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Characterisation of coatings and coating materials by analytical centrifugation / U. Rietz in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 209, N° 4650 (04/2019)
[article]
Titre : Characterisation of coatings and coating materials by analytical centrifugation Type de document : texte imprimé Auteurs : U. Rietz, Auteur ; T. Sobisch, Auteur ; D. Lerche, Auteur ; Arnold Uhl Lerche, Auteur Année de publication : 2019 Article en page(s) : p. 40-43 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Adhésion
Anticorrosifs
Anticorrosion
Caractérisation
Centrifugation
Epoxydes
Métaux -- Revêtements protecteurs
Revêtements -- Analyse
Revêtements organiques
SédimentationIndex. décimale : 667.9 Revêtements et enduits Résumé : Most finished products have coated surfaces for varions reasons. Building constructions have to withstand manifold external influences, eg temperature and humidity, UV radiation or erosion caused by rain. Cutting tools like drills are exposed to high mechanical stress. To extend the work life, their surfaces are often modified with protective coatings. Coating systems for car bodies have to protect metal substrates from corrosion but also provide an appealing appearance. As the mentioned examples show, most coatings have to fulfil a combination of different requirements.
The paper introduces CAT-Technology, (Centrifugal Adhesion Testing), which allows for testing eight samples under identical conditions. Among other application examples, the curing behaviour of corrosion protection paints will be highlighted. As a complimentary tool to CAT-Technology analytical centrifugation based on STEP Technology® is suggested for coating laboratories. This proved to be a powerful instrument for characterisation of base materials and finished products. Other aspects to be considered are coating materials properties from composition/formulation over production until application to final product surfaces.Note de contenu : - Measurement principle-cat-technology
- Preparation of test specimens
- Experimental
- Anti-skid coatings
- Epoxy paints for corrosion protection
- Step technology
- Fig. 1 : Measurement principle of CAT-technology
- Fig. 2 : Joining a test specimen
- Fig. 3 : RPM and temperature progression during a measurement
- Fig. 4 : Strength obtined for anti-skid coatings
- Fig. 5 : Failure pattern - cohesive failure within coating
- Fig. 6 : Failure pattern
- Fig. 7 : Strength development and comparison
- Fig. 8 : NIR-transmission profiles for pigment dispersed by laboratory stirrer (upper two) and pigment disperses in a ball mill (lower two), RCA 30, 20°C. Region of interest 7 mm below cell filling height at 106 mm shown. First profile after 10s red, last profile after 40min green
- Fig. 9 : Sedimentation velocities of the samples, mean RC1 30, 20°
- Table 1 : Masses of components
- Table 2 : Paint preparation details
- Table 3 : Strength paint A
- Table 4 : Strength paint BEn ligne : https://drive.google.com/file/d/1WvW88zrwHain2i1ROoxjIb3-CdShBaf4/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32603
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 209, N° 4650 (04/2019) . - p. 40-43[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20959 - Périodique Bibliothèque principale Documentaires Disponible 21052 - Périodique Bibliothèque principale Documentaires Disponible Characterisation of finite length composites / W. Gleissle in INTERNATIONAL POLYMER PROCESSING, Vol. XVIII, N° 1 (03/2003)
[article]
Titre : Characterisation of finite length composites : Rheological Studies of Processed PP-Glass Composites Type de document : texte imprimé Auteurs : W. Gleissle, Auteur ; J. Curry, Auteur Année de publication : 2003 Article en page(s) : p. 20-32 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation
Composites à fibres de verre
Compoundage
Extrudeuse bi-vis
Polypropylène
Rhéologie
Vis d'extrusion simpleIndex. décimale : 668.9 Polymères Résumé : This paper is a technical report about the structure and the rheological behaviour of processed polypropylene-glass fibre composites. The present studies has been carried out as a part of the international project on the Characterization of Finite Length Composites initiated and organized by the IUPAC Working Party : Structure and Properties of Commercial Polymers. Seven industrial and university laboratories in Europe and in USA worked together in a common project to investigate the influence of the processing conditions on the rheology and manufacturing behaviour of polymer-glass composites preprocessed in a twin screw extruder. All investigations presented concern the influence of the processing procedure on the structure of the composites such as fiber length destribution, fiber orientation, distribution of the fibre concentration in the sample and the rheology of the composites. The flow behaviour dependent on the processing conditions has been measured using capillary rheometers to investigate the viscosity functions, the entrance and outlet pressures losses as well as for observations of the shape and internal structure of extruded composites. Torsional rheometers for low shear rate, oscillatory and transient viscosity behaviour and for the quantification of fibre orientation with ongoing shear process. Additionaly queeze flow experiments are made.
Most laboratories used analogous recording sytems to documente the primary experimental results. So results are partially given here as direct copies from the original data readings. The different data handling and the transfer of data from laboratory to laboratory for comparison of results leads sometimes to unavoidable inhomogeneous (due to the style and possibilities of the different laboratories) presentation of the results. The present report is a result of data collecting, data comparison and documentation of results over a period of nearly ten years.Note de contenu : - PROCESSING PROCEDURE
- MATERIAL CHARACTERIZATION-FIBRE LENGHT REDUCTION : Average fibre length and fibre length distribution
- FLOW BEHAVIOUR - Capillary flow-slit-and round bore capillaries - Torsional flow : Parallel plate and cone and plate rheometer
- OPTICAL OBSERVATIONS - Fibre orientation in capillary flow-die entry observations - Fibre orientation in torsional flow - Shape of the extrudatesDOI : 10.3139/217.1721 En ligne : https://drive.google.com/file/d/1Uuc19PnmbaWy8lSHX7FmYq9rEJ5HnGTK/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15847
in INTERNATIONAL POLYMER PROCESSING > Vol. XVIII, N° 1 (03/2003) . - p. 20-32[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 001023 - 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]
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 newtoniensIndex. 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 liquidsPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10990
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Code-barres Cote Support Localisation Section Disponibilité 000615 - Périodique Bibliothèque principale Documentaires Disponible 000616 - Périodique Bibliothèque principale Documentaires Disponible Characterisation of novel regenerated cellulosic, viscose, and cotton fibres and the dyeing properties of fabrics / Taina Kamppuri in COLORATION TECHNOLOGY, Vol. 131, N° 5 (10/2015)
[article]
Titre : Characterisation of novel regenerated cellulosic, viscose, and cotton fibres and the dyeing properties of fabrics Type de document : texte imprimé Auteurs : Taina Kamppuri, Auteur ; Marianna Vehviläinen, Auteur ; Arja Puolakka, Auteur ; Mari Honkanen, Auteur ; Minnamari Vippola, Auteur ; Marja Rissanen, Auteur Année de publication : 2015 Article en page(s) : p. 396-402 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation
Colorants
CotonLe coton est une fibre végétale qui entoure les graines des cotonniers "véritables"(Gossypium sp.), un arbuste de la famille des Malvacées. Cette fibre est généralement transformée en fil qui est tissé pour fabriquer des tissus. Le coton est la plus importante des fibres naturelles produites dans le monde. Depuis le XIXe siècle, il constitue, grâce aux progrès de l'industrialisation et de l'agronomie, la première fibre textile du monde (près de la moitié de la consommation mondiale de fibres textiles).
Fibres cellulosiques
Fibres textiles synthétiques -- Propriétés tinctoriales
Fibres végétales -- Propriétés tinctoriales
Morphologie (matériaux)
Structure cristalline (solide)
Teinture -- Fibres textiles
Teinture -- Fibres textiles synthétiques
ViscoseIndex. décimale : 667.3 Teinture et impression des tissus Résumé : There is a global demand for constant increase in the production of textile fibres. Currently, the market for cellulosic fibres is dominated by cotton and viscose fibres. However, new alternative cellulosic fibres are being sought to meet the growing demand. The dyeing properties of novel fibres aiming at the marketplace are among the properties that determine their applicability to textiles. Recently, a novel process for producing cellulosic fibres, the Biocelsol process, has been scaled up so that the spinning of yarn from Biocelsol fibres is now possible. In this study, the reactive dye Levafix CA Blue was applied to cellulosic fabrics made from viscose, cotton, and Biocelsol yarns. The crystalline structure and morphology of the fibres were studied by Fourier transform infrared spectroscopy and field-emission scanning electron microscopy. The crystalline structure and morphology of the Biocelsol fibres resembled those of viscose fibres, but, owing to higher water absorption, the Biocelsol fabric had a higher dye exhaustion. The colour yield of the Biocelsol fabric was 62% and 41% higher than that of cotton and viscose fabrics respectively, suggesting that less dye is needed to gain a shade in Biocelsol fabric than in viscose and cotton fabrics. Note de contenu : - EXPERIMENTAL : Materials - Characterisation of fibres - Properties of yarns and fabrics - Dyeing of fabrics - Fastness properties
- RESULTS AND DISCUSSIONS : Characterisation of cellulosic fibres - Properties of yarns and fabrics - Reactive dyeing of fabrics - Colour fastnessDOI : 10.1111/cote.12163 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12163 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24668
in COLORATION TECHNOLOGY > Vol. 131, N° 5 (10/2015) . - p. 396-402[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17461 - Périodique Bibliothèque principale Documentaires Disponible Characterisation of peroxide value in natural oils and fats by Fourier Transform Spectroscopy / Zhou Hualong in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 86, N° 4 (07-08/2002)
[article]
Titre : Characterisation of peroxide value in natural oils and fats by Fourier Transform Spectroscopy Type de document : texte imprimé Auteurs : Zhou Hualong, Auteur ; Minghua Liu, Auteur ; Junshu Zhang, Auteur ; Zhang Xinshen, Auteur Année de publication : 2002 Article en page(s) : p. 153-156 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation
Fourier, Spectroscopie infrarouge à transformée de
Huile de colza
Huiles et graisses -- Analyse
Huiles et graisses -- Oxydation
Huiles et graisses de poissons
Indice de peroxydeIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : A primary Fourier transform infrared (FTIR) spectroscopic method was applied here to characterise the peroxide value (PV) in natural oils and fats such as refined rapeseed oil, fish and also rape oil with partial ester exchange so that the changes after the catalysed oxidation of the above three kinds of oils and fats could be studied. It can be concluded that the changes in the oxidised oils and fats can be characterised by FTIR spectroscopy directly and quantitatively. R - OOH which can react with sulphites is the main oxidation product. Note de contenu : - EXPERIMENTAL PROCEDURE : Materials - Instruments and apparatus - Preparation of samples
- RESULTS AND DISCUSSION : Synthesis mechanism - Spectrum analysis and discussion
- Table 1 : PV of pure rapeseed oil
- Table 2 : PV of rapeseed oil with partial ester exchangeEn ligne : https://drive.google.com/file/d/1bVlxzKL1zRnlKy5AZzxZc3viFQiAV5-O/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39905
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