Corrosion protection of underground pipelines and other structures / Abhijit Singh in PAINTINDIA, Vol. LXVI, N° 12 (12/2016)  

[article]  inPAINTINDIA > Vol. LXVI, N° 12 (12/2016) . - p. 99-108 Titre : Corrosion protection of underground pipelines and other structures Type de document : texte imprimé Auteurs : Abhijit Singh, Auteur ; Durgesh Kumar Soni, Auteur ; P. K. Kamani, Auteur Année de publication : 2016 Article en page(s) : p. 99-108 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anticorrosion Epoxydes Pipelines -- Corrosion Revêtements protecteurs Tuyauterie Index. décimale : 667.9 Revêtements et enduits Résumé : Corrosion of underground pipelines and other buried structures takes place by the electrochemical processes. Various factors are responsible for the corrosion of underground pipelines like dissimilar metals in the pipelines, variation of the nature of soil, different surface conditions of the pipelines, electrolysis and due to the attack of different groups of bacteria. Different methods were applied to protect the buried structures from corrosion like application of protective coatings which included hot applied coatings, cold applied coatings and cathodic protection (CP). The development of coating in every sphere e.g. formulation, manufacturing and application has elongated the life of underground structure. Note de contenu : - FACTORS AFFECTING THE CORROSIVITY OF SOILS - THEORY OF CORROSION - TYPES OF NATURAL CORROSION : Dissimilar metals - VARIATION OF THE NATURE OF SOIL : Dissimilar surface conditions - Electrolysis - BACTERIAL CORROSION - CORROSION PROTECTION OF BURIED PIPELINES BY APPLICATION OF COATINGS : Hot applied coatings - There are three types of coated and wrapped pipes - Cold applied coatings - Industrial tapes - Liquide coatings - Recent developments - High temperature resistance epoxy - Low temperature cure epoxy - Damp surface epoxy - CATHODIC PROTECTION : History - The principles of cathodic protection - Cathodic protection can be achieved in two ways - Advantages and uses of cathodic protection - Basic requirements for cathodic protection - DESIGH FACTORS : Initial considerations - Potential level and distribution - Economics of decisions - Problems to be avoided - Types of equipment En ligne : https://drive.google.com/file/d/1UuisUbHbcuHPgm_SrkAzc4MIXustsnuN/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28017 [article]

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Gelcoat used in fibre reinforced composite structure and effect of including nanofillers in it / Abhijit Singh in PAINTINDIA, Vol. LXVII, N° 3 (03/2017)  

[article]  inPAINTINDIA > Vol. LXVII, N° 3 (03/2017) . - p. 53-60 Titre : Gelcoat used in fibre reinforced composite structure and effect of including nanofillers in it Type de document : texte imprimé Auteurs : Abhijit Singh, Auteur ; Durgesh Kumar Soni, Auteur Année de publication : 2017 Article en page(s) : p. 53-60 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Charges (matériaux) Composites à fibres Formulation (Génie chimique) Gelcoat Index. décimale : 667.9 Revêtements et enduits Résumé : Most surface coating application begins with the structure or article to be coated. The surface needs to be prepared sa as to remove contaminants that would detract the adhesion of the coating. However, there are one type of surface coating system that is used in quite opposite manner. These coatings are called gelcoats. They are used in such a way that substrate is built up onto the coating se that the gelcoat becomes an integral part of the article to be produced. The optimal dispersion of the nanofillers in the resin is a key factor for achieving the aforementioned properties. Note de contenu : - GELCOAT - COMPOSITION OF GELCOATS : Polyester resin - Monomer - Thixotropes - Fillers - Pigments - Accelerators - Catalyst - Other additives - CURING OF GELCOAT - APPLICATION METHODS : Spray application - 'Hot pot' guns - Catalyst injection - GELCOAT THICKNESS - MANUFACTURING OF FRP OR COMPOSITE PRODUCTS : Mold releasing mechanism - EFFECT OF NANO FILLERS IN GELCOAT : Viscosity - Tensile tests - Fracture test - Weatherometer test - ADVANTAGES OF GELCOATS - DEFECTS IN GELCOAT - APPLICATIONS : Boat painting - Mold use - Splatter finish - TABLE : Shows the thickness for gelcoat for various applications - FIGURES : 1. Mould on which gelcoat is to be applied - 2. Mixing the two components of gelcoat - 3. Application of gelcoat on mould - 4. Application ofresin on gelcoat, fabrication then binding the fabrication with resin - 5. Separation of mould from gelcoat - 6. Volume conductivity properties of the nanomodified gelcoats versus the reference gelcoat - 7. Log-log plot of the rheology properties of the epoxy gelcoats - 8. Stress-strain curves of the epoxy gelcoats - 9. Weight loss data of weatherometer test of the nano-modified gelcoats versus the reference gelcoat En ligne : https://drive.google.com/file/d/1Mgx14NI4_jFiclv08Tbj8NUlVwXc6_DS/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28446 [article]

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