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79483

FRICTION AND WEAR OF POLYMERIC MATERIALS REINFORCED BY CARBON NANOTUBES

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Last updated: 25 Dec 2024

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Abstract

The present work studies friction coefficient and wear of polymeric materials such as high density polyethylene (HDPE), low density polyethylene (LDPE) and polystyrene (PS). The polymers are filled by carbon nanotubes (CNTs) in concentration up to 1.0 wt. % as well as paraffin oil in concentration of 5.0 wt. %. The frictional behavior of the proposed composites is investigated at different values of applied load at dry sliding.
 
It was observed that friction coefficient slightly increased with increasing NCTs content. The reason of friction increase is attributed to the abrasive action of CNTs. Besides, CNTs strengthened the polymeric matrix and increased its shear strength and consequently friction increased. Wear drastically decreases down to minimum then significantly increased with increasing CNTs content. Minimum wear values were observed at 0.6 wt. % CNTs. The reduction of wear can be explained on the basis that reinforcing the tested polymers by CNTs makes the micro-cracks propagation more difficult and increases tensile strength. As CNTs content increases the tubes will agglomerate and decrease the interfacial adhesion between the CNTs and polymer, so that CNTs will be simply pull-out and will not contribute towards decreasing wear resistance of the composites. Friction displayed by the tested polymers filled by 5.0 wt. % paraffin oils and reinforced by CNTs showed lower values than that observed for composites free of oil. Friction coefficient slightly decreased with increasing CNTs content. It seems that, oil impregnated in the matrix enhances the release of NCTs from the matrix during sliding, where they work as rollers on the contact surface. HDPE composites displayed minimum friction coefficient and wear, while PS showed the highest values.

DOI

10.21608/jest.2017.79483

Keywords

Friction, Wear, high density polyethylene, Low density polyethylene, polystyrene, carbon nanotubes

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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Orcid

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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.

Email

-

City

-

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.

Email

-

City

-

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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-

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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

1

Page End

14

Print ISSN

2090-5882

Online ISSN

2090-5955

Article File

JEST_Volume 14_Issue 4_Pages 1-14.pdf

PDF . 538.3kB

Link

https://jest.journals.ekb.eg/article_79483.html

Detail API

https://jest.journals.ekb.eg/service?article_code=79483

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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 REINFORCED BY CARBON NANOTUBES

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Article

Created At

22 Jan 2023