低表面能氟碳聚合物及涂层的耐电子辐照特性研究

doi:10.11896/cldb.25030080

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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.

Key words： fluorocarbon polymer electron irradiation low surface energy coating

Published: 10 August 2025 Online: 2025-08-13

CLC number:

TG174

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	Articles by authors
	FENG Kai
	HUO Lixia
	SUN Fanxin
	GUO Fangjun
	WANG Shiwei
	GOU Shining
	ZHOU Hui
	GAO Hong
	ZHANG Kaifeng

Cite this article:

FENG Kai,HUO Lixia,SUN Fanxin, et al. Irradiation Properties of Low Surface Energy Fluorocarbon Polymer and Coating[J]. Materials Reports, 2025, 39(15): 25030080-6.

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https://www.mater-rep.com/EN/10.11896/cldb.25030080 OR https://www.mater-rep.com/EN/Y2025/V39/I15/25030080

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