Electrorheological Properties of Suspensions of Inorganic Shell/Organic Core Composite Particles
Electrorheological Properties of Suspensions of Inorganic Shell/Organic Core Composite Particles
复制标题
无机壳/有机核复合颗粒悬浮液的电流变性能
DOI：
10.1006/jcis.1994.1413
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发表时间：
1994
影响因子：
9.9
通讯作者：
K. Edamura
中科院分区：
文献类型：
--
作者：
Y. Otsubo;K. Edamura
摘要采用悬浮聚合法制备由聚合物核和无机物壳组成的复合粒子。悬浮液的电流变（ER）行为的研究与表面条件。当复合颗粒受到射流搅拌时，电流变效应显著增强。虽然聚合物颗粒上的无机壳层是造成ER效应的原因，但聚合反应产生的杂质必须从表面除去。悬浮液是不导电的，即使聚合物芯被导电颗粒包覆。在复合颗粒中，聚合物的薄层防止在聚合物芯上以层布置的无机颗粒的直接接触。由于复合颗粒的密度与油的密度相当，因此悬浮液具有抗沉降的长期稳定性。
Abstract Composite particles consisting of a polymer core and inorganic shell are formed by suspension polymerization. The electrorheological (ER) behavior of the suspensions is studied in relation to surface conditions. When the composite particles are subjected to jet-stream agitation, the ER effects are strikingly enhanced. Although the inorganic shell on the polymer particles is responsible for the ER effect, the impurities which were derived from the polymerization reaction must be removed from the surfaces. The suspensions are nonconducting, even though the polymer cores are coated with conducting particles. In composite particles, the thin layer of polymer prevents direct contact of inorganic particles which are arranged in layers on the polymer core. Since the density of composite particles is comparable to that of oil, the suspensions have long-term stability against sedimentation.