Synergistically assembled RGO/Si3N4 whiskers hybrid aerogels to endow epoxy composites with excellent thermal and tribological performance
Abstract Epoxy resin (EP) composites with satisfactory thermal and tribological performance are highly required for engineering moving components. However, the simple addition of fillers leaded to the serious filler agglomeration and limited promotion in tribological properties. In this work, we con...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-03-01
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| Series: | Friction |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/s40544-022-0722-6 |
| _version_ | 1797740761027969024 |
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| author | Yongjun Zhou Yuanya Zhang Meng Liu Yanling Wang Junya Yuan Xuehu Men |
| author_facet | Yongjun Zhou Yuanya Zhang Meng Liu Yanling Wang Junya Yuan Xuehu Men |
| author_sort | Yongjun Zhou |
| collection | DOAJ |
| description | Abstract Epoxy resin (EP) composites with satisfactory thermal and tribological performance are highly required for engineering moving components. However, the simple addition of fillers leaded to the serious filler agglomeration and limited promotion in tribological properties. In this work, we constructed a new kind of three-dimensional (3D) reduced graphene oxide (RGO)/Si3N4 hybrid aerogel for EP composites, which was prepared by a facile hydrothermal self-assembly method followed by freeze-drying technique. As a result, the dispersibility of Si3N4 whiskers was greatly improved through wrapping of polydopamine—polyethyleneimine copolymer (PDA—PEI) copolymer and physical spacing of 3D skeleton. Furthermore, benefiting from the synergistic effect of RGO and Si3N4@PDA—PEI in the thermal network, the thermal conductivity of RGO/Si3N4 hybrid aerogel (GSiA)—EP increased by 45.4% compared to that of the neat EP. In addition, the friction coefficient and wear rate of GSiA—EP decreased by 83.7% and 35.8%, respectively. This work is significant for opening a tribological performance enhancement strategy though constructing 3D hybrid architecture. |
| first_indexed | 2024-03-12T14:17:02Z |
| format | Article |
| id | doaj.art-fa36a674f26f4709af9258f208001c43 |
| institution | Directory Open Access Journal |
| issn | 2223-7690 2223-7704 |
| language | English |
| last_indexed | 2024-03-12T14:17:02Z |
| publishDate | 2023-03-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Friction |
| spelling | doaj.art-fa36a674f26f4709af9258f208001c432023-08-20T11:21:02ZengSpringerOpenFriction2223-76902223-77042023-03-0111112091210610.1007/s40544-022-0722-6Synergistically assembled RGO/Si3N4 whiskers hybrid aerogels to endow epoxy composites with excellent thermal and tribological performanceYongjun Zhou0Yuanya Zhang1Meng Liu2Yanling Wang3Junya Yuan4Xuehu Men5School of Materials and Energy, Lanzhou UniversitySchool of Materials and Energy, Lanzhou UniversityState Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of SciencesState Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of SciencesState Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of SciencesSchool of Materials and Energy, Lanzhou UniversityAbstract Epoxy resin (EP) composites with satisfactory thermal and tribological performance are highly required for engineering moving components. However, the simple addition of fillers leaded to the serious filler agglomeration and limited promotion in tribological properties. In this work, we constructed a new kind of three-dimensional (3D) reduced graphene oxide (RGO)/Si3N4 hybrid aerogel for EP composites, which was prepared by a facile hydrothermal self-assembly method followed by freeze-drying technique. As a result, the dispersibility of Si3N4 whiskers was greatly improved through wrapping of polydopamine—polyethyleneimine copolymer (PDA—PEI) copolymer and physical spacing of 3D skeleton. Furthermore, benefiting from the synergistic effect of RGO and Si3N4@PDA—PEI in the thermal network, the thermal conductivity of RGO/Si3N4 hybrid aerogel (GSiA)—EP increased by 45.4% compared to that of the neat EP. In addition, the friction coefficient and wear rate of GSiA—EP decreased by 83.7% and 35.8%, respectively. This work is significant for opening a tribological performance enhancement strategy though constructing 3D hybrid architecture.https://doi.org/10.1007/s40544-022-0722-6three-dimensional (3D) hybrid structurereduced graphene oxide (RGO)/Si3N4 hybrid aerogelthermal propertiestribological propertieswear mechanismsynergistic effect |
| spellingShingle | Yongjun Zhou Yuanya Zhang Meng Liu Yanling Wang Junya Yuan Xuehu Men Synergistically assembled RGO/Si3N4 whiskers hybrid aerogels to endow epoxy composites with excellent thermal and tribological performance Friction three-dimensional (3D) hybrid structure reduced graphene oxide (RGO)/Si3N4 hybrid aerogel thermal properties tribological properties wear mechanism synergistic effect |
| title | Synergistically assembled RGO/Si3N4 whiskers hybrid aerogels to endow epoxy composites with excellent thermal and tribological performance |
| title_full | Synergistically assembled RGO/Si3N4 whiskers hybrid aerogels to endow epoxy composites with excellent thermal and tribological performance |
| title_fullStr | Synergistically assembled RGO/Si3N4 whiskers hybrid aerogels to endow epoxy composites with excellent thermal and tribological performance |
| title_full_unstemmed | Synergistically assembled RGO/Si3N4 whiskers hybrid aerogels to endow epoxy composites with excellent thermal and tribological performance |
| title_short | Synergistically assembled RGO/Si3N4 whiskers hybrid aerogels to endow epoxy composites with excellent thermal and tribological performance |
| title_sort | synergistically assembled rgo si3n4 whiskers hybrid aerogels to endow epoxy composites with excellent thermal and tribological performance |
| topic | three-dimensional (3D) hybrid structure reduced graphene oxide (RGO)/Si3N4 hybrid aerogel thermal properties tribological properties wear mechanism synergistic effect |
| url | https://doi.org/10.1007/s40544-022-0722-6 |
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