The focus of this study was the development of a new lubricating grease, using surface-modified attapulgite clay as thickener and synthetic oil (PAO 40) as the base oil. The tribological sensitivity of the new grease was investigated by studying the effect of adding three solid additives [KB3O5, MoS2, graphite and a graphite/MoS2 mixture (mass ratio 3:2)]. Its tribological behavior was compared with that of traditional bentone grease by adding MoS2. The dropping point and the cone penetration of the new grease were also investigated and analyzed. The wear scar diameter of the base grease was measured on an MRS-1 J (G) four-ball tester, and the tribological sensitivity of solid lubricating additives to attapulgite clay base grease was evaluated using an Optimol SRV reciprocating friction and wear tester. The addition of MoS2 and the graphite/MoS2 mixture to the new lubricating grease improved its friction-reducing ability, while the addition of KB3O5 improved its antiwear ability. The additives MoS2 and the graphite/MoS2 mixture also increased the load-carrying capacity of the base grease. The attapulgite clay grease containing MoS2 had a better friction-reducing ability than the traditional bentone grease containing MoS2.
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Martín-Alfonso, J.E., Valencia, C., Sánchez, M.C., Franco, J.M., Gallegos, C.: Development of new lubricating grease formulation using recycled LDPE as rheology modifier additive. Eur. Polym. J. 43, 139–149 (2007)
Liu, Y., Wang, W.B., Wang, A.Q.: Adsorption of lead ions from aqueous solution by using carboxymethyl cellulose-g-poly (acrylic acid)/attapulgite hydrogel composites. Desalination 259, 258–264 (2010)
Wang, L.H., Sheng, J.: Preparation and properties of polypropylene/org-attapulgite nanocomposites. Polymer 46, 6243–6249 (2005)
Liu, Y.S., Liu, P., Su, Z.X.: Core-shell attapulgite@polyaniline composite particles via in situ oxidative polymerization. Synth. Met. 157, 585–591 (2007)
Yang, C., Liu, P.: Core-shell attapulgite@polypyrrole composite with well-defined corn cob-like morphology via self-assembling and in situ oxidative polymerization. Synth. Met. 159, 2056–2062 (2009)
Qiu, J.H., Feng, H.: Preparation and properties of PAn/ATTP/PE conductive composites, Trans. Nonferr. Met. Soc. 16, 444–448 (2006)
Lei, X.P., Liu, Y.S., Su, Z.X.: Synthesis and Characterization of organo-attapulgite/polyaniline-dodecylbenzenesulfonic acid based on emulsion polymerization method. Polym. Composite 29, 239–244 (2008)
Chen, H., Zhao, J.: Adsorption study for removal of Congo red anionic dye using organo-attapulgite. Adsorption 15, 381–389 (2009)
Youngman, R.E., Zwanziger, J.W.: On the formation of tetracoordinate boron in rubidium borate glasses. J. Am. Chem. Soc. 117, 1397–1402 (1995)
Gansheimerand, J., Holinsky, R.: A study of solid lubricants in oils and greases under boundary conditions. Wear 19, 439–449 (1972)
Zhang, H.B., Yao, M.H., Jia, Z.F., Liu, Z.L.: The influences of methyl group at C2 position in imidazolium ring on tribological properties. Tribol. Lett. 36, 105–111 (2009)
Jia, Z.F., Xia, Y.Q., Li, J.L., Pang, X.J., Shao, X.: Friction and wear behavior of diamond-like carbon coating on plasma nitrided mild steel under boundary lubrication. Tribol. Int. 43, 474–482 (2009)
Hua, K.H., Liu, M., Wang, Q.J., Xu, Y.F., Schraube, S., Hu, X.G.: Tribological properties of molybdenum disulfide nanosheets by monolayer restacking process as additive in liquid paraffin. Tribol. Int. 42, 33–39 (2009)
This work is supported by Hundreds Talent Program of Chinese Academy of Science.
An erratum to this article can be found at http://dx.doi.org/10.1007/s11249-011-9782-x
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Wang, Z., Xia, Y. & Liu, Z. Study the Sensitivity of Solid Lubricating Additives to Attapulgite Clay Base Grease. Tribol Lett 42, 141–148 (2011). https://doi.org/10.1007/s11249-011-9754-1
- Attapulgite clay
- Solid lubricant additives
- Tribological properties