本文通过测量SiO2纳米颗粒在不同工质、不同浓度的悬浮液在不同温度下的导热系数,结合了液氮冷冻、切割并在断面上复形的技术,并利用电镜观察了纳米颗粒在液体中的分布、团聚和液体与之的亲和性.着重分析了纳米颗粒悬浮液中SiO2纳米颗粒与液体的亲和性对悬浮液导热性能影响的机理.文中提出了SiO2纳米颗粒的表面吸附层和在作布朗运动时出现"微对流"而使悬浮液换热强化.
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