Electrorheological Behavior of Ni/(TiO2+Urea)Core-shell Nano Particles
Source abstract
Abstract
通过Sol-Gel法制备出Ni颗粒表面均匀包覆尿素掺杂二氧化钛涂层的纳米核壳颗粒Ni/（TiO2＋Urea）,对其电流变行为进行了研究.结果表明颗粒热处理温度和尿素加入量对其电流变活性有较大影响,热处理温度高于320℃以后剪切强度明显降低;尿素与Ti的质量比为30%时,剪切强度达到40kPa（4kV/mm直流电场）,是无尿素时的10倍,但过量的尿素使强度下降.显微镜观察直流电场下电流变液的结构显示,尿素与Ti的质量比为30%时核壳颗粒电流变液形成的柱粗壮、致密,尿素过量时柱产生断裂,无尿素时柱纤细、疏松.尿素中的极性分子是影响Ni/（TiO2＋Urea）颗粒电流变行为的重要因素.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Vibration Control and Rheological Fluids · Dielectric materials and actuators · Vibration and Dynamic Analysis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (10)
Show source-provided references
1. Wu C W10.1088/0022-3727/31/22/021 ↗
2. Yin J B10.1021/cm034787e ↗
3. Block H
4. Whittle M10.1038/358373a0 ↗
5. Lu K Q
6. Tam W Y10.1103/PhysRevLett.78.2987 ↗
7. Shen R10.1142/S0217979205029924 ↗
8. Wu C W10.1016/S0921-5093(98)00497-3 ↗
9. Lu K Q
10. Halsay T C10.1126/science.258.5083.761 ↗