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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)
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[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
in INTERNATIONAL POLYMER PROCESSING > Vol. XXIX, N° 4 (08/2014) . - p. 522-534[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 16454 - Périodique Bibliothèque principale Documentaires Disponible Mousses à raser : Caractérisations rhéologiques / M. Arnaud-Roux in LES CAHIERS DE RHEOLOGIE, Vol. XV, N° 4 (10/1997)
[article]
Titre : Mousses à raser : Caractérisations rhéologiques Type de document : texte imprimé Auteurs : M. Arnaud-Roux, Auteur ; J.-L. Morancais, Auteur ; H. Andriantseheno, Auteur Année de publication : 1997 Article en page(s) : p. 215-222 Note générale : Bibliogr. Langues : Français (fre) Catégories : Caractérisation
Produits de rasage
RhéologieIndex. décimale : 532.05 Mécanique des fluides et des liquides - Dynamique (cinétique et cinématique) Résumé : L'objet de cette étude était d'évaluer l'incidence du remplacement d'une matière première dans une formule de mousse à raser commercialisée. A l'état faiblement perturbé, ces mousses se comportent comme des gels faibles. Elles se fluidifient sous l'effet de forts cisaillements mais il n'existe quasiment pas d'hystérésis sur leur profil d'écoulement. Les valeurs d'angles de perte, de modules complexes et de viscosités varient légèrement avec le taux de vidange et la formule mais les variations moyennes sont inférieures à celles observées entre deux bombes présumées identiques. Par conséquent, l'utilisateur ne devrait pas percevoir de variation de compacité, fluidité et facilité d'étalement de la mousse lors de la modification de formulation. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5710
in LES CAHIERS DE RHEOLOGIE > Vol. XV, N° 4 (10/1997) . - p. 215-222[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 002127 - Périodique Bibliothèque principale Documentaires Disponible MS sealants : A comparative study of performance properties / Allan Hutchinson in ADHESIVES AGE, Vol. 39, N° 4 (04/1996)
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Titre : MS sealants : A comparative study of performance properties Type de document : texte imprimé Auteurs : Allan Hutchinson, Auteur ; Antonio Pagliuca, Auteur Année de publication : 1996 Article en page(s) : p. 16-20 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésion
Construction -- Matériaux
Joints d'étanchéité
Mastics
Polyéthers silylés
Polymères à silane modifié
Polyuréthanes
Rhéologie
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).Index. décimale : 668.3 Adhésifs et produits semblables Résumé : A variety of polymer backbones and crosslinking systems can be used in construction sealants - a reflection, in part, of the diverse performance requirements found in a range of applications. This article will evaluate properties elastic sealants, which are likely to be used in the most demanding movement applications. Including in the evaluation is a new technology polymer - MS Polymer, which can be described as a silyl terminated polyether developed by Kaneka Corp. in Japan (1,2). MS Polymer is finding commercial use in Japan, Europe and the USA as a base polymer for adhesives and sealants. Three one-part sealant types are assessed - MS Sealant, silicone and polyurethane. Note de contenu : - CONSTRUCTION SEALANTS : Performance requirements : Rheology and curing characteristics - Bulk material properties - Adhesion
- EXPERIMENTAL
- TESTING : Measurement of Modulus, Tg (bulk properties) and adhesion to clean substrates - Measurement of application properties - Adhesion to contaminated surfaces
- SUMMARY OBSERVATIONS : Curing - Application properties - Adhesion to clean substrates
- ADHESION TO CONTAMINATED SUBSTRATES
- POTENTIAL APPLICATIONS OF MS SEALANTSEn ligne : https://drive.google.com/file/d/1x3kmCIpvk8zNigj4RU2Uqc0UQ9qoYkLo/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20488
in ADHESIVES AGE > Vol. 39, N° 4 (04/1996) . - p. 16-20[article]Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 001062 - Périodique Bibliothèque principale Documentaires Exclu du prêt Multi-purpose rheology / Heinz-Guenther Schulte in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 197, N° 4508 (01/2007)
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Titre : Multi-purpose rheology Type de document : texte imprimé Auteurs : Heinz-Guenther Schulte, Auteur Année de publication : 2007 Article en page(s) : p. 34-35 Langues : Anglais (eng) Catégories : Résistance à l'abrasion
Revêtements en phase aqueuse -- Additifs:Peinture en phase aqueuse -- Additifs
RhéologieIndex. décimale : 667.9 Revêtements et enduits Résumé : This paper is about rheology additives combining both performance and sustainability benefits - qualites previously as mutually exclusive.
The demand for sustainable paints and varnishes is steadily rising and consmumers are increasingly asking for coatings that combine ecological soundness with outstanding technical performance. If coatings products are to have wide appeal in the DIY and professional decorator markets, it is essential that they be easy to use, environmentally sound and provide outstanding overall performance.
Consumers demand water-based coatings that give the same surface quality as solvent-based products. They also expect easy application and spatter resistance when using rollers - and all without the product containing volatile organic compounds (VOCs) or posing health risks or danger to the environment. Formulators are eager to serve that demand and, naturally, have to make sure their manufacturing processes are cost-effective. To serve the demand for high-quality and environmentally sound coatings, 'smart' raw materials are necessary.Note de contenu : - High performance solutiojs
- Reduced spatter
- Less wearEn ligne : https://drive.google.com/file/d/1Z9VR-kHa6H4ZiY__CTEZuuhsLnc02Bdb/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27444
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 197, N° 4508 (01/2007) . - p. 34-35[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 006197 - Périodique Bibliothèque principale Documentaires Disponible Multifunctional material analysis / Xandra Puntigam in KUNSTSTOFFE INTERNATIONAL, Vol. 109, N° 6-7 (06-07/2019)
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Titre : Multifunctional material analysis : From melt rheology to the mechanical properties of 3D-printed components Type de document : texte imprimé Auteurs : Xandra Puntigam, Auteur ; Alexander Troiss, Auteur Année de publication : 2019 Article en page(s) : p. 46-48 Langues : Anglais (eng) Catégories : Analyse mécanique dynamique
Essais dynamiques
Etat fondu (matériaux)
Impression tridimensionnelle
Mesure
Modélisation par dépôt en fusion
Polyéther éther cétone
Rhéologie
Transition vitreuseIndex. décimale : 668.4 Plastiques, vinyles Résumé : A multifunctional measuring unit combines rheological characterization with dynamic mechanical analysis. This enables extensive material characterizations to be carried out on a single instrument. Using the example of additive manufacturing of PEEK by fused deposition modeling (FDM), the material characterization of filament, melt, and final component is demonstrated. Note de contenu : - Use of rheometers to characterize PEEK
- Rheological measurement of the PEEK melt
- DMA measurement of the additive manufactured PEEK bars
- Figure : Plate-plate configuration (25 mm diameter) for rheological measurement of a polymer melt on the MCR 702 MultiDrive rheometer with a convection oven (CTD 600 MultiDrive Ready)
- Fig. 1 : Frequency sweep measurements of a PEEK melt. At +380 °C, the PEEK melt has a viscosity some 30 % lower than at +350 °C and is therefore better suited for FDM
- Fig. 2 : Solid rectangular fixture or SRF for temperature-dependent dynamic mechanical analysis of additive manufactured PEEK bars on the MCR 702 MultiDrive rheometer with a convection oven (CTD 600 MultiDrive Ready)
- Fig. 3 : Temperature-dependent DMA measurements of an FDM-processed PEEK filament. The shear modulus G is shown in red and the tensile modulus E in green ; measurement in tension is represented by the solid lines and in torsion by the dotted lines
- Fig. 4 : The glass transition temperature of PEEK according to ISO 11357 can be directly calculated with the aid of the softwareEn ligne : https://drive.google.com/file/d/19uRuVTgWDvswLGZJA2YTqs-7xJPnUgJ4/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32991
in KUNSTSTOFFE INTERNATIONAL > Vol. 109, N° 6-7 (06-07/2019) . - p. 46-48[article]Réservation
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PermalinkNanoclay migration and the rheological response of PBAT-LDPE blends / M. Nofar in INTERNATIONAL POLYMER PROCESSING, Vol. 36, N° 3 (2021)
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PermalinkNanofibrous polypeptide hydrogels with collagen-like structure as biomimetic extracellular matrix / Chengkun Zhao in COLLAGEN AND LEATHER, Vol. 5 (2023)
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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)
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PermalinkNew applications for CAB / K. R. Walker in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 192, N° 4452 (05/2002)
PermalinkNew approach to melt pressure determination during screw channel flow / R. Steller in INTERNATIONAL POLYMER PROCESSING, Vol. 36, N° 2 (2021)
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PermalinkNew developments in the field of surfactant thickeners / Matthias Loeffler in SOFW JOURNAL, Vol. 133, N° 4 (04/2007)
PermalinkNew flow promoter for environmental friendly coatings systems / Ming Zhao in PAINTINDIA, N° annuel 2002 (2002)
PermalinkA new generation of elastomers containing innovative biopolymers / Miroslawa Prochon in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 100, N° 1 (01-02/2016)
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