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| Effect of Surface Synergistic Modification of Carbon Fiber on Mechanical and Tribological Properties of Paper-based Friction Material |
| Received:August 18, 2022 |
| DOI：10.11980/j.issn.0254-508X.2022.11.003 |
| Key Words:carbon fiber paper-based friction material synergistic modification mechanical performance tribological property |
| Fund Project:国家自然科学基金（51872176，52172102）；中央高校基本科研业务费（G2020KY05130）；陕西省杰出青年科学基金（2019JC-32）；陕西省重点研发计划项目（2021ZDLGY14-04）；西北工业大学博士论文创新基金（CX2022031）。 |
| Author Name | Affiliation | Postcode | | MA Shanshan* | School of Materials Science and Engineering, State Key Lab of Solidification Processing, Northwestern Polytechnical University, Xi’an, Shaanxi Province, 710072 | 710072 | | TIAN Haochen | School of Materials Science and Engineering, State Key Lab of Solidification Processing, Northwestern Polytechnical University, Xi’an, Shaanxi Province, 710072 | 710072 | | FEI Jie | School of Materials Science and Engineering, State Key Lab of Solidification Processing, Northwestern Polytechnical University, Xi’an, Shaanxi Province, 710072 | 710072 | | LI Hejun | School of Materials Science and Engineering, State Key Lab of Solidification Processing, Northwestern Polytechnical University, Xi’an, Shaanxi Province, 710072 | 710072 | | HUANG Qiyue | School of Materials Science and Engineering, State Key Lab of Solidification Processing, Northwestern Polytechnical University, Xi’an, Shaanxi Province, 710072 | 710072 |
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| Abstract:The synergistic strategies including dopamine-epoxy-terminated silicone oil and nitric acid-epoxy-terminated silicone oil were employed， respectirely， to modify the carbon fibers in this study. The surface morphology and chemical functional groups of fibers were characterized and compared. The mechanism of chemical synergistic modification was further explored. In addition， the surface microstructure， roughness and pore structure of paper-based friction material were also described. The effect mechanism of synergistic modification on the mechanical and tribological properties of paper-based friction material was further studied. The results showed that the synergistic strategy of nitric acid-epoxy-terminated silicone oil was more conducive to improve mechanical properties and wear resistance of paper-based friction materials.Compared with unmodified paper-based friction material， the tensile and interlaminar shear strength of modified paper-based friction materials were increased by 25.8% and 23.6%， respectively， and wear rate decreased to 0.620×10-8 cm3/J. Compared with dopamine pretreatment， the nitric acid etching process could not only provide more active sites for the subsequent grafting modification of epoxy-based silicone oil， but also increase the chemical crosslink density between carbon fibers and the resin. |
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