Academic Journal
Tribological properties of polyimide composites reinforced with fibers rubbing against Al2O3
| العنوان: | Tribological properties of polyimide composites reinforced with fibers rubbing against Al2O3 |
|---|---|
| المؤلفون: | Huimin Qi, Ga Zhang, Zhiqin Zheng, Jiaxin Yu, Chao Hu |
| المصدر: | Friction, Vol 9, Iss 2, Pp 301-314 (2020) |
| بيانات النشر: | SpringerOpen, 2020. |
| سنة النشر: | 2020 |
| المجموعة: | LCC:Mechanical engineering and machinery |
| مصطلحات موضوعية: | reinforcing filler, polyimide composite, tribofilm, Al2O3, Mechanical engineering and machinery, TJ1-1570 |
| الوصف: | Abstract Reinforcing fillers are of great importance in tribological performance and tribofilm formation of polymeric composites. In this study, the tribological properties of aramid particle (AP) and short carbon fiber (SCF) reinforced polyimide (PI) composites were added to hexagonal boron nitride (h-BN), and silica (SiO2) nanoparticles sliding against alumina were comprehensively investigated. When sliding occurred with AP-reinforced PI composites, the tribological properties were not closely depended on the pressure × velocity (p × ν) factors and the nanoparticles. The interactions between AP and its counterpart could not induce tribo-sintering of the transferred wear debris. As such, the tribofilm seemed to be in a viscous state, leading to higher friction and wear. However, the inclusion of hard SCF into the PI matrix changed the interfacial interactions with alumina. A robust tribofilm consisting of a high fraction of silica was generated when the SCF-reinforced PI was added to the SiO2 nanoparticles. It exhibited a high load-carrying capability and was easily sheared. This caused a significant decrease in the friction and wear of the PI composite at 8 MPa·1m/s. Moreover, due to their high melting point, few h-BN nanoparticles were observed in the tribofilm of the SCF-reinforced PI when hexagonal boron nitride was added. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2223-7690 2223-7704 |
| Relation: | https://doaj.org/toc/2223-7690; https://doaj.org/toc/2223-7704 |
| DOI: | 10.1007/s40544-019-0339-6 |
| URL الوصول: | https://doaj.org/article/1f944bac9e73418288678beb956eea1b |
| رقم الانضمام: | edsdoj.1f944bac9e73418288678beb956eea1b |
| قاعدة البيانات: | Directory of Open Access Journals |
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