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Advances in coatings : setting trends for futuristic technology applications / Kunal C. Thakur in PAINTINDIA, Vol. LXVII, N° 11 (11/2017)  

[article]  inPAINTINDIA > Vol. LXVII, N° 11 (11/2017) . - p. 55-62 Titre : Advances in coatings : setting trends for futuristic technology applications Type de document : texte imprimé Auteurs : Kunal C. Thakur, Auteur ; Tushar K. Maiti, Auteur ; Kamakshi Christopher, Auteur Année de publication : 2017 Article en page(s) : p. 55-62 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Hydrophilie Hydrophobie Innovations Nanotechnologie Nanotubes Oléophobie Revêtement auto-nettoyant:Peinture auto-nettoyante Revêtement autoréparant:Peinture autoréparante Revêtements multicouches Index. décimale : 667.9 Revêtements et enduits Résumé : Technological innovation across the world is at a record pace and is bound to accelerate with years. Increase in global connectivity and networking have enabled multi-disciplinary research that is fuelling humankind's futuristic explorations. Versatility is a very important paradigm wherein one invention seeks to replace multiple functionality of not necessarily one but several equipment. In this context, advances in polymeric materials and coatings assume significance to solve challenges that are inherent to next generation society and machines. In this review, we share a few areas of advances in coatings that serve to enable the futuristic technology applications. Note de contenu : - Multi layered and self-healing coatings : Applications for driverless cars - Coatings with carbon nano tubes : Applications for invisible stealth aircrafts and high radiation zones - Quantum dot paints : Application for solar light harvesting community - Self-cleaning paints and coatings : Application to waterless washing of surfaces - FIGURES : 1. Technological advancement of human kind - 2. a) Mechanism of healing in a self-healing coating with encapsulated agents, b) the concept of a sticky car coating - 3. Structure of single walled and multi walled carbon nanotubes - 4. Three dimensional objects made invisible through coating made of carbon nano tubes - 5. Illustration of band gaps in a semiconductor, quantum dot and molecule - 6. Mechanism of dirt adhering to surface coatings - 7. Different states of wettability of surface - 8. Self-cleaning coatings a) Superhydrophiliic coatings for glass, b) Super hydrophobic-oleophobic paint cars En ligne : https://drive.google.com/file/d/1Ht_X4kmFR96oLU_ryw3cPIrDrjHMwcSP/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29731 [article]

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Corrosion prevention through pigmentory properties / Ruhee Anil Gharat in PAINTINDIA, Vol. LXVII, N° 11 (11/2017)  

[article]  inPAINTINDIA > Vol. LXVII, N° 11 (11/2017) . - p. 64-80 Titre : Corrosion prevention through pigmentory properties Type de document : texte imprimé Auteurs : Ruhee Anil Gharat, Auteur ; Sandesh Naresh Patil, Auteur Année de publication : 2017 Article en page(s) : p. 64-80 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anticorrosifs Anticorrosion Essais (technologie) Essais de brouillard salin Métaux -- Revêtements protecteurs Pigments inorganiques Pigments métalliques Index. décimale : 667.9 Revêtements et enduits Résumé : The inhibition efficiency of anticorrosive pigments such as zinc chromate, zinc phosphate, modified zinc phosphate and zinc-free compounds is dependant on their purity, solubility, morphology, types of ions, pigment-polymer interactions, pigment volume concentration, the environment surrounding them and the substrate. The ojective of this paper is to review the knowledge of these pigments and the state-of-the-art in terms of anticorrosive materials; this knowledge can be used to simplify the criteria for selecting anticorrosive pigments for a given application. It is well-know that the performance of a protective coating can distinctly be affected by incorporation of anticorrosive pigments. Therefore the choice of anticorrosive pigments used in conjunction with suitable binder systems plays a major role when trying to protect metals from corrosion by means of protective coatings. The most important role of anticorrosive pigments in protective coating technology is probably the control of corrosion, even though the degree of corrosion protection of a coating depends not only on the kind on the anticorrosive pigments used. The anticorrosive properties of seven phosphate based pigments, calcium exchange silica, chromate and a ferrite were assessed by electrochemical technoques and formulating solvent borne paints with epoxy and alkyd resins. One of the most important factors besides the pigment used is the resin system selected in order to formulate the coating. The functional pigments determine the role of the paint in the system. It can give enhance properties such as hardness or resistance against abrasion, impermeability and protection from UV radiation. In addition, anticorrosive pigments such as zinc dust play an active role in prevention steel from rusting. Extenders are the other solid components of a paint that are made up of substances that have a different chemical nature, grain-size and shape. Carefully chosen and mixed, they may be used to change a paints consitency for application purpose, rein forcres the film's mechanical and chemical strength and also to increase its hardness, its flexibility and its resistance against abrasion. Note de contenu : - CLASSIFICATION OF ANTICORROSIVE PIGMENTS : Inorganic anticorrosive pigments - ANTICORROSIVE PIGMENT OF TYPE I - ANTICORROSIVE PIGMENTS OF TYPE II - ANTICORROSIVE PIGMENTS OF TYPE III - MECHANISM OF CORROSION OF IRON : At anode - At cathode - PHOSPHATE PIGMENTS : Zinc Phosphate (Zn3(PO4)2) - Modified orthophosphate - Chromium phosphate: CrPO4.3H2O - Modified polyphosphates - CHROMATE-BASED COMPOUNDS : Strontium chromate - POWDER METAL COATINGS : Zinc-rich paints or primer - MOLYBDENUM BASED ANTICORROSIVE PIGMENTS : Phospho-molybdate pigments - METAL OXIDE PIGMENTS : Zinc and calcium ferrites: 2CaO.FeO3.&CaO.Fe2O3/Zn(MgO)O.Fe2O3. - Red lead - MULTIPHASE PHOSPHATE PIGMENTS : Zinc Hydroxyphosphite - Iron phosphide - LEAD & ZINC CYANAMIDE PIGMENTS - ANTICORROSIVE PIGMENTS BASED ON METAL ! Titanium Dioxide (TiO2) - STUDY OF PIGMENT WHICH IS TESTED BY SALT SPRAY METHOD & SHOWS GOOD RESULTS : Comparison studies between phosphate and modified orthophosphates - Comparison studies between polyphosphate and modified polyphosphate using salt spray method - REGULATORY AFFAIRS : Toxicology and occupational health - Environmental aspects - THE FUTURE - SMART COATINGS - NANOTECHNOLOGY - ENVIRONMENT FRIENDLY PAINTS AND PIGMENTS - INHIBITOR En ligne : https://drive.google.com/file/d/1_xIZay8fZWKdCZ1TkkdpOfLukeV0prQw/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29732 [article]

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Specialty pigment - Phosphorescent pigments / Yash Melkeri in PAINTINDIA, Vol. LXVII, N° 11 (11/2017)  

[article]  inPAINTINDIA > Vol. LXVII, N° 11 (11/2017) . - p. 82-84 Titre : Specialty pigment - Phosphorescent pigments Type de document : texte imprimé Auteurs : Yash Melkeri, Auteur Année de publication : 2017 Article en page(s) : p. 82-84 Langues : Anglais (eng) Catégories : Phosphorescence Pigments à effets spéciaux Thermochromie Index. décimale : 667.2 Colorants et pigments Résumé : Thermochromic pigments changes colour with change in temperature. The change in colour is because of change in crystal structure or change in molecular structure of the material, because of which the material absorbs or emits light of different wavelength. Thermochromic pigments are based on liquid crystal material, leuco dyes and inorganic materials. Liquid crystal based materials shows change in colour with temperature because of change in crystal structure with temperature. Leuco dyes based material changes molecular structure with temperature. Both liquid crystal material and leuco dyes are micro encapsulated. Inorganic materials show change in colour with temperature because of change in electronic porperties of compound. Liquid crystal based pigment are used in precision applications, as their responses can be engineered to accurate temperatures, but their color range is limited by their principle of operation. Leuco dyes based thermochromic materials have less accurate temperature response than liquid crystals. Thermochromic pigments find applications in paints, plastics, inks, fabric. Note de contenu : - Liquid crystal technology - Based on Leuco dyes - Inorganic materials - Uses of thermochromic pigments paints - Papers - Plastic polymers - Inks - Textile - FIGURES : 1. Thermochromism effect - 2. Thermochromic pigment based on leuco dyes in hyper colour - 3. Paints made from thermochromic pigment mixed with conventional pigment - 4. Paint made from blue themochromic pigment painted on plastic glass En ligne : https://drive.google.com/file/d/1DGOOmfWXoeMqSkWjojZtls29UYUZwu6u/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29745 [article]

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Paint industry - an analysis / Madan Sabnavis in PAINTINDIA, Vol. LXVII, N° 11 (11/2017)  

[article]  inPAINTINDIA > Vol. LXVII, N° 11 (11/2017) . - p. 85-88 Titre : Paint industry - an analysis Type de document : texte imprimé Auteurs : Madan Sabnavis, Auteur ; Bhagyashree C. Bhati, Auteur ; Mradul Mishra, Auteur Année de publication : 2017 Article en page(s) : p. 85-88 Langues : Anglais (eng) Catégories : Études de marché Peinture -- Industrie et commerce -- Inde Index. décimale : 667.9 Revêtements et enduits Résumé : In the financial year 2016-17, value of the paints industry grew by 8% on a y-y basis. This was backed by an improvement in disposable income, rising urbanization, focus on housing, rural growth, rise automotive segment, increasing trend of nuclear families etc. The growth of paints industry is dependant on the growth of its two segments, decorative and industrial. In the financial year 2017-28, factors such as roll out of Seventh Pay Commission, salary revisions by States, normal monsoon, schemes for affordable housing expected improvement in industrial output and growth in automotive segment are likely to augur well for the paints industry. CARE Ratings thus expects paints industry to grow by 8-10% in 2017-18. The profit margin of the industry increased by 300-450 basis points in 2015-16 supported by lower input costs. Crude oil derivatives and titanium dioxide are major inputs used in manufacturing of paints. In 2016-17, the industry however witnessed no major expenses weighed on the margins. While the outlook for demand remains positive for paints industry for 2017-18, concerns for the industry would remain on the raw materials front it the y-o-y growth in crude oil prices continues. Note de contenu : - Indian paints industry - Major segments of paints industry - Decorative paints - Industrial paints - Organised and unorganised paints segment - Water-based paints and solvent-based paints - Inputs used for manufacturing paints - Titanium dioxide - Imports of titanium dioxide - Financials of the paints industry En ligne : https://drive.google.com/file/d/1XwWc8T8-oM64iczbvAoMjGZrV23hL2uI/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29746 [article]

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Formulating principles of paint / M. Veeramani in PAINTINDIA, Vol. LXVII, N° 11 (11/2017)  

[article]  inPAINTINDIA > Vol. LXVII, N° 11 (11/2017) . - p. 100-104 Titre : Formulating principles of paint Type de document : texte imprimé Auteurs : M. Veeramani, Auteur Année de publication : 2017 Article en page(s) : p. 100-104 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : SO FAR we have seen the manufacturing process, testing and application techniques of water-based paints. Now let us turn our attention to a very important part of the paint chemistry, Formulation Water-based paints. In the earlier chapters I had dealt with in detail all the constituents that go into the manufacture of water-based paints and their functions in the paint. Now I will deal with a very important chapter on "how to formulate water-based paints ?" This includes all the products like Acrylic Washable Distemper, Water-based Primer, Interior and Exterior Paints and Hight end, and Prenimum Paints which are used in day to day application. One must know that broadly paint contains various constituents like Water, Additives, Pigments, Extenders and Binders. The effects of the physical properties of the components include, for instance, the role of the external phase viscosity on emulsion stability. These effects are well know or easy to ascertain in most cases and may be handled in a corrective or complementary fashion. they will not be discussed in detail in this chapter, which is dedicated to clarifying the coupled effects of the three other types of variables. Physichochemical formulation refers to intensive variables, whiwh are characteristics of the nature of the components, along with temperatiure and pressure. They determine the affinity or negative of the standard chemical potential of the different species-particularly the surfactant-in all phases at equilibrium. They determinate the phase behaviour, as well as interfacial properties such as tension or natural curvature. Although emulsions are systems out of mechanical equilibrium because they would finally end up in a separated two-phase system, the formulation is of paramount importance during the formulation of the emulsion and its useful lifetime. This is probably due to the emulsion persistence is large enough to attain physicochemical equilibrium between the phases. The main practical problem in formulation is the large number of components present in the paint. As a consequence a typical emulsion could contain scores of different chemical species; each of them is able to influence the formulation in a way not necessarily proportional to its concentration. Thus, even for a common place practical case, a systematic study could require thousands of research hours to be completed. This is why formulation has been considered an art rather than a science. This assessment has been changing with the growth of surface science in the past half-century and the uncovering of an extraordinarily rich variety of phenomena and structures in surfactant, polymer, and colloidal chemistry. However, most of the available knowledge is still too specific, simplistic, or naive to be useful to deal with the intricacies of even very simple practical cases. This is why a rational approach based on cause-and-effect trends has been favoured by formulators of emulsions and other systems involving surfactants, oils, and water when numerical relationships are not available. As proposed 50 years ago, the empirical hydrophilic- lipophilic balance (HLB) method has still its supporters because of its extreme simplicity, although it falls short of taking into account many factors. Now let me take you to the actual Formulation procedure and the grammar rules attached to it. First of all before proceeding to formulate a product one has to decide the parameters of the paint which is to be formulated. Main parameters are: PVC, Specific Gravity, percentage of principle raw material like Rutile and Emulsion etc. These parameters will determine the quality of the paint whether it is a primer or mid end or high end paint and so on. Once these parameters are specified the formulator proceeds further. Note de contenu : - Major formula component calculations - Other raw material functions and quatity - Critical pigment volume concentration (CPVC) - The PVC/CPVC ratio En ligne : https://drive.google.com/file/d/1ZlxdKF45XAY0whKcZzofLooVqJSAuy8T/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29754 [article]

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Importance of pH and it's measurements / Mukund Hulyalkar in PAINTINDIA, Vol. LXVII, N° 11 (11/2017)  

[article]  inPAINTINDIA > Vol. LXVII, N° 11 (11/2017) . - p. 106-108 Titre : Importance of pH and it's measurements Type de document : texte imprimé Auteurs : Mukund Hulyalkar, Auteur Année de publication : 2017 Article en page(s) : p. 106-108 Langues : Anglais (eng) Catégories : Epaississants Liants pH -- Mesure Index. décimale : 667.9 Revêtements et enduits Note de contenu : - pH interaction with binders - pH modifiers interaction with rheological modifiers - pH interaction with biocides - pH values - pH ranges of common indicators En ligne : https://drive.google.com/file/d/1Vi1hKnEt4Q45eqvb8Ob5BzkVBLlGVI4V/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29755 [article]

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Thermo setting acrylics (TSA) / Mukund Hulyalkar in PAINTINDIA, Vol. LXVII, N° 11 (11/2017)  

[article]  inPAINTINDIA > Vol. LXVII, N° 11 (11/2017) . - p. 110 Titre : Thermo setting acrylics (TSA) : Two wheelers & bicycle industries Type de document : texte imprimé Auteurs : Mukund Hulyalkar, Auteur Année de publication : 2017 Article en page(s) : p. 110 Langues : Anglais (eng) Catégories : Formulation (Génie chimique) Motocyclettes -- Peinture Polyacryliques Thermodurcissables Vélo -- Peinture Index. décimale : 667.9 Revêtements et enduits En ligne : https://drive.google.com/file/d/1wrPjDbiwfzO7QaWb3Cfw6MAOE-eOGmVe/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29759 [article]

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