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The particle size effect of MALPB-DEA dispersions on their anticorrosion performances as waterborne coatings on galvanized sheet / Jinwei Wang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 1 (01/2011)
[article]
Titre : The particle size effect of MALPB-DEA dispersions on their anticorrosion performances as waterborne coatings on galvanized sheet Type de document : texte imprimé Auteurs : Jinwei Wang, Auteur ; Jinwei Tang, Auteur ; Yedong He, Auteur Année de publication : 2011 Article en page(s) : p. 11-17 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anhydride maléique
Anticorrosifs
Anticorrosion
Diéthanolamine
Dispersions et suspensions
Galvanisation
Polybutadiène
Polymères en émulsion
Revêtements en phase aqueuse:Peinture en phase aqueuse
Taille des particulesIndex. décimale : 667.9 Revêtements et enduits Résumé : Maleic anhydride-g-liquid polybutadiene (MALPB) dispersions were prepared by chemical modification with diethanolamine (DEA) during direct polymer emulsification, and their anticorrosion performances on galvanized sheet were found to be strongly dependent on their particle size and distribution with the variation of DEA. The dispersion containing DEA to maleic anhydride at molar ratio of 2:1 exhibited much smaller particle size and narrower size distribution than that containing DEA to maleic anhydride at molar ratio of 1:1, as measured by a laser diffraction particle size analyzer. A more compact organic layer was supposed to be formed by the dispersion composed of smaller size and narrower size distribution particles on the galvanized sheet, which exhibited better anticorrosive properties. This compact layer slowed down the electrolyte penetration onto the metal surface such that the life span of the metal could be prolonged, which was reflected in the increase in corrosion potential as measured by DC polarization, higher impedance during immersion in 3.5 wt% NaCl solution as measured by electrochemical impedance spectroscopy (EIS), and improved durability in harsh environment as observed by images after salt spray tests. Note de contenu : EXPERIMENTAL : Materials - Preparation of the coatings - Film formation and the curing process - Characterizations.
RESULTS AND DISCUSSION : Particle size and distributions of the dispersions - Electrochemical impedance spectroscopy (EIS) - Salt spray test.DOI : 10.1007/s11998-010-9268-z En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-010-9268-z.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10918
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Code-barres Cote Support Localisation Section Disponibilité 012853 - Périodique Bibliothèque principale Documentaires Disponible The preparation of hydrophobic hybrid film coatings from siloxane-modified polyacrylate associated with nano-fumed silica and organo-modified clay / Weepol Pramualkijja in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 5 (09/2022)
[article]
Titre : The preparation of hydrophobic hybrid film coatings from siloxane-modified polyacrylate associated with nano-fumed silica and organo-modified clay Type de document : texte imprimé Auteurs : Weepol Pramualkijja, Auteur ; Nantana Jiratumnukul, Auteur Année de publication : 2022 Article en page(s) : p. 1467-1492 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésion
Angle de contact
Angle de glissement
Argile
Caractérisation
Dispersions et suspensions
Hydrophobie
Matériaux hybrides
Morphologie (matériaux)
Polyacrylates
Polymères modifiés siloxane
Revêtements organiques
Rugosité
Structure chimiqueIndex. décimale : 667.9 Revêtements et enduits Résumé : Superhydrophobic hybrid film coatings were prepared from the dispersions of siloxane-modified polyacrylate associated with organo-modified clay (OMC-20A) and hydrophobic-fumed silica (FS-H15) coated on glass and cement boards by a dipping process. The hydrophobicity, surface morphology, surface energy, and surface roughness of the obtained hybrid film coatings (HBFCs) were investigated. The results showed that the hydrophobicity of the obtained HBFCs was related to surface roughness and the roughness profile of the surface. HBFCs obtained using 10 phr OMC-20A with 35 phr FS-H15 in hybrid coatings and fabricated by four dipping provided high roughness surfaces (Rq) at 546.67 nm with a micro-nano-binary structure and a low surface energy at 2.35 mN/m leading to superhydrophobic surfaces on the coated glass and cement boards demonstrating 151.34° and 150.88° water contact angles, respectively. As a result, these HBFCs coated on cement board performed great water repellent and self-cleaning. Note de contenu : - Experimental : Materials
- Preparation of SMPA
- Preparation of the HCs
- Fabrication of the HBFCs
- Characterization
- Results and discussion : SMPA dispersions - Hydrophobicity related with adhesion and hardness - Surface morphology - The chemical structure of HBFCs - Surface energy - Surface roughness and profile of roughness
- Effect of porous substrates : The water contact angle, water repellent and self-cleaning - The durability
- Table 1 : Recipes of the different HC1s
- Table 2 : Recipes of the different HC2s
- Table 3 : Adhesion of the HBFCs
- Table 4 : The sliding angle of HBFC1 and 2s
- Table 5 : The water, EG and glycerol contact angles of the different HCsDOI : https://doi.org/10.1007/s11998-022-00621-1 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00621-1.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38284
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Code-barres Cote Support Localisation Section Disponibilité 23672 - Périodique Bibliothèque principale Documentaires Disponible The PVP/VI copolymer dye transfer inhibition agent during the washing of the polyester fabric / Francisco J. Carrión-Fité in TENSIDE, SURFACTANTS, DETERGENTS, Vol. 50, N° 1 (01-02/2013)
[article]
Titre : The PVP/VI copolymer dye transfer inhibition agent during the washing of the polyester fabric Type de document : texte imprimé Auteurs : Francisco J. Carrión-Fité, Auteur Année de publication : 2013 Article en page(s) : p. 26-30 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants
Copolymère polyvinylpyrrolidone vinylimidazole
Détergents
Dispersions et suspensions
Fibres polyesters
Inhibiteurs de transfert de colorants
Surfactants
Textiles et tissus -- LavageIndex. décimale : 668.4 Plastiques, vinyles Résumé : The objective of this research was to study the effect of the copolymer polyvinylpyrrolidone/vinylimidazole (PVP/VI) for use as a dye transfer inhibitor (DTI) during the washing of dyed polyester fabric, depending on the detergent components. The DTI was used to find its efficiency during repeated washings of polyester fabric dyed with disperse dyes. At the same time, its efficiency was tested for preventing dye migration to other fabrics, such as polyester, cellulose diacetate, acrylic, polyamide, cotton and wool. The influence of anionic (SDBS) and non-ionic (alkyl ethoxylates with 6 EO-groups) surfactants in different proportions and with zeolite as a builder and the aforementioned DTI was tested. Results of CIELAB colour differences were obtained for the dyed and undyed polyester fabrics after five washings. Note de contenu : - EXPERIMENTAL PART : Materials - Apparatus - Procedures
- RESULTS AND DISCUSSION : Migration from the dyed polyester textile without the use of PVP/VI - Influence of the PVP/VI copolymer on migration from the dyes polyester fabricDOI : 10.3139/113.110227 Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17146
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Code-barres Cote Support Localisation Section Disponibilité 14537 - Périodique Bibliothèque principale Documentaires Disponible The use of engineered silica to enhance coatings / Jim Reader in COATINGS TECH, Vol. 17, N° 6 (06/2020)
[article]
Titre : The use of engineered silica to enhance coatings Type de document : texte imprimé Auteurs : Jim Reader, Auteur ; Maria Nargiello, Auteur Année de publication : 2020 Article en page(s) : p. 36-45 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosifs
Anticorrosion
Brillance (optique) -- Mesure
Charges (matériaux)
Déperlance
Dispersions et suspensions
Fluidisation
Formation de film
Imperméabilisation
Matériaux amorphes
Mouillabilité
Résistance à l'abrasion
Rhéologie
SiliceLa silice est la forme naturelle du dioxyde de silicium (SiO2) qui entre dans la composition de nombreux minéraux.
La silice existe à l'état libre sous différentes formes cristallines ou amorphes et à l'état combiné dans les silicates, les groupes SiO2 étant alors liés à d'autres atomes (Al : Aluminium, Fe : Fer, Mg : Magnésium, Ca : Calcium, Na : Sodium, K : Potassium...).
Les silicates sont les constituants principaux du manteau et de l'écorce terrestre. La silice libre est également très abondante dans la nature, sous forme de quartz, de calcédoine et de terre de diatomée. La silice représente 60,6 % de la masse de la croûte terrestre continentale.
ViscositéIndex. décimale : 667.9 Revêtements et enduits Résumé : The field of coatings technology has utilized many forms of silica-based particles in the last 70 years. This large, varied class of fillers is generically broken into two categories of crystalline and amorphous morphology. With ongoing scrutiny and sensitivity in the coatings industry to move towards less hazards in the workplace, greater emphasis is placed on suitable amorphous technology to replace crystalline silica technology. Amorphous silica is highly adaptable and flexible to be modified in both powder and pre-dispersed forms, and numerous engineered types of technologies have been developed to provide functional solutions to many coatings problems.
Amorphous silica technology has been developed to address functionalities including: rheological control, suspension of pigments and fillers, and reinforcement of coatings film; to impart scratch resistance, hydrophobicity / anti-corrosion benefits, and oleophobicity; as a carrier of trace actives into coatings for homogenous distribution; for flow control, charge, and fluidization enhancement of powdered coatings; and gloss reduction of liquid systems. Particle technology and modification will be addressed along with performance attributes highlighted for each of the types of tailor-made modifications. The importance of proper dispersion and homogenous distribution within a coating matrix will be reviewed.
This article will address how amorphous silica technology is differentiated and engineered to create specially tailored solutions to enhance the performance of coatings and will highlight the latest technical developments in this field.Note de contenu : - Rheology and film formation
- Anti-corrosion/water repellency
- Scratch resistance
- Free flow, fluidization, transfer efficiency
- Gloss control
- Recent developments in silica technology
- Fig. 1 : The silica family tree
- Fig. 2 : Production of pyrogenic (fumed) silica
- Fig. 3 : Primary, secondary, and tertiary structures of fumed silicas
- Fig. 4 : Methanol wettability of differently treated fumed silicas
- Fig. 5 : Thickening efficiency of fumed silica as a function of surface treatment
- Fig. 6 : Improved film formation with fumed silica dispersions
- Fig. 7 : Improved corrosion resistance with hydrohobically treated fumed silica ; coatings based on published guide formulations from Halox
- Fig. 8 : Structure modification of fumed silica and scratch resistance
- Fig. 9 : Homogeneous distribution of silica through a polymer matrix
- Fig. 10 : Improved scratch resistance results in a high-soilds, 2K polyurethane clear coat based on Macrymal SM 510n60LG and Vestanat HB 2640MX
- Fig. 11 : Transfer efficiency and Faraday cage effects
- Fig. 12 : Fluidization efficiency
- Fig. 13 & 14 : Measuring gloss with a reflectometer (DIN EN ISO 2813)
- Fig. 15 : SEM images of a new spherical precipitated silica particles
- Fig. 16 : Viscosity "jump curves" for waterbased silica dispersions
- Table 1 : Comparison of characteristics of different synthetic silicas
- Table 2 : Common surface treatments for fumed silicasEn ligne : https://drive.google.com/file/d/17TVd7hca18xX6Tv0Yq4-_5oKHwAWTdO8/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34358
in COATINGS TECH > Vol. 17, N° 6 (06/2020) . - p. 36-45[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21822 - Périodique Bibliothèque principale Documentaires Disponible Theoretical study of the scattering efficiency of rutile titanium dioxide pigments as a function of their spatial dispersion / Jean-Claude Auger in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 6, N° 1 (03/2009)
[article]
Titre : Theoretical study of the scattering efficiency of rutile titanium dioxide pigments as a function of their spatial dispersion Type de document : texte imprimé Auteurs : Jean-Claude Auger, Auteur ; Brian Stout, Auteur ; Vincent Arnaud Martinez, Auteur Année de publication : 2009 Article en page(s) : p. 89-97 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Dioxyde de titane
Dispersions et suspensions
Pigments -- Propriétés optiques
RevêtementsTags : Optical property Opacity Rutile titanium dioxide pigment Dependent scattering Multiple Spatial dispersion T-matrix formalism Index. décimale : 667.9 Revêtements et enduits Résumé : We propose an original theoretical framework to model the scattering efficiency of white paint films as a function of the volume fraction and spatial state of dispersion of rutile titanium dioxide pigments, taking into account electromagnetic couplings. Numerical calculations are performed using a multiple T matrix formalism on an “elemental” volume extracted from the bulk of the paint and which we model as pigments and fillers in a polymer matrix. Qualitative studies show that, due to the dependent scattering phenomenon, the size of fillers can modulate the magnitude of loss in scattering efficiency by modifying the spatial state of dispersion of the pigments in the polymer matrix. In particular, fillers whose size is comparable to the dimension of the pigments improve the scattering efficiency by impeding crowding. It is also shown that the optical properties of the bulk material at arbitrary concentration can be approximated by extrapolating the optical properties calculated on a limited number of scatterers. DOI : 10.1007/s11998-008-9116-6 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-008-9116-6.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4877
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 6, N° 1 (03/2009) . - p. 89-97[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011246 - Périodique Bibliothèque principale Documentaires Disponible 011271 - Périodique Bibliothèque principale Documentaires Disponible Third generation additives / Janos Hajas in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 198, N° 4524 (05/2008)
PermalinkThird screw increases particle dispersion / Levente Szöke in KUNSTSTOFFE INTERNATIONAL, Vol. 106, N° 1 (01-02/2016)
PermalinkThixotropic mud, compacted cake and swelling shale / J.-D. Sherwood in LES CAHIERS DE RHEOLOGIE, Vol. XIII, N° 1-2 (10/1994)
PermalinkTiO2 efficiency in coatings : products and techniques for opacity optimisation in PAINTINDIA, Vol. LXVII, N° 5 (05/2017)
PermalinkTitania pigment particles dispersion in water-based paint films / Saeed Farrokhpay in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 3, N° 4 (10/2006)
PermalinkTitanium dioxide pigment post-treatment : influence on electrostatic stability of technical dispersions / Daniel Liu in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 27, N° 7 (07/2020)
PermalinkPermalinkTransition vitreuse et "jamming" dans les dispersons colloïdales : de la dynamique locale à la rhéologie macroscopique / Michel Cloitre in RHEOLOGIE, Vol. 19 (06/2011)
PermalinkPermalinkTrue blue / Arran Marshall in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 194, N° 4482 (11/2004)
PermalinkTwo-part adhesives and application equipment / Stephanie Shira in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 22, N° 4 (04/2015)
PermalinkTwo-way benefits / Jean-Pierre Lallier in EUROPEAN COATINGS JOURNAL (ECJ), N° 07-08/2009 (07-08/2009)
PermalinkuHHP, uHHP and away with super pigments ! / Mark Ryan in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 205, N° 4610 (07/2015)
PermalinkUltrasonic milling of particles in micro- and nano-range / Kathrin Hielscher in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 202, N° 4574 (07/2012)
PermalinkUltrasonication for better pigment dispersion / Ashwani Upadhyay in PAINTINDIA, Vol. LXVII, N° 6 (06/2017)
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