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Investigating the effect of temporal variation on fouling settlement using a rapid assay method / Chin-Sing Lim in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 3 (05/2019)
[article]
Titre : Investigating the effect of temporal variation on fouling settlement using a rapid assay method Type de document : texte imprimé Auteurs : Chin-Sing Lim, Auteur ; Mei Lin Neo, Auteur ; Siti Zarina Zainul Rahim, Auteur ; Rute da Conceicao Tavares Andre, Auteur ; Serena Lay Ming Teo, Auteur Année de publication : 2019 Article en page(s) : p. 761-769 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Analyse des données
Essais (technologie)
Evaluation
Revêtements antisalissures:Peinture antisalissures
Salissures biologiques
Salissures marines
Test d'immersionTags : 'Revêtements antifouling' 'Règlement d'encrassement' 'Variation temporelle' 'Évaluation sur le terrain' Index. décimale : 667.9 Revêtements et enduits Résumé : Biological fouling in the tropical marine environment is ubiquitous and occurs all year round. However, the fouling composition and settlement rates may differ, particularly due to hydrological factors. This may present many challenges in evaluating field performance of antifouling coatings. For short duration field testing, i.e., rapid field assessment, it may be difficult to reconcile differences in field activity for novel antifouling assays carried out at different immersion periods in a year, especially when there is little knowledge of temporal variation in fouling settlement. To understand how fouling settlement may vary over different periods, this study used a rapid field assessment method to examine fouling settlement on four types of control coatings at five different immersion periods over a year. Results suggested that antifouling assessment of coatings, using short duration assays (2–4 weeks), can be carried out all year round without being confounded by temporal variation. This study demonstrates, for practitioners, the significance of gaining insights on the effect of temporal variation in fouling settlement within a tropical marine environment in Singapore. Note de contenu : - MATERIALS AND METHODS : Static field immersionof control coatings and assessment - Data analyses
- RESULTS : Coating performances after 2 weeks of immersion - Coating performances after 4 weeks of immersion - Temporal variation (immersion periods) of fouling communities across coatings - Temporal variation (immersion duration) of fouling communities across coatings - Diversity indices of fouling communities across coatings and immersion periodsDOI : 10.1007/s11998-018-00153-7 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-018-00153-7.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32588
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 16, N° 3 (05/2019) . - p. 761-769[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20953 - Périodique Bibliothèque principale Documentaires Disponible Investigating the long-term effects of immersion in salt solutions on the protective properties of bio-content polyurethane coatings / Douglas J. Mills in SURFACE COATINGS INTERNATIONAL, Vol. 103.4 (07-08/2020)
[article]
Titre : Investigating the long-term effects of immersion in salt solutions on the protective properties of bio-content polyurethane coatings Type de document : texte imprimé Auteurs : Douglas J. Mills, Auteur ; Tomasz Wityk, Auteur ; Piszczyk Lukasz, Auteur Année de publication : 2020 Article en page(s) : p. 188-192 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse mécanique dynamique
Anticorrosifs
Anticorrosion
Biomasse
Electrochimie
Evaluation
Métaux -- Revêtements protecteurs
Polyuréthanes
PrépolymèresUn pré-polymère ou prépolymère est un oligomère ou un polymère présentant des groupes réactifs qui lui permettent de participer à une polymérisation ultérieure et d’incorporer ainsi plusieurs unités monomères dans au moins une chaîne de la macromolécule finale.
Les pré-polymères peuvent être di-fonctionnels (c'est le cas des pré-polymères téléchéliques) ou plurifonctionnels. Dans ce dernier cas, ils sont utilisés pour la fabrication de polymères thermodurcissables par réticulation.
Revêtements organiques
Solutions (chimie)
Transition vitreuseIndex. décimale : 667.9 Revêtements et enduits Résumé : One of the ways to protect metals against corrosion is to coat them with polymers that act as a predominantly ionic barrier and/or contain corrosion inhibitors. As a consequence, the corrosion redox reactions are hindered and corrosion is reduced to a negligible (passivation current) rate. However, polymers undergo various processes of degradation in the harsh environments where some coatings are used. Therefore, for long-term protection it is important to know the different degradation mechanisms of the polymer. A popular type of anti-corrosive organic coating is based on polyurethane. The degradation of these coatings with a biomass component has been investigated in this work. The resins were synthesised using 'single-step' and 'prepolymer' methods. Castor oil was added to the systems thereby contributing to the lowering the amount of fossil fuel-based chemical compounds in the final product. The samples were subjected to immersion in 3% sodium chloride solution for about three months. The values of DC resistance, which is a measure of barrier effectiveness, decreased with time. Dynamic Mechanical Analysis results showed that increasing the castor oil content of the polyurethane coatings resulted in higher glass transition temperatures and higher crosslink densities. Note de contenu : - Coating materials an dpreparation
- 'Single-step' method
- 'Prepolymer' method
- Evaluation of corrosion protection
- DC resistance measurement
- Dynamic mechanical analysis (DMA)
- Table 1 : Composition of polyurethane coatings prepared by 'single-step' method
- Table 2 : Composition of polyurethane coatings prepared by 'prepolymer' method
- Table 3 : Bacon, Rugg and Smith scale relating to the protection against corrosion on the basis of the DC resistance value
- Table 4 : Glass transition temperatures of PU coatings
- Fig. 1 : Schematic of electrochemical measurement system of attached coatings
- Fig. 2 : DC resistance as a function of time for polyurethane coatings on steel as prepared by 'prepolymer' method when immersed in 3% NaCl solution over 104 days
- Fig. 3 : DC resistance as a function of time for polyurethane coatings on steel as prepared by the 'single-step' method when immersed in 3% sodium chloride solution over 104 days
- Fig. 4 : Storage modulus of the obtained PU coatings against temperature
- Fig. 5 : Loss modulus ratio tan δ of the obtained PU coating against temperatureEn ligne : https://drive.google.com/file/d/1-wFxMux1EWjuVW71jh9HIREeipTTDcMa/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34428
in SURFACE COATINGS INTERNATIONAL > Vol. 103.4 (07-08/2020) . - p. 188-192[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21903 - Périodique Bibliothèque principale Documentaires Disponible Investigation of the synthesis of a novel glycidyl ether-amine epoxy tanning agents and their tanning performance / Xiaoyan Pang in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIV, N° 6 (06/2019)
[article]
Titre : Investigation of the synthesis of a novel glycidyl ether-amine epoxy tanning agents and their tanning performance Type de document : texte imprimé Auteurs : Xiaoyan Pang, Auteur ; Zhiwen Ding, Auteur ; Wei Ding, Auteur ; Xiao Xiao, Auteur ; Xuepin Liao, Auteur ; Bi Shi, Auteur Année de publication : 2019 Article en page(s) : p. 228-239 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Agents de tannage
Caractérisation
Composés organiques -- Synthèse
Epoxydes
Evaluation
Poids moléculaires
Rhéologie
Structure chimique
TannageIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Isophorone diamine (IPDA) and epichlorohydrin (ECH) were used to fabricate the epoxy tanning agents, and polyalcohol compounds (glycerol, polyethylene glycol, ethylene glycol) were employed to introduce the ether bonds into the epoxy tanning agents to improve their compatibility with water. The prepared epoxy tanning agents were named IGE, IPE and IEE for the introduction of glycerol, polyethylene glycol and ethylene glycol, respectively. FT-IR and 1H NMR analysis indicated that epoxy groups, ether bonds and hexatomic rings were successfully introduced into IGE, IPE and IEE. The tanning performances of the epoxy tanning agents were further evaluated in water, ethanol-50 (50% of ethanol in water) and ethanol-95 (95% of ethanol in water) medium, which suggested that ethanol-50 was the most favorable one for the epoxy tanning agents. The IGE tanned leather exhibited the highest shrinkage temperature of 83ºC in ethanol-50 due to its low viscosity, high epoxy value and wide molecular dispersion. Morphology observation indicated that the IGE tanned leather exhibited better dispersion of fiber network than that of IPE and IEE tanned leathers. These results illustrated that IGE was an appropriate tanning agent in water-ethanol medium, which could be considered as a candidate for the organic tanning agents. Note de contenu : - EXPERIMENTAL : Materials - Synthesis of epoxide tanning agents - Characterization of epoxide tanning agents Fourier Transform Infrared (FT-IR) spectriscopy - Molecular weight determination - H NMR analysis - Determination of viscosity - Tanning trials - Evaluation of tanning performance shrinkage temperature - Absorption rate of tanning agent - Physical properties - Scanning Electron Microscope (SEM) observation
- RESULTS AND DISCUSSION : Chemical structure analysis - Molecular weight and viscosity of as prepared epoxides - Evaluation of the tanning performance of prepared epoxides - Optimization of IGE tanning conditions - Morphology observation of tanned leather - Physical propertiesEn ligne : https://drive.google.com/file/d/1ChD8Sr0kJz6k2u-XCTG2lhvZxRPOOdZC/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32655
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIV, N° 6 (06/2019) . - p. 228-239[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20992 - Périodique Bibliothèque principale Documentaires Disponible ISO 10993, Part 18 : A structured approach to material characterisation / David Ingles in MEDICAL DEVICE TECHNOLOGY, Vol. 14 , N° 5 (06/2003)
[article]
Titre : ISO 10993, Part 18 : A structured approach to material characterisation Type de document : texte imprimé Auteurs : David Ingles, Auteur Année de publication : 2003 Article en page(s) : p. 18-19 Langues : Anglais (eng) Catégories : Caractérisation
Certification
Evaluation
Matériaux
Matériel médical -- AnalyseIndex. décimale : 543.08 Chimie analytique - Méthodes particulières Résumé : Companies need to prepare now for the introduction of ISO 10993 Part 18, Chemical characterisation of materials, which is being published in late 2003. This part of the standard requires companies to increase the quality and quantity of the chemical characterisation of the materials used in medical devices. Note de contenu : - Detailed chemical assessment
- What information do I need ?
- What can I use the information for ?
- From where do I obtain the information ?
- Types of characterisation tests : Infrared analysis - Physicochemical tests - Trace metal analysis - Thermal tests - Additional testsPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20893
in MEDICAL DEVICE TECHNOLOGY > Vol. 14 , N° 5 (06/2003) . - p. 18-19[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 007554 - Périodique Bibliothèque principale Documentaires Disponible Jointly conducted analysis and structural test evaluation for automotive B-pillar parts / Daeryeong Bae in JEC COMPOSITES MAGAZINE, N° 142 (09-10/2021)
[article]
Titre : Jointly conducted analysis and structural test evaluation for automotive B-pillar parts Type de document : texte imprimé Auteurs : Daeryeong Bae, Auteur ; Shangho Mun, Auteur ; Hyun-young Lee, Auteur ; Joonhyeok Choi, Auteur Année de publication : 2021 Langues : Anglais (eng) Catégories : Composites à fibres -- Moulage par compression
Composites à fibres de carbone
Essais (technologie)
Evaluation
Fibres à orientation unidirectionnelle
Matériaux -- Imprégnation
Matières plastiques dans les automobiles
Simulation par ordinateurIndex. décimale : 668.4 Plastiques, vinyles Résumé : The main goal of this task is to develop automotive B-pillar parts reinforced with carbon fibre reinforced plastic (CFRP) by establishing CAE analysis techniques through correlation between prepreg compression moulding/structural performance (static load) simulation and actual experimental results. Note de contenu : - Lightweight B-pillar design
- B-pillar CFRP reinforcement part manufacturing process
- Validation of formed part
- Structural analysis considering fibre orientation
- B-pillar static test for single component
- Fig. 1 : Overall workflow and participants for forming-structural coupled simulation
- Fig. 2 : Overall structure of automotive B-pillar and comparison of conventional metal B-pillar and lightweight aluminium B-pillar with CFRP reinforcement
- Fig. 3 : Thermosetting epoxy carbon fibres UD prepreg compression moulding process procedure
- Fig. 4 : a) The modelled forming process configuration (optimised blank shape and positioning of tools in AniForm) and b) Comparison of the composite forming prediction with the experimental result of the formed B-pillar part
- Fig. 5 : FE-model of B-pillar reinforcement with fibre orientations for structural analysis
- Fig. 6 : Boundary and loading conditions for top and bototm side of B-pillarPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37173
in JEC COMPOSITES MAGAZINE > N° 142 (09-10/2021)[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22953 - Périodique Bibliothèque principale Documentaires Disponible Keratosis pilaris quantified by two test methods / Emmanuel Doridot in PERSONAL CARE EUROPE, Vol. 14, N° 2 (04/2020)
PermalinkLCA of selected biopolymers / Olga Ballùs in INTERNATIONAL LEATHER MAKER (ILM), N° 56 (11-12/2022)
PermalinkLibérer la créativité cosmétique / Aurélien Tahon in EXPRESSION COSMETIQUE, N° Hors-série (2023)
PermalinkLife-cycle assessment of architectural coatings / Tim Wieroniey in COATINGS TECH, Vol. 15, N° 8 (08/2018)
PermalinkLiposomes, nanoémulsions de phosphatidylcholine / J. Gareiß in PARFUMS COSMETIQUES ACTUALITES, N° 131 (11/1996)
PermalinkLiquides clairs - Evaluation de la couleur au moyen de l'échelle Gardner - Partie 2 : Méthode spectrophotométrique - Norme ISO 4630-2 / International Organization for Standardization (Genève, Suisse) / Geneve [Switzerland] : International Organization for Standardization (ISO) (2004)
PermalinkLocational differences in the physical properties of sole leather / P. L. Muthiah in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 60 (Année 1976)
PermalinkLocational differences in the physical properties of sole leather / P. L. Muthiah in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 60, N° 3 (05-06/1976)
PermalinkLocational differences in the physical properties of upper leather / P. L. Muthiah in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 60 (Année 1976)
PermalinkLow-cost fabrication and physicochemical characterization of ZnFe2O4 nanoparticles as an efficient multifunctional inorganic pigment / Mostafa A. Sayed in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 6 (11/2023)
PermalinkLow-emissivity topcoats for the reduction of thermal infrared emissions from military platforms / Kelly Lance C. in COATINGS TECH, Vol. 17, N° 4 (04/2020)
PermalinkLow salt preservation of australian sheepskins / C. P. Martin in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 105, N° 1 (01-02/2021)
PermalinkLow VOC topcoats using ultra high solids resins / Gautam Haldankar in COATINGS TECH, Vol. 18, N° 9 (09/2021)
PermalinkLuminescence increased by plant-derived lipophilic active / Alain Thibodeau in PERSONAL CARE EUROPE, Vol. 6, N° 3 (06/2013)
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