Mechanical Properties of Poly(ethylene-co-methacrylic acid) Reinforced with Carbon Fibers
The capability of poly(ethylene-co-methacrylic acid) (E/MAA) to self-heal is well known, however, its mechanical properties are weak. In this study, composites with single and double layers of unidirectional (UD) carbon fibers were prepared by compression molding. Even a low mass fraction of fibers...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-01-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/13/1/165 |
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| author | Tatjana Haramina Daniel Pugar Darko Ivančević Ivica Smojver |
| author_facet | Tatjana Haramina Daniel Pugar Darko Ivančević Ivica Smojver |
| author_sort | Tatjana Haramina |
| collection | DOAJ |
| description | The capability of poly(ethylene-co-methacrylic acid) (E/MAA) to self-heal is well known, however, its mechanical properties are weak. In this study, composites with single and double layers of unidirectional (UD) carbon fibers were prepared by compression molding. Even a low mass fraction of fibers substantially improved the polymer. The flexural and tensile properties were tested at 0°, 45° and 90° fibers direction and compared to those of the matrix. The mechanical properties in the 0° direction proved superior. Flexural properties depended on the reinforcement distance from the stress neutral plane. The tensile modulus in the 0° direction was 13 times greater despite only a 2.5% mass fraction of fibers. However, both tensile modulus and strength were observed to degrade in the 90° direction. Dynamic mechanical analysis showed the dependence of both structure and properties on the thermal history of E/MAA. Tensile tests after ballistic impact showed that the modulus of the self-healed E/MAA was not affected, yet the strength, yield point, and particularly the elongation at break were reduced. A composite with higher fiber content could be prepared by mixing milled E/MAA particles in fibers prior to compression. |
| first_indexed | 2024-03-10T13:29:02Z |
| format | Article |
| id | doaj.art-6b6dcac7c8b64de4add6d283575ca24b |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T13:29:02Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-6b6dcac7c8b64de4add6d283575ca24b2023-11-21T08:22:06ZengMDPI AGPolymers2073-43602021-01-0113116510.3390/polym13010165Mechanical Properties of Poly(ethylene-co-methacrylic acid) Reinforced with Carbon FibersTatjana Haramina0Daniel Pugar1Darko Ivančević2Ivica Smojver3Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, I. Lučića 5, 10 000 Zagreb, CroatiaFaculty of Mechanical Engineering and Naval Architecture, University of Zagreb, I. Lučića 5, 10 000 Zagreb, CroatiaFaculty of Mechanical Engineering and Naval Architecture, University of Zagreb, I. Lučića 5, 10 000 Zagreb, CroatiaFaculty of Mechanical Engineering and Naval Architecture, University of Zagreb, I. Lučića 5, 10 000 Zagreb, CroatiaThe capability of poly(ethylene-co-methacrylic acid) (E/MAA) to self-heal is well known, however, its mechanical properties are weak. In this study, composites with single and double layers of unidirectional (UD) carbon fibers were prepared by compression molding. Even a low mass fraction of fibers substantially improved the polymer. The flexural and tensile properties were tested at 0°, 45° and 90° fibers direction and compared to those of the matrix. The mechanical properties in the 0° direction proved superior. Flexural properties depended on the reinforcement distance from the stress neutral plane. The tensile modulus in the 0° direction was 13 times greater despite only a 2.5% mass fraction of fibers. However, both tensile modulus and strength were observed to degrade in the 90° direction. Dynamic mechanical analysis showed the dependence of both structure and properties on the thermal history of E/MAA. Tensile tests after ballistic impact showed that the modulus of the self-healed E/MAA was not affected, yet the strength, yield point, and particularly the elongation at break were reduced. A composite with higher fiber content could be prepared by mixing milled E/MAA particles in fibers prior to compression.https://www.mdpi.com/2073-4360/13/1/165E/MAAcompositecarbon fibersmechanical propertiesself-healingdynamic mechanical analysis |
| spellingShingle | Tatjana Haramina Daniel Pugar Darko Ivančević Ivica Smojver Mechanical Properties of Poly(ethylene-co-methacrylic acid) Reinforced with Carbon Fibers Polymers E/MAA composite carbon fibers mechanical properties self-healing dynamic mechanical analysis |
| title | Mechanical Properties of Poly(ethylene-co-methacrylic acid) Reinforced with Carbon Fibers |
| title_full | Mechanical Properties of Poly(ethylene-co-methacrylic acid) Reinforced with Carbon Fibers |
| title_fullStr | Mechanical Properties of Poly(ethylene-co-methacrylic acid) Reinforced with Carbon Fibers |
| title_full_unstemmed | Mechanical Properties of Poly(ethylene-co-methacrylic acid) Reinforced with Carbon Fibers |
| title_short | Mechanical Properties of Poly(ethylene-co-methacrylic acid) Reinforced with Carbon Fibers |
| title_sort | mechanical properties of poly ethylene co methacrylic acid reinforced with carbon fibers |
| topic | E/MAA composite carbon fibers mechanical properties self-healing dynamic mechanical analysis |
| url | https://www.mdpi.com/2073-4360/13/1/165 |
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