| Titre : |
Evaluation of thermal contact resistance of molten resin–mold interface during high-thermal-conductivity polyphenylene sulfide filling in injection molding |
| Type de document : |
texte imprimé |
| Auteurs : |
Akifumi Kurita, Auteur ; Yohei Yoshimura, Auteur ; Makoto Suzuki, Auteur ; Hidetoshi Yokoi, Auteur ; Yusuke Kajihara, Auteur |
| Année de publication : |
2024 |
| Article en page(s) : |
p. 242-259 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Interfaces (Sciences physiques)
Interfaces solide-liquide
Matières plastiques -- Moulage par injection
Polysulfures de phénylène
Thermocinétique
|
| Index. décimale : |
668.4 Plastiques, vinyles |
| Résumé : |
High-thermal-conductivity polyphenylene sulfide (PPS) has both mechanical and heat dissipation properties, and its low weight and fuel efficiency make it a suitable replacement for metals in automobiles. However, this resin often causes filling defects in the injection molding process. This is due to the higher thermal conductivity, which causes the molten resin to solidify more quickly during the filling process. Therefore, it is important to predict the cooling and filling behaviors of the resin accurately using computer-aided engineering (CAE). Currently, many commercial software programs use thermal contact resistance (TCR) as the thermal boundary condition between the mold and resin. However, there is no established method to accurately evaluate TCR during filling with high spatial resolution and response, and the accuracy of CAE cannot be maintained. Therefore, we used thermography and a prismatic glass insert mold to thermally visualize and analyze the filling process of this resin. Consequently, we succeeded in evaluating TCR values with high spatial resolution and response. The obtained TCR values varied depending on the flow state and pressure. To further validate the obtained TCR values, we compared “the visualization results of real flow conditions” and “the flow prediction results of CAE considering the obtained TCR values”. |
| Note de contenu : |
- MATHEMATICAL MODEL OF HEAT TRANSFER AND TCR EVALUATION METHOD
- EXPERIMENTAL METHOD : Experimental method - In-process temperature distribution visualization system - Cavity shape, material, and molding conditions in TCR measurement experiments - Simulation of TCR measurements
- EXPERIMENTAL RESULTS AND DISCUSSION OF TCR MEASUREMENT : Simulation results of TCR measurements - Visualization analysis of temperature distribution and evaluation results of TCR
- VISUALIZATION ANALYSISI AND CAE OF FILLING BEHABIOR : Cavity shape, material, and molding conditions for partial thin-walled filling behavior tests - Results and discussion of visualization analysis of filling behavior of high-thermal-conductivity PPS - Results and discussion of CAE prediction of filling behaviour
- SUMMARY AND FUTURE SCOPE
- APPENDIX A : PHYSICAL PROPERTIES OF RESINS USED IN CAE |
| DOI : |
https://doi.org/10.1515/ipp-2023-4448 |
| En ligne : |
https://drive.google.com/file/d/152EnzAiJiBqS1C4mB_b7zhUBwk61AQrD/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40867 |
in INTERNATIONAL POLYMER PROCESSING > Vol. 39, N° 2 (2024) . - p. 242-259
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Evaluation of thermal contact resistance of molten resin–mold interface during high-thermal-conductivity polyphenylene sulfide filling in injection molding in INTERNATIONAL POLYMER PROCESSING, Vol. 39, N° 2 (2024)
