Effect of carbon-nanotube length on friction and wear of polyamide 6,6 nanocomposites

S. M. Lee, M. W. Shin, Ho Jang

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The friction and wear of polyamide 6,6 (PA66) nanocomposites containing 1. wt% of carbon nanotubes (CNTs) with different lengths were studied using a block-on-ring tribometer at different sliding velocities. CNT addition was found to increase storage modulus, loss modulus, and thermal conductivity of the composites, suggesting possible influence to their tribological properties. Tribotest results revealed a substantial effect of the length of CNTs and it was more at elevated temperatures. In the sliding tests performed at temperature below 110. °C the coefficient of friction (COF) tended to be decreased by CNTs addition, while it was slightly increased as the CNT length increased. However, at temperatures beyond 110. °C, the COF increased with the addition of CNTs and increased, even more, with longer CNTs. Wear resistance was also improved by long CNTs, and this improvement was particularly evident at elevated temperatures. TEM investigation of the sliding surface indicated that the improvement of wear resistance and the increased COFs observed at high temperatures could be attributed to the nematic alignment of CNTs along the sliding direction, which was more pronounced with longer CNTs. The marked reinforcing effect of long CNTs was also supported by the morphology of the transfer films and wear debris.

Original languageEnglish
Pages (from-to)103-110
Number of pages8
JournalWear
Volume320
Issue number1
DOIs
Publication statusPublished - 2014 Dec 1

Fingerprint

Carbon Nanotubes
Polyamides
Carbon nanotubes
Nanocomposites
nanocomposites
friction
carbon nanotubes
Wear of materials
Friction
sliding
wear resistance
coefficient of friction
Wear resistance
nylon 6
Temperature
tribometers
temperature
debris
Debris
Thermal conductivity

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Mechanics of Materials

Cite this

Effect of carbon-nanotube length on friction and wear of polyamide 6,6 nanocomposites. / Lee, S. M.; Shin, M. W.; Jang, Ho.

In: Wear, Vol. 320, No. 1, 01.12.2014, p. 103-110.

Research output: Contribution to journalArticle

Lee, S. M. ; Shin, M. W. ; Jang, Ho. / Effect of carbon-nanotube length on friction and wear of polyamide 6,6 nanocomposites. In: Wear. 2014 ; Vol. 320, No. 1. pp. 103-110.
@article{82bc5e444b92412db32cc2bfa167f655,
title = "Effect of carbon-nanotube length on friction and wear of polyamide 6,6 nanocomposites",
abstract = "The friction and wear of polyamide 6,6 (PA66) nanocomposites containing 1. wt{\%} of carbon nanotubes (CNTs) with different lengths were studied using a block-on-ring tribometer at different sliding velocities. CNT addition was found to increase storage modulus, loss modulus, and thermal conductivity of the composites, suggesting possible influence to their tribological properties. Tribotest results revealed a substantial effect of the length of CNTs and it was more at elevated temperatures. In the sliding tests performed at temperature below 110. °C the coefficient of friction (COF) tended to be decreased by CNTs addition, while it was slightly increased as the CNT length increased. However, at temperatures beyond 110. °C, the COF increased with the addition of CNTs and increased, even more, with longer CNTs. Wear resistance was also improved by long CNTs, and this improvement was particularly evident at elevated temperatures. TEM investigation of the sliding surface indicated that the improvement of wear resistance and the increased COFs observed at high temperatures could be attributed to the nematic alignment of CNTs along the sliding direction, which was more pronounced with longer CNTs. The marked reinforcing effect of long CNTs was also supported by the morphology of the transfer films and wear debris.",
keywords = "Carbon nanotube (CNT), Friction coefficient, PA66, Polymer-matrix composite, Wear",
author = "Lee, {S. M.} and Shin, {M. W.} and Ho Jang",
year = "2014",
month = "12",
day = "1",
doi = "10.1016/j.wear.2014.08.011",
language = "English",
volume = "320",
pages = "103--110",
journal = "Wear",
issn = "0043-1648",
publisher = "Elsevier BV",
number = "1",

}

TY - JOUR

T1 - Effect of carbon-nanotube length on friction and wear of polyamide 6,6 nanocomposites

AU - Lee, S. M.

AU - Shin, M. W.

AU - Jang, Ho

PY - 2014/12/1

Y1 - 2014/12/1

N2 - The friction and wear of polyamide 6,6 (PA66) nanocomposites containing 1. wt% of carbon nanotubes (CNTs) with different lengths were studied using a block-on-ring tribometer at different sliding velocities. CNT addition was found to increase storage modulus, loss modulus, and thermal conductivity of the composites, suggesting possible influence to their tribological properties. Tribotest results revealed a substantial effect of the length of CNTs and it was more at elevated temperatures. In the sliding tests performed at temperature below 110. °C the coefficient of friction (COF) tended to be decreased by CNTs addition, while it was slightly increased as the CNT length increased. However, at temperatures beyond 110. °C, the COF increased with the addition of CNTs and increased, even more, with longer CNTs. Wear resistance was also improved by long CNTs, and this improvement was particularly evident at elevated temperatures. TEM investigation of the sliding surface indicated that the improvement of wear resistance and the increased COFs observed at high temperatures could be attributed to the nematic alignment of CNTs along the sliding direction, which was more pronounced with longer CNTs. The marked reinforcing effect of long CNTs was also supported by the morphology of the transfer films and wear debris.

AB - The friction and wear of polyamide 6,6 (PA66) nanocomposites containing 1. wt% of carbon nanotubes (CNTs) with different lengths were studied using a block-on-ring tribometer at different sliding velocities. CNT addition was found to increase storage modulus, loss modulus, and thermal conductivity of the composites, suggesting possible influence to their tribological properties. Tribotest results revealed a substantial effect of the length of CNTs and it was more at elevated temperatures. In the sliding tests performed at temperature below 110. °C the coefficient of friction (COF) tended to be decreased by CNTs addition, while it was slightly increased as the CNT length increased. However, at temperatures beyond 110. °C, the COF increased with the addition of CNTs and increased, even more, with longer CNTs. Wear resistance was also improved by long CNTs, and this improvement was particularly evident at elevated temperatures. TEM investigation of the sliding surface indicated that the improvement of wear resistance and the increased COFs observed at high temperatures could be attributed to the nematic alignment of CNTs along the sliding direction, which was more pronounced with longer CNTs. The marked reinforcing effect of long CNTs was also supported by the morphology of the transfer films and wear debris.

KW - Carbon nanotube (CNT)

KW - Friction coefficient

KW - PA66

KW - Polymer-matrix composite

KW - Wear

UR - http://www.scopus.com/inward/record.url?scp=84907499929&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84907499929&partnerID=8YFLogxK

U2 - 10.1016/j.wear.2014.08.011

DO - 10.1016/j.wear.2014.08.011

M3 - Article

AN - SCOPUS:84907499929

VL - 320

SP - 103

EP - 110

JO - Wear

JF - Wear

SN - 0043-1648

IS - 1

ER -