Characterization of paint formulated using secondary TiO2 pigments recovered from waste paint / Mikael C. F. Karlsson in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 2 (03/2019)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 16, N° 2 (03/2019) . - p. 607-614 Titre : Characterization of paint formulated using secondary TiO2 pigments recovered from waste paint Type de document : texte imprimé Auteurs : Mikael C. F. Karlsson, Auteur ; Rubén Alvarez-Asencio, Auteur ; Romain Bordes, Auteur ; Anders Larsson, Auteur ; Phil Taylor, Auteur ; Britt-Marie Steenari, Auteur Année de publication : 2019 Article en page(s) : p. 607-614 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation Dioxyde de titane Peinture (produits chimiques) -- Recyclage Recyclage (déchets, etc.) Index. décimale : 667.9 Revêtements et enduits Résumé : The paint industry is continuously striving to reduce its environmental impact, especially when it comes to the major virgin white pigment, titanium dioxide (TiO2). In this work, recycled TiO2 pigment was used in a paint formulation as a replacement for pigment made from virgin raw materials. The paint was evaluated based on pH, Stormer and ICI viscosities, gloss, hiding power, and color characteristics. The paint films were also characterized by LVSEM–EDS, AFM, and profilometry. The most significant difference between a paint based on recycled pigments and a paint based on virgin pigments was the agglomeration of pigment particles which gave a reduction in gloss and a rougher surface of the dried paint film based on recycled pigment, and it could be concluded that the recycled pigment could not be used without accepting a small decrease in paint quality. This points toward two main directions: (1) the use of recycled pigment in applications with less demand on surface finish and gloss, such as ceiling paints, and (2) that further work on formulation should be carried out with the recycled pigment as for any other new pigment introduced in a paint formulation to optimize its performance. Note de contenu : - MATERIALS AND METHODS : Test methods used on liquid paints - Test methods used on dry paint films - RESULTS : Liquid paint - Dry paint - CONCLUDING REMARKS DOI : 10.1007/s11998-018-0132-x En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-018-0132-x.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32429 [article]

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How can we handle microbial growth in paints in light of upcoming biocide legislation in Europe ? / Anders Larsson in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 209, N° 4653 (08/2019)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 209, N° 4653 (08/2019) . - p. 20-21 Titre : How can we handle microbial growth in paints in light of upcoming biocide legislation in Europe ? Type de document : texte imprimé Auteurs : Anders Larsson, Auteur ; Stig Bardage, Auteur ; Petter Melin, Auteur ; Lars Hamberg, Auteur Année de publication : 2019 Article en page(s) : p. 20-21 Langues : Anglais (eng) Catégories : Antimicrobiens Chimie industrielle -- Législation -- Pays de l'Union européenne Peinture -- Industrie -- Législation -- Pays de l'Union européenne Revêtements -- Additifs:Peinture -- Additifs Index. décimale : 667.9 Revêtements et enduits Résumé : Within the European union, biocidal product is defined as a chemical substance or micro-organism with the intention of destroying, deterring, rendering harmless, preventing the action of, or otherwise exerting a controlling effect on, any harmful organism by any means other than mere physical or mechanical action (Regulation (EU) 528/2012). A paint contains pigments and binders. Additives and solvents, such as water are added to optimise the paint performance. The paint formulation is often a liquid formulation due to the ease of application to reach the protective, aesthetic and other intended functions a coating film may have in order to protect the substrate beneath. Despite this, about half of the material is lost during paint film formation. Due to environmental and health and safety concerns there has for many years, been a trend to switch the paint medium from organic solvents to water. The formulations had to be re-designed to incorporate a hydrophobic paint binder into a hydrophilic water medium. Furthermore, the addition of water into the formulation makes the can a suitable habitat for micro-organisms, such as bacteria, algae and fungi, which can survive in both aerobic and anaerobic conditions. That is the place the paint is stored after production until application and use of the peint. The traditional way to prepare a peint has been to optimise all paint parameters and towards the end, add sufficient amount of biocide ta inhibit microbiological growth. Note de contenu : - IN-CAN PRESERVATION AND STORAGE : Learnings from other industries eg food industry - Change pH - Reduce nutrient availability - Enhancing or boosting biocide performance - Using paint from the in-can bottle - PAINT FILM PRESERVATION En ligne : https://drive.google.com/file/d/1qlEOw2Tjdx-yI68qtt1a7o4OGiCz5Xgi/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32881 [article]

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