The Injected Foaming Study of Polypropylene/Multiwall Carbon Nanotube Composite with In Situ Fibrillation Reinforcement
This paper explored the injection foaming process of in situ fibrillation reinforced polypropylene composites. Using polypropylene (PP) as the continuous phase, polytetrafluoroethylene (PTFE) as the dispersed phase, multi–wall carbon nanotubes (MWCNTs) as the conductive filler, and PP grafted with m...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-12-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/14/24/5411 |
| _version_ | 1797455617242169344 |
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| author | Gang Li Yanpei Fei Tairong Kuang Tong Liu Mingqiang Zhong Yanbiao Li Jing Jiang Lih-Sheng Turng Feng Chen |
| author_facet | Gang Li Yanpei Fei Tairong Kuang Tong Liu Mingqiang Zhong Yanbiao Li Jing Jiang Lih-Sheng Turng Feng Chen |
| author_sort | Gang Li |
| collection | DOAJ |
| description | This paper explored the injection foaming process of in situ fibrillation reinforced polypropylene composites. Using polypropylene (PP) as the continuous phase, polytetrafluoroethylene (PTFE) as the dispersed phase, multi–wall carbon nanotubes (MWCNTs) as the conductive filler, and PP grafted with maleic anhydride (PP–g–MA) as the compatibilizer, a MWCNTs/PP–g–MA masterbatch was prepared by using a solution blending method. Then, a lightweight, conductive PP/PTFE/MWCNTs composite foam was prepared by means of extruder granulation and supercritical nitrogen (ScN<sub>2</sub>) injection foaming. The composite foams were studied in terms of rheology, morphological, foaming behavior and mechanical properties. The results proved that the in situ fibrillation of PTFE can have a remarkable effect on melt strength and viscoelasticity, thus improving the foaming performance; we found that PP/3% PTFE showed excellent performance. Meanwhile, the addition of MWCNTs endows the material with conductive properties, and the conductivity reached was 2.73 × 10<sup>−5</sup> S/m with the addition of 0.2 wt% MWCNTs. This study’s findings are expected to be applied in the lightweight, antistatic and high–performance automotive industry. |
| first_indexed | 2024-03-09T15:56:54Z |
| format | Article |
| id | doaj.art-e220a1e458974fb0bfa951efda798a51 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T15:56:54Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-e220a1e458974fb0bfa951efda798a512023-11-24T17:31:39ZengMDPI AGPolymers2073-43602022-12-011424541110.3390/polym14245411The Injected Foaming Study of Polypropylene/Multiwall Carbon Nanotube Composite with In Situ Fibrillation ReinforcementGang Li0Yanpei Fei1Tairong Kuang2Tong Liu3Mingqiang Zhong4Yanbiao Li5Jing Jiang6Lih-Sheng Turng7Feng Chen8College of Material Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, ChinaCollege of Material Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, ChinaCollege of Material Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, ChinaCollege of Material Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, ChinaCollege of Material Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, ChinaCollege of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310014, ChinaNational Center for International Research of Micro-Nano Molding Technology, School of Mechanics and Safety Engineering, Zhengzhou University, Zhengzhou 450001, ChinaDepartment of Mechanical Engineering, University of Wisconsin–Madison, Madison, WI 53706, USACollege of Material Science and Engineering, Zhejiang University of Technology, Hangzhou 310014, ChinaThis paper explored the injection foaming process of in situ fibrillation reinforced polypropylene composites. Using polypropylene (PP) as the continuous phase, polytetrafluoroethylene (PTFE) as the dispersed phase, multi–wall carbon nanotubes (MWCNTs) as the conductive filler, and PP grafted with maleic anhydride (PP–g–MA) as the compatibilizer, a MWCNTs/PP–g–MA masterbatch was prepared by using a solution blending method. Then, a lightweight, conductive PP/PTFE/MWCNTs composite foam was prepared by means of extruder granulation and supercritical nitrogen (ScN<sub>2</sub>) injection foaming. The composite foams were studied in terms of rheology, morphological, foaming behavior and mechanical properties. The results proved that the in situ fibrillation of PTFE can have a remarkable effect on melt strength and viscoelasticity, thus improving the foaming performance; we found that PP/3% PTFE showed excellent performance. Meanwhile, the addition of MWCNTs endows the material with conductive properties, and the conductivity reached was 2.73 × 10<sup>−5</sup> S/m with the addition of 0.2 wt% MWCNTs. This study’s findings are expected to be applied in the lightweight, antistatic and high–performance automotive industry.https://www.mdpi.com/2073-4360/14/24/5411PTFEPPMWCNTsin situ fibrillationinjection foaming |
| spellingShingle | Gang Li Yanpei Fei Tairong Kuang Tong Liu Mingqiang Zhong Yanbiao Li Jing Jiang Lih-Sheng Turng Feng Chen The Injected Foaming Study of Polypropylene/Multiwall Carbon Nanotube Composite with In Situ Fibrillation Reinforcement Polymers PTFE PP MWCNTs in situ fibrillation injection foaming |
| title | The Injected Foaming Study of Polypropylene/Multiwall Carbon Nanotube Composite with In Situ Fibrillation Reinforcement |
| title_full | The Injected Foaming Study of Polypropylene/Multiwall Carbon Nanotube Composite with In Situ Fibrillation Reinforcement |
| title_fullStr | The Injected Foaming Study of Polypropylene/Multiwall Carbon Nanotube Composite with In Situ Fibrillation Reinforcement |
| title_full_unstemmed | The Injected Foaming Study of Polypropylene/Multiwall Carbon Nanotube Composite with In Situ Fibrillation Reinforcement |
| title_short | The Injected Foaming Study of Polypropylene/Multiwall Carbon Nanotube Composite with In Situ Fibrillation Reinforcement |
| title_sort | injected foaming study of polypropylene multiwall carbon nanotube composite with in situ fibrillation reinforcement |
| topic | PTFE PP MWCNTs in situ fibrillation injection foaming |
| url | https://www.mdpi.com/2073-4360/14/24/5411 |
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