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On the use of an internal mixer to study the impregnation of carbon fillers by organic liquids / Meral Akkoyun in APPLIED RHEOLOGY, Vol. 24, N° 1 (2014)
[article]
Titre : On the use of an internal mixer to study the impregnation of carbon fillers by organic liquids Type de document : texte imprimé Auteurs : Meral Akkoyun, Auteur ; Christian Carrot, Auteur ; Benoît Blottière, Auteur Année de publication : 2014 Article en page(s) : 8 p. Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Carbonate de propylène
Charbon actif
Diméthylsulfoxyde
Malaxeurs et mélangeurs
Matériaux -- Imprégnation
RhéologieIndex. décimale : 532.05 Mécanique des fluides et des liquides - Dynamique (cinétique et cinématique) Résumé : lmpregnation of organic liquid electrolytes in conductive powders is of major importance in the field of energy storage devices such as batteries or super-capacitors. Impregnation during mixing and processing operations becomes usual for practical reasons and requires a better understanding of the changes of the rheological behavior of the mix. In this paper, the impregnation of propylene carbonate (PC) and dimethyl sulfoxide (DMSO) in activated carbon (AC) and carbon black (CB) was studied by using an internal mixer. Monitoring of the torque of the filler/liquid blend as a function of the amount of liquid fed in the mixing chamber, enables to detect the transition from the solid friction of the dry powder to the lubricated liquid (or viscous) behaviour of the concentrated paste of wetted powder. The results were compared with data obtained by conventional nitrogen adsorption porosimetry combined with the knowledge of the molecular diameter of the liquids. A characteristic change was observed as soon as the liquid completely fills the porosity of the filler. Both tested liquids (DMSO and PC) impregnate more carbon black and the take-up rate is slightly higher for DMSO in comparison to PC because, as a polar liquid, DMSO has a better interaction with both fillers. Note de contenu : - MATERIALS AND METHODS : Materials - Experiments
- RESULTS AND DISCUSSION : Intrusion of DMSO and PC in activated carbon : results from internal mixer - Adsorption of DMSO and PC on activated carbon : results from nitrogen porosimetry - Adsorption of DMSO and PC on activated carbon : the transition from frictional to hydrodynamic regime - Intrusion of DMSO and PC in carbon black - Comparison of the intrusion of PC and DMSO in activated carbon and carbon blackRéférence de l'article : 13487 DOI : 10.3933/ApplRheol-24-13487 Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21554
in APPLIED RHEOLOGY > Vol. 24, N° 1 (2014) . - 8 p.[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 16175 - Périodique Bibliothèque principale Documentaires Disponible Operating out of sight / Rolf Heusser in KUNSTSTOFFE INTERNATIONAL, Vol. 103, N° 10 (10/2013)
[article]
Titre : Operating out of sight Type de document : texte imprimé Auteurs : Rolf Heusser, Auteur Année de publication : 2013 Article en page(s) : p. 129-131 Langues : Anglais (eng) Catégories : Buse (tuyère)
Malaxeurs et mélangeurs
Matières plastiques -- Moulage par injection -- Appareils et matériel
MélangeIndex. décimale : 668.4 Plastiques, vinyles Résumé : Mixing nozzles. It is a well-known fact that problems with color streaks in the injection molding process can be rectified through the correct use of static mixers – so-called mixing nozzles. What is less well known is that it is possible to solve a large number of other quality problems in this way, in addition to boosting reliability and reducing production costs. Note de contenu : - Savings on masterbatch costs and increased energy efficiency
- Mixing screw versus static mixer
- Pay attention to cleaning behavior and material qualityPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=20281
in KUNSTSTOFFE INTERNATIONAL > Vol. 103, N° 10 (10/2013) . - p. 129-131[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 15617 - Périodique Bibliothèque principale Documentaires Disponible Optimization of a dynamic mixing system / David Tobler in ADHESION - ADHESIVES + SEALANTS, Vol. 16, N° 1/2019 (2019)
[article]
Titre : Optimization of a dynamic mixing system Type de document : texte imprimé Auteurs : David Tobler, Auteur ; Samira Jafari, Auteur Année de publication : 2019 Article en page(s) : p. 22-24 Langues : Multilingue (mul) Catégories : Adhésifs -- Application-dosage
Malaxeurs et mélangeurs
Mélanges (chimie)Index. décimale : 668.3 Adhésifs et produits semblables Résumé : Novel dynamic mixing system is developed in collaboration between Sika and Sulzer Mixpac to enhance the application quality of viscous adhesives in combination with a booster component. The employed dynamic mixing technology allows for better mixing quality, minimized energy consumption of the dynamic mixer, smaller waste and enhanced application accuracy. The design was further optimized using advanced prediction tools developed specifically for simulation of dynamic mixing. Note de contenu : - Choice of technology: dynamic vs static mixing
- PowerCure design and optimization
- Assessment of mixing in dynamic mixers
- Methodology and algorithm
- Extension of the system
- Fig. 1 : MIniature static mixers in portfolio of Sulzer Mixpac used for mixing of 2C adhesives
- Fig. 2 : Sika PowerCure dynamic mixing and application system
- Fig. 3 : Comparison of the typical mixing pattern for static and dynamic mixing ; dynamic mixing allows multi-directional mixing and dispersion
- Fig. 4 : Typical shear rates encountered in static versus dynamic mixer ; high shear values result in significant decline in components' viscosity and hence the required force and pressure in the dispensing unit
- Fig. 5 : Particles to be tracked backwards in time using unsteady flow field data
- Fig. 6 : Validation of mixing pattern obtained within dynamic mixers compared to measurement at different locations within the mixerPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31946
in ADHESION - ADHESIVES + SEALANTS > Vol. 16, N° 1/2019 (2019) . - p. 22-24[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20679 - Périodique Bibliothèque principale Documentaires Disponible Partially filled flow simulation using meshfree method for high viscosity fluid in plastic mixer / Kazuhide Sekiyama in INTERNATIONAL POLYMER PROCESSING, Vol. XXXIV, N° 2 (05/2019)
[article]
Titre : Partially filled flow simulation using meshfree method for high viscosity fluid in plastic mixer Type de document : texte imprimé Auteurs : Kazuhide Sekiyama, Auteur ; S. Yamada, Auteur ; Takaharu Nakagawa, Auteur ; Yasuharu Nakayama, Auteur ; T. Kajiwara, Auteur Année de publication : 2019 Article en page(s) : p. 279-289 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Etat fondu (matériaux)
Fluides, Mécanique des
Galerkin, Méthode deEn mathématiques, dans le domaine de l'analyse numérique, les méthodes de Galerkine sont une classe de méthodes permettant de transformer un problème continu (par exemple une équation différentielle) en un problème discret. Cette approche est attribuée aux ingénieurs russes Ivan Boubnov (1911) et Boris Galerkine (1913).
Malaxeurs et mélangeurs
Rhéologie
Simulation par ordinateurIndex. décimale : 668.4 Plastiques, vinyles Résumé : A novel simulation technique for the flow in plastic mixers based on Element-free Galerkin Method (EFGM) has been developed in this study. To improve the simulation accuracy, a “rearrangement” scheme has been employed which eliminates errors caused by the irregular distribution of data points. Through several numerical tests, the new simulation technique has been validated to be applicable to high viscosity fluid flow with enough accuracy. Furthermore, simulation examples for realistic mixers were carried out using the developed technique. From the results, it was found that the developed technique is capable to investigate the relationship between flow behavior inside realistic mixers and operating conditions. Note de contenu : - SIMULATION METHOD : Governing equation - Approximation of velocity field based on MLS interpolation - Discretization - Integration method - Time marching method - New "rearrangement" scheme for improving calculation accuracy
- VALIDATION OF DEVELOPED METHOD : Comparison with experiment on rotating cylinder - Comparison with experiment on triangular-shaped rotor
- RESULTS AND DISCUSSION OF FLOW SIMULATION INSIDE REALISTIC MIXERS : Numerical simulation condition - Results and discussionDOI : 10.3139/217.3727 En ligne : https://www.degruyter.com/document/doi/10.3139/217.3727/pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32404
in INTERNATIONAL POLYMER PROCESSING > Vol. XXXIV, N° 2 (05/2019) . - p. 279-289[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 20883 - Périodique Bibliothèque principale Documentaires Disponible Perspectives on the transition from batch to continuous mixing technologies in the compounding industry / J. L. White in INTERNATIONAL POLYMER PROCESSING, Vol. XXV, N° 5 (11/2010)
[article]
Titre : Perspectives on the transition from batch to continuous mixing technologies in the compounding industry Type de document : texte imprimé Auteurs : J. L. White, Auteur ; S. H. Bumm, Auteur Année de publication : 2010 Article en page(s) : p. 322-325 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Ecoulement visqueux
Fluides, Mécanique des
Malaxeurs et mélangeurs
Mélanges (chimie)
PolymèresIndex. décimale : 668.9 Polymères Résumé : During the last quarter of the 20th century, there was a transition from batch to continuous mixing in the polymer and food industries. We present and summarize experimental studies of flows in both internal and continuous mixers. Simulation of flow in these machines is also described. It is argued that the primary reason for this transition was that continuous mixers produce more uniform and better quality mixes, and that this is inherent in their different fluid mechanics. Batch mixers are always starved and largely unpressurized. Their complex fluid mechanics produce non-uniform mixing in the various portions of the compound material. Continuous mixers set up a steady state hydrodynamic flow field generally consisting of alternating regions of pressurized fully filled flow and starved flow. All of the compounds must pass through these regions to reach the die exit and thus possess uniform mixing histories. This uniform deformation history which includes pressurized mixing regions produces superior uniform products. DOI : 10.3139/217.2293 En ligne : https://drive.google.com/file/d/19bAi7f7DGKhQDMpIye_t-RBs2qTCTLN2/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=10249
in INTERNATIONAL POLYMER PROCESSING > Vol. XXV, N° 5 (11/2010) . - p. 322-325[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 012592 - Périodique Bibliothèque principale Documentaires Disponible Plastiques. Préparation des pâtes PVC pour essais. Méthodes utilisant un mélange planétaire - Norme NF EN ISO 4612 / Association Française de Normalisation (Paris) / Saint-Denis La Plaine : Association Française de Normalisation (AFNOR) (1999)
PermalinkPlastiques. Résines de polychlorure de vinyle à usages généraux. Détermination de la prise de plastifiant à chaud - Norme NF T 51-783 / Association Française de Normalisation (Paris) / Saint-Denis La Plaine : Association Française de Normalisation (AFNOR) (1978)
PermalinkPermalinkPrecise bonding of automotive displays / Florian Kampf in ADHESION - ADHESIVES + SEALANTS, Vol. 20, N° 4/2023 (2023)
PermalinkPreparation, adding in and predispersion, first steps for good paint quality in EUROPEAN COATINGS JOURNAL (ECJ), N° 1-2/03 (01-02/2003)
PermalinkProcédés dans un réacteur malaxeur continu / Pierre-Alain Fleury in CAOUTCHOUCS & PLASTIQUES, N° 827 (12/2004)
PermalinkProduction d'une émulsion H/E à base de TiO2 / Luca Pasero in PARFUMS COSMETIQUES ACTUALITES, N° 129 (06-07/1996)
PermalinkPermalinkQuantifying extrusion modification of LDPE with a microcompounder / T. Li in INTERNATIONAL POLYMER PROCESSING, Vol. XXVII, N° 1 (03/2012)
PermalinkRational production with modern dissolvers / Helmut Diddens in EUROPEAN COATINGS JOURNAL (ECJ), N° 1-2/97 (01-02/1997)
PermalinkReduce downtime and secure profitability in INTERNATIONAL SURFACE TECHNOLOGY (IST), Vol. 14, N° 2 (2021)
PermalinkReliable meter-mix performance of manual 2-component application systems / Victor Clemens in ADHESION - ADHESIVES + SEALANTS, Vol. 16, N° 4/2019 (2019)
PermalinkPermalinkRheological and molecular investigations of polyethylene degradation in a batch mixer / E. Twite-Kabamba in INTERNATIONAL POLYMER PROCESSING, Vol. XXV, N° 4 (09/2010)
PermalinkRhéologie des suspensions. Rhéologie à toutes les échelles / Groupe Français de Rhéologie / Groupe Français de Rhéologie (2002)
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