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Using the wrong gloves may increase risk / R. Zwanenburg in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8/00 (07-08/2000)

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 7-8/00 (07-08/2000) . - p. 21-31 Titre : Using the wrong gloves may increase risk : A study on adequate protective gloves for working with UV/EB-curing acrylates Type de document : texte imprimé Auteurs : R. Zwanenburg, Auteur Année de publication : 2000 Article en page(s) : p. 21-31 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : UV- and EB-curable acrylates are highly reactive substances - that's why they are used widely and preferably in radiation-curing applications. Due to their reactivity these products may also cause skin irritation, in particular with persons who are working with acrylates regularly. In order to improve the occupational safety, a study which was sponsored by RadTech Europe and RadTech International North America aimed at permeation testing of five widely used acrylates with three different glove materials. It turned out that thin (0.1 mm) disposable nitrite rubber gloves of good quality give adequate protection for up to 30 minutes for most low viscosity acrylates. For the medium thickness nitrile rubber gloves (0.45 mm) no permeation was seen for up to 4 hours, whereas for the thickest qualities tested (0.56 mm) no permeation was found after 8 hours. Note de contenu : - The dermatologically most significant component - Study on the thin gloves typically used by dentists - Using the wrong gloves may increase risk - Easily available gloves were tested - Three different situations were investigated - For the thickest gloves the choice of solvents is a critical factor - Thin gloves withstood permeation to most acrylates for up to 30 minutes - Medium gloves protect for a couple of hours - Thick gloves were most resistant to permeation - For HDDA and 2-PEA the tested gloves cannot be racommended - Thin disposable gloves show no physical resistance - Medium gloves shouldn't be reused - Even thick gloves cannot be used for all acrylates - Recommendations for gloves when handling HDDA or DPGDA - High quality gloves should be prefered - Conclusion : different types of gloves can best be used for different situations Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11009 [article]

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Electrokinetic / Olga A. Kulikova in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8/00 (07-08/2000)

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 7-8/00 (07-08/2000) . - p. 32-35 Titre : Electrokinetic : Properties of combined alkyd-acrylic dispersions Type de document : texte imprimé Auteurs : Olga A. Kulikova, Auteur ; Eugeny A. Indeikin, Auteur ; Vladimir B. Manerov, Auteur ; Natalija B. Skopintseva, Auteur Année de publication : 2000 Article en page(s) : p. 32-35 Note générale : Bibliogr. Langues : Anglais (eng) Tags : Coating  material;'Water  base  paint'  'Aqueous  dispersion'  'Acrylic  polymer'  Emulsion  Oligomer  'Alkyd  resin'  'Electrical  properties'  'Electrokinetic  potential'  'Electrophoretic  mobility'  pH  'Particle  size' Index. décimale : 667.9 Revêtements et enduits Résumé : Fast drying, high protective properties and adhesion to a lot of substrates can be provided by combined binders of thermoplastic polymer dispersions and alkyd oligomer emulsions. To assure their successful use it is essential to avoid deterioration of aggregate stability may be caused by different dispersion composition of combined dispersion phases, in all cases however the determining factor is electrokinetic property of dispersions. In this study the influence of dispersion phase particles, pH of dispersion medium of combined acrylic dispersions and alkyd emulsions stabilized with different types of surfactants on electrokinetic potential is shown. Note de contenu : - Characterization of an electric double layer - Factors influencing the electrokinetic potential of dispersion phase particles - ζ-potential of alkyd emulsions with different particle sizes is negative in a wide range of pH values - ζ-potential increases when pH exceeds 7.0 - Light transmission is sharply decreased in incompatibility zone Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11015 [article]

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UV curing of black pigmented coating materials / Norbert Pietschmann in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8/00 (07-08/2000)

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 7-8/00 (07-08/2000) . - p. 44-52 Titre : UV curing of black pigmented coating materials Type de document : texte imprimé Auteurs : Norbert Pietschmann, Auteur ; Ilse Peter, Auteur ; Peter Stroh, Auteur Année de publication : 2000 Article en page(s) : p. 44-52 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : Black pigmented UV-curable coating materials intended for application on wood veneer and fibreboard were prepared and used to compare different compositions, e.g., varying pigments. Reactive oligomer/monomer combinations with high acrylate functionality and, thus, an intense chain propagation reaction, a suitable and effective blend of long-wave and short-wave absorbing photoinitiators, and a careful pigment selection as well as a careful adjustment of pigment concentration were necessary to make possible both opacity and through cure. In this context, the combination of the black pigment with certain extenders can be helpful. On wooden substrates good results were achieved with both a carbon black of larger particle size, and aniline black (at ten times the pigment content). In contrast, formulations containing a standard fluffy carbon black (which gives very good colour strength and jetness in conventional and water-borne coatings) failed with respect to curability. However, formulations with aniline black also showed excellent jetness and brilliancy. Note de contenu : 1. The experiments at a glance 2. Introductory investigations and formulation principles 3. Improvements of formulations : Influence of the formulation on through cure and surface cure - Oxygen inhibition can lead to poor scratch resistance - Good results can be obtained when extenders are added - Attempts to find an optimised photoinitiator system 4. In conclusion - problems can be solved, with some limitations Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11016 [article]

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Coatings for textiles / Robert D. Athey in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8/00 (07-08/2000)

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 7-8/00 (07-08/2000) . - p. 53-57 Titre : Coatings for textiles Type de document : texte imprimé Auteurs : Robert D. Athey, Auteur Année de publication : 2000 Article en page(s) : p. 53-57 Langues : Anglais (eng) Catégories : Additifs Fibres textiles Revêtements décoratifs:Peinture décorative Textiles et tissus Index. décimale : 667.9 Revêtements et enduits Résumé : The textile industry uses much of the same materials and technology common to the coatings industries. The coating industry normally thinks of a substrate as a solid structure, but textiles are open and flexible structures that have many types of coating applied to them. Thus, the coating mechanisms and formulations that are used with the textiles are different. So too, the testing done on the resultant product is a bit different. However, the same considerations are common in textiles coatings as are used on more solid structures. May be there should be more interdisciplinary conversation between such industries using common materials. Note de contenu : - Woven materials - Non-Wovens - Yarn coatings - Fabric coatings 1. Decorative Applications : Skill Screening - Gravure Printing 2. Water Repellants 3. Plastisols 4. Flame Retardants : Testing Protocols - A point of View Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11017 [article]

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Modern methods in coatings analysis / Marek W. Urban in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8/00 (07-08/2000)

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 7-8/00 (07-08/2000) . - p. 58-59 Titre : Modern methods in coatings analysis Type de document : texte imprimé Auteurs : Marek W. Urban, Auteur Année de publication : 2000 Article en page(s) : p. 58-59 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : Although there are numerous surface sensitive techniques utilized in polymer surface analysis, many require high vacuum operating conditions or sample preparation. Certain Fourier transform infrared (FT-IR) techniques offer surface sensitivity and selectivity without vacuum limitations and broader range of applications: attenuated total reflection (ATR), reflectance-absorbance (R-A) as well as continuosscan and step-scan photoacoustic (SS PAS), two-dimensional (2-D), and rheophotoacoustic (RPA) measurements. Note de contenu : - A wide variety of coatings samples can be studies by attenuated total reflection (ATR) - Photoacoustic spectroscopy for analysis of opaque specimens - Rheo-photoacoustic FT-IR allows detection of the work of adhesion - Possibilities of application Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11018 [article]

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Acrylates in coatings applications / Peter Mischke in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8/00 (07-08/2000)

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 7-8/00 (07-08/2000) . - p. 71-72 Titre : Acrylates in coatings applications Type de document : texte imprimé Auteurs : Peter Mischke, Auteur Année de publication : 2000 Article en page(s) : p. 71-72 Langues : Anglais (eng) Catégories : Polyacrylates Polyacryliques Revêtements organiques Index. décimale : 667.9 Revêtements et enduits Note de contenu : - Acrylates are available in the form of crosslinking and non-crosslinking resins - Table 1 : Monomers for acrylic resins (selection) and glass transition temperatures of homopolymers - Fig. 1 : Self-crosslinking acrylic resin (section of molecule) Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33512 [article]

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