Processing Analysis of Nanoparticle Filled PTFE: Restrictions and Limitations of High Temperature Production
In this research work, unfilled and monofilled polytetrafluoroethylene (PTFE) were investigated. The applied fillers were graphene, alumina (Al<sub>2</sub>O<sub>3</sub>), boehmite alumina (BA80) and hydrotalcite (MG70). Graphene and Al<sub>2</sub>O<sub>3<...
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| Format: | Article |
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MDPI AG
2020-09-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/12/9/2044 |
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| author | Levente Ferenc Tóth Patrick De Baets Gábor Szebényi |
| author_facet | Levente Ferenc Tóth Patrick De Baets Gábor Szebényi |
| author_sort | Levente Ferenc Tóth |
| collection | DOAJ |
| description | In this research work, unfilled and monofilled polytetrafluoroethylene (PTFE) were investigated. The applied fillers were graphene, alumina (Al<sub>2</sub>O<sub>3</sub>), boehmite alumina (BA80) and hydrotalcite (MG70). Graphene and Al<sub>2</sub>O<sub>3</sub> are already known in the literature as potential fillers of PTFE, while BA80 and MG70 are novel fillers in PTFE. Materials were produced by room temperature pressing—free sintering method with a maximum sintering temperature of 370 °C. The mass loss and decomposition analyses were carried out by thermogravimetric analysis (TGA) in two different ways. The first was a sensitivity analysis to gain a better view into the sintering process at 370 °C maximal temperature. The second was a heating from 50 °C up to 1000 °C for a full-scale decomposition analysis. BA80 is a suitable filler for PTFE, as most of its functional groups still existed after the sintering process. Both PTFE and Al<sub>2</sub>O<sub>3</sub> had high thermal stability. However, when Al<sub>2</sub>O<sub>3</sub> was incorporated in PTFE, a remarkable mass loss was observed during the sintering process, which indicated that the decomposition of PTFE was catalysed by the Al<sub>2</sub>O<sub>3</sub> filler. The observed mass loss of the Al<sub>2</sub>O<sub>3</sub>-filled PTFE was increased, as the Al<sub>2</sub>O<sub>3</sub> content or the applied dwelling time at a 370 °C sintering temperature increased. |
| first_indexed | 2024-03-10T16:29:49Z |
| format | Article |
| id | doaj.art-947c0af81e264b3a91ed1da9613a5800 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T16:29:49Z |
| publishDate | 2020-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-947c0af81e264b3a91ed1da9613a58002023-11-20T12:56:56ZengMDPI AGPolymers2073-43602020-09-01129204410.3390/polym12092044Processing Analysis of Nanoparticle Filled PTFE: Restrictions and Limitations of High Temperature ProductionLevente Ferenc Tóth0Patrick De Baets1Gábor Szebényi2Soete Laboratory, Department of Electromechanical, Systems and Metal Engineering, Ghent University, Technologiepark Zwijnaarde 46, B-9052 Zwijnaarde, BelgiumSoete Laboratory, Department of Electromechanical, Systems and Metal Engineering, Ghent University, Technologiepark Zwijnaarde 46, B-9052 Zwijnaarde, BelgiumDepartment of Polymer Engineering, Faculty of Mechanical Engineering, Budapest University of Technology and Economics, Műegyetem rkp. 3, H-1111 Budapest, HungaryIn this research work, unfilled and monofilled polytetrafluoroethylene (PTFE) were investigated. The applied fillers were graphene, alumina (Al<sub>2</sub>O<sub>3</sub>), boehmite alumina (BA80) and hydrotalcite (MG70). Graphene and Al<sub>2</sub>O<sub>3</sub> are already known in the literature as potential fillers of PTFE, while BA80 and MG70 are novel fillers in PTFE. Materials were produced by room temperature pressing—free sintering method with a maximum sintering temperature of 370 °C. The mass loss and decomposition analyses were carried out by thermogravimetric analysis (TGA) in two different ways. The first was a sensitivity analysis to gain a better view into the sintering process at 370 °C maximal temperature. The second was a heating from 50 °C up to 1000 °C for a full-scale decomposition analysis. BA80 is a suitable filler for PTFE, as most of its functional groups still existed after the sintering process. Both PTFE and Al<sub>2</sub>O<sub>3</sub> had high thermal stability. However, when Al<sub>2</sub>O<sub>3</sub> was incorporated in PTFE, a remarkable mass loss was observed during the sintering process, which indicated that the decomposition of PTFE was catalysed by the Al<sub>2</sub>O<sub>3</sub> filler. The observed mass loss of the Al<sub>2</sub>O<sub>3</sub>-filled PTFE was increased, as the Al<sub>2</sub>O<sub>3</sub> content or the applied dwelling time at a 370 °C sintering temperature increased.https://www.mdpi.com/2073-4360/12/9/2044nanoparticle-filled PTFEthermal stabilityfree sinteringprocessing analysis |
| spellingShingle | Levente Ferenc Tóth Patrick De Baets Gábor Szebényi Processing Analysis of Nanoparticle Filled PTFE: Restrictions and Limitations of High Temperature Production Polymers nanoparticle-filled PTFE thermal stability free sintering processing analysis |
| title | Processing Analysis of Nanoparticle Filled PTFE: Restrictions and Limitations of High Temperature Production |
| title_full | Processing Analysis of Nanoparticle Filled PTFE: Restrictions and Limitations of High Temperature Production |
| title_fullStr | Processing Analysis of Nanoparticle Filled PTFE: Restrictions and Limitations of High Temperature Production |
| title_full_unstemmed | Processing Analysis of Nanoparticle Filled PTFE: Restrictions and Limitations of High Temperature Production |
| title_short | Processing Analysis of Nanoparticle Filled PTFE: Restrictions and Limitations of High Temperature Production |
| title_sort | processing analysis of nanoparticle filled ptfe restrictions and limitations of high temperature production |
| topic | nanoparticle-filled PTFE thermal stability free sintering processing analysis |
| url | https://www.mdpi.com/2073-4360/12/9/2044 |
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