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Acetylenic glycol-based surfactants / Jim Reader in ADHESIVE TECHNOLOGY, Vol. 16, N° 2 (06/1999)
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Titre : Acetylenic glycol-based surfactants Type de document : texte imprimé Auteurs : Jim Reader, Auteur ; Virendra V. Shah, Auteur Année de publication : 1999 Article en page(s) : p. 26-27 Langues : Anglais (eng) Catégories : Adhésifs en phase aqueuse
Adhésifs sensibles à la pression
Formulation (Génie chimique)
Glycol acétylénique
Surfactants
Tension superficielleIndex. décimale : 668.3 Adhésifs et produits semblables Résumé : This article looks at the role of acetylenic glycol-based surfactants for water-based pressure sensitive applications, and wet laminating techniques. Note de contenu : - Background
- Waterborne adhesives
- Acetylenic glycol-based surfactants
- Surfactants in waterborne adhesives
- Table 1 : Surface tension of various liquids and solids
- Table 2 : Adhesive formulation properties and coating conditions as a function of coater typePermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37370
in ADHESIVE TECHNOLOGY > Vol. 16, N° 2 (06/1999) . - p. 26-27[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 001983 - Périodique Bibliothèque principale Documentaires Disponible Factors affecting sealer performance on concrete / Jim Reader in COATINGS TECH, Vol. 16, N° 10 (10/2019)
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Titre : Factors affecting sealer performance on concrete Type de document : texte imprimé Auteurs : Jim Reader, Auteur ; Gary Johnson, Auteur Année de publication : 2019 Article en page(s) : p. 36-42 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Epoxydes
Essais (technologie)
Formulation (Génie chimique)
Joints d'étanchéité
Liants
Matériaux cimentaires -- Revêtements
Polyacryliques
Spectroscopie Raman
SurfactantsIndex. décimale : 668.3 Adhésifs et produits semblables Résumé : It is often assumed that solvent-based sealers give better performance than water-based formulations on concrete because the solvent-based sealers are thought to better penetrate into the concrete matrix. In practice, it can be difficult to measure actual penetration of a sealer into concrete, as dyes and colorants used to highlight the sealer may show different migration properties than the polymeric binder. Confocal Raman spectroscopy mapping has been used to map the depth of penetration of solvent-based, 100% solids, and water-based sealers that employ acrylic and epoxy binders. This mapping shows that neither solvent-based nor water-based formulations showed any significant penetration into the concrete substrate beyond the first few microns of the open surface. A study has also been carried out using a model waterborne acrylic sealer formulation to determine whether additives might influence the penetration of the sealer into the concrete or other factors that could affect the performance of the waterborne coating. This work has shown that the addition of anti-foaming, coalescing surfactants can improve the protective properties of the coating by improving air release and increasing film network formation at the concrete surface. Note de contenu : - Fig. 1 : The concrete substrate
- Fig. 2 : Color based test for sealer penetration into concrete
- Fig. 3 : Penetration of solvent-free and water-based epoxy on concrete
- Fig. 4 : Raman spectra of the commercial water-based sealer after drawdown and drying on a glass microscope slide and Raman spectra of the commercial solvent based sealer after drawdown and drying on a glass microscope slide
- Fig. 5 : Micrograph of the concrete surface sealed with a water-based sealer and Raman map of the same area. The green rectangle indicates area mapped with 1x1 µm pixels. Intensigy of hydrocarbon band at 2391 Rcm-1 is represented by green color saturation
- Fig. 6 : Micrograph of the concrete surface sealed with a solvent-based sealer and Raman map of the same area. The green rectangle indicates area mapped with 1x1 µm pixels. Intensity of hydrocarbon band at 2936 Rcm-1 is represented by green color saturation
- Fig. 7 : Surface tension of water-based sealer containing different surfactants
- Fig. 8 : Micrograph of the concrete surface sealed with the water-based sealer containing surfactant or non-ionic, alkyl phenol ethoxylate surfactant. The green rectangle indicates area mapped with 1x1 µm pixels. Intensity of hydrocarbon band at 2931 Rcm-1 is represented by green color saturation
- Fig. 9 : Effect of different surfactants (0.9% w/w/ use level unless stated) on water spot resistance of concrete sealer formulation
- Fig. 10 : Effect of different defoamers on water spot resistance of concrete sealer formulation. A Concrete darkening as water penetrates through the sealer forulated with a compatible defoamer and sealer formulated with an optimized defoamer where the water does not penetrate through the sealer
- Table 1 : Operating conditions for confocal Raman microscopy of sealed concrete panels
- Table 2 : Guide formulation for water-based concrete sealer (Lubrizol)En ligne : https://drive.google.com/file/d/1F6bfeejpdp2BKk7ycUiI5qBTvZNiiu-u/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33250
in COATINGS TECH > Vol. 16, N° 10 (10/2019) . - p. 36-42[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21248 - Périodique Bibliothèque principale Documentaires Disponible New additive to eliminate pinholes for water-based coating formulations / Jim Reader in COATINGS TECH, Vol. 18, N° 3 (03/2021)
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Titre : New additive to eliminate pinholes for water-based coating formulations Type de document : texte imprimé Auteurs : Jim Reader, Auteur ; Jos van Oosterwijk, Auteur ; Caixuan Xu, Auteur ; Ye Dai, Auteur ; Ruediger Mertsch, Auteur ; Shauna McAuliffe, Auteur ; Jianchang Tang, Auteur Année de publication : 2021 Article en page(s) : p. 30-37 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antimousse
Automobiles -- Revêtements
Couche de base
Dépôt par pulvérisation
Encre
Formulation (Génie chimique)
Piqures (défaut)
Revêtements -- Défauts
Revêtements en phase aqueuse -- Additifs
Revêtements organiques
Surfactants
Tension superficielle
Vernis bi-composant
ViscositéIndex. décimale : 667.9 Revêtements et enduits Résumé : Pinholes are a problem for formulators developing fast-drying, water-based coatings, especially in coatings cured at high temperature and applied at high wet film thickness. Pinholes are often caused by air or solvent vapor release from the film when the coating is too viscous to flow back and repair the holes. Pinholes also occur in baked coatings, as the trapped vapor regains mobility when the coating softens under heating, before crosslinking hardens the film, preventing flow back into the voids.
Hydrocarbon-based defoamers help eliminate the foam and pinholes in these formulations, but their limited compatibility results in lower gloss, poor leveling and surface appearance. This paper describes a new additive that combines both deaeration of microfoam and modified surface drying for pinhole elimination. This new additive shows comparable pinhole elimination compared with hydrocarbon-based defoamers, but without compromising formulation compatibility or final coating appearance.Note de contenu : - New additive development
- Fig. 1 : Pinholes in a spray applied automotive OEM basecoat
- Fig. 2 : bubble release and pinhole formation in an applied film
- Fig. 3 : Molecular defoamer mechanism to eliminate microfoam
- Fig. 4 : Change in film fluidity of a water-based coating during drying
- Fig. 5 : Influence of surfactants on open time of water-based, 2K clearcoat new anti-pinhole additive
- Fig. 6 : a) Surface tension reduction with LA-W 1814 and b) Foam control in water-based primer
- Fig. 7 : The "wedge" application test
- Fig. 8 : Minimum film thickness for pinhole formation
- Fig. 9 : Foam control and surface appearance of white basecoat sprayed with different anti-pinhole additives
- Fig. 10 Panels of white basecoat containing different anti-pinhole additives
- Fig. 11 : Foam and surface appearance of silver basecoat panels after clearcoat
Application
- Fig. 12 : a) Flop index and b) wave scan of silver basecoat panels after clearcoat application
- Fig. 13 : Images of water-based plastic coating applied onto glass after high-speed stirring. (Panels are viewed from back of panel with backlighting)
- Fig. 14 : Foam control in water-based packaging ink
- Fig. 14 :
- Table 1 : White basecoat formulation
- Table 2 : Blue packaging ink formulationEn ligne : https://drive.google.com/file/d/11XvghQD3eob_XhUd0fbNTfayVNfj_h-N/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35527
in COATINGS TECH > Vol. 18, N° 3 (03/2021) . - p. 30-37[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22653 - Périodique Bibliothèque principale Documentaires Disponible 22652 - Périodique Bibliothèque principale Documentaires Disponible Rules drive innovation / Jim Reader in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 192, N° 4452 (05/2002)
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Titre : Rules drive innovation Type de document : texte imprimé Auteurs : Jim Reader, Auteur ; Kevin R. Lassila, Auteur ; Steven R. Carney, Auteur Année de publication : 2002 Article en page(s) : p. 22 Langues : Anglais (eng) Catégories : Biosurfactants
Isotherme d'adsorption
Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- Additifs
Tension superficielleIndex. décimale : 667.9 Revêtements et enduits Résumé : A new generation of biodegradable surfactantsare meeting the latest in strict environmental regulations, report the authors.
There is a continuing trend in modern coatings towards systems with improved environmental and health properties, often driven by existing or proposed future legislation, but also by end-user demands for improved performance or safety.Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28082
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 192, N° 4452 (05/2002) . - p. 22[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 000325 - Périodique Bibliothèque principale Documentaires Disponible The use of engineered silica to enhance coatings / Jim Reader in COATINGS TECH, Vol. 17, N° 6 (06/2020)
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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
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