURETHANES - LATEST DEVELOPMENTS IN VOC-FREE CONFORMAL COATINGS En ligne : https://drive.google.com/file/d/1fzDvhkxBJhbsSp63mkLacHsCQUf4qt4Y/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21346 [article]

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Isolation and identification of sulphate reducing bacteria from spoilt paint / Amit Bhattacharya in PAINTINDIA, Vol. LXIV, N° 4 (04/2014)  

[article]  inPAINTINDIA > Vol. LXIV, N° 4 (04/2014) . - p. 64-68 Titre : Isolation and identification of sulphate reducing bacteria from spoilt paint Type de document : texte imprimé Auteurs : Amit Bhattacharya, Auteur ; Poonam Bukam, Auteur Année de publication : 2014 Article en page(s) : p. 64-68 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bactéries -- Identification Revêtements -- Détérioration:Peinture -- Détérioration Revêtements en phase aqueuse:Peinture en phase aqueuse Index. décimale : 667.9 Revêtements et enduits Résumé : Water Based paints are susceptible to biodegradation during their manufacture which gives rise to In- can spoilage problem (Ravikumar et al., 2012). Majorly bacteria, fungi and yeast are responsible for in-can spoilage. Among bacteria members of Enterobacteraceae, and Pseudomonadaceae family are widely encountered during isolation of bacteria from spoilt paint. Both facultative anaerobic bacteria like Escherichia, Proteus and Klebsiella as wel I as anaerobic bacteria like sulphate reducing bacteria (SRBs) can thrive in paint and may give rise to in-can spoilage (Paulus, 2005). Due to their highly versatile nutritional requirements for growth, water based paints contain sufficient nutrients to enable microbes to multiply even in adverse conditions. In this study a brief description of the isolation an SRB strain from a spoilt paint sample and its identification using the Biolog microbial identification system is presented. The strain, CACI-1, was identified as a Desulfonomonas spp. The present article can serve as an attempt to develop alternate methods to reveal the presence of sulphate reducing bacteria in paint samples. Note de contenu : - Sample - Enumeration, isolation and purification of SRB - Detection of H2S gas in paint samples En ligne : https://drive.google.com/file/d/1IAZ-BxlRH03Vf6EZ-_tspmxzsOvpnchi/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21347 [article]

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Next generation high-performance polymeric grinding resins for architectural coatings / Thomas Schoenbacher in PAINTINDIA, Vol. LXIV, N° 4 (04/2014)  

[article]  inPAINTINDIA > Vol. LXIV, N° 4 (04/2014) . - p. 70-72 Titre : Next generation high-performance polymeric grinding resins for architectural coatings Type de document : texte imprimé Auteurs : Thomas Schoenbacher, Auteur ; Morris Bingham, Auteur ; Armin Temel, Auteur ; Bernhard Hirschmann, Auteur ; Philippe de Micheli, Auteur Année de publication : 2014 Article en page(s) : p. 70-72 Langues : Anglais (eng) Catégories : Coût -- Contrôle Coût de production Fragmentation Mélanges (chimie) Pigments Plan d'expérience Polymères Revêtements en bâtiment:Peinture en bâtiment Index. décimale : 667.9 Revêtements et enduits Résumé : Paint manufacturers are increasingly using color pastes in as many coating formulations as possible. Pastes can be blended with one another or added to binders and other components and thus incorporated into a paint formulation in a relatively short time. The mixing of smal I batches, elimination of expensive cleaning operations and the reduction of the raw material inventories, machinery occupancy and space requirements leads to lower manufacturing costs. En ligne : https://drive.google.com/file/d/1QLjc4IXYJn15twODHJmgriPqUVwteROq/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21348 [article]

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Paradigm shift in wet stage protection of water based paints / Chirag B. Waghela in PAINTINDIA, Vol. LXIV, N° 4 (04/2014)  

[article]  inPAINTINDIA > Vol. LXIV, N° 4 (04/2014) . - p. 74-86 Titre : Paradigm shift in wet stage protection of water based paints Type de document : texte imprimé Auteurs : Chirag B. Waghela, Auteur Année de publication : 2014 Article en page(s) : p. 74-86 Langues : Anglais (eng) Catégories : Antimicrobiens Biofilms Chimie écologique Composés organiques volatils Hygiène Microorganismes Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- Additifs Index. décimale : 667.9 Revêtements et enduits Résumé : There is an increase in demand of eco-friendly biocides in the world due to increase in awareness about eco¬friendly products. Eco-friendly products are consisting of ingredients which are not harmfui to environment, like animais, soif, microbiological ecosystem, plants, aquatic animais & plants etc. Same is applied to paints. Paint contains mainly two components which are harmfu 1 to environment, biocides & Volatile Organic Compounds. VOC can be replaced by higher boiling point solvents. But in case of biocides it is seen that eco-friendly biocides are not as effective as harmful biocides at same concentration. Some of them are very sensitive to pH & temperature fluctuations (as low as 40° C & pH 8), which renders paint unprotected alter a particular time period. Also a tolerance & resistance is observed in microbes for few green biocides. At least 15 to 20 years time period is required to invent, to study & to register new molecule for different uses. So there is need of finding ways, alternatives & implementing stringent hygiene guidelines & awareness in view of introducing Eco-friendly biocides. Note de contenu : - ROLE OF MICROORGANISMS IN PAINT INDUSTRY : Bacteria - Fungus - Algae - FACTORS CAUSING SPOILAGE OF PAINT IN WET STAGE : Temperature & pH fluctuations - Packaging material - Accidental spillages and leakages - MICROBIAL CONTAMINATION IN PAINTS : In-process contamination - Malpractices in market - MECHANISM OF PAINT SPOILAGE BY BIOLOGICAL MEANS - MERITS & DEMERITS OF PAINT PRESERVATIVES - TRENDS TOWARDS GREEN BIOCIDES - HISTORY - NEGATIVE ASPECTS OF 1ST (OLD) GENERATION BIOCIDES : Mercury - Heavy metal biocides cause - PCP (pentachlorophenol) - Formaldehyde - ATTRIBUTES OF ECO-FRIENDLY BIOCIDES - CURRENT TRENDS IN BIOCIDES INDUSTRY - DISADVANTAGES OF ECO-FRIENDLY BIOCIDES : Hygiene of processing unit - Source of water - Recycled raw materials or recycled products - Raw material storage & handling - Mixing, milling and reaction vessels and their associated piping systems - Pipelines - Joints & dead ends - TREND FOR FUTURE - EXAMPLES OF QUICK KILLING BIOCIDES En ligne : https://drive.google.com/file/d/1tAkzDoqJkRE0Yx_jEd73fH38rRgGtjZA/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21349 [article]

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Forms of corrosion : caustic embrittlement and liquid metal embrittlement - Part 12 / P. K. Kamani in PAINTINDIA, Vol. LXIV, N° 4 (04/2014)  

[article]  inPAINTINDIA > Vol. LXIV, N° 4 (04/2014) . - p. 102-106 Titre : Forms of corrosion : caustic embrittlement and liquid metal embrittlement - Part 12 Type de document : texte imprimé Auteurs : P. K. Kamani, Auteur Année de publication : 2014 Article en page(s) : p. 102-106 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bases (chimie) Corrosion chimique Matériaux -- Fissuration Métaux liquides Nitrate de sodium Phosphate de sodium Index. décimale : 667.9 Revêtements et enduits Résumé : Caustic embrittlement also known as caustic cracking of a metal is the result from contact with an alkaline solution on the hand when certain metals exposed to other metals in the liquid (or solid) state, are susceptible to a phenomenon known as liquid (or solid) metal embrittlement (LME/SME), or liquid metal induced embrittlement or liquid metal cracking (LMC). In this Embrittlement the loss of ductility, in normally ductile metals, takes place. Liquid metals are frequently used as heat transfer medium because of their excellent heat-transfer properties, such as high thermal conductivities, high heat capacities, and low vapour pressures. Many theories have been proposed for LME/SME.http://en.wikipedia.org/wiki/Liquidmetal_embrittlement - cite note-Kolman-3 Most of them utilize the concept of an adsorption-induced surface energy lowering of the solid metal as the central cause of LME/SME. Note de contenu : - CAUSTIC EMBRITTLEMENT : Addition of sodium phosphates - Addition of sodium nitrate - Addition of crack resisting-steel - LIQUID METAL EMBRITTLEMENT (LME) - PREVENTION OF ZINC EMBRITTLEMENT : Metallurgy - Physico-chemical properties - Examples of embrittlement - Condition for LME En ligne : https://drive.google.com/file/d/18S7YTQdb3Tbu8LHgtqG5xqurHr_alozp/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21350 [article]

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Mathematics in paint technology - IX / Mukund Hulyalkar in PAINTINDIA, Vol. LXIV, N° 4 (04/2014)  

[article]  inPAINTINDIA > Vol. LXIV, N° 4 (04/2014) . - p. 94-96 Titre : Mathematics in paint technology - IX : Calculations related to paint machinery Type de document : texte imprimé Auteurs : Mukund Hulyalkar, Auteur Année de publication : 2014 Article en page(s) : p. 94-96 Langues : Anglais (eng) Catégories : Broyeurs à billes Calcul Pigments Index. décimale : 667.9 Revêtements et enduits En ligne : https://drive.google.com/file/d/1fhvJnp-h5ItusyRLXkzpBzg6IO9l6cZs/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40374 [article]

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In the ocean of marine paints - V / Mukund Hulyalkar in PAINTINDIA, Vol. LXIV, N° 4 (04/2014)  

[article]  inPAINTINDIA > Vol. LXIV, N° 4 (04/2014) . - p. 98 Titre : In the ocean of marine paints - V : Coatings for the bottom of the ships Type de document : texte imprimé Auteurs : Mukund Hulyalkar, Auteur Année de publication : 2014 Article en page(s) : p. 98 Langues : Anglais (eng) Catégories : Bateaux -- Revêtements:Bateaux -- Peinture Epoxydes Marines (peinture) Revêtements antisalissures:Peinture antisalissures Revêtements organiques Index. décimale : 667.6 Peintures Résumé : Paint technoiogists shouid be very thankful to great scientist Sir Humphry Davy, and Michael Faraday for their valuable contribution in this field and their invention. In January 1824 almost 2 centuries back Sir Humphry Davy put forward his findings that iron and copper, and for that matter any other metal in sait water where oxygen is prevent, forms galvanic cells and one metal or the other is gradually dissolved, depending on the scale of intervention in the galvanic series. He proved that the traces of Zinc or even cheaper malleable iron could be placed in contact with water and thereby prevent corrosion. Although being the bottom of the Ship, it is a priority to save this bottom from corrosion and fouling. Always being underwater it is a challenge to the paint formulator on devising methods to protect damage from pitting as propellors are made of brass and are in the vicinity, Zinc anode protects the paint only if the points are having alkali resistance. Earlier Coal tar epoxy was used having 350 microns DFT, but now days this has changed and pure epoxies are used as the coal tar has proved to be carcinogenic. Usually, Sealer coat is applied before antifouling to get smooth finish. En ligne : https://drive.google.com/file/d/1JjSlnh_CnSA_i6Ll2oQwiiUmKWnQWKpo/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40375 [article]

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