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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Li, Nan
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Topics
Publications (11/11 displayed)
- 2024The modified boundary layer mechanism for the release between polyimide film and poly(ether ketone ketone) thermoplasticscitations
- 2024Alloying effects on deformation induced microstructure evolution in coppercitations
- 2022Interface effect of Fe and Fe<sub>2</sub>O<sub>3</sub> on the distributions of ion induced defectscitations
- 2021High temperature nanoindentation of Cu-TiN nanolaminatescitations
- 2019High-Throughput Nanomechanical Screening of Phase-Specific and Temperature-Dependent Hardness in AlxFeCrNiMn High-Entropy Alloyscitations
- 2019One-step polymeric phononic crystal manufacture.
- 2018Oxide Morphology of C26M at 300 - 600 °C
- 2017Oxide Morphology of a FeCrAl Alloy, Kanthal APMT, following Extended Aging at 300-600C
- 2017Mechanical behavior of rare‐earth orthophosphates near the monazite/xenotime boundary characterized by nanoindentationcitations
- 2013Proofreading exonuclease on a tethercitations
- 2013Catalyst composition and impurity-dependent kinetics of nanowire heteroepitaxy.
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article
The modified boundary layer mechanism for the release between polyimide film and poly(ether ketone ketone) thermoplastics
Abstract
Sticking between the thermoplastic polymer and metal tool is a crucial issue, as it determines whether the manufactured part can be ejected from the metal mold. Polyimide (PI) release films have been widely used in the processing of fiber-reinforced thermoplastic polymer composites. Compared with other release mediums such as release agents, PI release film has a higher release efficiency. However, the underlying release mechanism is still not well understood which is essential to improve their performance further and reduce the cost. In this paper, poly(ether ketone ketone) (PEKK) polymer was melted and cooled down between two PI films. The surface morphologies and chemical compositions of the PI film and PEKK were characterized both before and after release using atomic force microscope, x-ray photoelectron spectroscopy, contact angle measurements, and confocal microscopy. It showed that a thin PI layer was transferred from the PI release film to the PEKK surface during the release process. Based on these experimental results, a modified boundary layer mechanism is proposed as a hypothesis to describe the release mechanism of PI films. Our results give a fundamental understanding of how PI film works for the release of thermoplastics with high processing temperatures and may help to improve the performance and reduce the costs of existing PI films and may give guidance to the design of new release media.