Influence of Components on the Rheological Property of Shear Thickening Polishing Slurry

Abstract:

Shear thickening polishing (STP) method was newly developed to achieve high efficient and high quality finishing of complex curved surface. The shear thickening fluid based slurry is one of the key factors in STP process. Viscosity of different shear thickening polishing slurry (STPS) was tested by rheometer in this study. The influences of dispersed particle size and concentration, abrasive material, abrasive particle size and concentration on the rheological property of STPS were analyzed. The results show that smaller dispersed particle (5.5 or 13μm in this study) and relative higher concentration (50-55 wt.%) are better for shear thickening effect of the base fluid. The viscosity of base fluid increases from 0.15-0.3 Pa·s to 0.8-1.1 Pa·s under high shear rate. The participation of Al₂O₃ and diamond abrasive changes the rheological property little, and the viscosity of STPS reaches the highest value 1.8 Pa·s at shear rate 300 s^-1. But SiC abrasive obviously destroys the shear thickening effect. SPTS with different Al₂O₃ abrasive concentration in this study presents almost same viscosity curve. It is inferred that the number of the abrasive particle but not the weight ratio plays the role to effect the rheological property of STPS.

• Periodical: Advanced Materials Research (Volume 1136)
• Pages: 461-465
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1136.461
• Online since: January 2016
• Authors: Bing Hai Lyu*, Wei Tao Dai, Hai Zhou Weng, Min Li, Qian Fa Deng, Ju Long Yuan
• Keywords: Abrasive Particle, Dispersed Particle, Particle Clusters, Rheological Properties, Shear Thickening Polishing Slurry

References

[1] R.A. Jones, W.J. Rupp, Rapid optical fabrication with computer controlled optical surfacing, Optics and Photonics News. 2(12) (1991) 19-19.

DOI: 10.1364/opn.2.12.000019

[2] Y. Mori, K. Yamamura, Endo K, Creation of perfect surfaces, J. of Crystal Growth. 275 (2005) 39-50.

[3] D.D. Walker, A.T.H. Beaucamp, R.G. Binghama, Precessions aspheric polishing: New results from the development programme, Proc. SPIE. 180 (2004) 15-29.

[4] S. Jacobs, S. Arrasmith, I. Kozhinova, An overview of magnetorheological finishing (MRF) for precision optics manufacturing. Ceram. Trans. 102 (1999) 185-199.

[5] T. Kuriyagawa, M. Saeki. K. Syoji. Electrorheological fluid-assisted ultraprecision polishing for small three-dimensional parts. J. of the Int. Societies for Precision Engineering and Nanotechnology. 26 (2002) 370-380.

DOI: 10.1016/s0141-6359(02)00112-5

[6] H. M. Martin, R. G. Allen, J. H. Burge, Fabrication of mirrors for the magellan telescopes and the large. Proc. SPIE, Waikoloa, HI, USA, 2003, p.4837: 1-10.

[7] M. Li, B.H. Lyu, J.L. Yuan, C.C. Dong, W.T. Dai, L. Sun, Shear-thickening polishing method, International Journal of Machine Tools & Manufacture. 94 (2015) 88-99.

DOI: 10.1016/j.ijmachtools.2015.04.010

[8] J.W. Norman, F.B. John. Shear thickening in colloidal dispersions, Physics Today. 10 (2009) 27-32.

[9] F.J.G. Rosales, F.J. R. Hernández, Cross may have tackled the development of An apparent viscosity function for shear thickening fluids,. J. of Non-Newtonian Fluid Mechanics. 166 (2011) 1421-1424.

DOI: 10.1016/j.jnnfm.2011.08.008