Formaldehyde abatement functional latex for interior coating / Jianming Xu in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 209, N° 4655 (10/2019)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 209, N° 4655 (10/2019) . - p. 15-17 Titre : Formaldehyde abatement functional latex for interior coating Type de document : texte imprimé Auteurs : Jianming Xu, Auteur ; Jian Zou, Auteur ; Wei Cui, Auteur ; Weijiang Yang, Auteur ; Paul Doll, Auteur ; James Bohling, Auteur Année de publication : 2019 Article en page(s) : p. 15-17 Langues : Anglais (eng) Catégories : Chlorure de polyvinyle Formaldéhyde Formulation (Génie chimique) Latex Liants Matériaux -- Propriétés fonctionnelles Réduction des composés organiques volatils Index. décimale : 667.9 Revêtements et enduits Résumé : Formaldehyde is an important chemical, used widely within the industry for more than a century to manufacture building materials and household items. Numerous resins have been developed, including urea-formaldehyde, phenol-formaldehyde and melamine-formaldehyde, which offer a wide range of beneficial properties at low cost and are, thus, used ubiquitously throughout the globe. Subsequently, it was determined that some of these resins can break down, leading to elevated formaldehyde emissions. Sources other than resins include combustion, textiles, insulation, cleaning products and wood itself. It has been determined that even human breath contains 3-5ppbV per exhale. Significant sources for elevated levels within interior spaces are composite wood products made with adhesives that contain urea formaldehyde resin. Note de contenu : - Table 1 : Binder information for the comparison of Dow technology vs competitor technology - Table 2 : Flat paint formluation at 50 PVC and 67 PVC - Fig. 1 : Effectiveness of various dry paint films at reducing formaldehyde in a chamber with 1 mg/m3 HCHO - Fig. 2 : Effect of paint PVC on the HCHO reduction efficiency with 1 mg/m3 HCHO - Fig. 3 : Percent of formaldehyde released after saturation for Dow functional binder and competitor additive - Fig. 4 : The abated HCHO through chemical reactions of Dow functional latex within 15 days En ligne : https://drive.google.com/file/d/1dr_nTmCYSc5dhDFRp75j_OnknBGWJTZo/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33131 [article]

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Insights into the composite coating for improving the weatherability of TiO2 white pigments / Ying Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 6 (11/2023)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 6 (11/2023) . - p. 2125-2133 Titre : Insights into the composite coating for improving the weatherability of TiO2 white pigments Type de document : texte imprimé Auteurs : Ying Wang, Auteur ; Yangsong Chen, Auteur ; Ling Yang, Auteur ; Jincheng Jian, Auteur ; Shanshan Liu, Auteur ; Shiguang Guo, Auteur ; Wei Cui, Auteur ; Tao He, Auteur Année de publication : 2023 Article en page(s) : p. 2125-2133 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Composites Dioxyde de titane Photoélectrochimie Pigments inorganiques Résistance aux conditions climatiques Revêtements inorganiques Traîtements de surface Index. décimale : 667.9 Revêtements et enduits Résumé : Several inorganic coatings, such as ZrO2, SiO2, Al2O3, and AlPO4, have been utilized in the TiO2 pigment industry in order to reduce the natural photoactivity of TiO2 nanoparticles. However, the different role of each material in impacting the TiO2 photoactivity lacks comparative studies, and this is critical to provide a composite coating strategy for TiO2 pigments to achieve optimal weatherability. Our work has shown that each of these coating materials plays a unique role in suppressing the TiO2 photoactivity. For instance, ZrO2 and AlPO4 increase the rate of charge recombination, while SiO2 reduces it. By comparing and analyzing their effects on the charge carrier processes, we have designed and created a composite-coated TiO2 pigment that features a sequential deposition of ZrO2, SiO2, and AlPO4. This product has been proved to exhibit excellent weatherability. Note de contenu : - MATERIALS AND METHODS : Materials - Process of AlPO4 coating - Process of Al2O3 coating - Process of zirconia coating - Process of silica coating - Process of composite coating - Photoactivity assessment by methyl orange (MO) photodegradation - Photoelectrochemical (PEC) measurements - RESULTS AND DISCUSSION : Comparison of AlPO4 and Al2O3-coated TiO2 pigments - Investigation on silica- and zirconia-coated TiO2 pigments - Design of composite-coated TiO2 pigments - Table 1 : Effects of single coating layers toward the TiO2 photoactivity DOI : https://doi.org/10.1007/s11998-023-00809-z En ligne : https://link.springer.com/content/pdf/10.1007/s11998-023-00809-z.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40187 [article]

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