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Investing the thixotropic and shear recovery behavior of paints and coatings / Fabian Meyer in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 204, N° 4598 (07/2014)
[article]
Titre : Investing the thixotropic and shear recovery behavior of paints and coatings Type de document : texte imprimé Auteurs : Fabian Meyer, Auteur Année de publication : 2014 Article en page(s) : p. 26-29 Langues : Anglais (eng) Catégories : Laboratoires -- Appareils et matériel
Revêtements:Peinture
Rhéologie
Rhéomètres
Rhéométrie
Thixotropie
ViscosimétrieIndex. décimale : 667.9 Revêtements et enduits Résumé : Measuring the thixotropic behaviour is an important method to evaluate the performance and applicability of paints and coatings. The HAAKE viscotester iS is a modern quality control rheometer that goes beyond the capabilities of standard viscometers. In addition to common thixotropic loop experiments, the HAAKE Viscotester iQ with its ability of conducting measurements in CS mode, allows for a more accurate and comprehensive material characterisation. This includes shear recovery experiments to investigate the application and processing behaviour of complex paint formulations. En ligne : https://drive.google.com/file/d/1Z0bz6k1wSR0sEqUgi--C8p-1bvFWEiby/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21747
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 204, N° 4598 (07/2014) . - p. 26-29[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 16428 - Périodique Bibliothèque principale Documentaires Disponible
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Titre : Keeps its cool : Study of the resistance of glass-fiber-reinforced polyamides to coolants Type de document : texte imprimé Auteurs : Johannes Heyn, Auteur ; Christian Bonten, Auteur Année de publication : 2016 Article en page(s) : p. 54-57 Langues : Anglais (eng) Catégories : Composites à fibres de verre
Détection de dommages (matériaux)
Fluides frigorigènes
Polyamide 66
Polymères -- Propriétés thermiques
Rhéométrie
SolvolyseIndex. décimale : 668.4 Plastiques, vinyles Résumé : Applications under the hood in the automotive industry are characterized by strong temperature fluctuations and involve various media, such as coolants. Although metals are highly capable of coping with these conditions, engineering plastics find them challenging. An enhanced measurement methodology has been developed for the early detection of damage resulting from contact between coolant and glass-fiber-reinforced polyamide 66. Note de contenu : - Long-term effects of coolants and their conditions
- Component damage due to solvolysis
- Test specimen treatment and varying conditioning regimes
- Early insights through rheometryEn ligne : https://drive.google.com/file/d/1Z-mHVFdLkqJc33tjYJ0FmFjxf8pWyRL1/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27521
in KUNSTSTOFFE INTERNATIONAL > Vol. 106, N° 11 (11/2016) . - p. 54-57[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 18493 - Périodique Bibliothèque principale Documentaires Disponible Mold filling simulation dependence on material data input for injection molding process of natural rubber compound / T. H. Khang in INTERNATIONAL POLYMER PROCESSING, Vol. XXIX, N° 3 (07/2014)
[article]
Titre : Mold filling simulation dependence on material data input for injection molding process of natural rubber compound Type de document : texte imprimé Auteurs : T. H. Khang, Auteur ; Zulkifli Mohammed Ariff, Auteur Année de publication : 2014 Article en page(s) : p. 325-331 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caoutchouc
Elastomères thermoplastiques -- Moulage par injection
Logiciels
RhéométrieIndex. décimale : 668.4 Plastiques, vinyles Résumé : The influence of material data input towards the mold filling behavior of a natural rubber compound during an injection molding process was investigated. A commercial injection molding software (Cadmould) was utilized in evaluating the effect of using experimentally obtained material data on the mold filling progression in comparison to the actual injection molding procedure. The experimental rheological data were measured using a capillary rheometer and subsequently, the Carreau and Cross models were used to acquire the rheological parameters by curve fitting and extrapolation procedures. The cure kinetics data were obtained by employing a cure rheometer technique along with utilization of empirical approach through application of mathematical models proposed by Claxton–Liska and Deng–Isayev. It was discovered that the acquired data were able to function as reliable material data input as they were comparable with related data available in the software materials' database. Verification of the simulated filling profiles by experimental short shots specimens showed that the software Rubber Package was able to predict the realistic filling behavior of the formulated natural rubber compound inside the mold cavity when the measured material data were utilized. Whereas, the usage of available material data from the software database failed to model the mold filling progression of the prepared natural rubber compound. DOI : 10.3139/217.2934 En ligne : https://drive.google.com/file/d/1KkEC4lUA5fYiDjabFnfz2kp3syTgwB-c/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21729
in INTERNATIONAL POLYMER PROCESSING > Vol. XXIX, N° 3 (07/2014) . - p. 325-331[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 16404 - 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)
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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 Novel in-line rheology measurement technology / Thomas Machin in GLOBAL PERSONAL CARE, Vol. 22, N° 10 (11/2021)
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Titre : Novel in-line rheology measurement technology Type de document : texte imprimé Auteurs : Thomas Machin, Auteur Année de publication : 2021 Article en page(s) : p. 56-58 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cosmétiques
Rhéologie -- Appareils et matériels
RhéométrieIndex. décimale : 532.05 Mécanique des fluides et des liquides - Dynamique (cinétique et cinématique) Résumé : Rheology is defined as the study of the deformation and flow of matter.1 The rheology of a fluid system governs both in-process efficiency and final product quality. It is therefore critical to the manufacturing of liquid personal care products, such as shampoo and liquid soap.
For example, if a product is too thick, problems may arise with pumping and packaging; too thin, and it may run straight through the consumer’s hands. Getting the rheology just right can be challenging from a manufacturing perspective, but is central to the product’s success
In the manufacture of these products, conventional rheometry testing typically takes place off-line, with sampling required from the process stream. This can take approximately ten minutes (depending on the number of measurement points required), not including the time needed to obtain the sample, send it to a QC lab and conduct internal checks.
Once analysed, if the product does not meet specifications, it often has to be scrapped or re-worked, resulting in large volumes of waste being generated, or excess energy being consumed. It has been estimated, that the annual product loss in liquid personal care products globally is the equivalent to two million bath tubs (around 320 million litres). A large part of this could be reduced through the use of in-line rheology measurements.
The rheological properties from off-line measurements are often also considered, with assumptions, as directly applicable to real process flows. However, this approach only provides a retrospective characterisation of a fluid sample and the measurement does not account for any changes to the sample when extracted from a process, such as cooling down and gelling or settling. It is often therefore considered unsatisfactory.
As in situ measurements are conducted within the flow environment, they deliver a direct, real-time rheology measurement, which provides essential, accurate information to plant managers and QC professionals about the product as it is being processed. Due to the critical nature of rheology in processing liquid personal care products, the ability to monitor rheology in-line, in real time could elevate rheometry from a QC tool at the process end-point to one which is able to control and optimise processes and material structures.
To realise this goal, Machin et al. developed a novel, in-pipe, tomographic measurement capable of obtaining real-time rheological information of process fluids within pipe flows.2 This is termed electrical resistance rheometry (ERR). Its ability to predict rheological parameters was validated at the industrial pilot plant of a multinational manufacturer.
The trial focussed upon the characterisation of a wide range of industrial personal and homecare products, including shampoos, fabric washes, conditioner and body washes. The aims were to compare rheological parameters obtained from ERR directly with off-line rotational rheometry and to determine its suitability to operate as an in-line quality control technique.En ligne : https://drive.google.com/file/d/1m_RvvO5WLUyrfixS2BhxScphm5GRyQnl/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36928
in GLOBAL PERSONAL CARE > Vol. 22, N° 10 (11/2021) . - p. 56-58[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22994 - Périodique Bibliothèque principale Documentaires Disponible Numerical investigation of pressure drop within isothermal capillary rheometry for viscous and viscoelastic fluids / Huan-Chang Tseng in INTERNATIONAL POLYMER PROCESSING, Vol. 38, N° 4 (2023)
PermalinkNumerical simulation of the injection blow molding single stage process : shaping of two different geometries and comparison with experimental thickness measurements / Jordan Biglione in INTERNATIONAL POLYMER PROCESSING, Vol. XXXI, N° 4 (08/2016)
PermalinkOn the pressure dependency of the Bagley correction / Peter Van Puyvelde in INTERNATIONAL POLYMER PROCESSING, Vol. XXVIII, N° 5 (11/2013)
PermalinkPeculiar capillary rheometry results associated with compressibility like effects / Jean L. Leblanc in LES CAHIERS DE RHEOLOGIE, Vol. XVII, N° 1 (10/2000)
PermalinkPropriétés rhéologiques d'amidons modifiés / I. Dubois in LES CAHIERS DE RHEOLOGIE, Vol. XVI, N° 1 (10/1998)
PermalinkLe réarrangement, un modèle permettant d'expliquer les différences de compacité et des propriétés rhéométriques des suspensions floculées / S. Ducerf in LES CAHIERS DE RHEOLOGIE, Vol. XIV, N° 1 (09/1995)
PermalinkRheological behaviour of alkali solubilized collagen from limed bovine split wastes / Chen Yihui in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 97, N° 5 (09-10/2013)
PermalinkRheological investigations in coating formulation / Alexey V. Kostitsyn in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 205, N° 4615 (12/2015)
PermalinkRheological studies of automotive putty filler and correlation with their performance characteristics / Dhrubjyoti Kumar in PAINTINDIA, Vol. LXIII, N° 10 (10/2013)
PermalinkRhéologie des fluides complexes / DEPEGEC (I.U.T. - Le Montet; Villers les Nancy cedex) / Villers les Nancy cedex : DEPEGEC (n.d.)
PermalinkRhéologie des suspensions. Rhéologie à toutes les échelles / Groupe Français de Rhéologie / Groupe Français de Rhéologie (2002)
PermalinkRheology and processing of tetrafluoroethylene/hexafluoropropylene copolymers in INTERNATIONAL POLYMER PROCESSING, Vol. XXVII, N° 2 (05/2012)
PermalinkRheology / John A. Clayton in EUROPEAN COATINGS JOURNAL (ECJ), N° 11/99 (11/1999)
PermalinkRhéométrie dans les métiers de formluation. Application dans le domaine des cosmétiques / Jean-François Tranchant in LES CAHIERS DE RHEOLOGIE, Vol. XVI, N° 1 (10/1998)
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