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| Study on Carbon Paper Modifying with Fluorinated Mesophase Pitch |
| Received:December 30, 2020 |
| DOI：10.11980/j.issn.0254-508X.2021.05.007 |
| Key Words:carbon paper hydrophobic modification fluorinated pitch |
| Fund Project:国家重点研发计划项目（编号：2017YFB0308200）。 |
| Author Name | Affiliation | Postcode | | LI Mengjia | School of Materials Science and Engineering,Tiangong University, Tianjin, 300387 | 300387 | | MA Wenjun | School of Materials Science and Engineering,Tiangong University, Tianjin, 300387 | 300387 | | HUA Feiguo | Zhejiang Jinchang Special Paper Co., Ltd., Quzhou, Zhejiang Province, 324400 | 324400 | | XU Yue | China National Pulp and Paper Research Institute Co., Ltd., Beijing, 100102 | 100102 | | LI Qiqi | School of Materials Science and Engineering,Tiangong University, Tianjin, 300387 | 300387 | | MA Chang | School of Materials Science and Engineering,Tiangong University, Tianjin, 300387 | 300387 | | TONG Shuhua | Zhejiang Jinchang Special Paper Co., Ltd., Quzhou, Zhejiang Province, 324400 | 324400 | | SHI Jingli | School of Materials Science and Engineering,Tiangong University, Tianjin, 300387 | 300387 |
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| Abstract:Using fluorinated mesophase pitch as additive， the carbon paper was hydrophobically modified by impregnation on vapor deposition process. The effects of two fluorinated mesophase pitch loading processes and loading amount on the microscopic morphology， thickness， apparent density， electrical conductivity and hydrophobic properties of carbon paper were investigated. The results showed that the modified carbon paper by impregnation had better hydrophobic properties than that by vapor deposition， and the corresponding property parameters were also changed. As the loading of fluorinated mesophase pitch increased， the thickness of the carbon paper increased， the apparent density decreased， the resistivity increased， and the contact angle increased. When the loading of fluorinated mesophase pitch was 10 wt%， the resistivity of the carbon paper obtained by impregnation was 5.6 mΩ·cm， with contact angle of 139°， which met the requirements of the gas diffusion layer in fuel cells. |
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