Thermal and Oxidative Aging Effects of Polyamide-11 Powder Used in Multi-Jet Fusion
The transition of additive manufacturing (AM) from a technique for rapid prototyping to one for manufacturing of near net or net components has been led by the development of methods that can repeatedly fabricate quality parts. High-speed laser sintering and the recently developed multi-jet fusion (...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-05-01
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| Series: | Polymers |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2073-4360/15/10/2395 |
| _version_ | 1797598552534286336 |
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| author | Chrysoula Pandelidi Ryan Blakis Kok Peng Marcian Lee Stuart Bateman Milan Brandt Mladenko Kajtaz |
| author_facet | Chrysoula Pandelidi Ryan Blakis Kok Peng Marcian Lee Stuart Bateman Milan Brandt Mladenko Kajtaz |
| author_sort | Chrysoula Pandelidi |
| collection | DOAJ |
| description | The transition of additive manufacturing (AM) from a technique for rapid prototyping to one for manufacturing of near net or net components has been led by the development of methods that can repeatedly fabricate quality parts. High-speed laser sintering and the recently developed multi-jet fusion (MJF) processes have seen quick adoption from industry due to their ability to produce high-quality components relatively quickly. However, the recommended refresh ratios of new powder led to notable amounts of used powder being discarded. In this research, polyamide-11 powder, typically used in AM, was thermally aged to investigate its properties at extreme levels of reuse. The powder was exposed to 180 °C in air for up to 168 h and its chemical, morphological, thermal, rheological, and mechanical properties were examined. To decouple the thermo-oxidative aging phenomena from AM process related effects, such as porosity, rheological and mechanical properties characterisation was performed on compression-moulded specimens. It was found that exposure notably affected the properties of both the powder and the derived compression-moulded specimens within the first 24 h of exposure; however, consecutive exposure did not have a significant effect. |
| first_indexed | 2024-03-11T03:22:48Z |
| format | Article |
| id | doaj.art-c827ddc6a94944f6ad49757b39238670 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-11T03:22:48Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-c827ddc6a94944f6ad49757b392386702023-11-18T02:59:26ZengMDPI AGPolymers2073-43602023-05-011510239510.3390/polym15102395Thermal and Oxidative Aging Effects of Polyamide-11 Powder Used in Multi-Jet FusionChrysoula Pandelidi0Ryan Blakis1Kok Peng Marcian Lee2Stuart Bateman3Milan Brandt4Mladenko Kajtaz5Centre for Additive Manufacturing, School of Engineering, RMIT University, GPO Box 2476, Melbourne, VIC 3001, AustraliaCentre for Additive Manufacturing, School of Engineering, RMIT University, GPO Box 2476, Melbourne, VIC 3001, AustraliaCentre for Additive Manufacturing, School of Engineering, RMIT University, GPO Box 2476, Melbourne, VIC 3001, AustraliaCentre for Additive Manufacturing, School of Engineering, RMIT University, GPO Box 2476, Melbourne, VIC 3001, AustraliaCentre for Additive Manufacturing, School of Engineering, RMIT University, GPO Box 2476, Melbourne, VIC 3001, AustraliaCentre for Additive Manufacturing, School of Engineering, RMIT University, GPO Box 2476, Melbourne, VIC 3001, AustraliaThe transition of additive manufacturing (AM) from a technique for rapid prototyping to one for manufacturing of near net or net components has been led by the development of methods that can repeatedly fabricate quality parts. High-speed laser sintering and the recently developed multi-jet fusion (MJF) processes have seen quick adoption from industry due to their ability to produce high-quality components relatively quickly. However, the recommended refresh ratios of new powder led to notable amounts of used powder being discarded. In this research, polyamide-11 powder, typically used in AM, was thermally aged to investigate its properties at extreme levels of reuse. The powder was exposed to 180 °C in air for up to 168 h and its chemical, morphological, thermal, rheological, and mechanical properties were examined. To decouple the thermo-oxidative aging phenomena from AM process related effects, such as porosity, rheological and mechanical properties characterisation was performed on compression-moulded specimens. It was found that exposure notably affected the properties of both the powder and the derived compression-moulded specimens within the first 24 h of exposure; however, consecutive exposure did not have a significant effect.https://www.mdpi.com/2073-4360/15/10/2395polyamide-11thermal agingmechanical performancepowder agingpowder bed fusionadditive manufacturing |
| spellingShingle | Chrysoula Pandelidi Ryan Blakis Kok Peng Marcian Lee Stuart Bateman Milan Brandt Mladenko Kajtaz Thermal and Oxidative Aging Effects of Polyamide-11 Powder Used in Multi-Jet Fusion Polymers polyamide-11 thermal aging mechanical performance powder aging powder bed fusion additive manufacturing |
| title | Thermal and Oxidative Aging Effects of Polyamide-11 Powder Used in Multi-Jet Fusion |
| title_full | Thermal and Oxidative Aging Effects of Polyamide-11 Powder Used in Multi-Jet Fusion |
| title_fullStr | Thermal and Oxidative Aging Effects of Polyamide-11 Powder Used in Multi-Jet Fusion |
| title_full_unstemmed | Thermal and Oxidative Aging Effects of Polyamide-11 Powder Used in Multi-Jet Fusion |
| title_short | Thermal and Oxidative Aging Effects of Polyamide-11 Powder Used in Multi-Jet Fusion |
| title_sort | thermal and oxidative aging effects of polyamide 11 powder used in multi jet fusion |
| topic | polyamide-11 thermal aging mechanical performance powder aging powder bed fusion additive manufacturing |
| url | https://www.mdpi.com/2073-4360/15/10/2395 |
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