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Titre : Minéral ou soin élémentaire Type de document : texte imprimé Auteurs : Jacques Sebag, Auteur Année de publication : 2019 Article en page(s) : p. 124-132 Langues : Multilingue (mul) Catégories : Argile
Composés inorganiques
Ingrédients cosmétiques
Métaux précieux
MinérauxIndex. décimale : 668.5 Parfums et cosmétiques Résumé : L'essor du naturel en cosmétique tien pour une large part à la demande de produits naturels ou d'origine végétale. Cependant, le phénomène ne saurait s'y limiter. Il tient aussi à l'avènement de certaines pensées du soin où le "simple", "l'essentiel", et parfois même le "magique", semblent tenir lieu de principes fondamentaux. Dans cette perspective, le minéral pourrait bien être plus naturel et plus fondamental que n'importe quelle autre plante d'usage immémorial. Note de contenu : - Les minéraux au plus intime du vivant
- La matière minérale comme expérience sensorielle
- Pierres et métaux précieux : la tentation énergétiqueEn ligne : https://drive.google.com/file/d/1uZMBFhuijxfy8xVFpIAS67qWo9-sjgIq/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33243
in EXPRESSION COSMETIQUE > N° 59 (09-10/2019) . - p. 124-132[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 21210 - Périodique Bibliothèque principale Documentaires Disponible Monitoring the production of polymer nanocomposites by melt compounding with on-line rheometry / S. T. Mould in INTERNATIONAL POLYMER PROCESSING, Vol. XXVII, N° 5 (11/2012)
[article]
Titre : Monitoring the production of polymer nanocomposites by melt compounding with on-line rheometry Type de document : texte imprimé Auteurs : S. T. Mould, Auteur ; J. M. Barbas, Auteur ; A. V. Machado, Auteur ; J. M. Nóbrega, Auteur ; Jose A. Covas, Auteur Année de publication : 2012 Article en page(s) : p. 527-534 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alliages polymères
Argile
Diffractométrie de rayons X
Matériaux hybrides
Nanotubes
Polyamide 6
Polymères -- Fusion
Polypropylène
Production
RhéométrieIndex. décimale : 668.4 Plastiques, vinyles Résumé : Polymer nanocomposites are often prepared by melt compounding due to the suitability of the latter to industrial scale production. Even though monitoring the production process for quality control and/or optimization purposes is generally done off-line, the possibility of using on-line oscillatory rheometry has many inherent advantages. This work illustrates the use of a prototype rheometer to monitor the production of polymer nanocomposites by making measurements at specific locations along the extruder axis. The device is presented and its operation is explained. Examples of its use to characterize polypropylene and polyamide matrix nanocomposites with organoclays and carbon nanotubes are discussed, thus demonstrating the usefulness of the device. Note de contenu : - THE ON-LINE OSCILLATORY RHEOMETER
- MATERIALS AND EXPERIMENTAL DATA : Materials - Processing conditions - On-line rheological measurements
- MONITORING THE PRODUCTION OF POLYMER NANOCOMPOSITES : Effect of composition - Effects of screw speed - Measurements along the extruder axisDOI : 10.3139/217.2597 En ligne : https://drive.google.com/file/d/1YUEoH556nHlPaOIfj6YSUk5v0wkqb88B/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16630
in INTERNATIONAL POLYMER PROCESSING > Vol. XXVII, N° 5 (11/2012) . - p. 527-534[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 14335 - Périodique Bibliothèque principale Documentaires Disponible Montmorillonite nanoclay-based self-healing coatings on AA 2024-T4 / S. Manasa in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 4 (07/2018)
[article]
Titre : Montmorillonite nanoclay-based self-healing coatings on AA 2024-T4 Type de document : texte imprimé Auteurs : S. Manasa, Auteur ; T. Siva, Auteur ; S. Sathiyanarayanan, Auteur ; K. V. Gobi, Auteur ; R. Subasri, Auteur Année de publication : 2018 Article en page(s) : p. 721-735 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Analyse spectrale
Anticorrosifs
Anticorrosion
Argile
Caractérisation
Epaisseur -- Mesure
Essais (technologie)
Essais d'adhésion
Montmorillonite
Revêtement autoréparant:Peinture autoréparante
Revêtements -- Analyse:Peinture -- Analyse
Revêtements protecteurs
Sol-gel, ProcédéIndex. décimale : 667.9 Revêtements et enduits Résumé : Cation-exchanged montmorillonite (MMT), which is an aluminum-pillared clay, was dispersed into an organic–inorganic hybrid silica matrix sol. Cationic inhibitors Ce3+/Zr4+ were introduced into montmorillonite by two methods, namely (1) physical mixing of MMT with the inhibitor solutions and (2) physical mixing for short durations and evacuation of the mixture of MMT and inhibitor solutions. Coatings using these sols were deposited on aluminum alloy AA 2024-T4 substrates, by the dip coating technique followed by thermal curing at 130°C for 1 h. TEM, BET, and XRD analyses were carried out for the inhibitor-modified montmorillonite powders. Potentiodynamic polarization and electrochemical impedance spectroscopic analyses were carried out on uncoated and coated substrates to evaluate the corrosion protection property after exposure to 3.5 wt% NaCl for varying time durations, up to 120 h. Self-healing ability was evaluated using SVET analysis by creating an artificial scribe on the surface and exposure to 3.5 wt% NaCl. Elemental mapping was carried out on scribed substrates before and after exposure to 5 wt% salt fog. Sols containing montmorillonite intercalated with cationic inhibitors when deposited on AA 2024-T4 substrates exhibited low corrosion currents after a prolonged duration of exposure to corrosion medium. Note de contenu : - EXPERIMENTAL : Materials - Sol synthesis and coating deposition - Characterization and testing
- RESULTS AND DISCUSSION : TEM and SEM analysis - X-ray diffraction (XRD) analysis - BET surface area and pore volume analysis - Thickness measurement - SEM and EDS analysis - Adhesion test - Electrochemical impedance spectroscopic (EIS) and potentiodynamic polarization studies - Weight loss experiments - Salot fog test (SFT) and energy-dispersive x-ray spectroscopic (EDS) analysis - SVET analysisDOI : 10.1007/s11998-018-0080-5 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-018-0080-5.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30850
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 15, N° 4 (07/2018) . - p. 721-735[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20078 - Périodique Bibliothèque principale Documentaires Disponible Morphology control and stabilization in immiscible polypropylene and polyamide 6 blends with organoclay / J. Huang in INTERNATIONAL POLYMER PROCESSING, Vol. XXIX, N° 4 (08/2014)
[article]
Titre : Morphology control and stabilization in immiscible polypropylene and polyamide 6 blends with organoclay Type de document : texte imprimé Auteurs : J. Huang, Auteur ; Yutian Zhu, Auteur ; W. Jiang, Auteur ; R. Cardinaels, Auteur ; P. Moldenaers, Auteur ; D. Shi, Auteur Année de publication : 2014 Article en page(s) : p. 522-534 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alliages polymères
Alliages polymères -- propriétés mécaniques
Argile
Essais dynamiques
Etat fondu (matériaux)
Polyamide 6
Polypropylène
Rhéologie
Traction (mécanique)Index. décimale : 668.4 Plastiques, vinyles Résumé : In the current study, 70/30 (w/w) polypropylene (PP)/polyamide 6 (PA6)/organoclay ternary blends were prepared by melt mixing in three different blending sequences, i. e., organoclay premixed with PA6 and then mixed with PP (S1 blending sequence), organoclay premixed with PP and then mixed with PA6 (S2 blending sequence), and organoclay, PA6 and PP mixed simultaneously (S3 blending sequence). The effects of organoclay on the phase morphologies, rheological properties and mechanical properties of the blends are examined to reveal the role of organoclay in these immiscible blends. First of all, the dispersion and distribution of organoclay is investigated using XRD and TEM techniques. The organoclay is exfoliated and distributed in the dispersed PA6 phase as well as at the interface between PA6 and PP. Interestingly, more organoclay sheets are observed at the interface when the S2 or S3 blending sequences are utilized. From the SEM images, it is clear that the domain size of the PA6 phase decreases remarkably after introducing organoclay into the PP/PA6 blends. Two different rheological protocols are applied to probe the effect of organoclay on the morphology of the blend by in-situ monitoring the morphological evolution. The rheological results reveal that the phase morphology of the PP/PA6 blends remains relatively stable during shear for a wide range of shear rates when 1.0 wt% organoclay has been added. For the blends with a relatively high clay loading (5.0 wt%), a characteristic and pronounced “plateau” is observed in the low frequency range of the G?-? curves, which indicates the presence of a percolating network of clay nanosheets. From the mechanical measurements, we find that the tensile strength of the blends increases slightly first and then declines dramatically with increasing organoclay content. Moreover, the elongation at break drops sharply as the organoclay content increases. In summary, it is clear that the organoclay can effectively reduce the domain size of the dispersed PA6 phase and stabilize the phase morphology in shear flow. However, the mechanical properties of the blends are not really improved by clay addition, even though a cocontinuous morphology with a percolated clay network was generated. Note de contenu : - EXPERIMENTAL : Materials - Blends preparation - Characterization
- RESULTS AND DISCUSSION : Structures and morphologies of PP/PA6/organoclay blends - Rheological properties - Mechanical properties of PP/PA6/organoclay compositesDOI : 10.3139/217.2912 En ligne : https://drive.google.com/file/d/1P4TyufW0X7ZBWoXeGEzLm49rttwOQVIk/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21832
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Code-barres Cote Support Localisation Section Disponibilité 16454 - Périodique Bibliothèque principale Documentaires Disponible Multifunctional coating based on nano fillers and natural substances / Roberto Cafagna in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 208, N° 4647 (12/2018)
[article]
Titre : Multifunctional coating based on nano fillers and natural substances Type de document : texte imprimé Auteurs : Roberto Cafagna, Auteur ; Samuel Kenig, Auteur Année de publication : 2018 Article en page(s) : p. 23-27 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Angle de contact
Anticorrosifs
Anticorrosion
Antimicrobiens
Argile
Charges (matériaux)
Epoxydes
Essais de brouillard salin
Essais de résilience
Marines (peinture)
Marines (peinture) -- Aspect de l'environnement
Nanoparticules
Primaire (revêtement)
Revêtements antisalissures:Peinture antisalissures
Revêtements multicouches
SiliceLa silice est la forme naturelle du dioxyde de silicium (SiO2) qui entre dans la composition de nombreux minéraux.
La silice existe à l'état libre sous différentes formes cristallines ou amorphes et à l'état combiné dans les silicates, les groupes SiO2 étant alors liés à d'autres atomes (Al : Aluminium, Fe : Fer, Mg : Magnésium, Ca : Calcium, Na : Sodium, K : Potassium...).
Les silicates sont les constituants principaux du manteau et de l'écorce terrestre. La silice libre est également très abondante dans la nature, sous forme de quartz, de calcédoine et de terre de diatomée. La silice représente 60,6 % de la masse de la croûte terrestre continentale.
SiliconesLes silicones, ou polysiloxanes, sont des composés inorganiques formés d'une chaine silicium-oxygène (...-Si-O-Si-O-Si-O-...) sur laquelle des groupes se fixent, sur les atomes de silicium. Certains groupes organiques peuvent être utilisés pour relier entre elles plusieurs de ces chaines (...-Si-O-...). Le type le plus courant est le poly(diméthylsiloxane) linéaire ou PDMS. Le second groupe en importance de matériaux en silicone est celui des résines de silicone, formées par des oligosiloxanes ramifiés ou en forme de cage (wiki).
VanillineIndex. décimale : 667.9 Revêtements et enduits Résumé : The demands of the marine industry for functional coatings are diversified : From corrosion protection of the ship's hull, through to anti fouling characteristics and reduced friction with the aim to save fuel and improve a vessels performance. Furthermore, new environ mental regulations regarding antifouling coating systems require the elimination of toxins release, which led to the development and adoption of new more environmentally friendly technologies. Consequently, the present research proposes a multifunctional coating system, exploiting nanotechnology and biotechnology, in order to meet the antifouling and anticorrosion requirements of the marine industry. Three innovative, environmentally friendly coating systems were developed exploiting the properties of functionalised nanoclays, treated nanosilicas and novel ecologically compatible anti-microbial reduced adhesion agent based on natural su bstances.These coatings are based on unique cross proprietary patented technologies and can be integrated to give a multifunctional and multilayer protection system. Note de contenu : - EXPERIMENTAL : Functionalised nanoclays - Tailored nanosilica - Natural antifouling agent
- DESCRIPTION OF COATING SYSTEM 1 : Primer and intermediate
- DESCRIPTION OF COATING SYSTEM 2 : Primer and intermediate - Topcoat
- DESCRIPTION OF COATING SYSTEM 3 : Primer and intermediate - Final layer
- Table 1 : Coating system 1 (based on nanoclays)
- Table 2 : Coating system 2 (nanoclays + vanillin)
- Table 3 : Coating system 3 (nanoclays + nanosilicas)
- Table 4 : Corrosion test in artificial atmosphere/salt spray test according to ISO 9227
- Table 5 : Epoxy silicone systems containing SNPs exhibited up to 36% decrease in drag compared to the same coating without SNPs
- Fig. 1 : Epoxy primer and intermediate with functionalised nanoclays - FESEM analysis
- Fig. 2 : Examples of super hydrophobic surfaces (SHS) obtained by silica nanoparticles
- Fig. 3 : Corrosion test in artificial atmosphere/salt spray test according to ISO 9227
- Fig. 4 : Aggressive liquid resistance test : standard UNI EN ISO 2812-1 caustic soda 10 %
- Fig. 5 : Aggressive liquid resistance test : standard UNI EN ISO 2812-1 sulphuric acid 10 %
- Fig. 6 : System 1 on field application on the URSUS boat
- Fig. 7 : Testing of biofouling proliferation on an epoxy topcoat with vanillin
- Fig. 8 : Contact angle measurements of epoxy-silicone systems with silica nano-particles (SNPs) in either aprotic of protic solvent
- Fig. 9 : Proposed mechanism of modified nanoclays orientation on a high surface energyEn ligne : https://drive.google.com/file/d/1B0jwybe1XVrsPIVBQS0kdfxUwsZFWuSi/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31515
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Code-barres Cote Support Localisation Section Disponibilité 20463 - Périodique Bibliothèque principale Documentaires Disponible Nanoclay-based self-healing, corrosion protection coatings on aluminum, A356.0 and AZ91 substrates / S. Manasa in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 5 (09/2017)
PermalinkNanoclay migration and the rheological response of PBAT-LDPE blends / M. Nofar in INTERNATIONAL POLYMER PROCESSING, Vol. 36, N° 3 (2021)
PermalinkNanotechnology & coatings Q & A / Vinayak M. Natu in PAINTINDIA, Vol. LVIII, N° 12 (12/2008)
PermalinkNatural and synthetic clay-filled coatings for insulation barrier applications / Roy T. Fox in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 13, N° 1 (01/2016)
PermalinkNatural rheology modifiers to replace microplastics in GLOBAL PERSONAL CARE, Vol. 22, N° 10 (11/2021)
PermalinkNew advances in rheological performance in high solids marine and protective coatings / Tony Hennessy in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 204, N° 4597 (06/2014)
PermalinkNew photoinitiating systems designed for polymer/inorganic hybrid nanocoatings / Yusuf Yagci in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 9, N° 2 (03/2012)
PermalinkA novel approach for wet-white leather manufacture based on tannic acid-laponite nanoclay combination tannage / Jiabo Shi in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 100, N° 1 (01-02/2016)
PermalinkOpaque extenders as a partial replacement to TiO2 / Monika Deshmukh in PAINTINDIA, Vol. LXVII, N° 7 (07/2017)
PermalinkOptimiser la dispersion des nanoparticules / Jérémie Soulestin in PLASTIQUES & CAOUTCHOUCS MAGAZINE, N° 871 (11/2009)
PermalinkPermalinkOrganoclay-assisted vat dyeing of polypropylene nanocomposite fabrics / Yehya A. Youssef in COLORATION TECHNOLOGY, Vol. 137, N° 6 (12/2021)
PermalinkOrganoclay imparts scratch resistance / David Evans in KUNSTSTOFFE INTERNATIONAL, Vol. 107, N° 1-2 (01-02/2017)
PermalinkOrganoclays assisted vat and disperse dyeing of poly(ethylene terephthalate) nanocomposite fabrics via melt spinning / Aballa A. Mousa in COLORATION TECHNOLOGY, Vol. 134, N° 2 (04/2018)
PermalinkOrganoclays : Rheological additives for solvent-borne coatings / Valentina Ermini in PAINTINDIA, N° annuel 2002 (2002)
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