| Titre : |
Control strategies for reactive extrusion of polypropylene by peroxide degradation - A brief review and an experimental study |
| Type de document : |
texte imprimé |
| Auteurs : |
S. Wolf, Auteur ; Jürgen Miethlinger, Auteur |
| Année de publication : |
2021 |
| Article en page(s) : |
p. 472-498 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Capteurs (technologie)
Contrôle technique
Essais (technologie)
Extrudeuse bi-vis
Extrusion réactive
Formulation (Génie chimique)
Peroxydes
Polypropylène
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
Industry 4.0 and digitalization are widely argued for the future success of numerous industrial solutions. Big data management might lead to the assumption that every issue can be solved numerically without any physical background. To some extent, this strategy will help within the plastics industry in general and in the extrusion technology in particular. However, a deep process knowledge together with process-relevant sensors, as well as the right process arrangements within the processing chain combined with smart data mining methods will be still the key success of industry 4.0. This presentation illustrates, based on a brief review on existing control strategies (Part 1), including sensory and predictive control models for reactive extrusion applied at a real-life on-site best practice project (Part 2), possibilities in combination of process tasks with digitalization approaches for PP-Polymer production. Specifically, rheological research conducted with a novel, patented multi-point rheometer (part 3), will provide a deeper insight into dynamic processes such as reactive extrusion. With those results and derivations thereof, improvements in predictive process control in addition to artificial control systems are made and might even lead to further interesting opportunities. |
| Note de contenu : |
- BRIEF REVIEW ON CONTROL STRATEGIES FOR REACTIVE EXTRUSION (Part 1) : Control strategies : extrusion control - Soft sensors - Reactive extrusion in general - Reactive extrusion process control of peroxide modified pp
- PRACTICAL IMPLEMENTATION OF REACTIVE EXTRUSION CONTROL (PART 2) : Background and problem definition - Theses/proposal for solution - Proof of concept on twin-screw extruder - Smart process engineering and control - Results/validation of the implementation on world-scale production site/adjustable melt quality based on in-line-viscosity measurements
- VALIDATION/PROOF OF HYSTERESIS BEHAVIOR WITH SMART SENSORS (PART 3) : Setup and principal test procedure for lab-scale trials - Extensional rheometer/smart process quality device - Results/effect of peroxide during ramp-up and ramp-down (220 °c) - Results/effect of peroxide during ramp-up and ramp-down (temperature variation) - Discussion
- Table 1 : Literature review based on Garge et al. (2010) of “modelling of reactive extrusion" and “process control of reactive extrusion
- Table 2 : Characteristics of polymer grades (unstabilized powder samples from reactor) for peroxide trials and relevant Russian standards (RussianGOST, 2019)
- Table 3 : Standard process parameters for the trials
- Table 4 : Formulations for evaluating the ramp-up and ramp-down behavior of PP polymer melts; given quantities are weight percent (wt%) of polymer, masterbatch or premix, whereas the active concentration of peroxide is 10% |
| DOI : |
https://doi.org/10.1515/ipp-2020-4088 |
| En ligne : |
https://drive.google.com/file/d/1wDJx2TwgcvJxRJJfcOLY5DGzuum0nuva/view?usp=shari [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36516 |
in INTERNATIONAL POLYMER PROCESSING > Vol. 36, N° 5 (2021) . - p. 472-498
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