排序方式: 共有8条查询结果,搜索用时 156 毫秒
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破乳剂的油-水界面性质与破乳效果的关系 总被引:1,自引:0,他引:1
本文通过对界面张力、液滴寿命和破乳效果的测定,研究了各种原油破乳剂的界面活性、破乳剂叶分子在油-水界面上的吸附状态和液膜强度与破乳效果的关系。油水两相均不溶的破乳剂,可在油-水界面上展开,置换原油中成膜物质,降低膜强度而使乳状液破坏。 相似文献
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对Pluronic、AP型、AE型3种聚氧乙烯-聚氧丙烯嵌段共聚物系列的泡沫稳定性及消泡性能进行了测定。结果表明,它们的泡沫稳定性都较差,但有较好的消泡作用。AP型是较好的消泡剂,AE型及Pluronic中聚氧丙烯含量较高的品种亦有很好的消泡能力。 相似文献
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用液晶模板合成有序中介结构的无机材料 总被引:1,自引:0,他引:1
讨论了以溶致液晶为模板合成中孔无机材料的新方法,复合的表面活性剂一无机物组合体的结构取决于无物的性质以及它同表面活性剂的静电和立体空间的相互作用。阐明了转录作用和协同作用两种形成机制,转录合成中稳定的、预组织的有机结构被用作无机材料进行沉积的模板;协同合成中,模板是经无机前体与有机分子之间协同作用形成的有机一无机共组合体。说明了通过调节表面活性剂链长、有机添加物、实验温度和反应时间以及助溶剂来控制 相似文献
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A device of mercury liquid bridge of floating half-zone is designed to experimentally explore thermo-capillary convection and its instability of a low Prandtl number liquid. Noncontacted diagnostic techniques were developed to monitor surface flow and surface deformation. The surface flow and the influence of a growing surface film (or skin) on the flow were observed It is shown that the film is a key factor in changing the behavior associated with the thermocapillary convection. The experiment indicates that the critical Marangoni number should be much higher than that expected by the numerical simulation. The condition and process of surface film growth are discussed. The surface oscillation of the mercury bridge wrapped with "dirt-film" was observed, and the characteristics and the frequency associated with this oscillation are given. 相似文献
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