The effect of fiber oxidation on the friction and wear behaviors of short-cut carbon fiber/polyimide composites
Pitch-based short-cut carbon fibers were treated by HNO3 oxidation, thereafter the treated (CFN) and untreated carbon fibers (CF) were incorporated into polyimide (PI) matrix to form composites. The carbon fibers before and after treatment were examined by Fourier Transform Infrared Spectroscopy (FT...
| Format: | Article |
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| Language: | English |
| Published: |
Budapest University of Technology
2007-05-01
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| Series: | eXPRESS Polymer Letters |
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| Online Access: | http://www.expresspolymlett.com/letolt.php?file=EPL-0000227&mi=cd |
| _version_ | 1819037901160185856 |
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| collection | DOAJ |
| description | Pitch-based short-cut carbon fibers were treated by HNO3 oxidation, thereafter the treated (CFN) and untreated carbon fibers (CF) were incorporated into polyimide (PI) matrix to form composites. The carbon fibers before and after treatment were examined by Fourier Transform Infrared Spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and scanning electron microscope (SEM). The friction and wear behaviors of PI composites sliding against GCr15 steel rings were evaluated on an M-2000 model ring-on-block test rig, which revealed that small incorporation of carbon fibers can decrease the friction coefficient and improve the wear resistance of PI composites, and that the reinforcement effect of treated carbon fibers was better than that of the untreated ones. It was found that the optimum content of carbon fibers is 15 wt% when a thin and continuous transfer film was formed on the counterpart surface during the friction process. With further increasing content of carbon fibers, the friction coefficient increased and the wear resistance reduced owing to the drop out of carbon fibers from PI matrix. Besides, the friction coefficient of the PI composites decreased and the wear resistance improved with increasing load, while for the pure PI, its wear resistance decreased drastically owing to the micro-melting and mechanical deterioration caused by friction heat under a higher load. |
| first_indexed | 2024-12-21T08:28:46Z |
| format | Article |
| id | doaj.art-91931816c05f4566a8eda0e99c97781f |
| institution | Directory Open Access Journal |
| issn | 1788-618X |
| language | English |
| last_indexed | 2024-12-21T08:28:46Z |
| publishDate | 2007-05-01 |
| publisher | Budapest University of Technology |
| record_format | Article |
| series | eXPRESS Polymer Letters |
| spelling | doaj.art-91931816c05f4566a8eda0e99c97781f2022-12-21T19:10:15ZengBudapest University of TechnologyeXPRESS Polymer Letters1788-618X2007-05-011531832510.3144/expresspolymlett.2007.45The effect of fiber oxidation on the friction and wear behaviors of short-cut carbon fiber/polyimide compositesPitch-based short-cut carbon fibers were treated by HNO3 oxidation, thereafter the treated (CFN) and untreated carbon fibers (CF) were incorporated into polyimide (PI) matrix to form composites. The carbon fibers before and after treatment were examined by Fourier Transform Infrared Spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and scanning electron microscope (SEM). The friction and wear behaviors of PI composites sliding against GCr15 steel rings were evaluated on an M-2000 model ring-on-block test rig, which revealed that small incorporation of carbon fibers can decrease the friction coefficient and improve the wear resistance of PI composites, and that the reinforcement effect of treated carbon fibers was better than that of the untreated ones. It was found that the optimum content of carbon fibers is 15 wt% when a thin and continuous transfer film was formed on the counterpart surface during the friction process. With further increasing content of carbon fibers, the friction coefficient increased and the wear resistance reduced owing to the drop out of carbon fibers from PI matrix. Besides, the friction coefficient of the PI composites decreased and the wear resistance improved with increasing load, while for the pure PI, its wear resistance decreased drastically owing to the micro-melting and mechanical deterioration caused by friction heat under a higher load.http://www.expresspolymlett.com/letolt.php?file=EPL-0000227&mi=cdPolymer compositesreinforcementcarbon fiber surface treatmentfriction and wear |
| spellingShingle | The effect of fiber oxidation on the friction and wear behaviors of short-cut carbon fiber/polyimide composites eXPRESS Polymer Letters Polymer composites reinforcement carbon fiber surface treatment friction and wear |
| title | The effect of fiber oxidation on the friction and wear behaviors of short-cut carbon fiber/polyimide composites |
| title_full | The effect of fiber oxidation on the friction and wear behaviors of short-cut carbon fiber/polyimide composites |
| title_fullStr | The effect of fiber oxidation on the friction and wear behaviors of short-cut carbon fiber/polyimide composites |
| title_full_unstemmed | The effect of fiber oxidation on the friction and wear behaviors of short-cut carbon fiber/polyimide composites |
| title_short | The effect of fiber oxidation on the friction and wear behaviors of short-cut carbon fiber/polyimide composites |
| title_sort | effect of fiber oxidation on the friction and wear behaviors of short cut carbon fiber polyimide composites |
| topic | Polymer composites reinforcement carbon fiber surface treatment friction and wear |
| url | http://www.expresspolymlett.com/letolt.php?file=EPL-0000227&mi=cd |