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- Title
Fluorinated graphite reinforced polytetrafluoroethylene/poly(butylene terephthalate) composites as friction materials for deep‐sea applications.
- Authors
Su, Qiong; Wang, Zhongxu; Liu, Liang; Wang, Hongling; Wang, Jianzhang; Wang, Yanbin; Liu, Hao; Yan, Fengyuan
- Abstract
The application of polymer composites is one of the most effective methods for preventing lubrication failure in deep‐sea engineering. In this study, fluorinated graphite (FGr) microsheets were incorporated into polytetrafluoroethylene (PTFE) microparticle‐filled poly(butylene terephthalate) (PBT) composites. The tribological performance in the simulated deep‐sea environment at elevated seawater pressure equivalent to 3000 m ocean depth was investigated. The results showed that FGr enhances the flexural and compressive strengths, thermal stability, and seawater resistance of the PTFE/PBT composite. The wear rate was decreased to 96% at the critical FGr content of 4% by improving the transfer onto the metallic counterfaces, preventing direct contact and shear between friction couples. Moreover, the seawater pressure impedes composite transfer, leading to a 29% increase in the wear rate.
- Subjects
FRICTION materials; GRAPHITE fluorides; OCEAN engineering; COMPOSITE materials; BUTENE; POLYTEF; POLYETHYLENE terephthalate
- Publication
Journal of Applied Polymer Science, 2024, Vol 141, Issue 28, p1
- ISSN
0021-8995
- Publication type
Article
- DOI
10.1002/app.55645