Abstract: Nano silica particles (nano-SiO2 particles) with diameter of 12nm and 2μm used as the dispersed phase and PEG-200 used as the dispersion medium,shear thickening fluid (STF) with different system was prepared by mechanical stirring and ultrasonic shock.The morphology and agglomeration of nano-SiO2 particles were observed by JEM-2100(HR) type transmission electron microscopy,and the steady state and dynamic rheological properties of STF were tested by DHR rheometer.The results showed that the agglomeration of particles with diameter of 12nm was obvious,and that of 2μm was not obvious.The viscosity of STF exhibited firstly thinning and secondly thickening with the increase of shear velocity,which manifested as non-Newtonian fluid properties.The critical viscosity increased and critical shear velocity decreased of STF with increasing the concentration of particle.Shear thickening effect of particles with 12nm was better than that with 2μm.
范佳慧,曹海建,徐山青,陈红霞,黄晓梅. 不同粒径剪切增稠液的制备及流变性能研究[J]. 化工新型材料, 2018, 46(10): 170-172.
Fan Jianhui,Cao Haijian,Xu Shanqing,Chen Hongxia,Huang Xiaomei. Study on preparation and rheological behavior of shear thickening fluid with different particle diameter. New Chemical Materials, 2018, 46(10): 170-172.
[1] 庞娟.纳米药水制造超级防弹衣[J].现代物理知识,2008,20(1):51. [2] 汤胜博,孙建科,常鹏北,等.纳米材料在防弹衣上的应用[J].材料开发与应用,2009,24(2):60-61. [3] Hassan T A,Rangari V K,Jcclani S.Sonochcmical synthesis and rhcological properties of shear thickening silica dispersions[J].Ultrasonics Sonochcmistry,2010,17(5):917-952. [4] Hassan T A.Synthesis,processing and characterization of shear thickening fluid(STF) impregnated fabric composites[J].Materials Science and Engineering A,2010(527):2892-2899. [5] Lee Y S,Wagner N J.Dynamic properties of shear thickening colloidal[J].Rheologica Acta,2003,42(3):199-208. [6] Lee Y S,Wetzel E D,Wagner N J.The ballistic impact characteristic of Kevlar(R) woven fabrics Impregnated with a colloidal shear thickening fluid[J].Journal of Materials Science,2003,38(13):2825-2833. [7] Maranzano B J,Wagner N J.The effects of particle size on reverible shear thickening of concentrated colloidal dispersions[J].Journal of Chemical Physics,2001,114(23):10514-10527. [8] Maranzano B J,Wagner N J.The effects of interparticle interactions and particle size on reversibleshear thickening:hard sphere colloidal dispersions[J].Journal of Rheology,2001,45(5):1205-1222. [9] Egres R G,Wagner N J.The rheology and microstructure of acicular preciptated calcium carbonatecolloidal suspensions through the shear thickening transition[J].Journal of Rhrology,2005,49(3):719-746. [10] 蒋玲玲.剪切增稠液体在柔性防刺材料中的应用研究[D].无锡:江南大学,2011. [11] 俞科静,沙晓菲,曹海建,等.剪切增稠液/高性能纤维复合材料防刺性能的研究[J].玻璃钢/复合材料,2012(6):47-51. [12] 伍秋美,阮建明,黄伯云.低固相含量SiO2分散体系流变性研究[J].化学学报,2006,24(15):1543-1547. [13] 马勇,陈宏书,王结良.基于剪切增稠液体防护装甲的研究[J].高分子通报,2012(6):49-53. [14] Falcon C,Bruggeman J,Pasquali M,et al.Localized structures in vibrated emulsions[J].EPL(Europhysics Letters),2012,98(2):24002. [15] 俞科静,沙晓菲,曹海建,等.表面改性二氧化硅粒子对剪切增稠液的影响[J].玻璃钢/复合材料,2012(4):23-27. [16] Femandez N,Mani R,Rinaldi D,et al.Microscopic mechanism for shear thickening of non-browian suspensions[J].Physical Review Letters,2013,111(10):108301.
2018, Vol. 46 
