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[article]
Titre : Under pressure : New coatings to support the oil & gas industry in challenging environments Type de document : texte imprimé Auteurs : Lee Spoort, Auteur Année de publication : 2016 Article en page(s) : p. 42-46 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Haut extrait sec
Phénoplastes
Récipients sous pression
Réservoirs (récipients) -- revêtements protecteurs
Résistance chimique
Structures offshore -- Revêtements protecteursIndex. décimale : 667.9 Revêtements et enduits Résumé : Oil and gaz companies are drilling deeper, at higher temperatures and pressures than ever before and need new coatings to perform under these conditions. A new phenolic novolac resin system shows potential as a single-coat, quick-cure coating. Properties such as high acid resistance and toughness mean the coating can support a broad range of cargo, making it even more attractive to customers as a single solution. Note de contenu : - Alternative technologies are needed to produce high-temperature high-pressure (HTHP) coatings
- Highly resistant tank linings increase storage flexibility
- One-coat application and cure speed are crucial to increasing efficiency
- Ultra-high solids products offer safety and durability
- A new breed of lining formulations shows early success
- Testing to determine key properties
- experimental : Cure within 24 hours - Good intercoat adhesion - Cathodic disbondmentEn ligne : https://drive.google.com/file/d/1RDeFv32pWMxr0x6p1bFyK2r9aQIxIsoy/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25742
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 3 (03/2016) . - p. 42-46[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17994 - Périodique Bibliothèque principale Documentaires Disponible Understanding BPA-non-intent resin technology in food contact metal packaging coatings / Linqian Feng in COATINGS TECH, Vol. 16, N° 6 (06/2019)
[article]
Titre : Understanding BPA-non-intent resin technology in food contact metal packaging coatings Type de document : texte imprimé Auteurs : Linqian Feng, Auteur ; Andrew Detwiler, Auteur ; Jeffrey Clauson, Auteur ; Abraham Boateng, Auteur ; Hongkun He, Auteur ; Goliath Beniah, Auteur ; Thilanga Liyana Arachchi, Auteur ; H. Williams Chip, Auteur Année de publication : 2019 Article en page(s) : p. 28-37 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Aliments -- Emballages
Anticorrosion
Bisphénol A -- Suppression ou remplacement
Couches minces
Emballages métalliques
Essais (technologie)
Essais de résilience
Evaluation
Formulation (Génie chimique)
Résistance chimique
Spectroscopie d'impédance électrochimiqueIndex. décimale : 667.9 Revêtements et enduits Résumé : Consumer and regulatory pressure to replace bisphenol-A (BPA)-based materials in food contact metal packaging coatings has increased in recent years. Regardless of the controversy around BPA, consumers expect canned foods to be free of substances perceived to have negative health impacts while maintaining current shelf life and flavor characteristics. To address the market needs, formulators must innovate to deliver BPA-non-intent (BPA-NI) solutions that can meet or exceed the performance of BPA-based materials. This presents a challenge with regard to improving the resistance to food sterilization and stability during pack testing, and simultaneously balancing mechanical performance that allows the BPA-NI coating to withstand the aggressive canning process.
One response to these technical challenges has been the development of BPA-NI polyester resin technology through innovation on a monomer basis. This monomer innovation provides protective performance attributes such as resistance to corrosion and chemical attack, while enabling flexibility and adhesion through innovative resin and formulation design. Fundamental techniques such as electrochemical impedance spectroscopy (EIS) and cathodic disbonding were employed in combination with industrial fitness-for-use evaluations to demonstrate the improved protective barrier properties of novel non-BPA resins in formulated coatings. In addition, hydrophobicity and interfacial properties were studied to understand the impact of resin structure on coating performance from both experimental and computational perspectives. Applying this suite of methods and analysis builds strong structure-property correlations as part of a resin development strategy for novel non-BPA resins in metal packaging coating applications.Note de contenu : - EXPERIMENTAL PROCEDURES : Materials and sample preparation - Testing and evaluations (Electrochemical impedance spectroscopy (EIS) - Cathodic disbonding test - Food simulants and retord) - Computational modeling
- RESULTS AND DISCUSSION : EIS and corrosion mechanisms - Stage zero : Dry film - Stage 1 : Foodsimulant absorption - Stage 2 : Corrosion initiation - Stage 3~4 : Pore/breakthrough formation and delamination - Time-based corrosion resistance - Interface and adhesion
- Fig. 1 : Hydrolysis of model dihexanoate ester (hexanoate-glycol-hexanoate) compounds at 130°C
- Fig. 2 : 2—(a) Cathodic disbonding schematic and (b) lab setup of cathodic disbonding experimental setup
- Fig. 3 : Equivalent circuit model corresponding to a Bode plot with no time-constant (Stage zero corrosion)
- Fig. 4 : Equivalent circuit model corresponding to one time-constant in a Bode plot (Stage I corrosion)
- Fig. 5 : Equivalent circuit model corresponding to two time-constant (Stage II corrosion)
- Fig. 6 : Equivalent circuit model corresponding to a coated metal with Warburg character (Stage III ∼ IV corrosion). Schematics (a) and (b) correspond to equations (5) and (6), respectively
- Fig. 7 : Effect of exposure time on the EIS Bode plot for low-Tg low Mn Control B based clear PU
- Fig. 8 : EIS Bode plot to compare Resin A vs Control A in clear PU formulation, as well as Resin A in gold benzoguanamine phenolic after 5 h of exposure in LAS food simulant
- Fig. 9 : ime-based corrosion resistance of white PU coatings formulated with Control A, Control B, Resin A, and Resin B resins in 2% lactic acid food simulant for (a) 1st 48-h interval and (b) 2nd 48-h interval. Ten hours of relaxation time was given before the 1st and 2nd test intervals. Corrosion resistance is identified by the impedance value at 0.1 Hz
- Fig. 10 : A comparison of corrosion resistance of white PU coatings formulated with Control A, Control B, Resin A, and Resin B resins after 106 h, in 2% lactic acid food simulant
-Fig. 11 : (a) LogP values calculated for glycol (G1)-terephthalic acid (T)-glycol (G2) trimer model compounds, where EG=ethylene glycol, BG=butylene glycol, PG=propylene glycol, NPG=neopentyl glycol, DG=diethylene glycol. (b) Hildebrand solubility parameters calculated from molecular dynamics simulations. The color codes are used to rate the values, where Green=smallest value and Red=greatest value
- Fig. 12 : EIS bode plot to compare Resin A vs Control A in clear PU formulation after 12 days of exposure in LAS food simulant
- Fig. 13 : Images of clear PU coatings formulated with Resin A and Control A (a) after 3% acetic acid retort and (b) after cathodic disbonding test whereby 5V was applied for 60 sec
- Fig. 14 : Quantifying cathodic disbonding failures of Control A-based clear PU coatings through pixels counting
- Table 1 : Details of BPA-NI polyestser resins utilized in this study
- Table 2 : Details of formulation components utilized in this study
- Table 3 : Formulation details of gold benzoguanamine phenolic formulation
- Table 4 : Formulation details of white and clear PU formulationsEn ligne : https://drive.google.com/file/d/1GM1X2P5qhHB9ENgQzeyxlyuJg2J5yzEO/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32719
in COATINGS TECH > Vol. 16, N° 6 (06/2019) . - p. 28-37[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21023 - Périodique Bibliothèque principale Documentaires Disponible Understanding the basic of chemical-resistant polyesters and vinyl esters / Gary Hall in JOURNAL OF PROTECTIVE COATINGS & LININGS (JPCL), Vol. 30, N° 11 (11/2013)
[article]
Titre : Understanding the basic of chemical-resistant polyesters and vinyl esters Type de document : texte imprimé Auteurs : Gary Hall, Auteur Année de publication : 2013 Article en page(s) : p. 34-45 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésion
Anticorrosion
Composites à fibres de verre
Copolymère vinyle ester
Epoxydes
Polyesters insaturésLes résines de polyesters insaturés (UP) sont obtenues par polycondensation
d’un ou de plusieurs diacides avec un ou plusieurs glycols, l’un, au moins, des constituants contenant une double liaison éthylénique susceptible de réagir ultérieurement sur un composé vinylique, acrylique ou allylique.
Par le terme résine polyester, on désigne en fait la dissolution du prépolymère polyester insaturé dans un solvant copolymérisable, le plus utilisé étant le styrène. C’est sous cette forme liquide que les résines polyesters sont livrées aux transformateurs.
Après addition de différents adjuvants, charges et renforts, divers procédés de transformation provoquent, sous l’action d’un système catalytique approprié, la copolymérisation finale de la résine en un objet thermodurcissable.
Les polyesters insaturés sont d’un usage relativement ancien (1950), essentiellement
dans le bâtiment (moulage au contact). Ils ont connu un renouveau important à partir de 1980, en particulier au niveau des formulations et de la fiabilité des procédés grâce au développement de technologies industrielles de moulage par injection et par compression dans l’industrie automobile.
Réservoirs (récipients) -- revêtements protecteurs
Résistance chimique
Revêtements -- Propriétés mécaniques:Peinture -- Propriétés mécaniques
Souplesse (mécanique)Index. décimale : 667.9 Revêtements et enduits Résumé : Unsaturated polyester resins based on maleic and fumaric acids have been known since the 1920s. In the late 1930s, the modern form of these resins was introduced when Charleton Ellis combined styrene with unsaturated polyester.
Polyester and vinyl ester resins have been used in severe chemical environments for 50 years in the form of mortars for chemical-resistant brickwork and in fiberglass reinforced plastic (FRP). These successes led to the development of chemical-resistant coatings and linings based upon these resins that offer superior resistance to a broad range of chemicals, especially acids, and to higher temperatures than most other coating types like epoxies and polyurethanes.
The terms "coatings" and "linings" are used throughout this article. For the purposes of this article, linings are composed of glass fabric, mat, or woven roving saturated with the cho¬sen resin. They are applied in sheets of fiberglass reinforce¬ment saturated in resin, which are then laid against the sub¬strate and rolled in place using a ribbed roller. Coatings are usually thinner than linings and are applied as a mixture by brush, roller, airless spray, and plural component spray.
This article describes the basic chemistry of polyesters and vinyl esters, properties, concerns with the materials, and application methods.Note de contenu : - BASIC CHEMISTRY
- PERFORMANCE CRITICAL PROPERTIES : Flexibility - Adhesion - Chemical resistance
- AREAS OF CONCERN
- APPLICATION METHODS
- ENVIRONMENTAL, SAFETY, AND HEALTH CONSIDERATIONSPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20723
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Code-barres Cote Support Localisation Section Disponibilité 15830 - Périodique Bibliothèque principale Documentaires Disponible Unique diol resin for improved performance of 2-component polyurethane floor coatings / John Florio in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 206, N° 4626 (11/2016)
[article]
Titre : Unique diol resin for improved performance of 2-component polyurethane floor coatings Type de document : texte imprimé Auteurs : John Florio, Auteur ; David Switala, Auteur ; Richard Shain, Auteur ; Michel Hourani, Auteur Année de publication : 2016 Article en page(s) : p. 32-35 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Composés aliphatiques
Composés aromatiques
Diols
Groupe hydroxyle
Polyisocyanates
Polyuréthanes
Réactions chimiques
Résistance chimique
Revêtements -- Propriétés mécaniques:Peinture -- Propriétés mécaniques
Revêtements bi-composant:Peinture bi-composant
Revêtements de sols:Peinture de sols
Vernis bi-composantIndex. décimale : 667.9 Revêtements et enduits Résumé : A 100% active diol modifying resin designed to enhance the performance of 2-component polyurethane coatings has been developed.
Polyurethane floor coatings require good abrasion resistance, hardness, chemical resistance and stain resistance. They also require good mechanical properties like tensile strength, hardness, ftexibility and tear resistance. A challenge for polyurethane coating formulators is to develop systems that meet these requirements with resin systems that have low viscosities without the use of volatile solvents.
A unique 100% active diol modifying resin designed to enhance the performance of 2-component (2K) polyurethane coatings has been developed. Four 100% non-volatile floor coating studies will be reviewed demonstrating the effect of modifying aromatic and aliphatic polyurethane systems. This diol modifying resin helps to produce films with higher tensile strength, elastic modulus, better abrasion resistance, higher hardness and improved chemical resistance versus the control formulations.Note de contenu : - PRIMARY HYDROXYL GROUPS AND REACTIVITY WITH POLYISOCYANATES
- EXPERIMENTAL : Experiment I. solventless aromatic clearcoat study - Experiment II. Solventless aromatic clearcoat study - Experiment III. Solventless aliphatic clearcoat study - Experiment IV. Solventless aliphatic filled studyEn ligne : https://drive.google.com/file/d/1L4fY8eHU6Gwi2UbFOHXIhzDFbFlxuFig/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27362
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Code-barres Cote Support Localisation Section Disponibilité 18474 - 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
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Code-barres Cote Support Localisation Section Disponibilité 20269 - Périodique Bibliothèque principale Documentaires Disponible Utilisation et hygiène au porter des semelles premières et des renforts / L. Radnoti in TECHNICUIR, N° 3 (03/1979)
PermalinkUV-curable powder coatings : Formulation of thick white finish for MDF / S. Zeren in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 87, B2 (06/2004)
PermalinkVersatile and valuable / Misty Huang in ADHESIVES AGE, Vol. 45, N° 4 (04/2002)
PermalinkA versatile, high-performance polyol chemistry for broad industrial market use / Jamie Dziczkowski in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 208, N° 4646 (11/2018)
PermalinkVersatile self-crosslinking polyurethane dispersion for low VOC coatings across multiple markets / Aditi Chavannavar in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 208, N° 4645 (10/2018)
PermalinkVersatile self-crosslinking polyurethane dispersion for low VOC coatings across multiple markets / Aditi Chavannavar in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 208, N° 4646 (11/2018)
PermalinkVinyl acetate-based alkaline-resistant scrim binder / Peter M. Zeimentz in JEC COMPOSITES MAGAZINE, N° 60 (10/2010)
PermalinkVinylesters for PSAs / François Simal in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 20, N° 1 (01/2013)
PermalinkLes vitrimères / Claire Pham in PLASTIQUES & CAOUTCHOUCS MAGAZINE, N° 912 (05-06/2014)
PermalinkPermalinkWaterborne resins for industrial wood coatings / Terri Carson in COATINGS TECH, Vol. 19, N° 5 (05-06/2022)
PermalinkWaterborne wood coatings made easy / Maria Almató in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 206, N° 4619 (04/2016)
PermalinkWeather-fast colours / Larry G. Lane in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 196, N° 4502 (07/2006)
PermalinkWhat security is offered in practice by standardised test procedures ? / Hans-Jürgen Alfort in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 10, N° 3 (2017)
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