Dépouillements

Polypyrrole : synthesis, modifications and applications / A. G. Badgujar in PAINTINDIA, Vol. LXI, N° 8 (08/2011)

[article]  inPAINTINDIA > Vol. LXI, N° 8 (08/2011) . - p. 53-66 Titre : Polypyrrole : synthesis, modifications and applications Type de document : texte imprimé Auteurs : A. G. Badgujar, Auteur ; V. A. Bambole, Auteur ; Prakash A. Mahanwar, Auteur Année de publication : 2011 Article en page(s) : p. 53-66 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Electrochimie Polymérisation Polypyrroles Index. décimale : 667.9 Revêtements et enduits Résumé : Polypyrrole (PPy) is one of the most promising materials for multifunctionalized applications. The present paper reviews the synthesis, modifications and applications of polypyrrole (PPy). In addition, the PPy composites and coating of different materials like polymers, polymer particles, ion-exchange membranes, glass, fiber and textile, micro and nano materials with polypyrrole are described in details according to synthetic method and their applications. At the same time, effects of various parameters such as doping, anions, additives, and oxidant, on the PPy properties are also concerned. In this review, ion exchange membranes are highlighted. Note de contenu : - Electrochemical polymerization. - Synthesis and modification of polypyrroles by electrochemical polymerization and their applications : Synthesis, properties and applications of PPy - PPy based composites and their applications - PPy based membranes - Synthesis and modification of polypyrrole by chemical polymerization and their applications : Polymer - Glass - Polymer particles - Fiber and textile - Ion-exchange membranes - Micro and nanostructured materials. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11872 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
13282	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Polyurea coatings and its versatile nature / Mukesh Kathalewar in PAINTINDIA, Vol. LXI, N° 8 (08/2011)

[article]  inPAINTINDIA > Vol. LXI, N° 8 (08/2011) . - p. 67-75 Titre : Polyurea coatings and its versatile nature Type de document : texte imprimé Auteurs : Mukesh Kathalewar, Auteur ; Amey Bhogale, Auteur ; Suraj Mare, Auteur Année de publication : 2011 Article en page(s) : p. 67-75 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Elastomères Polyurée Revêtements protecteurs Index. décimale : 667.9 Revêtements et enduits Résumé : Polyurea is an elastomer that is obtained by mixing two reactive components : an isocyanates component and an amine component. Two-component polyurea elastomeric coating systems are the newest technology to the protective coating industry. Polyurea coatings give exceptional physycal properties such as high hardness, flexibility, tear and tensile strength, chemical and water resistance ; which are even better compared to polyurethane and epoxy coatings. A major advantage of polyurea coatings is the fact thay they set within a matter of seconds and take just a few hours to cure through. This allows surfaces coated with polyurea to be reopened for use without any limitations after just 24 hours. Unlike other spray coatings, polyurea systems can also be applied in humid and low-temperature outdoor conditions. Polyurea systems are used as spray-applied protective or wear coatings in various industrial applications, for example in the construction of tanks and industrial buildings, roads and bridges, in hard landscaping and in interior fitting. Note de contenu : - POLYUREA CHEMISTRY : Raw materials - Aromatic based polyurea (1. Isocyanate - 2. Diluents) - Resin blend or amind blend side - Polyetheramines - Chain extenders - Aliphatic based polyurea - Additives - Isocyanate reaction with water - Diamine & carbonic acid derivative - Polyurea vs polyurethane - Epoxy vs polyurea - Development in polyurea (1. Polyaspartic ester based polyurea - 2. Silicone modified polyurea - 3. The use of UV stabilizers in aliphatic polyurea - 4. Polyurea using 2, 4'-MDI isocyanate isomers - 5. Colored polyureas - 6. Low-pressure applied polyurea) - Polyurea application - Polyurea addition - Myths - Application scope for polyurea (a. Building and construction - b. Infrastructure - c. Transport - d. Others). Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11873 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
13282	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Nano TiO2 - Small is beautiful / Anita Das in PAINTINDIA, Vol. LXI, N° 8 (08/2011)

[article]  inPAINTINDIA > Vol. LXI, N° 8 (08/2011) . - p. 77-81 Titre : Nano TiO2 - Small is beautiful Type de document : texte imprimé Auteurs : Anita Das, Auteur Année de publication : 2011 Article en page(s) : p. 77-81 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Dioxyde de titane Nanoparticules Nanotechnologie Index. décimale : 667.9 Revêtements et enduits Résumé : Nanotechnology is considered to be one of the most important future technologies that will redesign the future of several technologies, products and markets. Because of its potential to change fundamentally whole field of technology, it will not only influence the technological development in near future but will also have decisive economic, ecological and social implications. The term nano has become a buzzword in all industries. Coating industry is also not an exception for this. In order to achieve many herculean tasks in coatings a radically different approach is needed and nanotechnology is looked upon as a good weapon for this. Various nanoscale materials are available for coatings. These materials said to have unique and potentially valuable properties in comparison to larger than nanoscale materials. Of these materials, nanosize titanium dioxide is of great interest because it exhibits many modified optical and electronic properties as well as many extensive coatings applications. Note de contenu : - INTRODUCTION TO NANOTECHNOLOGY - NANO TIO2 - SYNTHESIS OF NANO TIO2 : Synthesis of TiO2 nano particles by mesoporous aggregates of anatase - Synthesis of TiO2 nanoparticles with pure brookite at low temperature - Synthesis of titanium di-oxide from peroxotitanate solution - Synthesis of TiO2 by sol-gel - Sonochemical preparation of TiO2 nanoparticles - Synthesis and photoluminescence of well dispersible anatase TiO2 nanoparticles. - CHARACTERIZATION OF NANO TIO2 - APPLICATION OF NANO TIO2 : Paints & coatings - Cosmetics - Water purification - Market share of nano TiO2. - HEALTH & SAFETY ASPECTS IN HANDLINGN NANO TIO2 - OCCUPATIONAL EXPOSURE LIMITS FOR NANO TIO2 - SAFE HANDLING Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11874 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
13282	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Green technology for the construction industry - two component waterborne polyurethane coatings / Prashant Gangwar in PAINTINDIA, Vol. LXI, N° 8 (08/2011)

[article]  inPAINTINDIA > Vol. LXI, N° 8 (08/2011) . - p. 91-96 Titre : Green technology for the construction industry - two component waterborne polyurethane coatings Type de document : texte imprimé Auteurs : Prashant Gangwar, Auteur Année de publication : 2011 Article en page(s) : p. 91-96 Langues : Anglais (eng) Catégories : Chimie écologique Formulation (Génie chimique) Hydrophilie Polyisocyanates Polymères en émulsion Polyols Polyuréthanes Revêtements bi-composant:Peinture bi-composant Revêtements en phase aqueuse:Peinture en phase aqueuse Index. décimale : 667.9 Revêtements et enduits Résumé : The world is changing. Green technology has become an imperative of corporate responsibility and a milestone on the road to future sustainability. An increasing number of market players share this view, and analysts, investors and the general public expect to see assertive action from the industry. Due to pressure from the public and the media, green technology has escalated very quickly into a megatrend in the global marketplace. What began as an "eco-trend" has entered the mainstream in response to consumer demand. The market for green products is ramping up rapidly and relentlessly. Bayer MaterialScience recognized this trend early on, and it has positioned itsel at the forefront of the new movement. Waterborne polyurethane coatings have started to repeat the success story of Bayer's well known Desmodur and Desmophen coatings raw materials. Within the construction industry, applications for both walls and floors have perfectly proven the fact that the performance of the green generation products is fulfilling all the requirements. A toolbox of polyol dispersions and requirements. The coatings can be easy-to-clean or anti-graffiti, for application on exterior/interior walls, interior walls for hospitals, schools & kindergartens, electronic plants, food processing workshops, kitchens, metro stations, etc. They can also bu used as the topcoat of floor coatings for commercial and industrial areas with excellent abrasion resistance, scratch resistance & chemical resistance. Real life cases will be analysed in this article as well. Note de contenu : - BASIC MECHANISM - HYDROPHILIC POLYISOCYANATES - TYPICAL FORMULATIONS AND DISCUSSION : NCO/OH ration - NCO reacting with water - Discussion pot life - Tough tub flexible - Stain resistance/dirt pick up resistance - Discussion : Fungus/algae resistance - REAL LIFE CASES : Floor of bubble bar - Floor of bayer (Makrocolor) - Replacement of blackboard with 2K WB PU in a school in India - Exterior walls of Bayer Jinling polyurethane plant - Interior walls of bathroom - Others. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11875 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
13282	-	Périodique	Bibliothèque principale	Documentaires	Disponible