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Green wood protection / Dirk Mestach in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 194, N° 4477 (06/2004)
[article]
Titre : Green wood protection Type de document : texte imprimé Auteurs : Dirk Mestach, Auteur ; Derrick Tweene, Auteur Année de publication : 2004 Article en page(s) : p. 18-21 Langues : Anglais (eng) Catégories : Analyse thermomécanique dynamique
Bois -- Revêtements protecteurs
Chromatographie sur gel
Formulation (Génie chimique)
Polyacryliques
Polyaddition
Résistance à l'humidité:Résistance à l'eau
Résistance chimique
Stabilisants (chimie)
Surfactants
Vernis en phase aqueuseIndex. décimale : 667.9 Revêtements et enduits Résumé : The authors explain which acrylic dispersions with polymer bound coatings are suitable for wood finishes.
Emulsion free-radical polymerisation has proven to be an environmentally friendly method for the production of a wide range of polymeric dispersions. In the emulsion polymerisation process, monomer is polymerised in an aqueous medium containing surfactant micelles. Surfactant plays a dual role in the process; it not only provides the locus of polymerisation but also stabilises the polymer particles.
Recent changes in the regulations concerning the emission of organic solvents in the European Community have led to a growing interest in the use of polymer dispersions in high performance waterborne coating systems.
One-pack systems, using the current state-of-the-art technology of combining carbonyl-hydrazide crosslinking with control of the morphology of the particles in the polymeric dispersion, have been studied extensively.
These acrylic dispersions are synthesised using conventional surfactants as an integral part of recipe. Even though some grafting might occur during the polymerisation, the surfactants are predominantly adsorbed onto the surface of the polymer particles.
The presence of surfactant has an influence on the final properties of the paint film. During film-formation coalescence is caused by self-diffusion and results in polymer inter-penetration. This process requires the disappearance of surfactant from the surface of the polymer particles.
Because most surfactants are not fully compatible with the polymer matrix, surfactant will have the tendency to migrate to the film-air interface. Therefore, the surface structure of a film cast from a dispersion will be different from its internal structure.
Because of the non-volatile nature of the surfactent, a permanent reduction of surface hardness is observed. In coatings this effect can lead to bad blocking resistance, inferior sanding properties and dirt pickup. In some cases the surfactant is completely exuded from the film.
As a result resin chemists have been actively pursuing alternatives for conventional low molecular weight surfactants.Note de contenu : - Surface active monomers
- Polymeric stabilisers
- Paint evaluation
- FIGURES : 1. Water whitening after soaking at 50°C for three hours. Left : dispersion with APEO surfactant, middle : dispersion with APEO-free surfactan, right : dispersion with anionic surfmer - 2. Carbonyl functional polymeric stabiliser - 2. Graft emulsion polymerisation process using a polymeric surfactant - 4. Clarity of clear-coat based on an acrylic dispersion made with a polymeric surfactant and a conventional surfactant - 5. Gel permeation chromatogram of the polymeric stabiliser (A) and the polymer dispersion (B). In B (1) is the second stage and (2) is the non-grafted polymeric stabiliser - DMTA of clear-coat based on polymer stabilised acrylic dispersion
- TABLES : 1. Typical properties of a polymer stabilised dispersion - 2. Formulation is made with polymers stabilised acrylic dispersion - 3. Hardness development - 4. Early water resistance - 5. Chemical resistance according to DIN NORM 68 861 1BPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27728
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 194, N° 4477 (06/2004) . - p. 18-21[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 000300 - Périodique Bibliothèque principale Documentaires Disponible Handbook of vinyl polymers / Munmaya K. Mishra / Boca Raton [Etats-Unis] : CRC Press - Taylor Francis Group (2009)
Titre : Handbook of vinyl polymers : Radical polymerization process, and technology Type de document : texte imprimé Auteurs : Munmaya K. Mishra, Editeur scientifique ; Yusuf Yagci, Editeur scientifique Mention d'édition : 2e édition Editeur : Boca Raton [Etats-Unis] : CRC Press - Taylor Francis Group Année de publication : 2009 Collection : Plastics engineering series num. 73 Importance : 763 p. Présentation : ill. Format : 25 cm ISBN/ISSN/EAN : 978-0-8247-2595-2 Prix : 178 E Note générale : Index - Bibliogr. Langues : Américain (ame) Catégories : Polyaddition
polymères vinyliquesIndex. décimale : 668.9 Polymères Note de contenu : I. THE FUNDAMENTALS OF RADICAL VINYL POLYMERIZATION : 1. The fundamentals - 2. Chemistry and kinetic model of radical polymerization - 3. Special characteristics of radical vinyl polymerization
II. THE INITIATING SYSTEMS : 4. Initiation of vinyl polymerization by organic molecles and non metal initiators - 5. Chemical initiation by metals or metal-containing compounds - 6. Suspension polymerization redox initiators - 7. Vinyl polymerization initiated by high-energy radiation - 8. Photoinitiated radical vinyl polymerization - 9. Functionalisation of polymers - 10. Controlled/living radical polymerization - 11. Block and graft copolymers
III. TECHNICAL PROCESSES OF VINYL POLYMERIZATION : 12. Continuous processes for radical vinyl polymerization - 13. Technical processes for industrial production
IV. VINYL POLYMER TECHNOLOGY : 14. Vinyl polymer degradation - 15. Fiber-filled vinyl polymer composites - 16. Particulate-filled vinyl polymer composites - 17. Vinyl polymer applications and special uses - 18. Recycling of vinyl polymers - 19. Processing of vinyl polymers - 20. Characterization of interfaces in composites using micro-mechanical techniques
V. PARAMETERS : 21. Data and structuresPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8281 Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 2793 668.9 MIS Monographie Bibliothèque principale Documentaires Exclu du prêt How to control aggression / Juergen Schneider in ADHESIVE TECHNOLOGY, Vol. 17, N° 4 (09/2000)
[article]
Titre : How to control aggression Type de document : texte imprimé Auteurs : Juergen Schneider, Auteur Année de publication : 2000 Article en page(s) : p. 13-14 Langues : Anglais (eng) Catégories : Adhésifs -- Séchage sous rayonnement ultraviolet
Adhésifs sensibles à la pression
Caoutchouc styrène-butadiène
Copolymères séquencés
Formulation (Génie chimique)
Polyaddition
TackIndex. décimale : 668.3 Adhésifs et produits semblables Résumé : UV-cured Kraton D-KX222 polymer-based pressure sensitive adhesives were recently found to be effective in applications requiring high levels of aggressive tack.
Note de contenu : - Investigating tack
- Formulations
- Decrease in agressive tack
- Table 1 : Adhesive formulations investigated
- Table 2 : Properties of the cured adhesives
- Table 3 : Adhesive properties achievedPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37348
in ADHESIVE TECHNOLOGY > Vol. 17, N° 4 (09/2000) . - p. 13-14[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 001989 - Périodique Bibliothèque principale Documentaires Disponible Improvement effects of CaO nanoparticles on tribological and microhardness properties of PMMA coating / L. D. Aguilera-Camacho in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 12, N° 2 (03/2015)
[article]
Titre : Improvement effects of CaO nanoparticles on tribological and microhardness properties of PMMA coating Type de document : texte imprimé Auteurs : L. D. Aguilera-Camacho, Auteur ; C. Hernà ndez-Navarro, Auteur ; K. J. Moreno, Auteur ; J. S. Garcia-Miranda, Auteur ; A. Arizmendi-Morquecho, Auteur Année de publication : 2015 Article en page(s) : p. 347-355 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Chaux
Dureté (matériaux)
Nanoparticules
Polyaddition
Polyméthacrylate de méthyleLe poly(méthacrylate de méthyle) (souvent abrégé en PMMA, de l'anglais Poly(methyl methacrylate)) est un polymère thermoplastique transparent obtenu par polyaddition dont le monomère est le méthacrylate de méthyle (MMA). Ce polymère est plus connu sous son premier nom commercial de Plexiglas (nom déposé), même si le leader global du PMMA est Altuglas International9 du groupe Arkema, sous le nom commercial Altuglas. Il est également vendu sous les noms commerciaux Lucite, Crystalite, Perspex ou Nudec.
Revêtements organiques
Tribologie (technologie)Index. décimale : 667.9 Revêtements et enduits Résumé : Poly(methyl methacrylate)/calcium oxide (PMMA/CaO) nanocomposite in the form of solution has been successfully prepared by mixing CaO nanoparticles and PMMA obtained by a free radical polymerization. For comparative studies, pure PMMA coating was also prepared to determine the influence of CaO nanoparticles incorporation into PMMA matrix on the properties behavior. Fourier transform infrared technique was used to study the synthesis of PMMA and PMMA/CaO nanocomposite. The coating thickness was determined by profilometry ; it was increased from 97 to 107 µm, when CaO nanoparticles were added. The surface morphology of the coatings was characterized by scanning electron microscopy. The wear tests for PMMA/CaO and PMMA coatings on ultra-high molecular weight polyethylene substrates were carried out on a pin-on-disk tribometer in dry conditions with normal loads ranging from 2 to 10 N. The friction coefficient behavior of PMMA coating was improved by the addition of CaO nanoparticles ; however, volume loss and wear rate values were slightly higher for PMMA/CaO coatings than those corresponding to PMMA coatings. Microhardness of PMMA and PMMA/CaO coatings was also evaluated by Vickers measurements, revealing an increase of one order of magnitude for PMMA/CaO coating. Note de contenu : - Chemical
- Coating deposition
- Evaluation of coatings
DOI : 10.1007/s11998-014-9639-y En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-014-9639-y.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=23653
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 12, N° 2 (03/2015) . - p. 347-355[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 17119 - Périodique Bibliothèque principale Documentaires Disponible Influence of radical photoinitiator content on UV curing process and UV-cured hybrid sol–gel films / Anaïs Even in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 17, N° 2 (03/2020)
[article]
Titre : Influence of radical photoinitiator content on UV curing process and UV-cured hybrid sol–gel films Type de document : texte imprimé Auteurs : Anaïs Even, Auteur ; Guillaume Vignaud, Auteur ; Nadia Guitter, Auteur ; Nathalie Le Bozec, Auteur ; Philippe Tingaut, Auteur ; Yves Grohens, Auteur Année de publication : 2020 Article en page(s) : p. 333-343 Note générale : Bibliogr. Langues : Américain (ame) Catégories : AlkylTriméthoxysilane
Matériaux -- Propriétés barrières
Matériaux hybrides
Méthacrylates
Nanostructures
Photoamorceurs (chimie)
Photoréticulation
Polyaddition
Revêtements -- Propriétés thermomécaniques
Revêtements -- Séchage sous rayonnement ultraviolet
Revêtements organiques
Sol-gel, ProcédéIndex. décimale : 667.9 Revêtements et enduits Résumé : Hybrid sol–gel coatings are widely used as protective layers for aluminum alloys because of their barrier abilities. This study aims at explaining the barrier properties of a sol–gel coating based on alkyltrimethoxysilane and methacrylate resin by its film structure. This approach was examined by modifying one photopolymerization parameter, e.g., by varying the content of radical photoinitiator. By neutral salt spray test and electrochemical impedance spectroscopy, the barrier properties are highlighted. The film structure is related to thermomechanical properties of films whose glass transition temperature and elastic modulus are measured by dynamic mechanical analysis and nanoindentation, respectively. On a finer scale, conversion of methacrylate functions calculated from Fourier transform infrared spectroscopy has given information on the chemical structure of films. The morphology of these coatings is studied by scanning electron microscopy, transmission electron microscopy, atomic force microscopy operating in tapping mode, and X-ray diffraction. Results revealed that formulations containing between 3 and 9 wt% of radical photoinitiator exhibit the maximal conversion of methacrylate functions and, at a microscopic scale, a homogeneous coating where the two organic and inorganic networks are well interpenetrated. This hybrid sol–gel microstructure corresponds to the highest glass transition temperature and the highest mechanical characteristics (elastic modulus, E and hardness, H) and the highest protection performance. This results in the best barrier properties, and thus the highest corrosion resistance. Note de contenu : - EXPERIMENTAL : Materials - Film preparation - Methods
- RESULTS AND DISCUSSION : Aspect - Barrier properties - Thermomechanical properties - Hybrid micro and nanostructure of UV-cured filmsDOI : https://doi.org/10.1007/s11998-019-00276-5 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-019-00276-5.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33985
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Code-barres Cote Support Localisation Section Disponibilité 21658 - Périodique Bibliothèque principale Documentaires Disponible Initiation à la chimie et à la physicochimie macromoléculaires, 15. Exercices et travaux dirigés. Chimie et physico-chimie / Groupe Français d'Etudes et d'Applications des polymères / Strasbourg : GFP (2003)
PermalinkInitiation à la sciences des polymères - Volume 18 : Chimie et procédés de polymérisation / Groupe Français d'Etudes et d'Applications des polymères / Strasbourg : GFP (2010)
PermalinkInitiators for high-solids polyacrylates resins : selection guidelines and performance review / Ginger G. Myers in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 67, N° 841 (02/1995)
PermalinkInteraction between amphoteric polymer and silicic acid tanned leather : Ingenious regulation of ph based on isoelectric point / Ze Liang in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVIII, N° 10 (10/2023)
PermalinkInterfacial studies of crosslinked urethanes : Part III. Structure-property relationships in polyester waterborne polyurethanes / M. W. Urban in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 71, N° 888 (01/1999)
PermalinkIntroduction to farnesene-based polyols / Herbert Chao in ADHESIVES & SEALANTS INDUSTRY (ASI), Vol. 25, N° 4 (04/2018)
PermalinkInvestigating the efficiencies of cationic photoinitiators / Joanna Ortyl in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 205, N° 4607 (04/2015)
PermalinkInvestigation of the effects of formulation on selected properties of UV curable IPN coatings / L. N. Price in JOURNAL OF COATINGS TECHNOLOGY (JCT), Vol. 70, N° 885 (10/1998)
PermalinkKeeping stable / Ewald Kensbock in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 193, N° 4461 (02/2003)
PermalinkKinetic elucidation of a novel photoproduct via irradiation of isopropylthioxanthone with maleic anhydride / Matthew E. Mullings in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 4, N° 3 (09/2007)
PermalinkKnowledge-based control of emulsion polymerization : Tailoring adhesive properties / Oihana Elizalde in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 1, N° 1 (01/2004)
PermalinkLight curing adhesives / Michael Stumbeck in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 196, N° 4502 (07/2006)
PermalinkLighting the way forward : radcure developments / Sandy Morrison in SURFACE COATINGS INTERNATIONAL, Vol. 95, 1 (02/2012)
PermalinkLa microfluidique : un nouvel outil pour la recherche en chimie / Emmanuel Mignard in L'ACTUALITE CHIMIQUE, N° 353-354 (06-07-08/2011)
PermalinkMicrowave synthesis - Magical tool for scientist & the future of resin synthesis / Savita S. Patil in PAINTINDIA, Vol. LXIII, N° 6 (06/2013)
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