Enhanced film performance in water based high PVC paints through strategic surface interactions of inorganic particulates and surfactants / Trisha Kaushik in PAINTINDIA, Vol. LXX, N° 11 (11/2020)  

[article]  inPAINTINDIA > Vol. LXX, N° 11 (11/2020) . - p. 55-66 Titre : Enhanced film performance in water based high PVC paints through strategic surface interactions of inorganic particulates and surfactants Type de document : texte imprimé Auteurs : Trisha Kaushik, Auteur ; Jisha Gangadharan, Auteur ; Ramesh Patil, Auteur ; Pravesh Kumar Gupta, Auteur Année de publication : 2020 Article en page(s) : p. 55-66 Langues : Anglais (eng) Catégories : Agents dispersants (chimie) Charges (matériaux) Composés inorganiques Epaississants Pigments Potentiel zeta Revêtements -- Propriétés mécaniques:Peinture -- Propriétés mécaniques Revêtements en phase aqueuse:Peinture en phase aqueuse Rhéologie Index. décimale : 667.9 Revêtements et enduits Résumé : Globally the trend is towards waterborne paints and paint industry is experiencing strong need of deriving maximum performance benefit through the interactions of the key building blocks of the formulations. The high PVC (pigment volume concentration) waterborne paints are very important in Indian context and thus needs more attention for the researchers and business equally. In typical high PVC waterborne paint the end performances are governed by the surface interactions of inorganic fillers and surfactant molecules causing various morphologies, surface conditioning and particle packing. These parameters in turn have profound effect on the end performances of coatings which include self-stability, rheology, optical properties, flow and levelling and mechanical properties of the dried film. In the present study, surfactants with varied molecular weights, functional groups, molecular arch itect and polarities are employed to understand the interactions with varied inorganic particulates commonly used in paint (carbonates, sulphates, silicates). The performance of the various experimental sets demonstrates the strong co-relation of the surfactant properties on the interactions with the inorganic particulates. Thus the trend analysis is useful tool for the formulator to strategize the composition for gain i ng maximum from the suitable interactions. Note de contenu : - OBJECTIVE - MATERIALS AND METHODS : Materials - Methods - Table 1 : Physico-chemical properties of extender - Table 2 : Physico-chemical properties of surfactant - Table 3 : Emulsion characteristics - Table 4 : Surfactant demand of extender - Table 5 : Surfactant demand for mid PVC system - Table 6 : Surfactant demand for high PVC system - The guideline formulations considered for experimentation are mentioned below - Table 7 : Optical properties of high PVC paints - Table 8 : Optical properties of mid PVC paints - Table 9 : Mechanical properties of high and mid PVC paints - Table 10 : ΔE-Color difference on mixing with hand vs Gyro shaker - Table 11 : Accelerated stability (hot box stability @55°C for 14 days) - Table 12 : Viscosity profile (brookfield/cone-plate/stormer) - Table 13 : Zeta potential of paint sample and extender solution - Table 14 : Shear rate dependent viscosity - Table 15 : 3ITT parameter - Table 16 : Covering capacity En ligne : https://drive.google.com/file/d/1RpKQNIUQYnhO-xyuSBuEB_EH8V5Kex5m/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35192 [article]

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