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Stability for dispersions / Simona Schwarz in EUROPEAN COATINGS JOURNAL (ECJ), N° 07-08/2010 (07-08/2010)
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Titre : Stability for dispersions : Determining the effects of PVP upon sedimentation of clay suspensions Type de document : texte imprimé Auteurs : Simona Schwarz, Auteur ; Gudrun Petzold, Auteur ; Abbas Qaisar Bhatti, Auteur Année de publication : 2010 Article en page(s) : p. 33-37 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Dispersions et suspensions
Dispersions et suspensions -- Stabilité
Kaolin
pH
Polyvinylpyrrolidone
Revêtements -- AdditifsIndex. décimale : 667.9 Revêtements et enduits Résumé : For certain coatings applications, it is important to maintain the stability of fine particles in aqueous suspension. The theoretical effects of pH on the suspension stability of china clay in water were evaluated, and practical (centrifuge) tests were used to determine the effects of adding different molecular weights of the polymer polyvinylpyrrolidone (PVP) at constant pH. En ligne : https://drive.google.com/file/d/1bFpteL5ZINyllreAT6Hzygijztma20l4/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9727
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 07-08/2010 (07-08/2010) . - p. 33-37[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 012331 - Périodique Bibliothèque principale Documentaires Disponible Synthesis and performance investigation of carbon black hyperdispersant IMD / Shuangshuang Jiang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 5 (09/2023)
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Titre : Synthesis and performance investigation of carbon black hyperdispersant IMD Type de document : texte imprimé Auteurs : Shuangshuang Jiang, Auteur ; Jue Bai, Auteur ; Xiaogang Ying, Auteur ; Jianlin Han, Auteur ; Kai Zhu, Auteur ; Lianshan Mao, Auteur Année de publication : 2023 Article en page(s) : p. 1529-1539 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Agents dispersants (chimie) -- Synthèse
Caractérisation
Dispersions et suspensions -- Stabilité
Formulation (Génie chimique)
Noir de carbone
PolyadditionIndex. décimale : 667.9 Revêtements et enduits Résumé : An aqueous dispersion of carbon black is crucial in industrial coatings. In this manuscript, a hyperdispersant IBOMA-MPEGA-DMAM (IMD) has been synthesized using isobornyl methacrylate (IBOMA), polyethylene glycol monomethyl ether acrylate (MPEGA), and N, N-dimethyl acrylamide (DMAM) as monomers via a free radical polymerization method, which is used to improve the dispersibility of an aqueous dispersion system of carbon black. The molecular structure and performance stability of IMD were investigated through comprehensive characterizations of FTIR, GPC, particle size distribution and TEM. When the molar ratio of the monomers IBOMA:MEPGA:DMAM is 5.5:8.3:9.7, the obtained hyperdispersant shows good dispersibility. When the optimal dosage of dispersant IMD was 8%, the viscosity of carbon black slurry was as low as 18.6 mPa·s and the average particle size of carbon black was 275 nm. Furthermore, the stability of the prepared carbon black slurry was better than that of the two commercial dispersants. Note de contenu : - EXPERIMENTAL : Materials - Synthesis of hyperdispersant IBOMA-MPEGA-DMAM - Preparation of CB pigment by dispersion system - Central composite design (CCD) - Characterization
- RESULTS AND DISCUSSION : CCD optimizes monomer ratio - FTIR analysis - GPC analysis - The viscosity of CB dispersion - The average particle size of the CB dispersion - TEM analysis - Stability of CB dispersions
- Table 1 : Formula of CB dispersion
- Table 2 : Factors and levels of central composite design
- Table 3 : Experimental results of central composite design
- Table 4 : Statistical analysis of the experimental results
- Table 5 : Prediction and experimental values of viscosity of CB slurry prepared with dispersant
- Table 6 : Relative molecular weight of IMD of superdispersantDOI : https://doi.org/10.1007/s11998-023-00754-3 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-022-00754-3.pdf?pdf=button Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39969
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 5 (09/2023) . - p. 1529-1539[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24242 - Périodique Bibliothèque principale Documentaires Disponible Titanium dioxide grafted with silane coupling agents and its use in blue light curing ink / Lili Wang in COLORATION TECHNOLOGY, Vol. 136, N° 1 (02/2020)
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Titre : Titanium dioxide grafted with silane coupling agents and its use in blue light curing ink Type de document : texte imprimé Auteurs : Lili Wang, Auteur ; Xiaying Jiang, Auteur ; Chenglong Wang, Auteur ; Yi Huang, Auteur ; Yiding Meng, Auteur ; Jianzhong Shao, Auteur Année de publication : 2020 Article en page(s) : p. 15-22 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Angle de contact
Bleu (couleur)
Caractérisation
Dioxyde de titane
Dispersions et suspensions -- Stabilité
Encre
Encre -- Propriétés mécaniques
Fourier, Spectroscopie infrarouge à transformée de
Granulométrie
Greffage (chimie)
Photoréticulation
Réaction de couplage
Rhéologie
Silanes
ThermogravimétrieIndex. décimale : 667.2 Colorants et pigments Résumé : To improve the properties of titanium dioxide particles and realise their firm anchorage in blue light curing film, three modified titanium dioxide particles were prepared by grafting 3-(trimethoxysilyl)propyl methacrylate, 3-aminopropyltriethoxysilane and hexadecyltrimethoxysilane. The surface changes of titanium dioxide particles after modification were characterised. The dispersion stability, photo-polymerisation, rheological and mechanical properties of modified titanium dioxide blue light curing inks were investigated. Results showed that compared with native titanium dioxide, modified titanium dioxide particles were more appropriate for blue light curing ink. The particle sizes of the three modified titanium dioxide particles became smaller, their surfaces exhibited hydrophobicity, and the viscosity of the modified titanium dioxide inks decreased slightly. Of the three modified titanium dioxide particles, 3-(trimethoxysilyl)propyl methacrylate- and hexadecyltrimethoxysilane-modified titanium dioxide particles exhibited better dispersion stability in blue light curing ink. In particular, 3-(trimethoxysilyl)propyl methacrylate-modified titanium dioxide blue light curing ink showed the best photo-polymerisation and mechanical properties, which indicated the participation of the pigment grafted by double bonds in the blue light curable polymerisation. Using modified titanium dioxide in blue light curing ink, the dry/wet rubbing fastness of the printed fabrics improved. Note de contenu : - EXPERIMENTAL : Materials - Grafting of silane coupling agent onto the surface of titanium dioxide particles - Preparation of blue light curing ink - Preparation of blue light curing - Characterisations
- RESULTS AND DISCUSSION : FT-IR spectroscopy of modified titanium dioxide - Thermogravimetric analysis of modified titanium dioxide - Elemental analysis of modified titanium dioxide - Particle size analysis of modified titanium dioxide - Contact angle analysis of modified titanium dioxide - Dispersion stability of modified titanium dioxide - Rheological porperties of modified titanium dioxide bluelight curing inkDOI : https://doi.org/10.1111/cote.12434 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12434 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33696
in COLORATION TECHNOLOGY > Vol. 136, N° 1 (02/2020) . - p. 15-22[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21546 - Périodique Bibliothèque principale Documentaires Disponible Ymer N120 : use in nonionic polyurethane dispersions / Henrik Bernquist in PAINTINDIA, Vol. LXII, N° 9 (09/2012)
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Titre : Ymer N120 : use in nonionic polyurethane dispersions Type de document : texte imprimé Auteurs : Henrik Bernquist, Auteur ; S. Ramakrishnan, Auteur ; Bhushan Saindane, Auteur Année de publication : 2012 Article en page(s) : p. 73-76 Langues : Anglais (eng) Catégories : Agents dispersants (chimie)
Diols
Dispersions et suspensions -- Stabilité
Polymères en émulsion
Polyuréthanes
Propionique diméthylol, Acide
RevêtementsIndex. décimale : 667.9 Revêtements et enduits Résumé : This article presents information concerning a nonionic diol that can be incorporated laterally in polyurethane backbones in order to achieve internal stabilization of polyurethane dispersions. The benefits of using the nonionic diol, in terms of tolerance of the resulting dispersion against electrolytes and shear forces, have been investigated. In addition, the tolerance of the resulting polyurethane coating against polar solvents has also been studied. The nonionic diol was observed to be an efficient dispersant, functioning well together with anionic stabilization in the form of Bis-MPA (dimethylol propionic acid). The lateral positioning of the nonionic segments was observed to greatly improve the dispersion stability and reduce the sensitivity of the corresponding polyurethane coating to solvents. A comparative study between nonionic & anionic PUD clearly shows that nonionic stabilization provides more electrolytic & shear stability. Note de contenu : - PREPARATION OF POLYURETHANE DISPERSION
- PRE-POLYMER FORMULATIONS AND SYNTHESIS PROCEDURE - STAGE 1 : Synthesis procedure - Stage 2 : Chain extension, neutralization and dispersion - Stage : Neutralization and chain extension procedure
- TESTING PROCEDURES : Preparation of the polyurethane coating - Stability of the polyurethane dispersion - Electrolyte stability : testing procedure - Shear stability : testing procedure - Results : Stability of polyurethane dispersion - Properties of the polyurethane coatingPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16263
in PAINTINDIA > Vol. LXII, N° 9 (09/2012) . - p. 73-76[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14239 - Périodique Bibliothèque principale Documentaires Disponible