水对油基磁流体渗入性研究

摘要

The influence of magnetic field, concentration of mannetic particle, and stirring time on the infiltration of deionized and saline water into oil base magnetic fluids were investigated by TGA method. The results showed that the water infiltration into oil-base magnetic fluid increases and decreases with increasing magnetic field and volume fraction of magnetic particles, respectively Compared with the deionized water, the salt water has an unremarkable tends to inhibit water infiltration into oil-base magnetic fluid. But as the scouring time extends, the infiltration rate gradually reduces.%借助热失重分析(TGA)方法研究了外加磁场强度、磁流体中磁性粒子体积分数、试验时间对去离子水和盐水向磁流体中渗入量的影响.结果表明,在水冲刷的条件下,随着外加磁场强度的增高,磁流体内部水含量逐渐增加；随着磁流体中磁性粒子体积分数的增大,渗入磁流体内的水份呈现下降的趋势;水中盐离子的存在将促进水向磁流体的渗入,且随着水冲刷时间的延长,水渗入磁流体内的速率呈缓慢降低的趋势.