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PAINTINDIA . Vol. LXI, N° 5Mention de date : 05/2011Paru le : 15/05/2011 |
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Ajouter le résultat dans votre panierThe microbiological spoilage of emulsion paints during manufacture and its prevention / John Gillatt in PAINTINDIA, Vol. LXI, N° 5 (05/2011)
[article]
Titre : The microbiological spoilage of emulsion paints during manufacture and its prevention Type de document : texte imprimé Auteurs : John Gillatt, Auteur Année de publication : 2011 Article en page(s) : p. 52-57 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antimicrobiens
Ateliers de peinture industrielle -- Nettoyage
Contamination microbienne
Revêtements en phase aqueuse:Peinture en phase aqueuseIndex. décimale : 667.6 Peintures Résumé : Microbiological spoilage of aqueous based surface coatings can result in severe economic loss to the manufacturer if it happens during production, with even greater problems occuring if such growth is not noticed until the paint reaches the end user.
The effects of bacterial and fungal activity are viscosity loss, gassing, malodour and visible surface growth. In addition, discolouration and alteration in the rheology of the formulation can result in the product being unacceptable to the customer.
As well as these obvious problems, caused by growth of bacteria and fungi, the presence of microbially producted enzymes can lead to changes in the product long after manufacture. Breakdown of cellulosic thickening agents may, therefore, result in viscosity loss even after the micro-organisms causing it have been destroyed by the addition of a biocide.
In addition, changes in manufacturing practice, product types and raw material composition during the pasto two decades have resulted in paint formulations becoming more susceptible to bacterial and fungal growth in the wet state.
These factors, combined with the continuing trend towards lower toxicity, more environmentally acceptable biocides, which tend to be less persistent in the manufactured product, have resulted in increased incidences of microbial infection.
The use of ever increasing concentrations of more highly active biocides is not the complete answer to these problems. Instead, the producer, with the help of the biocide manufacturer product, have resulted in increased incidences of microbial infection.
The use of ever increasing concentrations of more highly active biocides is not the complete answer to these problems. Instead, the producer, with the help of the biocide manufacturer, must critically look at the whole production operation from a microbiological point of view.
Improvements in plant hygiene, including examination and possible modification of plant design and more frequent and thorough cleaning, including a biocidal wash, will help of the biocide mnaufacturer, must critically look at the whole production operation from a microbiological point of view.
Improvements in plant hygiene, including examination and possible modification of plant design and more frequent and thorough cleaning, including a biocidal wash, will help to alleviate problems. Changes in production practices, such as avoiding storage of stock thickener solutions and careful monitoring of raw materials will bring about further improvements.
These activities, allied with the use of effective broad spectrum biocides, will at least decrease incidences of microbiological contamination and at best eliminate such infection altogether.Note de contenu : - Emulsion paint production
- Raw materials
- Manufacturing procedures
- Microbial growth in the can
- Causative organisms
- Prevention
- Biocide use
- Biocide typesPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11844
in PAINTINDIA > Vol. LXI, N° 5 (05/2011) . - p. 52-57[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 013221 - Périodique Bibliothèque principale Documentaires Disponible Shining prospect of polyurethane in auto OEM clear coats / Anup Phalke in PAINTINDIA, Vol. LXI, N° 5 (05/2011)
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Titre : Shining prospect of polyurethane in auto OEM clear coats Type de document : texte imprimé Auteurs : Anup Phalke, Auteur Année de publication : 2011 Article en page(s) : p. 59-63 Langues : Anglais (eng) Catégories : Automatisation
Automobiles -- Vernis
PolyuréthanesIndex. décimale : 667.9 Revêtements et enduits Résumé : Innovation is one of the most important success factors to maintain a strong competitive position in the automotive market. New developments in coating raw materials by Bayer MaterialScience show that polyurethane has outstanding potential to provide such innovation, both in terms of performance and also to aid compliance with the increasingly stringent regulatory requirements of the future. This article will demonstrate the innovative contribution that polyurethane technology can make to automotive OEM coatings, covering the latest trends and developments. The article also presents a comparative study of polyurethane versus TSA technology. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11845
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Code-barres Cote Support Localisation Section Disponibilité 013221 - Périodique Bibliothèque principale Documentaires Disponible Effect of water vapour permeability on cathodic disbondment of pipeline coating materials / B. Duari in PAINTINDIA, Vol. LXI, N° 5 (05/2011)
[article]
Titre : Effect of water vapour permeability on cathodic disbondment of pipeline coating materials Type de document : texte imprimé Auteurs : B. Duari, Auteur ; D. Sarkar, Auteur Année de publication : 2011 Article en page(s) : p. 66-68 Langues : Anglais (eng) Catégories : Essais accélérés (technologie)
Essais de brouillard salin
Perméabilité
Pipelines -- Revêtements protecteurs
Revêtements protecteurs -- DétériorationIndex. décimale : 667.9 Revêtements et enduits Résumé : Cathodic protection (CP) is widely used internationally as a major corrosion mitigation technique in pipeline integrity. The use of protective coatings in conjunction with cathodic has been an extensive record of proven performance in the protection structure including underground pipelines, ships, underground storage tanks, pipings, and tank bottoms. The use of both a protective coating and a cathodic protection system presents unique design, installation and maintenance consideration. However, if the coating is not properly chosen there will be premature failure of adhesion between a coating and the material substrate which directly attributed to cathodic protection conditions. This paper will discuss about the correlation of vapour permeability with the extent of cathodic disbondment of different coating materials under accelerated conditions. Note de contenu : 1. Sample preparation
2. Method followed for salt spray test (fog test)
3. Method followed for cathodic disbondment test of accelerated coating materials
4. Method followed for water vapour permeability for the accelerated coating material
OBSERVATIONS : 1. Analysis of the effect of salt spray (fog)test & cathodic disbondment test - 2. Analysis of the effect of salt spray (fog)test & water vapour permeabilityPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11846
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Code-barres Cote Support Localisation Section Disponibilité 013221 - Périodique Bibliothèque principale Documentaires Disponible Recent developments in UV cure photoinitiators / R. D. Kulkarni in PAINTINDIA, Vol. LXI, N° 5 (05/2011)
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Titre : Recent developments in UV cure photoinitiators : Part II - Bimolecular abstractable photoinitiators Type de document : texte imprimé Auteurs : R. D. Kulkarni, Auteur ; Mayur Chaudhari, Auteur ; S. Mishra, Auteur Année de publication : 2011 Article en page(s) : p. 72-80 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Photoamorceurs (chimie)
Revêtements -- Séchage sous rayonnement ultravioletTags : 'Photoinitiateurs bimoléculaires' Benzophénones Tioxanthones Anthraquinones '?-kéto coumarin' '1, 2 système dikétone' 'Séchage UV Index. décimale : 667.9 Revêtements et enduits Résumé : Bimolecular photoinitiators are those aryl-aryl ketone derivatives, which upon irradiation, abstract hydrogen ion from a coinitiator generating coinitiator derivated radical which in turn initiate photopolymerisation. Present review, which is third in the series on UV cure coatings, covers structure, activity, cleavage mode, cure performance, physical characteristics, trade names, advantages and drawbacks, as well as a detail accounting of all the recent research investigation and innovations in reference to the following Type II PI systems : benzophenone(s), (thio)xanthones(s), anthraquinones, α-keto coumarin, 1, 2 diketone derivatives. in addition, new commercial photoinitiators, launched during last decade, have been evaluated for their role in enhancement of curing efficiency. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11847
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