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79485

FRICTION AND WEAR OF POLYMERIC MATERIALS FILLED BY OIL AND REINFORCED BY NANOCARBON TUBES

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Last updated: 25 Dec 2024

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Abstract

The present work investigates the possibility to introduce new self-lubricating polymeric materials for dry sliding bearing applications. The proposed polymeric composites are consisting of high density polyethylene (HDPE), low density polyethylene (LDPE) and polystyrene (PS) filled by paraffin oil and reinforced by carbon nanotubes (CNTs). Experiments were carried to test the frictional properties of the proposed composites at dry sliding conditions.
 
The experiments showed that filling HDPE, LDPE and PS by paraffin oil and reinforcing them by CNTs can decrease the friction coefficient and increase wear resistance significantly.This may be referred to the presence of oil in multipores inside the polymer matrix, where they work as reservoirs of oil from which it leaks up to the sliding surface and causes friction decrease, where the contact will be between partially polymer composites/steel and oil/steel due to the mixed lubrication regime offered by the oil film. Besides, oil film can isolate the contacting asperities of the sliding surfaces from excessive wear, where high shear tearing and transfer of polymer to the steel surface were diminished.The self-lubricating mechanism of CNTs during sliding depends on the rolling movement of the CNTs, where they change friction and shear stress into rolling. This mechanism can be achieved when the nanotubes can have the medium in which they can move freely. Presence of oil can provide this facility that decreases both friction and wear.

DOI

10.21608/jest.2017.79485

Keywords

Friction, Wear, polymeric materials, paraffin oil, nanocarbon tubes

Authors

First Name

H. S.

Last Name

Eatemad

MiddleName

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Affiliation

Production Engineering and Mechanical Design Dept., Faculty of Engineering, Minia University, P. N. 61111, El-Minia, EGYPT.

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First Name

A. M.

Last Name

Samy

MiddleName

-

Affiliation

Production Engineering and Mechanical Design Dept., Faculty of Engineering, Minia University, P. N. 61111, El-Minia, EGYPT.

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-

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-

Orcid

-

First Name

M. I.

Last Name

Khashaba

MiddleName

-

Affiliation

Production Engineering and Mechanical Design Dept., Faculty of Engineering, Minia University, P. N. 61111, El-Minia, EGYPT.

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Orcid

-

First Name

Y. A.

Last Name

Ali

MiddleName

-

Affiliation

Production Engineering and Mechanical Design Dept., Faculty of Engineering, Minia University, P. N. 61111, El-Minia, EGYPT.

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Volume

14

Article Issue

4

Related Issue

11866

Issue Date

2017-10-01

Receive Date

2017-01-15

Publish Date

2017-10-01

Page Start

15

Page End

26

Print ISSN

2090-5882

Online ISSN

2090-5955

Article File

JEST_Volume 14_Issue 4_Pages 15-26.pdf

PDF . 447.7kB

Link

https://jest.journals.ekb.eg/article_79485.html

Detail API

https://jest.journals.ekb.eg/service?article_code=79485

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Original Article

Type Code

1,211

Publication Type

Journal

Publication Title

Journal of the Egyptian Society of Tribology

Publication Link

https://jest.journals.ekb.eg/

MainTitle

FRICTION AND WEAR OF POLYMERIC MATERIALS FILLED BY OIL AND REINFORCED BY NANOCARBON TUBES

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Article

Created At

22 Jan 2023