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Titre : Film formation - a different view Type de document : texte imprimé Auteurs : M. Veeramani, Auteur Année de publication : 2016 Article en page(s) : p. 80-84 Langues : Anglais (eng) Catégories : Emulsions
Formation de film
Latex
Liants en phase aqueuse
Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- AdditifsIndex. décimale : 667.9 Revêtements et enduits Résumé : In coatings science the understanding and modelling of film formation are paramount to the rapid optimization of waterborne formulations. This proves especially true in the design of coatings with targeted properties that meet required VOCs. In 1946 when Dow Chemical Co. first introduced latexes to the coatings market, there was an immediate need for understanding film formation from waterborne polymeric particles. Note de contenu : - MINIMUM FILM FORMING TEMPERATURE : Flexibility - Dirt retention/film thermo plasticity - Practical measurement/determination - Film formation model En ligne : https://drive.google.com/file/d/1WdH-5qf2BHUG1pah_7snIEQJCKp6DhsW/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35154
in PAINTINDIA > Vol. LXVI, N° 12 (12/2016) . - p. 80-84[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 18735 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Formulating of interior emulsion paints Type de document : texte imprimé Auteurs : M. Veeramani, Auteur Année de publication : 2018 Article en page(s) : p. 108-110 Langues : Anglais (eng) Catégories : Formulation (Génie chimique)
Revêtements décoratifs:Peinture décorative
Revêtements en phase aqueuse:Peinture en phase aqueuse
Revêtements intérieurs:Peinture intérieureIndex. décimale : 667.6 Peintures Résumé : In the previous chapter we discussed the formulating principles and analysed the Water-based Primer with typical formulations of exterior & interior primer. Now let us go on to the interior emulsion paint formulation. Applying a coat of paint is an art. Every hue breathes a fresh wave of emotion, bringing your walls to life and filling your home with vibrant energy. These paints have to be of low VOC, anti-bacterial and anti-fungal properties, easy washability, hiding, durability and more. Emulsion or dispersion paints are plastics dispersion paints (usually acrylic paints) in which the organic binder is dispersed in water. These may vary in terms of degree of gloss from mattto semi-glossy. They are applied to the surfaces to be coated by roller or brush, and sometimes by spraying. The paint formulations depend on whether they are intended for interior or external use. An important criterion for the selection of the binders is the minimum film forming temperature (MFT). It indicates the temperature above which, a continuous film is formed. Only incomplete film formation will take place below this limiting temperature. Styrene-acrylic dispersions (e.g. 50% in water) are very often used as binder. These form largely water-resistant films which also have good resistance properties in the un-pigmented form. A short recapitulation of what we discussed earlier on the production process is as follows. En ligne : https://drive.google.com/file/d/1vb0yLdSnWZgXIHSRfFxGTNyi8u_edhcL/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30327
in PAINTINDIA > Vol. LXVIII, N° 1 (01/2018) . - p. 108-110[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19766 - Périodique Bibliothèque principale Documentaires Disponible
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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 ratioEn ligne : https://drive.google.com/file/d/1ZlxdKF45XAY0whKcZzofLooVqJSAuy8T/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29754
in PAINTINDIA > Vol. LXVII, N° 11 (11/2017) . - p. 100-104[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19480 - Périodique Bibliothèque principale Documentaires Disponible Formulating principles of water-based paint / M. Veeramani in PAINTINDIA, Vol. LXVII, N° 12 (12/2017)
[article]
Titre : Formulating principles of water-based paint Type de document : texte imprimé Auteurs : M. Veeramani, Auteur Année de publication : 2017 Article en page(s) : p. 110-114 Langues : Anglais (eng) Catégories : Formulation (Génie chimique)
Revêtements en phase aqueuse:Peinture en phase aqueuseIndex. décimale : 667.9 Revêtements et enduits Résumé : So far we saw the fundamental principles of formulating water - based paint and the implications of various raw materials in a formulation. We also saw the major formula component calculations, PVC and CPVC and their impact in a formulation. Now let us proceed further to see how to formulate water based paint. Note de contenu : - Direct addition
- Pre-blending
- Typical formulation of water-based primer-exterior
- Typical formulation of water-based primer-interiorEn ligne : https://drive.google.com/file/d/1meSzrc3AEFrxdyQZj3vT0NqgEr12h52t/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29761
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Code-barres Cote Support Localisation Section Disponibilité 19479 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Formulation guidelines of bases : Water-based paints - 52 Type de document : texte imprimé Auteurs : M. Veeramani, Auteur Année de publication : 2019 Article en page(s) : p. 108-110 Langues : Anglais (eng) Catégories : Formulation (Génie chimique)
Revêtements (produits chimiques):Peinture (produits chimiques)
Revêtements en phase aqueuse:Peinture en phase aqueuseIndex. décimale : 667.9 Revêtements et enduits Résumé : Now let us turn our attention to the formulating principles of Bases. Every product, be it a final paint or an intermediate base, has to pass through the formulating principles clearly laid down. This means the percentage of principle ingredients are well defined apart from the formulation constants such as additives, which are more or less the same or constant for a given product. Percentage of additives such as Dispersing Agent, Wetting & Surfactant, and Defoamer etc. are more or less the same for white and bases for a typical product. The formulator has a bit of a difficult job to decide the percentage of principal raw material as he cannot sacrifice the final quality of the product whether it is white or bases which are post tinted. As th is would determine the final shade and its strength he has to do several trial and errors to arrive at the final formulation. En ligne : https://drive.google.com/file/d/1zCcn7PGknDb11wmN58MS4dPIDSyvWxRe/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32633
in PAINTINDIA > Vol. LXIX, N° 4 (04/2019) . - p. 108-110[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20967 - Périodique Bibliothèque principale Documentaires Disponible PermalinkFormulation principles of exterior emulsion paints / M. Veeramani in PAINTINDIA, Vol. LXVIII, N° 3 (03/2018)
PermalinkPermalinkPermalinkPermalinkIncreasing the functionality of architectural coatings / M. Veeramani in PAINTINDIA, Vol. LXXII, N° 3 (03/2022)
PermalinkPermalinkPermalinkPermalinkPermalinkPermalinkPermalinkPermalinkPermalinkOptimisation of rutile in water based paints / M. Veeramani in PAINTINDIA, Vol. LXX, N° 9 (09/2020)
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