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首页> 外文会议>7th Biennial Conference on Engineering Systems Design and Analysis 2004(ESDA 2004) vol.3: Design Engineering; Maintenance Engineering; Manufacturing Engineering; ... >A MICRO-FLUIDIC REAL-TIME MONITORING OF THE DYNAMICS OF POLYMERIC LIQUIDS
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A MICRO-FLUIDIC REAL-TIME MONITORING OF THE DYNAMICS OF POLYMERIC LIQUIDS

机译：聚合物液体动力学的微流实时监测

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Manipulating liquid fluids within networks of micro-channels is crucial in the fabrication of micro-fluidic devices for electronic and for medical applications, as well as for the fundamental understanding of the fluid dynamics properties in geometrical confined systems, in which localization phenomena and surface effects can strongly affect the fluid behaviour. A detailed analysis of the fluid dynamics properties is particularly important for glass-forming liquids, polymeric solutions or bio-fluids, which do not behave as Newtonian fluids, due to the the elasticity of the molecules. For these materials the determination of the structural dynamical parameters is not trivial, requiring the solution of a complex many body problem and the introduction of non-linear mechanical parameters. In this work we have provided a micro-fluidic approach to assess the structural rheolog-ical parameters of a glass-forming liquid under real operation conditions. The method was applied to a viscoelastic polymeric liquid, polyurethane (PU) adhesive, during its driving flow in a micro-capillary network.
机译：在微通道网络中操纵液体流体对于制造用于电子和医疗应用的微流体设备以及对几何约束系统中的流体动力学特性的基本理解至关重要，在该系统中，局部现象和表面效应会严重影响体液行为。对流体动力学特性的详细分析对于形成玻璃的液体，聚合物溶液或生物流体尤其重要，由于分子的弹性，它们不能像牛顿流体那样发挥作用。对于这些材料，确定结构动力学参数并非易事，需要解决复杂的多体问题并引入非线性机械参数。在这项工作中，我们提供了一种微流体方法来评估在实际操作条件下玻璃形成液的结构流变学参数。在微毛细管网络中的驱动流动过程中，将该方法应用于粘弹性聚合物液体聚氨酯（PU）粘合剂。

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