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《Materials Review》 2018-S1
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Shear Thickening Properties of PEG Suspensions of PS-AA Particles with Different Degrees of Neutralization

SONG Kaijie;WANG Xiaomei;WAN Hongjing;HUANG Hongjun;Department of Physics and Chemistry,Ordnance Engineering College;Hebei Huanrui Chemical Industry Co.Ltd.;  
Emulsifier free emulsion polymerization was used,with NaHCO_3 as neutralizing agent,respectively,by one step,two step synthesis,two kinds of polystyrene and acrylic particles(PS-AA)were produced,and by scanning electron microscopy(SEM)observation and contrast analysis the morphology of two kinds of particles.The particles dispersed in polyethylene glycol by high-energy ball milling method,preparation of PS-AA/PEG shear thickening fluid(STF),and through the analysis of steady state dynamic rheometer,scanning test shear thickening behavior of the polyethylene glycol suspension,preparation of polymer particles to study using two step method;by infrared spectroscopy,scanning electron microscopy,thermogravimetric-DSC.Laser particle size distribution instrument of different degrees of neutralization particles were characterized by the characterization of the dynamic rheometer suspension rheological properties of polyethylene glycol.The results showed that different degree of neutralization of PSAA core-shell particles was synthesized with smooth surface,uniform particle size,and then shear thickening fluid was prepared,and the optimal degree of neutralization was 45% and 50%,of which 50% neutralization degree of PS-AA particles,the maximum viscosity of polyethylene glycol suspension concentration 64% up to 2 200 Pa·s,the performance in anti external protection field research results in the rise above the common herd.
【Fund】: 国家自然科学基金(51103178)
【CateGory Index】: O632.3
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