Dépouillements

Rheological behaviour of automotive paint systems / Michael Osterhold in EUROPEAN COATINGS JOURNAL (ECJ), N° 4/00 (04/2000)

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 4/00 (04/2000) . - p. 18-33 Titre : Rheological behaviour of automotive paint systems Type de document : texte imprimé Auteurs : Michael Osterhold, Auteur Année de publication : 2000 Article en page(s) : p. 18-33 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : In this paper the most important measuring methods for studying the rheological behaviour of modern paint systems (oscillation tests, determination of low yield points) are described. These methods were at first used to describe the rheological/physical properties of model polyurethane microgels. The measured values for storage modulus, phase shift and yield point in waterborne pearlescent/coloured pigment systems were compared with flop-index values. The results show good correlations between the observable effect and the rheological parameters of the liquid paint. Also measurements of powder and electrodeposition coatings and clearcoats with the oscillation technique to determine the viscosity-temperature behaviour correlate well with technical properties of the final films. Note de contenu : 1. Oscillation test results translate to characteristic differences of the materials 2. Rheological characterisation of model microgels : Frequency sweeps show characteristic behaviour of samples - Temperature sweep measurements reveal severe differences - Viscosity curves of microgels 3. Automotive coatings exhibit a characteristic lightness flop : A high flop index means a good effect - Results show some fundamental relationships 4. Measurements of viscosity-temperature behaviour : Powder coatings (Rheological behaviour of powder coatings depends on the heating rate - Viscosity and surface structure) - Electrodeposition coatings - Clearcoats 5 Good correlation of rheological parameters and flop effects Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10988 [article]

Réservation

Réserver ce document

Exemplaires (2)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
000615	-	Périodique	Bibliothèque principale	Documentaires	Disponible
000616	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Scribe corrosion characterized by distance transform / B. Pourdeyhimi in EUROPEAN COATINGS JOURNAL (ECJ), N° 4/00 (04/2000)

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 4/00 (04/2000) . - p. 34-42 Titre : Scribe corrosion characterized by distance transform Type de document : texte imprimé Auteurs : B. Pourdeyhimi, Auteur ; Fred Lee, Auteur ; Han Seong Kim, Auteur Année de publication : 2000 Article en page(s) : p. 34-42 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : This paper reports on the application of the image analysis methods to characterize scribe corrosion in coatings by the use of a distance transform. The methods developed are discussed with respect to the image processing steps required as well as those used for the subsequent analysis of the processed images. The results indicate that the distance transform can be used successfully to characterize scribe corrosion. Note de contenu : - To create a distance map - Segmentation is an essential tool in the field of image analysis - Iterative relaxation segmentation - Thresholding - Distance transform by scanning the image twice - The experiment Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10989 [article]

Réservation

Réserver ce document

Exemplaires (2)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
000615	-	Périodique	Bibliothèque principale	Documentaires	Disponible
000616	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Characterisation of Newtonian and non-Newtonian liquids by a new test / Harro Bauer in EUROPEAN COATINGS JOURNAL (ECJ), N° 4/00 (04/2000)

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 4/00 (04/2000) . - p. 44-50 Titre : Characterisation of Newtonian and non-Newtonian liquids by a new test Type de document : texte imprimé Auteurs : Harro Bauer, Auteur ; Ulrich Kramer, Auteur Année de publication : 2000 Article en page(s) : p. 44-50 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation Fluides newtoniens Fluides non newtoniens Index. décimale : 667.9 Revêtements et enduits Résumé : A test procedure is described which has been developed from the flow-cup method and allows the flow properties not only of Newtonian, but also of non-Newtonian liquids to be characterised. Thereby, the time is measured It takes for a liquid flowing out of a flow cup to spread along a horizontal channel. This procedure is particularly suited characterising the fluid flow from a leak in a container and therefore offers the possibility of classifying also non-Newtonian liquids for the purpose of storage and transport by a practical value that is easy to determine. By calibration with Newtonian standard liquids, the correlation with the flow-cup method used for Newtonian liquids is established. Note de contenu : - Characterisation of shear conditions in flow cups - Modified test procedure : combined flow-cup and open-channel method - Calibration using newtonian liquids - Application of the open-channel and flow-cup procedure to non-newtonian liquids Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10990 [article]

Réservation

Réserver ce document

Exemplaires (2)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
000615	-	Périodique	Bibliothèque principale	Documentaires	Disponible
000616	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Biocides / Vladimir V. Verkholantsev in EUROPEAN COATINGS JOURNAL (ECJ), N° 4/00 (04/2000)

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 4/00 (04/2000) . - p. 56-60 Titre : Biocides Type de document : texte imprimé Auteurs : Vladimir V. Verkholantsev, Auteur Année de publication : 2000 Article en page(s) : p. 56-60 Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : Biocide additives are introduced into coating formulations in order to prevent the growth (proliferation) of microorganisms, therefore protecting liquid paints, dry coatings and production sites from biological spoilage, damage and failure. Their efficiency is normally selective and depends on the nature of the material to be protected, climatic zone, and sometimes also local conditions. Because of their toxicity for operators, ecotoxicity (for environment) and reactivity, that may cause various side effects in wet paints and dry coatings, biocides are regarded as a "necessary evil ". However, with the trend away from solvent to water-based compositions, the use of acticides in coatings is increasing. Note de contenu : - Microorganisms - Bacteria - Fungi (mold, mildew) - Algae - Susceptible (bio-degradable) paints, coatings and substrates - Paints - sources of microbiological contamination - Bio-degradation of latex (emulsion) paints - Susceptible coatings : wood finishes - Biocides used in paints and coatings - In-can preservative (biocides and fungicides) - Dry film/substrate preservatives Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10992 [article]

Réservation

Réserver ce document

Exemplaires (2)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
000615	-	Périodique	Bibliothèque principale	Documentaires	Disponible
000616	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Colour perspectives in yellow, red and brown / Frank Rothbarth in EUROPEAN COATINGS JOURNAL (ECJ), N° 4/00 (04/2000)

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 4/00 (04/2000) . - p. 62-63 Titre : Colour perspectives in yellow, red and brown Type de document : texte imprimé Auteurs : Frank Rothbarth, Auteur Année de publication : 2000 Article en page(s) : p. 62-63 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : They came from Brazil, Australia, Poland, China, the USA, South Africa and many other regions of the world - more than 100 experts from 21 countries attended a conference on current economic, production-related and, of course, applications-related prospects for iron oxide pigments. The event, which also included a workshop on the reproducibility of shades held on the previous day, took place on 9 and 10 March 2000 at the Grand Hyatt Hotel in Berlin/Germany. The organisers were intertech Corp., a conference organiser and consultancy firm based in Portland, Maine/USA. Note de contenu : - Standard automotive paints - colour effects dominate - Powder coatings - pigment surface modification determines coatings properties - Corrosion protection - micaceous iron oxide is a proven inhibitor. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10993 [article]

Réservation

Réserver ce document

Exemplaires (2)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
000615	-	Périodique	Bibliothèque principale	Documentaires	Disponible
000616	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Evaluation of siliconized epoxy coatings by electrochemical impedance spectroscopy / S. Ananda Kumar in EUROPEAN COATINGS JOURNAL (ECJ), N° 4/00 (04/2000)

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 4/00 (04/2000) . - p. 64-77 Titre : Evaluation of siliconized epoxy coatings by electrochemical impedance spectroscopy Type de document : texte imprimé Auteurs : S. Ananda Kumar, Auteur ; M. Alagar, Auteur ; K. P. O. Mahesh, Auteur ; T. S. N. Sankara Narayanan, Auteur ; V. Mohan, Auteur Année de publication : 2000 Article en page(s) : p. 64-77 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : Solvent free siloxane modified epoxy coatings were developed by interpenetrating technique. The corrosion resistant behaviour of siliconized epoxy coating systems with 25% zinc powder cured with four different curatives has been investigated by Electrochemical Impedance Spectroscopy (EIS). The results are comparable with those obtained from neutral salt spray tests. The siloxane (10%) modified epoxy coating system A with 25% zinc powder cured by hexamethylene diamine offers maximum corrosion protection to steel surface. Note de contenu : - Preparation of siloxane modified epoxy coating system - Preparation of prepolymer mix - Siloxane introduction into epoxy coating system - Electrode preparation - Impedance measurements - Formation of a low frequency diffusion tail confirms that the corrosion process is a diffusion controlled reaction - The resistance and the capacitance values of coating systems A, B, C and D are in the range of 10^9 ohm.cm² and 10^-10 F - Better corrosion protection of steel surfaces - The Bode plot can be explained with the help of threshold frequency limits and the variation of logarithmic values of impedance with frequency - The data analysis of the coating systems A,B,C, and D confirms the existence of a single constant Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10994 [article]

Réservation

Réserver ce document

Exemplaires (2)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
000615	-	Périodique	Bibliothèque principale	Documentaires	Disponible
000616	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Cathodic corrosion protection through zinc dust coatings / Jörg Vogelsang in EUROPEAN COATINGS JOURNAL (ECJ), N° 4/00 (04/2000)

[article]  inEUROPEAN COATINGS JOURNAL (ECJ) > N° 4/00 (04/2000) . - p. 86-87 Titre : Cathodic corrosion protection through zinc dust coatings Type de document : texte imprimé Auteurs : Jörg Vogelsang, Auteur Année de publication : 2000 Article en page(s) : p. 86-87 Langues : Anglais (eng) Catégories : Charges (matériaux) Métaux -- Revêtements protecteurs Protection cathodique Zinc Index. décimale : 667.9 Revêtements et enduits Note de contenu : - Fig. 1 : Cathodic protection is provided if the zinc content of the coating is sufficiently high - Fig. 2 : Corrosion products of zinc such as zinc hydroxide form on the steel surface - Fig. 3 : Which, together with zinc dust particles, stop up the pinholes and defects - Fig. 4 : Together with carbon dioxide from the dioxide from the atmosphere, sparingly soluble zinc carbonate is formed Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33510 [article]

Réservation

Réserver ce document

Exemplaires (2)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
000615	-	Périodique	Bibliothèque principale	Documentaires	Disponible
000616	-	Périodique	Bibliothèque principale	Documentaires	Disponible