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Quantifying abrasive-blasted surface roughness profiles using scanning electron microscopy / Stuart G. Croll in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 5 (09/2020)
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Titre : Quantifying abrasive-blasted surface roughness profiles using scanning electron microscopy Type de document : texte imprimé Auteurs : Stuart G. Croll, Auteur ; Scott A. Payne, Auteur Année de publication : 2020 Article en page(s) : p. 1231–1242 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosifs
Anticorrosion
Caractérisation
Microscopie électronique à balayage
Revêtements protecteurs
Rugosité
Surfaces (Physique)Index. décimale : 667.9 Revêtements et enduits Résumé : Rough surface profiles are specified for metal surfaces so that corrosion preventative coatings adhere well and provide long-term protection. Simple stylus scans and replica tape are widely used in industry to characterize surfaces and control the quality of surface preparation. Unfortunately, a scientific, quantitative connection between adhesion and surface profile parameters remains unclear. Stereo-pair images from scanning electron microscopy, SEM, were used to digitally reconstruct and then characterize 3D surfaces, which is a technique that seems previously unreported in coatings applications. SEM results were consistent with those from a stylus profilometer, but the data from a surface scan are much more numerous than from a line scan, and SEM can provide very high magnifications. 3D surfaces at high magnification gave larger values for the increase in area developed by the abrasive blasting than were determined at lower magnifications and by the stylus profilometer. Nevertheless, both techniques showed that the surface roughness height and ramification was far less than might be expected from illustrations in the existing literature on coatings’ adhesion. Quantified characterization, with details shown at high magnification, may provide scientific insight into how the various features of a roughened surface enhance the adhesion of protective coatings. Note de contenu : Introduction
- Surface profile statistics
- Experimental methods
- Results and discussion : Stylus profilometry - SEM profilometryDOI : https://doi.org/10.1007/s11998-020-00342-3 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-020-00342-3.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34569
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 17, N° 5 (09/2020) . - p. 1231–1242[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22303 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Quantifying haptics : Comparing the haptics and physical measurement of surfaces of wooden flooring Type de document : texte imprimé Auteurs : Gerhard Grüll, Auteur ; Igor Scotland, Auteur ; Irène Spitaler, Auteur ; Martin Teibinger, Auteur Année de publication : 2013 Article en page(s) : p. 96-99 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse sensorielle
Bois
Confort
Microscopie électronique à balayage
Revêtements de sols
Rugosité
Température
ToucherIndex. décimale : 667.9 Revêtements et enduits Résumé : What are the factors that influence haptics and the comfortable feel of surfaces of the different surface properties of wooden floorings, particularly when the wood has been treated with oil or wax ? Results of the assessment by touch of the haptics and perceived temperature of different surfaces by test persons were compared to quantitative measurements of surface roughness and thermal properties. Note de contenu : - Measuring roughness with SEM
- Correlating the results of the test persons with the profilometry
- Temperature perception via hands and feet
- Untreated felt warmerEn ligne : https://drive.google.com/file/d/1D3iBFmyRJSVZ6yLeQpsJlahlwu8BMkCa/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17717
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 3 (03/2013) . - p. 96-99[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14777 - Périodique Bibliothèque principale Documentaires Disponible Reflectometry of drying latex paint / Nick J. Elton in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 11, N° 2 (03/2014)
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Titre : Reflectometry of drying latex paint Type de document : texte imprimé Auteurs : Nick J. Elton, Auteur ; Anabelle Legrix, Auteur Année de publication : 2014 Article en page(s) : p. 185-197 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Brillance (optique)
Formulation (Génie chimique)
Latex
Réfractométrie
Revêtements:Peinture
Rugosité
Séchage
Spectroscopie de réflectanceIndex. décimale : 667.6 Peintures Résumé : The optical properties of pigmented coatings containing titanium dioxide, calcined and hydrous kaolin, and ethylene–vinyl acetate latex at various pigment volume concentrations were measured during drying using the technique of polarized light reflectometry. Gloss (at two acceptance angles), effective refractive index (RI), microroughness, and backscattered intensity were obtained simultaneously as a function of time. It is shown that the gloss response depends on measurement geometry and the combined effects of several sample physical properties and therefore requires caution in interpretation. The combination of RI, microroughness and backscatter provides more direct information on physical transitions during drying and fits with a three-stage description of drying. Differences in drying due to pigment aspect ratio are relatively small, but the platy kaolin appears to extend the period required for solids immobilization and also prolongs measurable development of surface microstructure during film formation. Note de contenu : - THE REFLECTOMETRY TECHNIQUE : Gloss from a microrough surface - Backscatter measurement
- PREPARATION AND MEASUREMENT OF PAINTS
- RESULTS AND DISCUSSION : Gloss - RI, microroughness, and backscatter - Discussion - Effect of pigment shape on dryingDOI : 10.1007/s11998-013-9511-5 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-013-9511-5.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21163
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 11, N° 2 (03/2014) . - p. 185-197[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 16196 - Périodique Bibliothèque principale Documentaires Disponible Searching for a compromise formula / Christian Knöpfle in KUNSTSTOFFE INTERNATIONAL, Vol. 107, N° 1-2 (01-02/2017)
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Titre : Searching for a compromise formula : Study on the influence of process parameters on the quality of MIM-parts Type de document : texte imprimé Auteurs : Christian Knöpfle, Auteur Année de publication : 2017 Article en page(s) : p. 25-28 Langues : Anglais (eng) Catégories : Analyse de variance En statistique, l'analyse de la variance (terme souvent abrégé par le terme anglais ANOVA : ANalysis Of VAriance) est un ensemble de modèles statistiques utilisés pour vérifier si les moyennes des groupes proviennent d'une même population. Les groupes correspondent aux modalités d'une variable qualitative (p. ex. variable : traitement; modalités : programme d'entrainement sportif, suppléments alimentaires ; placebo) et les moyennes sont calculés à partir d'une variable continue (p. ex. gain musculaire).
Ce test s'applique lorsque l'on mesure une ou plusieurs variables explicatives catégorielles (appelées alors facteurs de variabilité, leurs différentes modalités étant parfois appelées "niveaux") qui ont de l'influence sur la loi d'une variable continue à expliquer. On parle d'analyse à un facteur lorsque l'analyse porte sur un modèle décrit par un seul facteur de variabilité, d'analyse à deux facteurs ou d'analyse multifactorielle sinon. (Wikipedia)
Métaux -- Moulage par injection
Rugosité
Surfaces (Physique)
Surfaces -- AnalyseIndex. décimale : 669 Métallurgie : classer ici les ouvrages d'ensemble sur les métaux Résumé : Compared to conventional metal working MIM is a fairly new technology. Comprehensive process knowledge on effects which have an influence on the part quality is missing. MIM specialists from injection molding machine manufacturer Arburg carried out several specific tests with various parameters to enhance the knowledge about the process effects on the characteristics of metal injection molded parts. The results will facilitate a faster process optimization in the future. Note de contenu : - From green part to the measurement of the sintered part
- Statistically relevant influencing factors
- Air pockets, joint lines and shape distortion
- Main influence factor : the holding pressure
- FIGURES : 1. Green part of a test bar produced via MIM, with different measuring points for length, width and shape distortion used for measuring the sintered part - 2. Influence of the injection speed on joint lind appearance and surface roughness - 3. Influence of mold temperature and injection speed on surface roughness (relative values, respectively). In order to get to the lowest point, i.e. the smoothest surface, both parameters have to be set to a certain level - 4. The notch that forms in the part can be eliminated by evacuating the mold - 5. Filling behavior during formation of a notch (clockwise, from top left) : first, the melt detaches from the wall and flows to the end of the part. Then the part fills from the back and air gets trapped inside the cavity
- TABLES : 1. Factor definition : the experimental for the examination on the test bar waries five parameters - 2. Variance analysis : the results show the influence of the five examined parameters and their interactionson the surface roughness of the partEn ligne : https://drive.google.com/file/d/1wUGjNTcV5pyNpGxx9rLXpq9p3to0sBdH/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27919
in KUNSTSTOFFE INTERNATIONAL > Vol. 107, N° 1-2 (01-02/2017) . - p. 25-28[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 18707 - Périodique Bibliothèque principale Documentaires Disponible 18814 - Périodique Bibliothèque principale Documentaires Disponible Silica-embedded polyurea microspheres with rough surface for matte leather finishing / Liang Jia in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVII, N° 5 (05/2022)
[article]
Titre : Silica-embedded polyurea microspheres with rough surface for matte leather finishing Type de document : texte imprimé Auteurs : Liang Jia, Auteur ; Li Wang, Auteur ; Jing Li, Auteur ; Jun Xiang, Auteur ; Yi Chen, Auteur ; Haojun Fan, Auteur Année de publication : 2022 Article en page(s) : p. 184-194 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Cuirs et peaux -- Finition
Microsphères
Polymères en émulsion
Polyurée
Polyuréthanes
Rugosité
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.Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : A type of polyurea microspheres with rough surfaces and different sizes (1-12 μm), which was used for waterborne polyurethane matte leather coating, were prepared by precipitation polymerization in H 2 O/acetonitrile system, using isophorone diisocyanate as polymerized monomer, 2,4-diaminobenzenesulfonic acid sodium salt as hydrophilic monomer and nano-SiO 2 as surface roughener. The effect of the loading of isophorone diisocyanate and 2,4-diaminobenzenesulfonic acid sodium salt, the volume ratio of H 2 O/acetonitrile and the addition stage of nano-SiO 2 on the particle size and surface roughness were investigated so as to achieve the excellent matte effect of the coating. The results indicated that the adding of hydrophilic monomer can reduce the particle size of microspheres and improve its re-dispersibility in water, while the increase of the proportion of acetonitrile in the mixed solvent and the loading of polymerized monomer can enlarge the size of the polyurea microspheres. As surface roughener, with the increase of nano-SiO 2 loading, the surface roughness and the particle size of microspheres increase. When nano-SiO 2 is added at the stage of the reaction system getting turbid, the maximum surface roughness of polyurea microspheres can be achieved. Polyurea microspheres with particle size (1-2 μm) and high surface roughness have better matting effect, and the gloss of the prepared waterborne polyurethane coating can be adjusted to less than 1.6° (60°-incident Angle). Note de contenu : - EXPERIMENTAL : Materials - Preparation of polyurea microspheres with different surface roughness - Preparation of WPU matte coating - Characterization
- RESULTS AND DISCUSSION : Structural of polyurea microspheres - Influence of MPDSA-Na loading on microsphere size and its re-dispersibility - Influence of H2O/AN volume ratio on microsphere size - Influence of IPDI loading on microsphere size - Effect of nano-SiO2 loading on surface roughness of polyurea microspheres
- Influence of nano-SiO2 addition stage on surface roughness of polyurea microspheres - Influence of different polyurea microspheres on the gloss of WPU coating
- Table 1 : Dn and Dn/Dw of polyurea microspheres at different MPDSA-Na loading
- Table 2 : Dn and Dn/Dw of polyurea microspheres at differentH2O/AN
- Table 3 : Dn and Dn/Dw of polyurea microspheres at different IPDI loading
- Table 4 : Dn and Dn/Dw of polyurea microspheres at different nano-SiO2 loading
- Table 5 : The polyurea microspheres with different sizes and size distributionDOI : https://doi.org/10.34314/jalca.v117i5.4913 En ligne : https://drive.google.com/file/d/11yBWz4C1N2hxkNkOsI_QcjBpR8gbfic2/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37568
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXVII, N° 5 (05/2022) . - p. 184-194[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23398 - Périodique Bibliothèque principale Documentaires Disponible Siloxane coating with epoxy modification : optimization of adhesion to improve steel corrosion protection / M. Barletta in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 19, N° 3 (05/2022)
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