Irradiation Properties of Low Surface Energy Fluorocarbon Polymer and Coating
FENG Kai1, HUO Lixia1, SUN Fanxin2, GUO Fangjun1, WANG Shiwei1, GOU Shining1, ZHOU Hui1, GAO Hong3,*, ZHANG Kaifeng1,*
1 National Key Laboratory on Vacuum Technology and Physics, Lanzhou Institute of Physics, Lanzhou 730000, China 2 Beijing Institute of Spacecraft System Engineering, Beijing 100094, China 3 China Academy of Space Technology, Beijing 100094, China
Abstract: Low surface energy fluorocarbon polymer and coating is a key material to prevent the diffusion and migration of space grease lubricants effectively, which can provide an important guarantee for space high-precision long-life grease lubrication moving mechanism and major enginee-ring tasks/systems to operate stably and reliably. Electron irradiation test of fluorocarbon polymer was carried out by vacuum irradiation test system. Contact angle and surface energy of fluorocarbon polymer coating on different metal substrates pre- and post-irradiation were studied. The alterations in thermal decomposition temperature, functional groups, elemental chemical states, and chemical bonds were examined pre- and post-irradiation. The results showed that the surface energy of the polymer coating just increased by 1 mN/m after irradiation with 3.5×105 rad(Si) electrons compared with that pre-irradiation. As the irradiation dose increased to 9×106 rad(Si) and 1.8×107 rad(Si), the change of surface energy was not obvious and tended to be stable. The TG curve of the polymer had the same variation trend as that pre-irradiation, and the decomposition temperature was relatively close. After irradiation, the positions of the characteristic absorption peaks of the main functional groups, such as -C=O, C-H and C-F bonds, did not change significantly. Before and after irradiation, the fluorocarbon polymer had the same elemental compositions and characteristic peak positions, while the peak intensity was slightly weakened. Thus, it is important that the molecular structure was relatively stable, and the chemical bonds had not varied significantly. It still exhibited excellent resistance to electron irradiation.
1 Yuan J. Lubrication Engineering, 2006(3), 154 (in Chinese). 袁杰. 润滑与密封, 2006(3), 154. 2 Chen X W, Liang Y X. Lubrication Engineering, 2006, 31(6), 176 (in Chinese). 陈晓伟, 梁宇翔. 润滑与密封, 2006, 31(6), 176. 3 Jones W R, Jansen M J. Proceedings of the Institution of Mechanical Engineers, 2008, 222(8), 997. 4 Jones W R, Jansen M J. Handbook of lubrication and tribology:Lubrication for space application, CRC Press, US, 1992, pp. 1. 5 Roberts E W. In:European Symposium 7th Space Mechanisms and Tribology. The Netherlands, 1997, pp. 239. 6 Ke H J. Study on the characteristics of surface lubrication under lubricant migration. Ph. D. Thesis, Nanjing University of Aeronautics and Astronautics, China, 2016 (in Chinese). 柯和继. 润滑油爬移对表面润滑特性的影响. 博士学位论文, 南京航空航天大学, 2016. 7 Zaretsky E V. Tribology International, 1990, 23(2), 75. 8 Dai Q W, Huang W, Wang X L. Surface Technology, 2014, 43(6), 125(in Chinese). 戴庆文, 黄巍, 王晓雷. 表面技术, 2014, 43(6), 125. 9 Zisman W A.Contact angle, wettability, and adhesion, advances in chemistry series 43, American Chemical Society:Washington DC, 1964, pp. 21. 10 Shafrin E G, Zisman W A. The Journal of Physical Chemistry, 1960, 64(5), 519. 11 Honda K, Morita M, Otsuka H, et al. Macromolecules, 2005, 38, 5699. 12 Honda K, Morita M, Sasaki O, et al. Macromolecules, 2010, 43, 454. 13 Gu Z X. Study on the surface properties of fluorinated (methyl) acrylate copolymer. Ph. D. Thesis, Suzhou University, China, 2017(in Chinese). 顾子旭. 含氟(甲基)丙烯酸酯共聚物表面特性研究. 博士学位论文, 苏州大学, 2017. 14 Koberstein J T. Journal of Ploymer Science Part B:Polym Physics, 2004, 42, 2942. 15 Tongkhundam Y, Sirivat A, Brostow W. Polymer, 2004, 45(26), 8731. 16 Wang X L, Ye Q, Liu J X, et al. Journal Colloid Interface Science, 2010, 351, 261. 17 Huang Y, Li J Y, Zhang D G, et al. Materials Reports, 2024, 38(4),1(in Chinese). 黄勇,李俊越,张栋葛,等. 材料导报,2024, 38(4),1. 18 Li H, Yao M, Lai J, et al. Materials Reports, 2023, 37(2), 1(in Chinese). 李辉,姚敏,赖娟,等. 材料导报,2023, 37(2),1. 19 Fan H F, Guo Z G. Materials Reports, 2022, 36(7), 1(in Chinese). 范海峰,郭志光. 材料导报,2022, 36(7), 1. 20 Hou J X, Ding W W, Feng Y C, et al. Polymers, 2017, 9, 1. 21 Barrier coating solution, lubricant migration deterring. Standards, MIL-B-81744A, 1976. 22 Hampson M, Wardzinski B. In:16th European Space Mechanisms and Tribology Symposium. Bilbao, Spain, 2015, pp. 1. 23 Buttery M, Hampson M, Kent A, et al. Development of advanced lubricants for space mechanisms based on ionic liquids. Ph. D. Thesis, University of Hertfordshire, UK, 2017. 24 Feng K, Guo F J, Huo L X, et al. Vacuum and Cryogenics, 2024, 30(1), 64(in Chinese). 冯凯, 郭芳君, 霍丽霞, 等. 真空与低温, 2024, 30(1), 64. 25 Pei M L, Huo L X, Zhao X M, et al. Applied Surface Science, 2020, 507, 145138. 26 Pei M L, Huo L X, Zhang K F, et al. Colloids and Surfaces A, 2020, 585, 123984. 27 Pei M L, Pan C O, Wu D, et al. Applied Clay Science, 2020, 189, 105546. 28 Zhai R Q, Ren G H, Tian D B, et al. Vacuum, 2019, 56(1), 72(in Chinese). 翟睿琼, 任国华, 田东波, 等. 真空, 2019, 56(1), 72. 29 Zhao X H, Shen Z G, Wang Z T, et al. Acta Aeronautica et Astronautica Sinica, 2001, 23(22), 235(in Chinese). 赵小虎, 沈志刚, 王忠涛, 等. 航空学报, 2001, 23(22), 235. 30 Owens D K, Wendt R C. Journal of Applied Polymer Science, 1969, 13(8), 1741. 31 Morra M, Occhiello E, Carbassi F. Advances in Colloid and Interface Science, 1990, 32, 79. 32 Li X W, Du S M, Yan J Y, et al. Materials Reports, 2024, 38(19), 1(in Chinese). 李雪伍,杜少萌,闫佳洋,等. 材料导报,2024, 38(19), 1. 33 Ohagan D. Chemical Society Reviews, 2008, 37(2), 308. 34 Ameduri B. Progress in Polymer Science, 2001, 26(1), 105. 35 Jung S, Chuluunbandi K, Kim Y, et al. Journal of Ploymer Science Part A:Polymer Chemistry, 2018, 56(23), 2672. 36 Yang T T, Peng H, Cheng S Y, et al. Journal of Applied Polymer Science, 2007, 104(5), 3277. 37 Chen S L, Sheu Y L, Sheu J. Journal of Applied Polymer Science, 1997, 63(7), 903. 38 Saidi S, Gulttard F, Guimon C. Journal of Polymer Science Part A:Polymer Chemistry, 2005, 43(17), 3737. 39 Li K, Wu P P, Han Z W. Ploymer, 2002, 43(14), 4079.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2025, Vol. 39 
