Accueil
Détail de l'auteur
Auteur Patrice Roose |
Documents disponibles écrits par cet auteur
Ajouter le résultat dans votre panier Affiner la recherche
GRP composite manufacturing optimization / David Beke in JEC COMPOSITES MAGAZINE, N° 119 (03/2018)
[article]
Titre : GRP composite manufacturing optimization : opportunities with UV curing Type de document : texte imprimé Auteurs : David Beke, Auteur ; Luc Boogaerts, Auteur ; Patrice Roose, Auteur ; Jon Shaw, Auteur Année de publication : 2018 Article en page(s) : p. 44-46 Langues : Anglais (eng) Catégories : Analyse mécanique dynamique
Composites à fibres de verre
Enroulement filamentaire
Flexion (mécanique)
Matériaux -- Imprégnation
Polymérisation
Pultrusion
Rayonnement ultraviolet
Rhéologie
Transition vitreuse
ViscositéIndex. décimale : 668.4 Plastiques, vinyles Résumé : Composite manufacturers are facing increasing pressure to improve operational efficiency, identify saving opportunities and reduce their ecological footprint, without compromising material performance. The implementation of an ultraviolet (UV) curing manufacturing process is proving to be an effective step towards these goals. Before considering such process improvements, maanufacturers and OEMs should be aware of the benefits and boundaries of the current state of the art in UV curing technology. Note de contenu : - BENEFITS AND BOUNDARIES : WHEN TO CONSIDER USING UV TECHNOLOGY ? : Prepregs : stable storage and fast, controlled curing - Pultrusion : increased line speed, reduced energy consumption and cleaning labour - Filament winding : reduced cycle time, energy cost and number of mandrels in use - In-field repair : fast return to service and high process control - New opportunities
- MATERIAL PROPERTIES
- Table : Viscosity, glass transition temperature (T(tanδmax) determined with dynamic mechanical analysis) and flexural properties of three typical UV-cured systems
- Fig. 1 : Possible implementation scheme of a filament winding process with UV curing
- Fig. 2 : Flexural modulus versus temperature of non-reinforced UV-cured resins and a typical glass fibre-reinforced (fibre content : 83wt %) UV-cured composite relative to monolithic glass. The set of UV-cured resins ranks from grey to black according to an increasing level of crosslinking density from medium to highPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30378
in JEC COMPOSITES MAGAZINE > N° 119 (03/2018) . - p. 44-46[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 19663 - Périodique Bibliothèque principale Documentaires Disponible Phase separation in Michael addition curable coatings to enhance flexibility and adhesion robustness / Bart A. J. Noordover in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 6 (11/2023)
[article]
Titre : Phase separation in Michael addition curable coatings to enhance flexibility and adhesion robustness Type de document : texte imprimé Auteurs : Bart A. J. Noordover, Auteur ; Yujing Zhang, Auteur ; Richard Brinkhuis, Auteur ; Martin Bosma, Auteur ; Florian Lunzer, Auteur ; Patrice Roose, Auteur ; Luc Lindekens, Auteur Année de publication : 2023 Article en page(s) : p. 1835-1844 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésion
Analyse thermomécanique dynamique
Caractérisation
Formulation (Génie chimique)
Michael, Addition deL'addition de Michael ou réaction de Michael est une réaction qui permet la création de liaisons carbone-carbone, voire de liaisons carbone-soufre. Il s'agit de l'addition nucléophile d'un carbanion sur un composé carbonylé α,β insaturé (aldéhyde, cétone et même ester α,β insaturé, des nitriles et des amides α,β insaturés pouvant aussi être utilisés). Elle appartient à la famille des additions nucléophiles conjuguées.
Cette réaction doit son nom au chimiste américain Arthur Michael.
Polyester maloné
Réticulation (polymérisation)
Revêtements organiques
Séparation de phases
Souplesse (mécanique)
Vernis -- Propriétés mécaniquesIndex. décimale : 667.7 Cires, laques, vernis Résumé : Polyether-based acryloyl-functional acceptor binders were combined with malonated polyester donor resins in base-catalyzed carbon-Michael addition curable paint systems. The high equivalent weight, flexible polyether-based acceptors afford a multi-phase morphology in the final coating film, which is formed through polymerization-induced incompatibility and phase separation. Additional thermal transitions were observed in dynamic mechanical thermal analysis experiments, indicating the presence of low Tg domains in the highly crosslinked continuous phase. As a consequence, these novel network compositions show strongly improved ductility and adhesion robustness over a range of substrate types. Non-reactive polyether-based binders, lacking covalent bonding to the crosslinked continuous phase, only lead to limited, less robust property improvement. It was demonstrated that acceptor binders based on poly(propylene glycol) segments are highly effective in enhancing flexibility while maintaining a high coating hardness. Both clearcoat and pigmented topcoat formulations were developed showing similar performance improvements, opening the door to benefits in a variety of application fields. Note de contenu : - Experimental section : Materials
- Preparation of malonated polyester MPE1
- RMA coating formulation and application
- Characterization methods
- Results and discussion : Polymerization-induced phase separation using acryloyl-functional polyethers - Mechanical and adhesion properties of multi-phase RMA curable compositions - RMA reactive vs non-reactive polyether segments - Reactive polyether-containing pigmented RMA curable compositions
- Table 1 : Michael addition curable clearcoat formulation containing PPG2k UA
- Table 2 : Polyether-based UAs studied in RMA coatings
- Table 3 : Testing results of multi-phase RMA curable compositions
- Table 4 : Testing results of multi-phase RMA curable compositions
- Table 5 : Adhesion testing results on different types of substrates for pigmented Michael addition curable compositions based on MPE and DiTMPTA + acceptor resin 2 (% on total resin solids), using a carbonate-blocked strong base as catalystDOI : https://doi.org/10.1007/s11998-023-00804-4 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-023-00804-4.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40164
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 6 (11/2023) . - p. 1835-1844[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 24337 - Périodique Bibliothèque principale Documentaires Disponible Reflections on radiation curing / Michel Tielemans in EUROPEAN COATINGS JOURNAL (ECJ), N° 6 (06/2015)
[article]
Titre : Reflections on radiation curing : Novel waterbased UV-PUD for robust single-coat mirror effect Type de document : texte imprimé Auteurs : Michel Tielemans, Auteur ; Claire-Sophie Bernet, Auteur ; Patrice Roose, Auteur Année de publication : 2015 Article en page(s) : p. 30-33 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Brillance (optique)
Polyuréthanes
Revêtements -- Finition:Peinture -- Finition
Revêtements en phase aqueuse -- Séchage sous rayonnement ultraviolet:Peinture en phase aqueuse -- Séchage sous rayonnement ultraviolet
Revêtements en phase aqueuse:Peinture en phase aqueuseIndex. décimale : 667.9 Revêtements et enduits Résumé : Waterbased energy curable polymers can create high performance coatings with good productivity. A new viscosity and regulatory compliant tin-free waterborne resin provides mirror-like coatings with good hiding power and resistance to application defects from a single-coat spray application. Note de contenu : - Uncured oligomer flow creates various problems
- Creep viscosity measurement procedure
- Key optical measurements summarised
- A new product for high gloss mirror like finishes
- The benefits of controlled oligomer flow
- New product displays excellent gloss parameters
- Good chemical and physical resistance properties
- Enhanced appearance with only a single coatEn ligne : https://drive.google.com/file/d/1PaApGunblKdHSYbnsbGlvaaHwwr9iUau/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24262
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 6 (06/2015) . - p. 30-33[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 17279 - Périodique Bibliothèque principale Documentaires Disponible Water-based energy curable polyurethane dispersion / Michel Tielemans in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 205, N° 4614 (11/2015)
[article]
Titre : Water-based energy curable polyurethane dispersion Type de document : texte imprimé Auteurs : Michel Tielemans, Auteur ; Claire-Sophie Bernet, Auteur ; Patrice Roose, Auteur Année de publication : 2015 Article en page(s) : p. 15-19 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Bois -- Revêtements
Brillance (optique)
Dépôt par pulvérisation
Fluage
Haut extrait sec
Mesures optiques
Polyuréthanes
Résistance à l'abrasion
Revêtements en phase aqueuse:Peinture en phase aqueuseIndex. décimale : 667.9 Revêtements et enduits Résumé : Low viscosity and regulatory compliant (tin-free) prototype offers a robust single-coat spray usage for wood coating applications and ensures the formation of mirror-like coatings with a good hiding power.
A new high-solids and solvent-free radiation curable polyurethane dispersion has been developed for high gloss applications with excellent DOI. The product has an excellent colloïdal stability (shelf life of 12 months) and complies with VOC-free, tin-free and stenomer-free requirennents. Due to its low viscosity and its good responsiveness to rheology modifiers, it can be easily applied by spray, roller or curtain coating operation. Its value-in-use was optimised by significantly reducing polymer flow after drying and before radiation curing. The product can be advantageously applied in one single coat and enables one to get rid of sanding step required in between topcoat layers with former products applied in two layers. The cured coating exhibits good chemical and scratch resistance required for high-end wooden furniture top coats — although it can aise be used for other substrates and applications.Note de contenu : - The creep measurement
- The optical measurements
- High gloss mirror-like coating application
- Coating application with oligomer flow
- High-gloss mirror-like coating application with superior performanceEn ligne : https://drive.google.com/file/d/1L5Wz4nP_743GgO0X-whyXaSRgBbGMODC/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=24916
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 205, N° 4614 (11/2015) . - p. 15-19[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 17599 - Périodique Bibliothèque principale Documentaires Disponible