通过两步法制备了氮化铝/乙二醇(AlN/EG)纳米流体，研究了超声分散时间、pH 值、分散剂种类及添加量3种因素对其稳定性的影响。结果表明，超声分散时间太长或太短都不利于流体的稳定性，实验中取30 min 最好；酸溶液的加入使 AlN/EG 纳米流体稳定性急剧恶化；碱溶液的加入也使 AlN/EG 纳米流体稳定性恶化，但速度较酸的加入慢。适量分散剂PVP 的加入能够改善 AlN/EG 纳米流体的稳定性。
AlN/EG nanofluid was synthesized by a two-step method.The influencing factors such as time of ul-trasonic agitation,pH value,amount of dispersant and species on stability of it were investigated.The experi-mental results indicated that the optimal ultrasonic agitation time for improve the stability of AlN/EG nanofluid was 30 min,the addition of acid or alkali will destroy the stability of it,appropriate amount of PVP can improve the stability of it.
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