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用沉淀法制备了苯胺-草酸氧钛锶(SrTi(C2O4)2)颗粒。FTIR分析表明,苯胺已引入到SrTi(C2O4)2颗粒的表面;XRD分析表明,苯胺-SrTi(C2O4)2颗粒为含少量结晶的无定形态。采用SEM观察颗粒的形貌,结果表明,随反应体系中苯胺与钛原子物质的量比naniline/nTi的增大,苯胺-SrTi(C2O4)2颗粒由近似球状(naniline/nTi=0)变为多面体状(naniline/nTi=2),而后变为棒状与团簇状颗粒的混合体系(naniline/nTi=3)。以苯胺-SrTi(C2O4)2颗粒为分散相制备颗粒质量分数为66.7%电流变液,电流变性能测试结果表明,在naniline/nTi=2时,电流变液具有较高的剪切应力和剪切屈服强度、较大的漏电流密度。苯胺在颗粒制备过程中起控制颗粒形貌的作用,在电流变液体系中起极性分子的作用,其对苯胺-SrTi(C2O4)2电流变液性能的影响是两种效应综合作用的结果。
Aniline - SrTi (C2O4) 2 particles were prepared by precipitation method. FTIR analysis showed that aniline was introduced into the surface of SrTi (C2O4) 2 particles. XRD analysis showed that the aniline-SrTi (C2O4) 2 particles were amorphous with a small amount of crystals. The morphology of the particles was observed by SEM. The results showed that the aniline-SrTi (C2O4) 2 particles changed from nearly spherical (naniline / nTi = 0) to Polyhedral (naniline / nTi = 2), and then into a mixed system of rod-like and cluster-like particles (naniline / nTi = 3). The results of electrorheological property test showed that the electrorheological fluid has high shear stress and shear at naniline / nTi = 2 with aniline-SrTi (C2O4) 2 particles as the disperse phase. Cut yield strength, large leakage current density. Aniline plays the role of controlling the morphology of the particles during particle preparation and plays a role as a polar molecule in the electro-rheological fluid system. The effect of aniline on the rheological properties of the aniline-SrTi (C2O4) 2 electro-rheological fluid is the result of the combination of the two effects .