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Studies on the properties of latex paints : Effect of part replacement of TiO2 with calcined clay extenders / Ramanuj Narayan in PAINTINDIA, Vol. L, N° 4 (04/2000)

[article]  inPAINTINDIA > Vol. L, N° 4 (04/2000) . - p. 33-38 Titre : Studies on the properties of latex paints : Effect of part replacement of TiO2 with calcined clay extenders Type de document : texte imprimé Auteurs : Ramanuj Narayan, Auteur ; K. V. S. N. Raju, Auteur Année de publication : 2000 Article en page(s) : p. 33-38 Note générale : Bibliogr. Langues : Anglais (eng) Tags : 'Matériau  revêtement'  'Peinture  eau'  émulsion'  'Matière  charge'  Argile  'Pigment  minéral'  'Titane  Oxyde'  Formulation  'Propriété  rhéologique'  Viscosité  optique'  'Pouvoir  couvrant'  'Résistance  intempérie' Index. décimale : 667.9 Revêtements et enduits Résumé : Titanium Dioxide, TiO2 being a prime pigment has been used extensively in the paint industry. The growing demand and increasing cost of TiO2 has driven the attention of paint technologists to search for other alternatives. There has been a continuous effort to replace part of TiO2 with fine particle size extenders in paint formulations. A detailed study has been undertaken to replace TiO2pigment by various percentages of calcined clays in two latex paint formulations. The properties like thixotropy, hiding power, light fastness, film brightness, scrub resistance and weather resistance has been determined to establish the optimum use of calcined clays in the paint formulation. Thixotropy, one of the important properties of latex paints has been studied with the help of the thixotropic loop area method. The viscosity data has also been analysed by Casson's equation. It has been found that the calcined clays can replace up to 20% TiO2 in paints formulation without having any adverse effect on their properties. Note de contenu : - Materials - Details of paint formulations - Preparation of paints - Viscosity measurements - Results and discussion : - Rheological properties - Thixotropic nature of paints - Analysis of data using Casson's equation - Optical properties : - Hiding power - Fatness to light - Film brightness - Scrub resistance - Humidity and accelerated weathering properties Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12722 [article]

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Corrosion in surface preparation and its inhibition by dehumidification / Jagdeep Singh in PAINTINDIA, Vol. L, N° 4 (04/2000)

[article]  inPAINTINDIA > Vol. L, N° 4 (04/2000) . - p. 39-42 Titre : Corrosion in surface preparation and its inhibition by dehumidification Type de document : texte imprimé Auteurs : Jagdeep Singh, Auteur Année de publication : 2000 Article en page(s) : p. 39-42 Langues : Anglais (eng) Tags : 'Matériau  revêtement'  'Peinture  anticorrosion'  Peinturage'  'Préparation  surface'  Déshumidification  'Protection  corrosion' Index. décimale : 667.9 Revêtements et enduits Résumé : The paper briefly outlines the concepts of corrosion and supports application of protective coatings as an effective tool for preventing it. Explaining the effect of high humidity while preparing the surface for coating, the need to control the moisture level of the surrounding air to prevent premature coating failure is identified. The paper concludes by proposing the use of dehumidifiers for removing moisture from air while preparing and coating the surface for improved coating performance. Note de contenu : - Surface preparation and coating - A tool for corrosion prevention - Dehumidification, an aid to surface preparation : Inside surface temperature of steel - Inside air dewpoint - Inside air relative humidity - Outside air temperatures - Outside air dewpoint - Outside air relative humidity - The dehumidifier Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12723 [article]

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Colour predictions in particulate matter from size and refractive index of particles / H. S. Shah in PAINTINDIA, Vol. L, N° 4 (04/2000)

[article]  inPAINTINDIA > Vol. L, N° 4 (04/2000) . - p. 43-52 Titre : Colour predictions in particulate matter from size and refractive index of particles Type de document : texte imprimé Auteurs : H. S. Shah, Auteur ; M. S. Roy, Auteur Année de publication : 2000 Article en page(s) : p. 43-52 Note générale : Bibliogr. Langues : Anglais (eng) Tags : 'Etude  théorique'  Colorimétrie  'Indice  réfraction'  'Dimension  particule'  'Réflexion  diffuse'  expérimentale'  Poudre  'Mélange  binaire'  ternaire'  Pigment Index. décimale : 667.9 Revêtements et enduits Résumé : A theoretical relation correlating particle size and refractive index with diffuse reflectance of particulate system is proposed. Fundamental optical and morphological parameters of particulate systems are determined. Colourimetric curves of seven single component and fifteen binary/ternary mixtures are experimentally measured and compared with predicted curves determined using proposed relation. Overall performance evaluation of the theoretical formulation is made by determining colour difference between measured and calculated curves. Results show that the proposed method satisfactorily work to assess the colourimetric curves of particulate matter. The theoretical technique will be useful to study the colour change due to variation in size in pigment dispersions or chemical powders. Note de contenu : - Experimental : Preparation of samples - Methods of measurements - Optical and morphological characterstics of particle : Particle size measurement - Determination of absorption index k - Results - Lambert-Beer absorption coefiecient of powdered samples - Reflectance spectra of single component system - Reflectance spectra of binary and ternary powdered mixtures Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12724 [article]

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Oil based inks for ink jet technology : advantages and challenges / Daniel Bien in PAINTINDIA, Vol. L, N° 4 (04/2000)

[article]  inPAINTINDIA > Vol. L, N° 4 (04/2000) . - p. 8186 Titre : Oil based inks for ink jet technology : advantages and challenges Type de document : texte imprimé Auteurs : Daniel Bien, Auteur Année de publication : 2000 Article en page(s) : p. 8186 Note générale : Bibliogr. Langues : Anglais (eng) Tags : Encre  Impression  'Dispositif  piézoélectrique'  Formulation  Liant  Hydrocarbure  Analyse  risque  Jet  encre Index. décimale : 667.9 Revêtements et enduits Résumé : ith the successes of the piezo drop on demand technology for ink jet in wide format printing, oil based inks are becoming more and more popular. Higher printing speed and lower maintenance costs are the main reasons. But can these inks be handled safely for man and the environment? Which physical properties of the hydrocarbon fluids are most important for printing speed and quality, as well as workers' safety? As well as these subjects, the presentation will cover basic formulations of oil based inks and compatibility with different papers. Note de contenu : - Ink jet technologies - Selection of the hydrocarbon fluid Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12731 [article]

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