Graphite Modified Polylactide (PLA) for 3D Printed (FDM/FFF) Sliding Elements
With the development of 3D printing technology, there is a need to produce printable materials with improved properties, e.g., sliding properties. In this paper, the authors present the possibilities of producing composites based on biodegradable PLA with the addition of graphite. The team created c...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-05-01
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| Series: | Polymers |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4360/12/6/1250 |
| _version_ | 1797566643971293184 |
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| author | Robert E. Przekop Maciej Kujawa Wojciech Pawlak Marta Dobrosielska Bogna Sztorch Wojciech Wieleba |
| author_facet | Robert E. Przekop Maciej Kujawa Wojciech Pawlak Marta Dobrosielska Bogna Sztorch Wojciech Wieleba |
| author_sort | Robert E. Przekop |
| collection | DOAJ |
| description | With the development of 3D printing technology, there is a need to produce printable materials with improved properties, e.g., sliding properties. In this paper, the authors present the possibilities of producing composites based on biodegradable PLA with the addition of graphite. The team created composites with the following graphite weight contents: 1%, 2.5%, 5%, 7.5%, and 10%. Neat material was also subjected to testing. Tribological, mechanical, and chemical properties of the mentioned materials were examined. Measurements were also made after keeping the samples in ageing and climatic ovens. Furthermore, SEM observations of samples before and after friction tests were carried out. It was demonstrated that increasing graphite content caused a significant decrease in wear (PLA + 10% graphite had a wear rate three times lower than for a neat material). The addition of graphite did not adversely affect most of the other properties, but it ought to be noted that mechanical properties changed significantly. After conditioning in a climatic oven PLA + 10% graphite has (in comparison with neat material) 11% lower fracture stress, 47% lower impact strength, and 21% higher Young’s modulus. It can be certainly stated that the addition of graphite to PLA is a step towards obtaining a material that is low-cost and suitable for printing sliding spare parts. |
| first_indexed | 2024-03-10T19:29:21Z |
| format | Article |
| id | doaj.art-186e907acc44440085e8523b7bfe3ff7 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T19:29:21Z |
| publishDate | 2020-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-186e907acc44440085e8523b7bfe3ff72023-11-20T02:14:13ZengMDPI AGPolymers2073-43602020-05-01126125010.3390/polym12061250Graphite Modified Polylactide (PLA) for 3D Printed (FDM/FFF) Sliding ElementsRobert E. Przekop0Maciej Kujawa1Wojciech Pawlak2Marta Dobrosielska3Bogna Sztorch4Wojciech Wieleba5Centre for Advanced Technologies, Adam Mickiewicz University Poznan, 61-614 Poznań, PolandFaculty of Mechanical Engineering, Wroclaw University of Science and Technology, 50-370 Wrocław, PolandFaculty of Mechanical Engineering, Wroclaw University of Science and Technology, 50-370 Wrocław, PolandFaculty of Materials Science and Engineering, Warsaw University of Technology, 00-661 Warsaw, PolandCentre for Advanced Technologies, Adam Mickiewicz University Poznan, 61-614 Poznań, PolandFaculty of Mechanical Engineering, Wroclaw University of Science and Technology, 50-370 Wrocław, PolandWith the development of 3D printing technology, there is a need to produce printable materials with improved properties, e.g., sliding properties. In this paper, the authors present the possibilities of producing composites based on biodegradable PLA with the addition of graphite. The team created composites with the following graphite weight contents: 1%, 2.5%, 5%, 7.5%, and 10%. Neat material was also subjected to testing. Tribological, mechanical, and chemical properties of the mentioned materials were examined. Measurements were also made after keeping the samples in ageing and climatic ovens. Furthermore, SEM observations of samples before and after friction tests were carried out. It was demonstrated that increasing graphite content caused a significant decrease in wear (PLA + 10% graphite had a wear rate three times lower than for a neat material). The addition of graphite did not adversely affect most of the other properties, but it ought to be noted that mechanical properties changed significantly. After conditioning in a climatic oven PLA + 10% graphite has (in comparison with neat material) 11% lower fracture stress, 47% lower impact strength, and 21% higher Young’s modulus. It can be certainly stated that the addition of graphite to PLA is a step towards obtaining a material that is low-cost and suitable for printing sliding spare parts.https://www.mdpi.com/2073-4360/12/6/1250PLAadditivesmodifiersfrictionwearproperties |
| spellingShingle | Robert E. Przekop Maciej Kujawa Wojciech Pawlak Marta Dobrosielska Bogna Sztorch Wojciech Wieleba Graphite Modified Polylactide (PLA) for 3D Printed (FDM/FFF) Sliding Elements Polymers PLA additives modifiers friction wear properties |
| title | Graphite Modified Polylactide (PLA) for 3D Printed (FDM/FFF) Sliding Elements |
| title_full | Graphite Modified Polylactide (PLA) for 3D Printed (FDM/FFF) Sliding Elements |
| title_fullStr | Graphite Modified Polylactide (PLA) for 3D Printed (FDM/FFF) Sliding Elements |
| title_full_unstemmed | Graphite Modified Polylactide (PLA) for 3D Printed (FDM/FFF) Sliding Elements |
| title_short | Graphite Modified Polylactide (PLA) for 3D Printed (FDM/FFF) Sliding Elements |
| title_sort | graphite modified polylactide pla for 3d printed fdm fff sliding elements |
| topic | PLA additives modifiers friction wear properties |
| url | https://www.mdpi.com/2073-4360/12/6/1250 |
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