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[article]
Titre : A longer life begins in the cradle : Nanoparticles incorporated before polymerisation maximise UV resistance Type de document : texte imprimé Année de publication : 2010 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Dioxyde de titane
HydroxyapatiteL'hydroxyapatite est une espèce minérale de la famille des phosphates, de formule Ca5(PO4)3(OH), usuellement écrite Ca10(PO4)6(OH)2 pour souligner le fait que la maille de la structure cristalline comprend deux molécules. L'hydroxyapatite est le membre hydroxylé du groupe apatite. L'ion OH- peut être remplacé par le fluor, le chlore ou le carbonate.
L'hydroxyapatite cristallise dans le système hexagonal. La poudre d'hydroxyapatite pure est blanche. Celles que l'on trouve dans la nature peuvent cependant être de couleur marron, jaune ou verte.
Nanoparticules
Polyesters
Polymérisation
Résistance au rayonnement ultraviolet
Revêtements
Sol-gel, ProcédéIndex. décimale : 667.9 Revêtements et enduits Résumé : Nanotechnology - Aggregation of nanoparticles can impair both their effectiveness and the appearance of coatings. Two ways to overcome this challenge by incorporating nanoparticles into polyester resin ingredients before polymerisation are described. TiO2 nanoparticles were formed "in situ" by the sol-gel process. Milled hydroxyapatite also performed well, partly due to its low refractive index. En ligne : https://drive.google.com/file/d/1cPf4hlFj2aeGSriB3hYzd6XVIzIgqQch/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8276
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 02/2010 (02/2010)[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011941 - Périodique Bibliothèque principale Documentaires Disponible A macroscopically nondestructive method for characterizing surface mechanical properties of polymeric coatings under accelerated weathering / Ching-Hsuan Chang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 5 (09/2018)
[article]
Titre : A macroscopically nondestructive method for characterizing surface mechanical properties of polymeric coatings under accelerated weathering Type de document : texte imprimé Auteurs : Ching-Hsuan Chang, Auteur ; Chun-Chieh Tien, Auteur ; Hsiang-Chun Hsueh ; Lipiin Sung Année de publication : 2018 Article en page(s) : p. 913-922 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Contrôle non destructif
Essais dynamiques
Indentation des matériaux
Mesure
Microscopie confocale à balayage laser
Morphologie (matériaux)
Nanoindentation
Polyuréthanes
Rayures
Résistance à l'abrasion
Résistance au rayonnement ultraviolet
Revêtements -- Propriétés mécaniques
Surfaces (technologie)
Surfaces -- AnalyseIndex. décimale : 667.9 Revêtements et enduits Résumé : The surface of coatings and plastics is the first target in any degradation process initiated by ultraviolet (UV) radiation or mechanical stress (via scratch and abrasion). Surface damage can lead to changes in optical, morphological, and mechanical properties and can result in pathways for ingress of moisture and corrosive agents. Current test methods for monitoring performance of protective coatings focus on chemical properties and optical properties, such as color and gloss measurements, or invasive tests such as abrasion and cross-cut adhesion. In this study, a macroscopically nondestructive performance protocol using nanoindentation metrology via a well-controlled scratch test was applied to evaluate the scratch resistance and monitor the surface mechanical property changes in a protective coating under accelerated weathering. Polyurethane (PU) coatings with different polyol compositions were chosen for this study. Coating specimens were exposed to high-intensity UV radiation at 55°C and 75% RH conditions. Exposed specimens were removed at specified UV exposure times for surface modulus/hardness and scratch resistance characterization via nanoindentation and scratch test. The effect of polyol type and UV radiation dose on the scratch damage (scratch morphology) was investigated and correlated with the surface hardness and modulus of the materials. Note de contenu : - EXPERIMENTAL : Materials - UV exposure measurements - Polymer interface consortium scratch test protocol (PICSTP) - Suface mechanical measurements and scratch testing - Scratch morphology characterization
- RESULTS AND DISCUSSION : Effect of polyol type - Effect of UV radiationDOI : 10.1007/s11998-017-0042-3 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-017-0042-3.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31116
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 15, N° 5 (09/2018) . - p. 913-922[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20232 - Périodique Bibliothèque principale Documentaires Disponible Measurement modification of barrier properties against UV irradiation of PP composite fibres / A. Ujhelyiovà in INTERNATIONAL POLYMER PROCESSING, Vol. XXVII, N° 1 (03/2012)
[article]
Titre : Measurement modification of barrier properties against UV irradiation of PP composite fibres Type de document : texte imprimé Auteurs : A. Ujhelyiovà, Auteur ; M. Dulikovà, Auteur ; E. Borsig, Auteur ; P. Alexy, Auteur ; O. Brejka, Auteur ; A. Marcincin, Auteur Année de publication : 2012 Article en page(s) : p. 98-104 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Dioxyde de titane
Fibres textiles synthétiques
Matériaux -- Propriétés barrières
Nanoparticules
Non-tricotés
Nontissés
Polypropylène
Résistance au rayonnement ultravioletIndex. décimale : 668.9 Polymères Résumé : Besides comfort and hygiene of textile materials sufficient barrier properties, such as protection against ultraviolet (UV) irradiation, are also often required. For the evaluation of barrier properties of textile materials against UV irradiation, a quantitative expression, “ultraviolet protection factor (UPF)”, is used. This factor correlates with the time period of human skin protection against UV irradiation in the open air. One of the experimental methods for quantitative UPF evaluation involves a spectrophotometric method of fabric testing. This paper describes a novel modification approach to transfer this method to non-woven and non-knitted fabrics. The aim of the transformation was to modify the used method to determine barrier properties of polymer composite fibres so that the measurement could be simplified while keeping the reliability of the obtained results. As a testing material samples of polypropylene fibres with dispersed nanoTiO2 filler reeled on the sheet-metal frame were used. The results show that this modified method gives reliable results and is suitable for development of new kinds of fibres with higher barrier protection against UV irradiation. DOI : 10.3139/217.2548 En ligne : https://drive.google.com/file/d/1Dqd03WX97VL-GebSeByqX-d2refPkz9a/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13738
in INTERNATIONAL POLYMER PROCESSING > Vol. XXVII, N° 1 (03/2012) . - p. 98-104[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 13722 - Périodique Bibliothèque principale Documentaires Disponible Meeting challenges in epoxy floor coatings/floorings / Toine Dinnissen in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 205, N° 4605 (02/2015)
[article]
Titre : Meeting challenges in epoxy floor coatings/floorings Type de document : texte imprimé Auteurs : Toine Dinnissen, Auteur Année de publication : 2015 Article en page(s) : p. 14-17 Langues : Anglais (eng) Catégories : Adhésion
Epoxydes
Formulation (Génie chimique)
Résistance au rayonnement ultraviolet
Résistance chimique
Réticulants
Revêtements de sols industrielsIndex. décimale : 667.9 Revêtements et enduits Résumé : Recent developments in flooring, as well as a hardening technology to comply with the latest performance, health and legislative challenges.
Dow has developed a new curing agent that helps its customers not only formulate better performing floor coatings but which are also safer for the construction workers that apply the material and the end-users that utilise the floor after being put in operation.En ligne : https://drive.google.com/file/d/19n_1A85xPiQA_BkCgd8_RHpFQmRz1_9n/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=23243
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 205, N° 4605 (02/2015) . - p. 14-17[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 16967 - Périodique Bibliothèque principale Documentaires Disponible Microwave-assisted preparation of pyrite and its sensitisation of titanium dioxide in self-cleaning aramid fabrics / Chenghui Zheng in COLORATION TECHNOLOGY, Vol. 134, N° 4 (08/2018)
[article]
Titre : Microwave-assisted preparation of pyrite and its sensitisation of titanium dioxide in self-cleaning aramid fabrics Type de document : texte imprimé Auteurs : Chenghui Zheng, Auteur ; Chang-E Zhou, Auteur ; Zhenming Qi ; Qingqing Zhou ; Chaoxia Wang Année de publication : 2018 Article en page(s) : p. 284-291 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Analyse spectrale
Angle de contact
Bleu de méthylène
Caractérisation
Colorants -- Détérioration
Dioxyde de titane
Dispersions et suspensions
Fibre aramide
Micro-ondes
Photocatalyse
Photodétérioration
PyriteLa pyrite est une espèce minérale composée de disulfure de fer (FeS2), polymorphe de la marcassite ; elle peut contenir des traces de nickel (Ni), cobalt (Co), arsenic (As), cuivre (Cu), zinc (Zn), argent (Ag), or (Au), thallium (Tl), sélénium (Se) et vanadium (V).
Résistance au rayonnement ultraviolet
Textiles et tissus auto-nettoyants
Textiles et tissus synthétiquesIndex. décimale : 667.3 Teinture et impression des tissus Résumé : Titanium dioxide (TiO2) dispersions were obtained by neutralising anatase nano‐titanium dioxide sols prepared by hydrolysing tetrabutyl titanate in acidic aqueous media. Pyrite was initially prepared via the microwave‐assisted method with a mixed solvent of ethylene glycol and small amounts of water, and was then used in sensitising micron‐sized titanium dioxide particles to obtain aramid fabrics with self‐cleaning properties. X‐ray diffraction demonstrated the crystalline structure of pyrite, and ultraviolet‐visible (UV‐vis) spectrum and energy‐dispersive X‐ray spectroscopy characterised the band gaps, surface status on fabrics and the distribution of the pyrite compound's titanium dioxide particles. The contact angle, UV protection factor (UPF) and photocatalytic degradation of methylene blue (MB) were used to evaluate the performance of treated aramid fabrics. Results show that pyrite‐sensitised titanium dioxide compounds obtained at pH 5 have smaller band gap energies and relatively poor wetting abilities, higher UPF values, and perform well in the photocatalytic degradation of MB. The pseudo‐first kinetic model was used to analyse elaborate sections of the curve for the degradation of MB. Note de contenu : - EXPERIMENTAL : Materials - Preparation of titanium dioxide dispersions - Preparation of pyrite - Treatment of aramid fabrics - Characterisation
- RESULTS AND DISCUSSION : X-ray diffraction - UV-vis diffuse spectra - EDS analysis - UPF - Contact angles - Photocatalytic degradation of MB
- Tables : 1. Contact angles of water droplets on aramid fabrics - 2. Pseudo-first kinetic parameters and half-life of the photocatalytic degradation of MBDOI : 10.1111/cote.12348 En ligne : https://onlinelibrary.wiley.com/doi/epdf/10.1111/cote.12348 Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30923
in COLORATION TECHNOLOGY > Vol. 134, N° 4 (08/2018) . - p. 284-291[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20089 - Périodique Bibliothèque principale Documentaires Disponible Migration of hindered amine light stabilizers in automotive clearcoats / Mark E. Nichols in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 10, N° 3 (05/2013)
PermalinkPermalinkNano-scale UV protection additives / Amy Ficon in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 200, N° 4547 (04/2010)
PermalinkNanomaterials in the coating industry / Kathrin Hielscher in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 200, N° 4550 (07/2010)
PermalinkNanoparticles for UV protection of clear wood coatings - field and laboratory trials / Stig L. Bardage in SURFACE COATINGS INTERNATIONAL, Vol. 96, 2 (04/2013)
PermalinkNew D-Iso/NPG gelcoat offers exceptional UV colour stability / Dean Bugg in JEC COMPOSITES MAGAZINE, N° 67 (08-09/2011)
PermalinkNew waterborne segmented polymer dispersions and their performance in coatings applications / Gabor Erdodi in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 205, N° 4613 (10/2015)
PermalinkNew waterborne systems bring fast return-to-service and excellent aesthetics / Zheng Shiying in COATINGS WORLD, Vol. 23, N° 11 (11/2018)
PermalinkA novel cyclocarbonate based technology for isocyanate free polyurethane / Poonam R. Datir in PAINTINDIA, Vol. LVII, N° 5 (05/2007)
PermalinkNovel light stabilisers for waterborne alkyd coatings / Yung-Chi Yang in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 204, N° 4596 (05/2014)
PermalinkPerfectly clear sunscreen included in KUNSTSTOFFE INTERNATIONAL, Vol. 100, N° 8 (08/2010)
PermalinkPerformance of exterior semitransparent PVDF–acrylic coatings / Véronic Landry in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 10, N° 1 (01/2013)
PermalinkPiano black finish without painting / Eike Jahnke in KUNSTSTOFFE INTERNATIONAL, Vol. 103, N° 5 (05/2013)
PermalinkPolyester replaces epoxy in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 10, N° 1 (2017)
PermalinkLes polymères en pointe / Hubert Mueller in PLASTIQUES & CAOUTCHOUCS MAGAZINE, N° 885 (06/2011)
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