Wear Mechanisms of Polymers at Cryogenic Temperatures

Glaeser, W. A.; Kissel, John W.; Snediker, D. K.

doi:10.1007/978-1-4613-4461-2_17

Cited by 5 publications

(4 citation statements)

References 3 publications

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“…According to previous studies, it was found that the wear mechanism of polymers was changed at different temperatures. Abrasive wear was observed at low temperatures, whereas at high temperatures, adhesive wear dominates …”

Section: Introductionmentioning

confidence: 99%

Enhanced thermal conductivity and wear resistance of polytetrafluoroethylene composites through boron nitride and zinc oxide hybrid fillers

Luan

Huang

Zhang

2015

J of Applied Polymer Sci

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In this study, the thermal conductivity and wear resistance of the polytetrafluoroethylene (PTFE)/boron nitride (BN), PTFE/zinc oxide (ZnO), PTFE/tetra‐needle‐shaped zinc oxide whiskers (T‐ZnO), and PTFE/hybrid filler composites were investigated. Moreover, hot‐press molding was used to prepare the composites, and scanning electron microscopy was used to observe the morphology of the fillers and the friction interface of the composites. The results show that continuous thermally conductive paths could be formed in the PTFE/hybrid fillers (T‐ZnO and BN) composites so that the thermal conductivity of the PTFE was improved through addition of the hybrid fillers. Meanwhile, the synergistic effects of the hybrid fillers were useful for reducing the wear rate of the composites. In addition, for the pure PTFE, abrasive and adhesive wear was found. Compared to the worn surface of the pure PTFE, the worn surface of the PTFE composites filled with ZnO, T‐ZnO, BN, and hybrid fillers presented much smoother surfaces, and slighter ploughing occurred. Therefore, the hybrid fillers improved not only the thermal conductivity but also the wear resistance of the PTFE composites. The data obtained in this study contributed to the construction of a technical foundation for the preparation of composites with a high thermal conductivity and wear resistance. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42302.

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Section: Introductionmentioning

confidence: 99%

Enhanced thermal conductivity and wear resistance of polytetrafluoroethylene composites through boron nitride and zinc oxide hybrid fillers

Luan

Huang

Zhang

2015

J of Applied Polymer Sci

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“…He found good tribological properties for carbon-filled PTFE materials at low temperatures. Glaeser 16 studied the wear mechanisms of polymers at cryogenic temperatures. It was concluded from the surface analyses of the wear tracks that the wear process in pure PTFE at T = 77 K in LN 2 is totally different from that at room temperature.…”

Section: Ptfe Particles In a Polymermentioning

confidence: 99%

“…In particular, PTFE and PTFEfilled composites have been successfully used in rocket applications. [16][17] A list of various polymer-compounds, mostly based on PTFE, used as seals for extreme environments is given in Fig. 6.…”

Section: Introduction To Cryotechnologymentioning

confidence: 99%

Polymer Composites for Tribological Applications in a Range Between Liquid Helium and Room Temperature

Friedrich

Theiler²,

Klein

2009

Polymer Tribology

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This study deals with the development of PEEK (polyetheretherketone) and PTFE (polytetrafluoroethylene) based composites, optimized for low friction and low wear performance under extreme environments. It is demonstrated that the incorporation of a harder polymer component into PTFE (such as PEEK particles), a short fibre reinforcement (e.g. carbon fibres CF), and internal lubricants (e.g. PTFE particles), helps to reduce the friction and to improve the wear resistance over a very wide temperature range.

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“…1,2 However, PTFE exhibits severe creep deformation and poor wear and abrasion resistance; this leads to early failure and leakage during use. [11][12][13] The tribological performances of polymers depend significantly on the temperature at the friction contact, especially for poly-mers with low heat conductivity. Earlier studies showed that the filling of some inorganic particles and fibers, such as graphite, copper, molybdenum disulfide, glass and carbon fibers, zinc oxide (ZnO), carbon black, and aluminum oxide, can significantly improve the wear rate of PTFE composites and cause the abrasive properties to reduce the life of precise friction units.…”

Section: Introductionmentioning

confidence: 99%

Enhanced thermal conductivity and wear resistance of polytetrafluoroethylene composites through boron nitride and zinc oxide hybrid fillers

Chen¹,

Dao-cheng²,

Huang³

et al. 2015

J of Applied Polymer Sci

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Wear Mechanisms of Polymers at Cryogenic Temperatures

Cited by 5 publications

References 3 publications

Enhanced thermal conductivity and wear resistance of polytetrafluoroethylene composites through boron nitride and zinc oxide hybrid fillers

Enhanced thermal conductivity and wear resistance of polytetrafluoroethylene composites through boron nitride and zinc oxide hybrid fillers

Polymer Composites for Tribological Applications in a Range Between Liquid Helium and Room Temperature

Enhanced thermal conductivity and wear resistance of polytetrafluoroethylene composites through boron nitride and zinc oxide hybrid fillers

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