Influence of PTFE as a solid lubricant on the mechanical, electrical, and tribological properties of CF-reinforced PC composites

The objective of this research was to study the effects of polytetrafluoroethylene (PTFE) as a solid lubricant on the mechanical, electrical, and tribological properties of carbon fiber (CF)-reinforced polycarbonate (PC) composites. Samples were prepared by means of single-screw extrusion and inject...

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Main Authors: Shamsuddin, Muhamad Syukri Mohamed, Othman, Ainur Hanim, Nasir, Ramdziah Md, Hassan, Aziz, Senawi, Rozaimi, Thirmizir, Mohd Zharif Ahmad, Ishak, Zainal Arifin Mohd
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Published: Wiley 2021
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Online Access:http://eprints.um.edu.my/28762/
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spelling my.um.eprints.287622022-04-20T07:32:31Z http://eprints.um.edu.my/28762/ Influence of PTFE as a solid lubricant on the mechanical, electrical, and tribological properties of CF-reinforced PC composites Shamsuddin, Muhamad Syukri Mohamed Othman, Ainur Hanim Nasir, Ramdziah Md Hassan, Aziz Senawi, Rozaimi Thirmizir, Mohd Zharif Ahmad Ishak, Zainal Arifin Mohd QD Chemistry The objective of this research was to study the effects of polytetrafluoroethylene (PTFE) as a solid lubricant on the mechanical, electrical, and tribological properties of carbon fiber (CF)-reinforced polycarbonate (PC) composites. Samples were prepared by means of single-screw extrusion and injection molding processes. The mechanical tests included tensile, flexural, and failing weight impact tests, while the electrical tests consisted of surface and volume resistivity tests. The tribological testing was conducted under dry sliding conditions using pin-on-disk configuration. The results showed that the addition of CF managed to significantly reduce the electrical resistivity as the CF loading approached 10-15 wt%. The addition of PTFE managed to reduce the resistivity of the composite, that is, from 4.51 to 0.53 x 10 (omega cm). The incorporation of 15 wt%. CF resulted with an increase of 45% in tensile strength and 51.5% in flexural strength, while the addition of PTFE had a negative impact on both properties. It was shown that PTFE was able to reduce the friction coefficient, mu and wear rate, K up to 0.257 and 6.35 x 10(6) (mm(3)/Nm), respectively, which can be attributed to the excellent abilities of PTFE to form transfer film. The composite consisting of 15 wt% CF and 10 wt%. PTFE showed highest improvement in term of electrical resistivity, and is deemed the most suitable composition for this study. Scanning electron microscopy was also carried out to further elucidate the fracture and wear mechanism of the PC/CF/PTFE composites. Wiley 2021-05-10 Article PeerReviewed Shamsuddin, Muhamad Syukri Mohamed and Othman, Ainur Hanim and Nasir, Ramdziah Md and Hassan, Aziz and Senawi, Rozaimi and Thirmizir, Mohd Zharif Ahmad and Ishak, Zainal Arifin Mohd (2021) Influence of PTFE as a solid lubricant on the mechanical, electrical, and tribological properties of CF-reinforced PC composites. Journal of Applied Polymer Science, 138 (18). ISSN 0021-8995, DOI https://doi.org/10.1002/app.50346 <https://doi.org/10.1002/app.50346>. 10.1002/app.50346
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic QD Chemistry
spellingShingle QD Chemistry
Shamsuddin, Muhamad Syukri Mohamed
Othman, Ainur Hanim
Nasir, Ramdziah Md
Hassan, Aziz
Senawi, Rozaimi
Thirmizir, Mohd Zharif Ahmad
Ishak, Zainal Arifin Mohd
Influence of PTFE as a solid lubricant on the mechanical, electrical, and tribological properties of CF-reinforced PC composites
description The objective of this research was to study the effects of polytetrafluoroethylene (PTFE) as a solid lubricant on the mechanical, electrical, and tribological properties of carbon fiber (CF)-reinforced polycarbonate (PC) composites. Samples were prepared by means of single-screw extrusion and injection molding processes. The mechanical tests included tensile, flexural, and failing weight impact tests, while the electrical tests consisted of surface and volume resistivity tests. The tribological testing was conducted under dry sliding conditions using pin-on-disk configuration. The results showed that the addition of CF managed to significantly reduce the electrical resistivity as the CF loading approached 10-15 wt%. The addition of PTFE managed to reduce the resistivity of the composite, that is, from 4.51 to 0.53 x 10 (omega cm). The incorporation of 15 wt%. CF resulted with an increase of 45% in tensile strength and 51.5% in flexural strength, while the addition of PTFE had a negative impact on both properties. It was shown that PTFE was able to reduce the friction coefficient, mu and wear rate, K up to 0.257 and 6.35 x 10(6) (mm(3)/Nm), respectively, which can be attributed to the excellent abilities of PTFE to form transfer film. The composite consisting of 15 wt% CF and 10 wt%. PTFE showed highest improvement in term of electrical resistivity, and is deemed the most suitable composition for this study. Scanning electron microscopy was also carried out to further elucidate the fracture and wear mechanism of the PC/CF/PTFE composites.
format Article
author Shamsuddin, Muhamad Syukri Mohamed
Othman, Ainur Hanim
Nasir, Ramdziah Md
Hassan, Aziz
Senawi, Rozaimi
Thirmizir, Mohd Zharif Ahmad
Ishak, Zainal Arifin Mohd
author_facet Shamsuddin, Muhamad Syukri Mohamed
Othman, Ainur Hanim
Nasir, Ramdziah Md
Hassan, Aziz
Senawi, Rozaimi
Thirmizir, Mohd Zharif Ahmad
Ishak, Zainal Arifin Mohd
author_sort Shamsuddin, Muhamad Syukri Mohamed
title Influence of PTFE as a solid lubricant on the mechanical, electrical, and tribological properties of CF-reinforced PC composites
title_short Influence of PTFE as a solid lubricant on the mechanical, electrical, and tribological properties of CF-reinforced PC composites
title_full Influence of PTFE as a solid lubricant on the mechanical, electrical, and tribological properties of CF-reinforced PC composites
title_fullStr Influence of PTFE as a solid lubricant on the mechanical, electrical, and tribological properties of CF-reinforced PC composites
title_full_unstemmed Influence of PTFE as a solid lubricant on the mechanical, electrical, and tribological properties of CF-reinforced PC composites
title_sort influence of ptfe as a solid lubricant on the mechanical, electrical, and tribological properties of cf-reinforced pc composites
publisher Wiley
publishDate 2021
url http://eprints.um.edu.my/28762/
_version_ 1735409575685783552
score 13.209306