Abstract
Polytetrafluoroethylene (PTFE) molding is regarded as a promising component for shaft sealing owing to its excellent insulation and lubricity properties. However, the low anti-wear performance derived from the large creep of the PTFE polymer limits its highly stable operation. Herein, two-dimensional calcium aluminum layered double hydroxides (Ca/Al-LDHs) are introduced as solid lubricants to enhance the anti-wear property of PTFE-based molding to yield LDH-PTFE-x% (where x denotes the mass ratio of Ca/Al-LDHs). The wearable performance of LDH-PTFE-8% is 3.4 times greater than that of pure PTFE-based molding, while maintaining excellent mechanical properties. The high unctuosity of Ca/Al-LDHs, in addition to the hydrogen-bonding intermolecular interaction between the OH− anions of Ca/Al-LDHs and –F groups in PTFE, results in the formation of a protective transfer film containing Ca/Al-LDHs during the friction process to enhance the wear resistance of LDH-PTFE molding.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
