| ZHONG Li,WU Lin-qun,CHEN Meng-qing.Research on Coupling Mechanism of Resin-based Friction Materials[J],48(2):159-165 |
| Research on Coupling Mechanism of Resin-based Friction Materials |
| Received:May 11, 2018 Revised:February 20, 2019 |
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| DOI：10.16490/j.cnki.issn.1001-3660.2019.02.023 |
| KeyWord:hybrid fiber friction materials coupling mechanism heat decline wear resistance wear mechanism |
| Author | Institution |
| ZHONG Li |
School of Mechatronics & Vehicle Engineering, Chongqing Jiaotong University, Chongqing , China |
| WU Lin-qun |
School of Mechatronics & Vehicle Engineering, Chongqing Jiaotong University, Chongqing , China |
| CHEN Meng-qing |
School of Mechatronics & Vehicle Engineering, Chongqing Jiaotong University, Chongqing , China |
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| Abstract: |
| The work aims to improve the mechanical properties and friction and wear properties of resin-based friction ma-terials. The composite fiber reinforced material was prepared by the synergistic effect of fiber. The influence of the hybrid fiber on the properties of the friction material was investigated by orthogonal experimental method. The microstructure of the wear surface and debris was analyzed by scanning electron microscope, and the element formation was analyzed by the energy spectrum to explore the coupling mechanism of the friction material. With the increase of the mixed fiber content from 8% to 10.5%, the Rockwell hardness and shear strength of the friction materials were maintained in the suitable range of 50~75 HRB and 11.5~16.5 MPa. The S3 specimens had the highest hardness (71HRB) and the S4 specimens had the best shear strength (16.1 MPa). The cross coupling effect of the hybrid fibers determined the mechanical properties of the friction materials. Carbon fiber formed a transfer film on the contact surface, which played a role of lubricating and cooling. The friction coefficient and wear rate of the friction material were affected significantly. The formation of transfer membrane can effectively alleviate the phenomenon of heat recession. The suitable content of the hybrid fiber can make the friction surface form a continuous transfer film and the fine particle size can improve the self cleaning of the transfer film, thus reducing the wear rate of the friction material. The wear mechanism also changes from abrasive wear and adhesive wear to various mechanisms of wear. |
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