On the relationship of morphology evolution and thermal conductivity of flax reinforced polypropylene laminates
This paper focuses on the morphology evolution in the forming process of unidirectional flax reinforced polypropylene composite laminates. The link between the morphology evolution and thermal conductivity during consolidation stages is investigated. Hot press forming allows to manufacture several c...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-03-01
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| Series: | Frontiers in Materials |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fmats.2023.1150180/full |
| _version_ | 1797865992643149824 |
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| author | Masoud Bodaghi Doriane Delfrari Margot Lucas Noha-Lys Senoussaoui Yao Koutsawa Burcu Karaca Uğural Henri Perrin |
| author_facet | Masoud Bodaghi Doriane Delfrari Margot Lucas Noha-Lys Senoussaoui Yao Koutsawa Burcu Karaca Uğural Henri Perrin |
| author_sort | Masoud Bodaghi |
| collection | DOAJ |
| description | This paper focuses on the morphology evolution in the forming process of unidirectional flax reinforced polypropylene composite laminates. The link between the morphology evolution and thermal conductivity during consolidation stages is investigated. Hot press forming allows to manufacture several composite laminates at different consolidation stages as a function of the compaction thickness. Microscopic evolution of the laminates in terms of morphology and porosity fractions are evaluated by scanning electron microscopy and X-ray microtomography (µ-CT). Hot disk technique is applied to measure the thermal conductivity of the laminates in in-plane and transverse directions. It is found that the in-plane thermal conductivity almost linearly increases with the reduction of porosity fraction. However, the transverse thermal conductivity remained constant. Beside the proposed relations, a theoretical model, based on a two-level Mori-Tanaka homogenization method is proposed. Considering the three-phases material (i.e., porosity, fiber, and polymer matrix), there is a good agreement between the experiment data and model predictions, but limited predictivity for porosity level above 15% certainly due to simplifying assumptions used in the predictive model. |
| first_indexed | 2024-04-09T23:16:56Z |
| format | Article |
| id | doaj.art-e20b8e92887c462d9db5380cded197d3 |
| institution | Directory Open Access Journal |
| issn | 2296-8016 |
| language | English |
| last_indexed | 2024-04-09T23:16:56Z |
| publishDate | 2023-03-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Materials |
| spelling | doaj.art-e20b8e92887c462d9db5380cded197d32023-03-22T06:07:53ZengFrontiers Media S.A.Frontiers in Materials2296-80162023-03-011010.3389/fmats.2023.11501801150180On the relationship of morphology evolution and thermal conductivity of flax reinforced polypropylene laminatesMasoud Bodaghi0Doriane Delfrari1Margot Lucas2Noha-Lys Senoussaoui3Yao Koutsawa4Burcu Karaca Uğural5Henri Perrin6Luxembourg Institute of Science and Technology (LIST), Hautcharage, LuxembourgLuxembourg Institute of Science and Technology (LIST), Hautcharage, LuxembourgLuxembourg Institute of Science and Technology (LIST), Hautcharage, LuxembourgLuxembourg Institute of Science and Technology (LIST), Hautcharage, LuxembourgLuxembourg Institute of Science and Technology (LIST), Hautcharage, LuxembourgHead Office, BPREG, Bornova, Izmir, TürkiyeLuxembourg Institute of Science and Technology (LIST), Hautcharage, LuxembourgThis paper focuses on the morphology evolution in the forming process of unidirectional flax reinforced polypropylene composite laminates. The link between the morphology evolution and thermal conductivity during consolidation stages is investigated. Hot press forming allows to manufacture several composite laminates at different consolidation stages as a function of the compaction thickness. Microscopic evolution of the laminates in terms of morphology and porosity fractions are evaluated by scanning electron microscopy and X-ray microtomography (µ-CT). Hot disk technique is applied to measure the thermal conductivity of the laminates in in-plane and transverse directions. It is found that the in-plane thermal conductivity almost linearly increases with the reduction of porosity fraction. However, the transverse thermal conductivity remained constant. Beside the proposed relations, a theoretical model, based on a two-level Mori-Tanaka homogenization method is proposed. Considering the three-phases material (i.e., porosity, fiber, and polymer matrix), there is a good agreement between the experiment data and model predictions, but limited predictivity for porosity level above 15% certainly due to simplifying assumptions used in the predictive model.https://www.frontiersin.org/articles/10.3389/fmats.2023.1150180/fullthermal conductivityflax fiberhot press formingconsolidationporosity |
| spellingShingle | Masoud Bodaghi Doriane Delfrari Margot Lucas Noha-Lys Senoussaoui Yao Koutsawa Burcu Karaca Uğural Henri Perrin On the relationship of morphology evolution and thermal conductivity of flax reinforced polypropylene laminates Frontiers in Materials thermal conductivity flax fiber hot press forming consolidation porosity |
| title | On the relationship of morphology evolution and thermal conductivity of flax reinforced polypropylene laminates |
| title_full | On the relationship of morphology evolution and thermal conductivity of flax reinforced polypropylene laminates |
| title_fullStr | On the relationship of morphology evolution and thermal conductivity of flax reinforced polypropylene laminates |
| title_full_unstemmed | On the relationship of morphology evolution and thermal conductivity of flax reinforced polypropylene laminates |
| title_short | On the relationship of morphology evolution and thermal conductivity of flax reinforced polypropylene laminates |
| title_sort | on the relationship of morphology evolution and thermal conductivity of flax reinforced polypropylene laminates |
| topic | thermal conductivity flax fiber hot press forming consolidation porosity |
| url | https://www.frontiersin.org/articles/10.3389/fmats.2023.1150180/full |
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