![](./images/home.jpg)
![](./images/bar_spacer.gif)
Catégories
![](./images/expand_all.gif)
![](./images/collapse_all.gif)
Etendre la recherche sur niveau(x) vers le bas
Influence of twin-screw processing conditions on structure and properties of polypropylene – organoclay nanocomposites / T. Domenech in INTERNATIONAL POLYMER PROCESSING, Vol. XXVII, N° 5 (11/2012)
![]()
[article]
Titre : Influence of twin-screw processing conditions on structure and properties of polypropylene – organoclay nanocomposites Type de document : texte imprimé Auteurs : T. Domenech, Auteur ; Edith Peuvrel-Disdier, Auteur ; Bruno Vergnes, Auteur Année de publication : 2012 Article en page(s) : p. 517-526 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Argile
Exfoliation
Extrudeuse bi-vis
Matériaux hybrides -- Propriétés mécaniques
Matières plastiques -- Extrusion
Montmorillonite
Nanoparticules
Polypropylène
Traction (mécanique)Index. décimale : 668.4 Plastiques, vinyles Résumé : This study looks at the influence of extrusion parameters such as screw speed, feed rate and barrel temperature on the nanocomposite structure (size of agglomerates, level of intercalation and exfoliation) and its consequences on final mechanical properties. Nanocomposites of polypropylene, maleated polypropylene and organomodified montmorillonite, with respective mass fractions of 85/10/5, were prepared in a co-rotating twin-screw extruder using a masterbatch dilution method. The nanocomposites structure was quantified by scanning and transmission electron microscopy, X-ray diffraction and dynamic rheometry. Relationships between the microstructure at different levels (size and number of agglomerates, interlayer distance, melt yield stress to quantify the exfoliation level) and the processing conditions were established, revealing that specific mechanical energy received during extrusion was the key parameter controlling this microstructure. Mechanical properties in uniaxial tension (apparent Young’s modulus) were measured and related to the microstructural parameters resulting from extrusion conditions. Note de contenu : - MATERIALS AND METHODS : Materials - Nanocomposite preparation - Morphology characterization- X-ray diffraction (XRD) analysis - Rheological analysis - Mechanical properties
- RESULTS AND DISCUSSION : Influence of screw speed on nanocomposite structure - Influence of feed rate on nanocomposite structure - Influence of barrel temperature on nanocomposite structure - Overall influence of processing conditions on nanocomposite structure - Influence of nanocomposite structure on mechanical propertiesDOI : 10.3139/217.2591 En ligne : https://drive.google.com/file/d/14sl9Hnzkq4vEkPqcwl_AcLHL87pOBUMS/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=16628
in INTERNATIONAL POLYMER PROCESSING > Vol. XXVII, N° 5 (11/2012) . - p. 517-526[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 14335 - Périodique Bibliothèque principale Documentaires Disponible Intercalated polybenzoxazine/organoclay composites with enhanced performance in corrosion resistance / Changlu Zhu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 13, N° 1 (01/2016)
![]()
[article]
Titre : Intercalated polybenzoxazine/organoclay composites with enhanced performance in corrosion resistance Type de document : texte imprimé Auteurs : Changlu Zhu, Auteur ; Xin Lu, Auteur ; Zhong Xin, Auteur ; Yanfeng Zhang, Auteur Année de publication : 2016 Article en page(s) : p. 63-72 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Anticorrosion
Argile
Charges (matériaux)
Montmorillonite
Polybenzoxazine
Revêtements protecteursIndex. décimale : 667.9 Revêtements et enduits Résumé : Organoclays modified by two different pillaring agents were introduced in polybenzoxazine (PBz) coatings on mild steel (MS). Both physicochemical properties and corrosion protection performance of composite coatings were fully investigated with the assistance of FTIR, XRD, AFM, SEM, and electrochemical measurements. The octadecyl quaternary ammonium-modified organoclays exhibited an exfoliated structure in polymer matrix, which benefited little in coatings’ barrier property. However, organoclays modified by dimethyl dioctadecyl quarternary ammonium induced an intercalated structure in composites, which greatly enhanced the corrosion resistance of poly(BA-aptms) with corrosion rate reduced by 3 and 4 orders of magnitude, respectively, compared to PBz and bare MS when 3 wt% of organoclays were added. DOI : 10.1007/s11998-015-9722-z En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-015-9722-z.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25372
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 13, N° 1 (01/2016) . - p. 63-72[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 17819 - Périodique Bibliothèque principale Documentaires Disponible Melt creep recovery of polyamide 6 and polypropylene nanocomposites blended with layered silicate / G.-G. Lin in INTERNATIONAL POLYMER PROCESSING, Vol. XXXI, N° 1 (03/2016)
![]()
[article]
Titre : Melt creep recovery of polyamide 6 and polypropylene nanocomposites blended with layered silicate Type de document : texte imprimé Auteurs : G.-G. Lin, Auteur ; Y.-F. Jang Jian, Auteur ; C.-T. Huang, Auteur Année de publication : 2016 Article en page(s) : p. 11-17 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Argile
Composites -- Fluage
Essais dynamiques
Etat fondu (matériaux)
Matériaux hybrides
Montmorillonite
Polyamide 6
Polypropylène
Rhéologie
SilicatesIndex. décimale : 668.4 Plastiques, vinyles Résumé : Nanocomposites of polyamide six (PA6) reinforced with organoclay were prepared in this study through melt mixing. The blended montmorillonite clay was organically modified with octadecylamine. The loadings of the clay were 1 wt%, 5 wt%, and 9 wt%. The obtained nanocomposites exhibited exfoliation (1 wt%) and intercalation (other compositions) structures. By contrast, if they were mixed with unmodified clay, the PA6 molecules could not enter the silicate interlayer. For polypropylene (PP), forming nanocomposites with organoclay was difficult but made feasible by incorporating the maleated PP. The results of dynamic rheological tests demonstrated that an end-tethered storage modulus was observed for the PA6/organoclay nanocomposites. However, the PP/organoclay exhibited terminal-zone behavior. In addition, the shear creep recovery was conducted on the molten polymer composites. The results indicated that the molten PA6/organoclay nanocomposite exhibited a higher creep-recovery ratio, a measure of the elastic property, than that of pristine PA6. The time constant in the Voigt-Kelvin constitutive model for the PA6/organoclay melts was lower than that of the pristine PA6 due to the superior elastic moduli, because it is defined as the ratio of viscosity to the modulus. However, the recovery ratios for most of the PP nanocomposites were found to be less than that for the pristine PP, indicating the fair reinforcing effect of the organoclay. Note de contenu : - EXPERIMENTAL : Materials - Clay modification - Preparing nanocomposites - Structure characterization - Rheological measurement - Constitutive model
- RESULTS AND DISCUSSION : X-ray diffraction patterns - Dynamic testing - Creep recoveryDOI : 10.3139/217.3041 En ligne : https://drive.google.com/file/d/1Hu1p5PTOyzSpFifWGlANMWkM2kqBy5SO/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25761
in INTERNATIONAL POLYMER PROCESSING > Vol. XXXI, N° 1 (03/2016) . - p. 11-17[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 17899 - Périodique Bibliothèque principale Documentaires Disponible Microcellular PP vs. microcellular PP/MMT nanocomposites : a comparative study of their mechanical behavior / S. J. A. Rizvi in INTERNATIONAL POLYMER PROCESSING, Vol. XXVI, N° 4 (09/2011)
![]()
[article]
Titre : Microcellular PP vs. microcellular PP/MMT nanocomposites : a comparative study of their mechanical behavior Type de document : texte imprimé Auteurs : S. J. A. Rizvi, Auteur ; Naresh Bhatnagar, Auteur Année de publication : 2011 Article en page(s) : p. 375-382 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Anhydride maléique
Azote
Copolymères greffés
Extrudeuse bi-vis
Fluides supercritiques
Matières plastiques -- Moulage par injection microcellulaire
Montmorillonite
Mousses plastiques -- Extrusion
Mousses plastiques -- Propriétés mécaniques
Nanoparticules
Nucléation
PolypropylèneIndex. décimale : 668.9 Polymères Résumé : Microcellular foams have attracted interest in both scientific and industrial communities. Injection molding is perhaps the most versatile industrial method of polymer processing. Microcellular injection molding is a newcomer variant in this class. It is capable to produce microcellular structure. The mechanical behavior of a microcellular polymer is different than conventional foams. Although they exhibit much improved mechanical properties than conventional foams still they are inferior to solid polymer. Incorporation of nanoparticles in matrix may affect the nucleation and bubble growth process. Further, nanoparticles will enhance the performance (stiffness, strength etc.) of matrix. In present study an effort has been made to quantitatively analyze the improvements in mechanical properties of microcellular foam with the addition of nanoclay (MMT). Nanocomposite of polypropylene and nanoclay was prepared in a co-rotating twin screw extruder. Maleic anhydride grafted polypropylene (PP-g-MA) was used as compatibilizer. PP/nanocomposites were foamed in a microcellular injection molding machine, where supercritical nitrogen (SCF-N2) was mixed with plasticized PP/ nanocomposite inside the screw – barrel assembly. The molded foamed samples were tested for various mechanical properties. Experimental results show that a considerable improvement occur in the property of microcellular polypropylene by the addition of 2 wt.% nanoclay (MMT). DOI : 10.3139/217.2375 En ligne : https://drive.google.com/file/d/1f6-1RrQ1xrQyO-cb5JWkYXr4szFJ_G6i/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12435
in INTERNATIONAL POLYMER PROCESSING > Vol. XXVI, N° 4 (09/2011) . - p. 375-382[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 013208 - 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
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 20078 - Périodique Bibliothèque principale Documentaires Disponible Nanocomposites of acrylate-organosilicon resin/layered silicate for leather finishing / Zhang Xiaolei in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 90, N° 6 (11-12/2006)
![]()
PermalinkOrganoclay-assisted vat dyeing of polypropylene nanocomposite fabrics / Yehya A. Youssef in COLORATION TECHNOLOGY, Vol. 137, N° 6 (12/2021)
![]()
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)
![]()
PermalinkPerformance enhancement of the anti-corrosion coating based on Ce3+-polyaniline montmorillonite composite/epoxy-ester system / Zhen Hua Zhang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 5 (09/2017)
![]()
PermalinkPoly(lactic acid)/acrylonitrile butadiene styrene nanocomposites with hybrid graphene nanoplatelet/organomontmorillonite : effect of processing temperatures / Mohd Bijarimi in INTERNATIONAL POLYMER PROCESSING, Vol. XXXV, N° 4 (08/2020)
![]()
PermalinkPreparation and application of vinyl polymer-mmt nano tanning agent / Ma Jianzhong in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 89, N° 5 (09-10/2005)
![]()
PermalinkPreparation and characterization of nanocomposite uralkyd varnishes for a wood substrate / Krysztof Kowalczyk in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 11, N° 3 (05/2014)
![]()
PermalinkPreparation and properties of EPDM/NBR/organoclay nanocomposites / M. Ersali in INTERNATIONAL POLYMER PROCESSING, Vol. XXVII, N° 2 (05/2012)
![]()
PermalinkPreparation and properties of hybrid epoxy/hydro-terminated polybutadiene/modified MMT nanocomposites / Hongling Yi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 6 (11/2018)
![]()
PermalinkPreparation and properties of a methacrylic acid-co-modified maleic anhydride/montmorillonite nanocomposite for tanning / Yan Bao in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 95, N° 4 (07-08/2011)
![]()
PermalinkPreparation and surface characterisation of novel epoxy-based organic-inorganic nano-composite coatings / M. Å pÃrková in SURFACE COATINGS INTERNATIONAL. PART B : COATINGS TRANSACTIONS, Vol. 88, B4 (12/2005)
![]()
PermalinkPreparation of modified montmorillonite/graphene oxide composites to enhance the anticorrosive performance of epoxy coatings / Quanxian Hua in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 3 (05/2023)
![]()
PermalinkPreparation of nanocomposites containing montmorillonite and SiO2 particle for leather tanning agent / Yan Bao in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVII, N° 12 (12/2012)
![]()
PermalinkPreparation of novel organo-montmorillonite and its influence on the acid resistance of hybrid cathodic electrodeposition polyurethane coating / Zijian Li in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 2 (03/2019)
![]()
PermalinkA rescue of colors from dye-wastewater / Saloana Santina Gomes Santos in L'ACTUALITE CHIMIQUE, N° 444-445 (10-11/2019)
PermalinkRhéologie des suspensions. Rhéologie à toutes les échelles / Groupe Français de Rhéologie / Groupe Français de Rhéologie (2002)
PermalinkRotational molding of polyamide-6 nanocomposites with improved flame retardancy / E. Calò in INTERNATIONAL POLYMER PROCESSING, Vol. XXVII, N° 3 (07/2012)
![]()
PermalinkSalt-controlled self-healing nanogel composite embedded with epoxy as environmentally friendly organic coating / Ayman M. Atta in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 5 (09/2017)
![]()
PermalinkStructure properties and corrosion resistivity of polymeric nanocomposites coatings based on layered silicates / Davood Zaarei in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 5, N° 2 (06/2008)
![]()
PermalinkStudy of the simultaneous effects of MMT nanoclay and hydrophobically modified ethoxylated urethane (HEUR) on viscoelastic and steady shear properties of water-based acrylic resins / Mohsen Sarrafi in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 10, N° 5 (09/2013)
![]()
Permalink