不同体积分数羰基铁粉对磁流变液性能的影响
发布时间：2018-11-27 12:50
【摘要】：以羰基铁粉为磁性颗粒,二甲基硅油为载液,十二烷基硫酸钠为表面活性剂,纳米SiO2和聚乙烯吡咯烷酮为添加剂,通过搅拌分散的方法制备出4份不同体积分数的羰基铁粉的磁流变液。通过自然沉降观测法和MCR-301模块化智能型流变仪检测磁流变液的沉降稳定性、零场黏度和磁流变性能。结果表明:铁粉体积分数为35%的磁流变液具有最低的沉降率、为8.6%,有最大的剪切应力、为31.33kPa,但零场黏度也相对较大、为4.4Pa·s,静置2个月后没有板结;而铁粉体积分数为20%的磁流变液具有最高的沉降率、为17.7%,最低的零场黏度、为0.8Pa·s,最小的剪切应力、为7.48kPa,静置2个月后轻微板结,轻微搅拌后又重新分散于载液中。在工程应用方面,铁粉体积分数较大的磁流变液使用效果相对较好。
[Abstract]:Using iron carbonyl powder as magnetic particle, dimethyl silicone oil as carrier solution, sodium dodecyl sulfate as surfactant, nanometer SiO2 and polyvinylpyrrolidone as additives, Four parts of magneto-rheological solution of carbonyl iron powder with different volume fraction were prepared by agitation and dispersion. The settlement stability, zero field viscosity and magnetorheological properties of magnetorheological fluid were measured by natural settlement observation method and MCR-301 modularized intelligent rheometer. The results show that the magnetorheological fluid with 35% volume fraction of iron powder has the lowest settlement rate of 8.6, the largest shear stress is 31.33 KPA, but the zero-field viscosity is relatively large, which is 4.4Pa s. However, the magnetorheological fluid with 20% volume fraction of iron powder had the highest settling rate of 17.70.The lowest zero field viscosity was 0.8Pa s, and the minimum shear stress was 7.48kPa. Slightly stirred and then dispersed again in the carrier liquid. In engineering application, the magneto-rheological fluid with high volume fraction of iron powder has a relatively good effect.
【作者单位】： 大连大学物理科学与技术学院;
【基金】：国家自然科学基金资助项目(51077006) 辽宁省大学生创新训练项目(201511258028) 大连大学教改项目(2013G3-139);大连大学大学生创新创业训练计划重点项目(2014093)
【分类号】：O37
[Abstract]:Using iron carbonyl powder as magnetic particle, dimethyl silicone oil as carrier solution, sodium dodecyl sulfate as surfactant, nanometer SiO2 and polyvinylpyrrolidone as additives, Four parts of magneto-rheological solution of carbonyl iron powder with different volume fraction were prepared by agitation and dispersion. The settlement stability, zero field viscosity and magnetorheological properties of magnetorheological fluid were measured by natural settlement observation method and MCR-301 modularized intelligent rheometer. The results show that the magnetorheological fluid with 35% volume fraction of iron powder has the lowest settlement rate of 8.6, the largest shear stress is 31.33 KPA, but the zero-field viscosity is relatively large, which is 4.4Pa s. However, the magnetorheological fluid with 20% volume fraction of iron powder had the highest settling rate of 17.70.The lowest zero field viscosity was 0.8Pa s, and the minimum shear stress was 7.48kPa. Slightly stirred and then dispersed again in the carrier liquid. In engineering application, the magneto-rheological fluid with high volume fraction of iron powder has a relatively good effect.
【作者单位】： 大连大学物理科学与技术学院;
【基金】：国家自然科学基金资助项目(51077006) 辽宁省大学生创新训练项目(201511258028) 大连大学教改项目(2013G3-139);大连大学大学生创新创业训练计划重点项目(2014093)
【分类号】：O37
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