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Water permeation and corrosion resistance of single- and two-component hydrophobic polysiloxane barrier coatings / X. Sun in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 6 (11/2017)
[article]
Titre : Water permeation and corrosion resistance of single- and two-component hydrophobic polysiloxane barrier coatings Type de document : texte imprimé Auteurs : X. Sun, Auteur ; S. Turnage, Auteur ; Nicholas Dhuyvetter, Auteur ; Erick B. Iezzi, Auteur ; Y. Yang, Auteur ; B. Chang, Auteur ; N. C. Muthegowda, Auteur ; S. K. Balijepalli, Auteur ; L. P. Wang, Auteur ; K. N. Solanki, Auteur ; K. Rykaczewski, Auteur Année de publication : 2017 Article en page(s) : p. 1247-1258 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosifs
Anticorrosion
Essais de résilience
Fourier, Spectroscopie infrarouge à transformée de
Hydrophobie
Matériaux -- Propriétés barrières
Microscopie électronique à balayage
Revêtements protecteurs
Spectroscopie d'impédance électrochimique
Test d'immersionIndex. décimale : 667.9 Revêtements et enduits Résumé : The degradation of corrosion preventative coatings contributes to the high cost and time requirements for maintaining structures in harsh environments. However, the development of new hydrophobic coatings holds the promise of extending the usable life of structures in marine environments. In this work, we quantify the barrier properties and corrosion resistance of two novel highly hydrophobic polysiloxane formulations and the legacy silicone alkyd topcoat used on the topside of Navy’s ships, all with haze gray pigmentation. Based on FTIR-ATR and EIS measurements of the pristine coatings, both the single- (1K) and the two-component (2K) polysiloxane provide significantly improved barrier characteristics (lower water diffusion coefficient and capacitance) than the silicone alkyd. These results were confirmed through a 3-month-long immersion corrosion test, which also showed that the 1K and 2K polysiloxane coatings had comparable degradation characteristic and remained highly hydrophobic. Note de contenu : - EXPERIMENTAL : Materials - Preparation of two-component polysiloxane coating - Preparation of single-component polysiloxane coating - Water diffusion coefficient measurements using FTIR-ATR - Immersion corrosion tests - Characterization of the pristine and corroded coated steel samples
- RESULTS AND DISCUSSION : Characterization of the pristine coatings - Immersion corrosion tests - Scribe testsDOI : 10.1007/s11998-017-9918-5 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-017-9918-5.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29625
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 14, N° 6 (11/2017) . - p. 1247-1258[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 19441 - Périodique Bibliothèque principale Documentaires Disponible Water resistance improvement of paperboard by coating formulations based on nanoscale pigments / Wasin Thitsartarn in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 6 (11/2020)
[article]
Titre : Water resistance improvement of paperboard by coating formulations based on nanoscale pigments Type de document : texte imprimé Auteurs : Wasin Thitsartarn, Auteur ; Tunyarut Jinkarn, Auteur Année de publication : 2020 Article en page(s) : p. 1609-1617 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation
Cartonnages -- Propriétés mécaniques
Emballages
Enrobage (technologie)
Formulation (Génie chimique)
Hydrophobie
Kaolin
Morphologie (matériaux)
Nanoparticules
Papier et carton couché
Pigments
Résistance à l'humidité:Résistance à l'eau
Rugosité
Surfaces (Physique)
Surfaces -- AnalyseIndex. décimale : 667.9 Revêtements et enduits Résumé : This research assessed how type, particle size, and concentration of pigment in coating formulations influenced water and water vapor barriers of paperboard packaging. Calcium carbonate (CaCO3) and kaolin of micro- and nanosize of 1 and 0.05 µm, respectively, were added to 3% (w/v) gelatinized cassava starch to prepare coating formulations with different pigment concentrations of 5, 15, and 25% (w/v). These were applied on paperboard surfaces using the rod coating technique. Results showed that water resistance of paperboard, evaluated by contact angle (CA) and water absorptiveness (Cobb) were strongly influenced by pigment type (chemistry), particle size and shape, and pigment concentration (coating layer thickness). A hydrophobic surface (CA > 100) was obtained only for the nano-CaCO3 formulation with 25% (w/v) by combined effects of the nanosize scale, the spherical shape, and the hydrophobic surface of CaCO3 particulates. Kaolin nanoparticle coatings produced hydrophilic surfaces (CA ~ 90) with high water absorptiveness, while high concentrations of kaolin microparticle coating slightly improved water and water vapor barriers by compact arrangement of flattened particles. Mechanical strength properties of the paperboard were not significantly affected by coatings, but surface cracking was observed for large particle size or at high pigment concentration due to the increase in pigment/starch ratio. Note de contenu : - MATERIALS AND METHODS : Materials - Coating formulation preparation - Coating process and conditioning - Physical properties and surface characterization - Water resistance and water vapor analysis - Mechanical property measurement
- RESULTS AND DISCUSSION : Coating weight and coating layer thickness - Surface roughness and morphology - Water resistance and water vapor barrier - Mechanical property analysisDOI : https://doi.org/10.1007/s11998-020-00386-5 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-020-00386-5.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34964
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Code-barres Cote Support Localisation Section Disponibilité 22458 - Périodique Bibliothèque principale Documentaires Disponible Waterborne corrosion-resistant hydrophobic alkyd resin composite coatings modified with fluorinated acrylate–siloxane and submicron-sheet zinc phosphate pigment / Shenjie Zhong in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 5 (09/2021)
[article]
Titre : Waterborne corrosion-resistant hydrophobic alkyd resin composite coatings modified with fluorinated acrylate–siloxane and submicron-sheet zinc phosphate pigment Type de document : texte imprimé Auteurs : Shenjie Zhong, Auteur ; Kang Qin, Auteur ; Yi Hou, Auteur ; Tianqi Xu, Auteur ; Ying Cai, Auteur ; Lingmin Yi, Auteur Année de publication : 2021 Article en page(s) : p. 1309-1320 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosifs
Anticorrosion
Hydrophobie
Phosphate de zinc
Pigments organiques
Polyalkydes
Revêtements en phase aqueuseIndex. décimale : 667.9 Revêtements et enduits Résumé : Waterborne polymeric coating for corrosion protection has been of particular interest both in academia and industrial circles for years because of its low cost and low-volatile organic compound (VOC) emissions. However, organic coating is permeable to water and oxygen resulting in the reduction of anticorrosion properties during coating application. In this study, waterborne corrosion-resistant hydrophobic-modified alkyd resin composite coatings using fluorinated acrylate–siloxane (FASAR) and submicron-sheet zinc phosphate (Zn3(PO4)2) pigment were prepared. The results of hydrophobicity, thermal, and mechanical measurements indicated that the FASAR30/5%Zn3(PO4)2 had excellent performance. More importantly, the EIS and potentiodynamic polarization tests revealed that the acquired films also exhibited high anticorrosion property for carbon steel. The corrosion current density (icorr) was 7.20 × 10−7 A cm−2, with an inhibition efficiency of 99.92%, and a corrosion rate of 8.37 × 10−3 mm per year. On the other hand, the impedance modulus (Zf = 0.01 Hz) of FASAR30/5%Zn3(PO4)2 still had 5.68 × 104 Ω cm2 after 14-day immersion in the 3.5 wt% NaCl solution. Note de contenu : - EXPERIMENTAL : Materials - Synthesis of FASAR via emulsions miniemulsion polymerization - Preparation of waterborne FASAR and FASAR/submicron-sheet Zn3(PO4)2 composite latex films - Coating process for carbon steel
- CHARACTERIZATIONS : Morphology and size distribution of emulsion - Chemical structure of hybrid composite films - Wettability of the composite latex films - Mechanical property tests and thermal stability of composite latex films - Anticorrosion tests of composite latex films
- RESULTS AND DISCUSSION : The morphology and sizes of FASAR emulsions - FTIR analysis - Dispersion of Zn3(PO4)2 in the composite latex films - Hydrophobicity of composite latex films - Mechanical and thermal properties of composite latex films - The corrosion properties of composite latex films
- Table 1 : Recipes and properties of the FASAR emulsions
- Table 2 : Contact angle values and surface energies of the thin films of composite latexes
- Table 3 : The mechanical properties of composite latex films
- Table 4 : TGA data of the composite latex films
- Table 5 : Electrochemical parameters obtained from PDP studies for FASAR0, FASAR30 and FASAR30/submicron-sheet Zn3(PO4)2 coated CS in 3.5 wt% NaCl at room temperature
- Table 6 : Electrochemical impedance spectroscopy data for uncoated FASAR0, FASAR30 and FASAR30/submicron-sheet Zn3(PO4)2-coated CS in 3.5 wt% NaCl at room temperatureDOI : https://doi.org/10.1007/s11998-021-00493-y En ligne : https://link.springer.com/content/pdf/10.1007/s11998-021-00493-x.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36434
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 5 (09/2021) . - p. 1309-1320[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22991 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Waterproof walls : Improved water management and better barriers for exterior wall and metal coatings Type de document : texte imprimé Auteurs : Daniel von Laufenberg, Auteur Année de publication : 2015 Article en page(s) : p. 138-142 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anticorrosifs
Anticorrosion
Applications extérieures
CalcinationLa calcination est une technique de préparation d'échantillon utilisée en chimie analytique qui permet de prendre en compte ce phénomène. Elle consiste à chauffer l'échantillon à haute température (typiquement 500 à 1 000 °C) sous air ou sous atmosphère neutre pour provoquer des réactions physiques et chimiques et mettre ainsi l'échantillon dans un état de référence.
En effet, un certain nombre de propriétés des matériaux dépendent de la température et de l'historique de l'échantillon comme de l'humidité. La calcination permet de l'abstraire de ces effets et donc d'avoir des mesures reproductibles, de pouvoir comparer différents échantillons. En revanche, il faut être conscient que l'échantillon analysé n'est pas l'échantillon prélevé. La méthode est similaire à l'analyse des extraits secs mais utilise une température plus élevée.
Charges (matériaux)
Hydrophobie
Kaolin
Revêtement métallique
Revêtements:PeintureIndex. décimale : 667.9 Revêtements et enduits Résumé : Producers of building and corrosion protection coatings are faced with the challenge of developing and producing paint and coatings which are designed for more efficient control and better management of water on building materials and other substrates. Hydrophobically modified calcinated kaolins are looking increasingly attractive as innovative fillers for such applications Note de contenu : - Adressing the issue
- Kaolin and calcinated kaolin - what are they ?
- How are kaolins modified ?
- Water management on building exteriors
- Water management for corrosion protection coatings
- Better water management and barriers for stopping corrosionEn ligne : https://drive.google.com/file/d/1mrmc2xf77m3Ozc1tK2WkT8Y5j_6TolST/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=23750
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Code-barres Cote Support Localisation Section Disponibilité 17141 - Périodique Bibliothèque principale Documentaires Disponible Wax additives - true multi-talents / Michael Bilger in EUROPEAN COATINGS JOURNAL (ECJ), N° 7-8 (07-08/2022)
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Titre : Wax additives - true multi-talents Type de document : texte imprimé Auteurs : Michael Bilger, Auteur ; Tina Leyh, Auteur ; Sebastian Schütz, Auteur Année de publication : 2022 Article en page(s) : p. 22-27 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Angle de contact
Biomatériaux
Biopolymères
Cires
Cires -- Composition
Cires végétales
Etudes comparatives
Fragmentation
Hydrophobie
Polyalkydes
Résistance à l'abrasion
Revêtements -- Propriétés mécaniques
Revêtements en phase aqueuse
Revêtements en phase aqueuse -- Additifs
Revêtements organiques
Stabilité au stockageIndex. décimale : 667.9 Revêtements et enduits Résumé : The coatings sector has a limited range of renewable and sustainable raw mate-rials to choose from. To meet consumer expectations and legal requirements, alternatives are needed that ensure sustainable use of resources. Today's sustainable alternatives often lag their synthetic counterparts in performance or price, but rapid progress is being made in the development of suitable substitutes. In the area of wax additives, sustainable solutions are available. Here, we compare their property profiles with those of fossil products Note de contenu : - What is wax ?
- Calling time on microplastics ?
- Restrictions on PFOA and PFCA, too
- Polysaccharide-based biopolymers and novel vegetable waxes
- Bio-based is not necessarily biodegradable
- Experimental
- Micronised waxes in a water-borne
- Abrasion resistance : natural wax/biopolymer blend is best
- Mechanical properties in water-borne alkyd systems
- Improved sandability
- Biogenics easier to incorporae
- Superior abrasion resistance
- Hydrophobicity : paraffin vs biobased parrafin alternative
- Fig. 1 : Overview of modern waxes and their chemical composition
- Table 1 : Properties of tested wax additives
- Table 2 : Contact angle and storage stability of bio-based dispersion and paraffin dispersionEn ligne : https://drive.google.com/file/d/11lrXfIymamqN80Biu8S5yoskZeZ3eQLV/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38021
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Code-barres Cote Support Localisation Section Disponibilité 23593 - Périodique Bibliothèque principale Documentaires Disponible Wettability control between superoleophobic and superoleophilic characteristics on the modified superhydrophobic surfaces treated with fluoroalkyl end-capped vinyltrimethoxysilane oligomeric silica/poly(styrene-co-butadiene) nanocomposites: application to the separation of oil and water / Arissara Ratcha in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 1 (01/2018)
PermalinkWetting metamorphosis of hydrophobic fluoropolymer coatings submerged in water and ultrasonically vibrated / Matthew Trapuzzano in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 3 (05-06/2020)
PermalinkWider stain washability, water-whitening resistance / Patricia Beurdeley in EUROPEAN COATINGS JOURNAL (ECJ), N° 2 (02/2019)
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