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Polycarbonate as an Elasto-Plastic Material Model for Simulation of the Microstructure Hot Imprint Process

The thermal imprint process of polymer micro-patterning is widely applied in areas such as manufacturing of optical parts, solar energy, bio-mechanical devices and chemical chips. Polycarbonate (PC), as an amorphous polymer, is often used in thermoforming processes because of its good replication ch...

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Autores principales: Narijauskaitė, Birutė, Palevičius, Arvydas, Gaidys, Rimvydas, Janušas, Giedrius, Šakalys, Rokas
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3821338/
https://www.ncbi.nlm.nih.gov/pubmed/23974153
http://dx.doi.org/10.3390/s130911229
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author Narijauskaitė, Birutė
Palevičius, Arvydas
Gaidys, Rimvydas
Janušas, Giedrius
Šakalys, Rokas
author_facet Narijauskaitė, Birutė
Palevičius, Arvydas
Gaidys, Rimvydas
Janušas, Giedrius
Šakalys, Rokas
author_sort Narijauskaitė, Birutė
collection PubMed
description The thermal imprint process of polymer micro-patterning is widely applied in areas such as manufacturing of optical parts, solar energy, bio-mechanical devices and chemical chips. Polycarbonate (PC), as an amorphous polymer, is often used in thermoforming processes because of its good replication characteristics. In order to obtain replicas of the best quality, the imprint parameters (e.g., pressure, temperature, time, etc.) must be determined. Therefore finite element model of the hot imprint process of lamellar periodical microstructure into PC has been created using COMSOL Multiphysics. The mathematical model of the hot imprint process includes three steps: heating, imprinting and demolding. The material properties of amorphous PC strongly depend on the imprint temperature and loading pressure. Polycarbonate was modelled as an elasto-plastic material, since it was analyzed below the glass transition temperature. The hot imprint model was solved using the heat transfer and the solid stress-strain application modes with thermal contact problem between the mold and polycarbonate. It was used for the evaluation of temperature and stress distributions in the polycarbonate during the hot imprint process. The quality of the replica, by means of lands filling ratio, was determined as well.
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spelling pubmed-38213382013-11-09 Polycarbonate as an Elasto-Plastic Material Model for Simulation of the Microstructure Hot Imprint Process Narijauskaitė, Birutė Palevičius, Arvydas Gaidys, Rimvydas Janušas, Giedrius Šakalys, Rokas Sensors (Basel) Article The thermal imprint process of polymer micro-patterning is widely applied in areas such as manufacturing of optical parts, solar energy, bio-mechanical devices and chemical chips. Polycarbonate (PC), as an amorphous polymer, is often used in thermoforming processes because of its good replication characteristics. In order to obtain replicas of the best quality, the imprint parameters (e.g., pressure, temperature, time, etc.) must be determined. Therefore finite element model of the hot imprint process of lamellar periodical microstructure into PC has been created using COMSOL Multiphysics. The mathematical model of the hot imprint process includes three steps: heating, imprinting and demolding. The material properties of amorphous PC strongly depend on the imprint temperature and loading pressure. Polycarbonate was modelled as an elasto-plastic material, since it was analyzed below the glass transition temperature. The hot imprint model was solved using the heat transfer and the solid stress-strain application modes with thermal contact problem between the mold and polycarbonate. It was used for the evaluation of temperature and stress distributions in the polycarbonate during the hot imprint process. The quality of the replica, by means of lands filling ratio, was determined as well. MDPI 2013-08-22 /pmc/articles/PMC3821338/ /pubmed/23974153 http://dx.doi.org/10.3390/s130911229 Text en © 2013 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
spellingShingle Article
Narijauskaitė, Birutė
Palevičius, Arvydas
Gaidys, Rimvydas
Janušas, Giedrius
Šakalys, Rokas
Polycarbonate as an Elasto-Plastic Material Model for Simulation of the Microstructure Hot Imprint Process
title Polycarbonate as an Elasto-Plastic Material Model for Simulation of the Microstructure Hot Imprint Process
title_full Polycarbonate as an Elasto-Plastic Material Model for Simulation of the Microstructure Hot Imprint Process
title_fullStr Polycarbonate as an Elasto-Plastic Material Model for Simulation of the Microstructure Hot Imprint Process
title_full_unstemmed Polycarbonate as an Elasto-Plastic Material Model for Simulation of the Microstructure Hot Imprint Process
title_short Polycarbonate as an Elasto-Plastic Material Model for Simulation of the Microstructure Hot Imprint Process
title_sort polycarbonate as an elasto-plastic material model for simulation of the microstructure hot imprint process
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3821338/
https://www.ncbi.nlm.nih.gov/pubmed/23974153
http://dx.doi.org/10.3390/s130911229
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