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Journal of Materials Science

, Volume 44, Issue 1, pp 227–233 | Cite as

Fabrication and properties of a lubrication composite coating based on poly(p-hydroxybenzoic acid) (PHBA)

  • Wang JianEmail author
  • Zhao Wenzhen
  • Guo Chaowei
Article

Abstract

The present paper describes an approach for fabricating smooth, compact and homogeneous composite coatings of PHBA/PA/MoS2 on test blocks. The tribological behaviors were tested on a ring-block machine. For the PHBA/PA 6,6/MoS2 coating of 20 wt.% PA 6,6 and 30 wt.% MoS2 with the thickness of 20–40 μm, the steady friction coefficient was approximately 0.04 with the lowest wear loss while sliding against AISI 1045 steel ring. The PHBA in coating was synthesized in situ at 200 °C for the first step and 260 °C for the second. The chemical structures and thermal properties of the obtained PHBA were characterized by means of Fourier transform infrared spectroscopy (FT-IR) and differential scanning calorimetry/thermogravimetry (DSC/TG). The results showed that the chemical structure of the obtained PHBA was identical to that of the commercial PHBA powder despite that the decomposition temperature and the crystal transition temperature of the former were approximately 10–20 °C lower than that of the latter. The influence of nominal pressure and sliding velocity on the friction coefficient (μ) and wear volume loss of the coatings was investigated. The results displayed that μ increased with the increase of sliding velocity, while it decreased when the nominal pressure was increased. For the volume loss, it increased with both the increase of speed and pressure.

Keywords

Friction Coefficient MoS2 Composite Coating Test Block Nematic Phase 

Abbreviations

PHBA

Poly(p-hydroxybenzoic acid)

Td

Decomposition temperature

Tc

Crystal transition temperature

Tm

Melting temperature

OM

Optical microscope

PA 6,6

Polyamide 6,6

p-ABA

p-acetoxybenzoic acid

p-HBA

p-hydroxybenzoic acid

THF

Tetrahydrofuran

FT-IR

Fourier transform infrared spectroscopy

Tg

Glass transition temperature

DSC

Differential scanning calorimetry

TGA

Thermogravity analysis

\( \bar{D}_{\text{p}} \)

Mean polymerization degree

\( \bar{M}_{\text{w}} \)

Mean relative molecular weight

References

  1. 1.
    Gilkey R, Caldwell JR (1959) J Appl Polym Sci 2:198CrossRefGoogle Scholar
  2. 2.
    Economy J, Storm RS (1976) J PolyM Sci Polym Chem Ed 14:2207CrossRefGoogle Scholar
  3. 3.
    Economy J, Volksen J, Viney J et al (1988) Macromolecules 21:2777CrossRefGoogle Scholar
  4. 4.
    Mathew J, Bahuleka RV, Ghadage RS et al (1992) Macromolecules 25:7338CrossRefGoogle Scholar
  5. 5.
    Chen EQ (2002) Eng Plast Appl 30(8):57 (in Chinese)Google Scholar
  6. 6.
    Meng YZ, Tjong SC (1999) Polymer 40:2711CrossRefGoogle Scholar
  7. 7.
    Samyn P, Baets PD, Schoukens G et al (2007) Wear 262:1433CrossRefGoogle Scholar
  8. 8.
    Shaban H, Al-Sarawi MA, Behbehane A et al (2001) Eur Polym J 37:1115CrossRefGoogle Scholar
  9. 9.
    Ning YC (2000) Structure identification of organic compound and organic spectroscopy, 2nd edn. Chinese Science Press, BeijingGoogle Scholar
  10. 10.
    Kimura K, Horii T, Yamashita Y (2003) J Polym Sci Part A: Polym Chem 41:3275CrossRefGoogle Scholar
  11. 11.
    Tosaka M, Yamakawa M (1999) Microsc Res Tech 46:325CrossRefGoogle Scholar
  12. 12.
    Habenschuss A, Varma-Nair M, Varma-Nair YK et al (2006) Polymer 47:2369CrossRefGoogle Scholar
  13. 13.
    Lukasheva NV, Lukasheva A, Mosell T et al (1994) Macromolecules 27:4726CrossRefGoogle Scholar
  14. 14.
    Kukureka SN, Hooke CJ, Rao M et al (1999) Tribol Int 32:107CrossRefGoogle Scholar
  15. 15.
    Spalvins T (1987) J Vac Sci Technol A 5:212CrossRefGoogle Scholar
  16. 16.
    Furlong O, Gao F, Kotvis P (2006) Tribol Int. https://doi.org/www.sciencedirect.com. Accessed 12 Jul 2006
  17. 17.
    Novotny VJ, Pan XH, Bhatia CS (1994) J Vac Sci Technol A 12:2879CrossRefGoogle Scholar
  18. 18.
    Samyn P, Samyn G (2006) Tribol Int 39:575CrossRefGoogle Scholar
  19. 19.
    Bassani R, Levita G, Meozzi M et al (2001) Wear 247:125CrossRefGoogle Scholar
  20. 20.
    Thomas Φ, Tom L, Bent T et al (2008) Wear 265:203CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  1. 1.State Key Laboratory for Mechanical Behavior of Materials, School of Material Science and EngineeringXi’an Jiaotong UniversityXi’anChina
  2. 2.School of Chemistry & Chemical EngineeringYangzhou UniversityYangzhouChina

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