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Understanding slip coefficient and tension creep testing of coatings used in slip-critical bolted connections / Bill Corbett in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 31, N° 1 (01/2014)
[article]
Titre : Understanding slip coefficient and tension creep testing of coatings used in slip-critical bolted connections Type de document : texte imprimé Auteurs : Bill Corbett, Auteur ; Carly McGee, Auteur Année de publication : 2014 Article en page(s) : p. 22-41 Langues : Américain (ame) Catégories : Assemblages à boulons
Calcul
Coefficient de glissement
Essais (technologie)
Essais dynamiques
Fluage
Métaux -- Revêtements protecteursIndex. décimale : 667.9 Revêtements et enduits Résumé : Bridges, buildings, and other structures commonly include designed bolted connections of steel beams, girders, and other structural members using connection/splice plates of various sizes and configurations. High-strength bolts are used to secure the connections. The holes in the steel members and the connection/splice plates are larger (typically 1/16-1/8 of an inch larger) than the boit shafts to enable the bolts to be inserted and tensioned against the washers and nuts. The interface of the connection/splice and the structural member is called a faying surface. Faying surfaces are not required to be coated, but are often protected to prevent corrosion at the interface and rust bleed on coated surfaces adjacent to the connection. When a designer elects to coat the faying surfaces, the coating used on these surfaces must have slip-resistant properties to reduce fatigue on the connection during loading/unloading cycles (e.g., vehicles traveling across a bridge deck). Therefore, before use, the coatings specified for these faying surfaces must be tested and classified for slip coefficient properties. Once the classified coating is applied, the connection points are masked to prevent subsequent coats from inadvertently contacting these areas.
There is no stipulation for specific coating types that must be used in these bolted connections, although zinc-rich primers are common and typically have slip resistance properties. Other generic coating types, including polyamide epoxy primers, have been tested and used. Other products, such as thermal spray coatings (various alloys, with and/or without a sealer) and roughened hot dip galvanized steel may be viable candidates, provided they have been tested and demonstrate slip-resistant properties.
The American Institute of Steel Construction (AISC) and the Research Council on Structural Connections (RCSC) publish the Specification for Structural Joints Using High Strength Bolts. The specification comprises ten sections, which only minimally address testing of coatings used in bolted joints. However, Appendix A, "Testing Method to Determine the Slip Coefficient for Coatings Used in Bolted Joints" contains four sections relating to coating testing (General Provisions; Test Plates and Coating of the Specimens; Slip Tests; and Tension Creep Tests). The focus of this article is on the testing required in Appendix A.
Note de contenu : - ESSENTIAL VARIABLES
- CORRECTION OF COATING THICKNESS DEFICIENCIES
- TEST PLATE DESIGN AND SURFACE PREPARATION
- TEST PLATE MOUNTING, COATING APPLICATION, AND CURING PROCEDURES
- COATING THICKNESS MEASUREMENT AND SELECTION OF CONTACT SURFACES
- TEST ASSEMBLIES : Slip coefficient test procedure - Slip coefficient calculation - Tension creep test procedure
- OTHER CONSIDERATIONS : 1. What is the effect (if any) of surface profile shape on the slip coefficient properties of coatings ? - 2. What is the effect (if any) of surface profile depth on the slip coefficient properties of coatings ? - 3. Is there a difference in slip coefficient properties when a coating is tested over a surface that has been power tool cleaned (i.e. SSPC-SP 11 or SP 15) versus abrasive blast cleaned ? - 4. Is there a curing "window" (both a minimum and a maximum set time prior to bolt-up) ? - 5. What is the effect of using a different type of thinner (acceptable for use by the coating manufacturer) on the slip coefficient properties ? - 6. What is the effect of using lesser or greater amounts of thinner ? - 7. Five replicate assemblies are tested for slip coefficient and then averaged to generate a single slip coefficient value. Is there an acceptable standard deviation between the replicate trials ? that is, what determines an "outlier" ? - 8. Mating of dissimilar coatingsPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20904
in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL) > Vol. 31, N° 1 (01/2014) . - p. 22-41[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 15990 - Périodique Bibliothèque principale Documentaires Disponible Understanding the links between rheology and particle parameters / A. Hill in SURFACE COATINGS INTERNATIONAL, Vol. 93, 4 (08/2010)
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Titre : Understanding the links between rheology and particle parameters Type de document : texte imprimé Auteurs : A. Hill, Auteur ; J. Duffy, Auteur Année de publication : 2010 Article en page(s) : p. 199-203 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Essais (technologie)
Particules (matières)
Potentiel zeta
Revêtements:Peinture
Rhéologie
RhéométrieIndex. décimale : 667.9 Revêtements et enduits Résumé : The properties of particulate materials, notably their size, size distribution and zeta potential (a measure of the charge on a particle), all effect the rheology of a coating material. Test results showing these effects in several different types of coatings are discussed here, where the rheology has been measured on a Malvern Bohlin Gemini rheometer, the particle size on a Malvern Mastersizer 2000 and the zeta potential on a Malvern Zetasizer Nano ZS. Note de contenu : - Relationship between particle size and rheology : Effects of volume fraction and polydispersity
- Relationship between zeta potential and rheologyEn ligne : https://drive.google.com/file/d/17G9uSgIEjO-k3fgAw5YosbDz6PZrHBxG/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16315
in SURFACE COATINGS INTERNATIONAL > Vol. 93, 4 (08/2010) . - p. 199-203[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 012402 - Périodique Bibliothèque principale Documentaires Disponible Unique waterborne alternatives to traditional solvent-based coatings for industrial wood applications / Laurie Morris in COATINGS TECH, Vol. 15, N° 6 (06/2018)
[article]
Titre : Unique waterborne alternatives to traditional solvent-based coatings for industrial wood applications Type de document : texte imprimé Auteurs : Laurie Morris, Auteur ; Alberdingk Boley, Auteur Année de publication : 2018 Article en page(s) : p. 30-37 Langues : Américain (ame) Catégories : Bois -- Revêtements
Dispersions et suspensions
Essai de dureté
Essais (technologie)
Essais de résilience
Formulation (Génie chimique)
Polyacryliques
Polymères en émulsion
Polyuréthanes
Résistance chimique
Résistance thermique
Revêtements -- Propriétés mécaniquesIndex. décimale : 667.9 Revêtements et enduits Résumé : Water-based coatings made from WB UV resins, acrylic emulsions, and polyurethane dispersions all are good candidates for industrial wood coatings. They have very good chemical resistance and mechanical propertie. They can be formulated at low VOCs and have low toxicity. They are viable alternatives to solvent-based chemistries. Note de contenu : - EXPERIMENTAL : WATERBORNE UV COATINGS : Panel preparation (UV coatings - Other coatings) - Test methods (Chemical/stain resistance - Scrape adhesion - Ball point pen indentation - Plasticizer resistance - Green print resistance - Hot print resistance - Boiling water resistance - Hot and cold check resistance - Edge soak - Formulations) - Testing - results
- EXPERIMENTAL : ACRYLIC EMULSION : Formulations - Panel preparation (Birch plywood - glass) - Testing - Results
- EXPERIMENTAL : POLYURETHANE DISPERSION : Formulations - Panel preparation (3BH leneta cards - Birch plywood) - Testing - Results
- Fig. 1 : Chemical resistance (KCMA) 24-hour dwell (except mustard 1-hour dwell)
- Fig. 2 : Chemical resistance (other) 16-hour dwell
- Fig. 3 : Scrape adhesion and ball point pen indentation resistance
- Fig. 4 : Plasticizer, green print, and hot print resistance
- Fig. 5 : Boiling weter resistance
- Fig. 6 : Edge soak and hot cold check resistance
- Fig. 7 : Results from Koening pendulum hardness testing after 7 and 14 days
- Fig. 8 : Mustard
- Fig. 9 : Coffee, ethanol, and red wine
- Fig. 10 : Block resistance-room temperature, 1ib/sq in., overnight
- Fig. 11 : Block resistance - 50°C, 1000 g/sq in., 30 min.
- Fig. 12 : Boiling water resistance
- Fig. 13 : Scrape adhesion
- Fig. 14 : ABI emulsion vs competitive emulsion
- Fig. 15 : Chemical resistance-Leneta card
- Fig. 16 : Chemical resistance-birchpanel
- Fig. 17 : Boiling water resistance
- Fig. 18 : Scrape adhesion-5 kg
- Fig. 19 : Edge soak
- Fig. 20 : Taber abrasion-mg lost
- Fig. 21 : Koenig pendulum hardness
- Table 1 : Waterborne UV coatings formulations
- Table 2 : Waterborne UV coatings testing data
- Table 3 : Acrylic emulsion formulations
- Table 4 : Polyurethane dispersion formulationsEn ligne : https://drive.google.com/file/d/1pvbStFXZOZrDs2hfll7o9-pFugyYKIJE/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31204
in COATINGS TECH > Vol. 15, N° 6 (06/2018) . - p. 30-37[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20269 - Périodique Bibliothèque principale Documentaires Disponible Using graphene to sustainably fight corrosion / Rafiq Isa in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 211, N° 4671 (10/2021)
[article]
Titre : Using graphene to sustainably fight corrosion Type de document : texte imprimé Auteurs : Rafiq Isa, Auteur ; Amirah Mat Lani, Auteur Année de publication : 2021 Article en page(s) : p. 57-59 Langues : Anglais (eng) Catégories : Anticorrosifs
Anticorrosion
Essais (technologie)
GraphèneLe graphène est un cristal bidimensionnel (monoplan) de carbone dont l'empilement constitue le graphite. Il a été isolé en 2004 par Andre Geim, du département de physique de l'université de Manchester, qui a reçu pour cette découverte le prix Nobel de physique en 2010 avec Konstantin Novoselov. Il peut être produit de deux manières : par extraction mécanique du graphite (graphène exfolié) dont la technique a été mise au point en 2004, ou par chauffage d'un cristal de carbure de silicium, qui permet la libération des atomes de silicium (graphène epitaxié). Record en conduction thermique jusqu'à 5300 W.m-1.K-1. C'est aussi un matériaux conducteur.
Nanotubes
Revêtements -- Additifs
Revêtements protecteursIndex. décimale : 667.9 Revêtements et enduits Résumé : In this study, we explain how the introduction of graphene nanotubes could offer a more cost effective, eco-friendly solution when preventing corrosion.
Keeping steel and metal structures safe from corrosion can be difficult, especially when traditional coatings regularly contain toxic chemicals that harm the environment and aquatic life. Corrosion can be defined as an electrochemical reaction between a material, usually a metal, and its environment that causes a deterioration of the material and its properties.
It is a naturel process which converts refined metals into a more chemically stable form, such as oxide hydroxide, carbonate or sulphide. In summary, it is the graduai destruction (or ageing) of materials by chemical and/or its electrochemical reaction with its environment.Note de contenu : - The cost of corrosion
- What are corrosion resistant coatings ?
- The future of anti-corrosion coatings
- Graphene nanotubes for anti-corrosion solutions
- Green means go ! Future applications for IGL
- Table 1 : Atmosphere corrosivity categories and examples of typical environments
- Table 2 : Test resultsEn ligne : https://drive.google.com/file/d/1Pulf6ZChbdYyxhaifbWjCOsFyqCeiTpb/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36773
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 211, N° 4671 (10/2021) . - p. 57-59[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23124 - Périodique Bibliothèque principale Documentaires Disponible VAE copolymer emulsions in latex paints / Artur Palasz in EUROPEAN COATINGS JOURNAL (ECJ), N° 1 (01/2022)
[article]
Titre : VAE copolymer emulsions in latex paints : Characteristics of formulations for interior applications Type de document : texte imprimé Auteurs : Artur Palasz, Auteur Année de publication : 2022 Article en page(s) : p. 48-51 Langues : Anglais (eng) Catégories : Copolymère éthylène acétate de vinyle
Essais (technologie)
Essais de résilience
Essais dynamiques
Formulation (Génie chimique)
Latex
Liants en phase aqueuse
Polymères en émulsion
Revêtements en phase aqueuse:Peinture en phase aqueuseIndex. décimale : 667.9 Revêtements et enduits Résumé : The properties of four VAE emulsions available on the European market are compared with regards to their properties in latex paint formulations. VAE emulsions are a very important binder in water-borne architectural paints. Their proper characterisation requires extensive laboratory tests and comparisons, among others, of VAE emulsion binders. Results show the difficulties inherent in determining the appropriate VAE emulsion for a process due to the wide range of options. Note de contenu : - Composition of VAE emulsions
- Lack of information
- Comparison of standard VAE emulsions
- Test preparation and methods
- Wet-scrub resistance
- Washability and dirt pick-up index
- Yellowness index exposure test
- Choosing the right VAE emulsion
- Table 1 : Formulations of paints with VAE emulsion
- Table 2 : Scrubbabiity test results
- Table 3 : Test results of washability and dirt pick-up indexEn ligne : https://drive.google.com/file/d/1r72eYE5-ytZ_jvrnjeIW6KB9Q6rg87NT/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36850
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 1 (01/2022) . - p. 48-51[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23172 - Périodique Bibliothèque principale Documentaires Disponible Validation of a new in vitro Sun Protection Factor method to include a wide range of sunscreen product emulsion types / Marc Pissavini in INTERNATIONAL JOURNAL OF COSMETIC SCIENCE, Vol. 42, N° 5 (10/2021)
PermalinkVapor phase assembly of benzotriazole and octadecylamine complex films on aluminum alloy surface / Hong-Liang Zhang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 2 (03/2021)
PermalinkVirtual mold sampling for robust processes / Christian Hopmann in KUNSTSTOFFE INTERNATIONAL, Vol. 103, N° 10 (10/2013)
PermalinkPermalinkViscosity analysis : flow curve, yield stress and creep / Robert G. McGregor in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 22, N° 10 (10/2015)
PermalinkViscosity testing : adhesive and sealants - can one instrument do it all ? / Robert G. McGregor in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 206, N° 4627 (12/2016)
PermalinkVisual methods demonstrate colour protection / Lidia Kulcsar in PERSONAL CARE EUROPE, Vol. 12, N° 5 (11/2018)
PermalinkWashability of glutaraldehyde-chrome tanned garment and glove leathers / S. J. Viola in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXI (Année 1966)
PermalinkPermalinkWater on wood / Felix Baah in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 195, N° 4484 (01/2005)
PermalinkWater-thinnable coatings / Ganesh Datt Bajpai in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 198, N° 4524 (05/2008)
PermalinkWater vapor permeability of leather and leatherlike sheet materials : a new approach / Ludwig Seligsberger in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXX (Année 1975)
PermalinkWaterborne coatings based on acrylic latex containing nanostructured ZnO as an active additive / Martina Dankova in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 2 (03/2020)
PermalinkPermalinkWaterproof leather for high performance footwear / C. D. Hey in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 67 (Année 1983)
PermalinkWaterproofing of sole leather / P. L. Muthiah in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 54, N° 5 (05/1970)
PermalinkWear resistance evaluation method of painting LADA cars / S. E. Pavlihkin in EUROPEAN COATINGS JOURNAL (ECJ), N° 1-2/01 (01-02/2001)
PermalinkWhy measure permeability ? / Jérôme Raynal in JEC COMPOSITES MAGAZINE, N° 100 (10/2015)
PermalinkPermalinkWood surfaces protected with transparent multilayer UV-cured coatings reinforced with nanosilica and nanoclay. Part II : Application of a standardized test method to study the effect of relative humidity on scratch resistance / William Nguegang Nkeuwa in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 11, N° 6 (11/2014)
PermalinkZinc-rich primer and UHP waterjetting in severe marine environments / Philippe Le Calvé in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 34, N° 3 (03/2017)
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