e-VROC™粘度计/流变仪

能够测量表观拉伸粘度的粘度计e-VROC™可测量聚合物溶液的拉伸流量，以帮助您了解和优化您的工业流程。通过监视测量池中微流体收缩中的样品流量，e-VROC™提供了精确的表观拉伸粘

能够测量表观拉伸粘度的粘度计e-VROC™可测量聚合物溶液的拉伸流量，以帮助您了解和优化您的工业流程。通过监视测量池中微流体收缩中的样品流量，e-VROC™提供了精确的表观拉伸粘度数据。

由于拉伸流动会极大地影响聚合物分子和不对称颗粒的行为，因此了解拉伸粘度可以帮助您改善工业流程。借助准确的数据，您可以深入了解流体的成分，预测该成分对过程的影响，并根据数据显示的特征优化过程。

采用Rheosense的专利VROC®技术构建的e-VROC™是同时测量拉伸粘度和剪切粘度的出色工具。

粘度计使用MEMS压力传感器测量收缩上游和下游的压力，并记录流量变化。流体通过收缩/膨胀经历几乎恒定的拉伸，从而能够计算表观拉伸粘度。

e-VROC™芯片设计有宽度和深度均一的微流体通道。它在通道的中间具有双曲线的收缩/扩展区和四个单片集成的MEMS压力传感器（收缩/扩展区的上游两个，下游的两个）。进入通道的液体首先在直通道中经历剪切流，然后在收缩区域中经历均匀的扩展，如以下示意图中正方形的伸长形状变化所示。

与其他拉伸粘度测量方法相比，e-VROC™可以在高拉伸速率下测量拉伸粘度。

粘度计规格
最小样品量	500μL
粘度范围	10-2,000 mPa-s
延伸率	0.1 - 1000 s^-1
温度范围	4-70°C
温度稳定性	〜+/- 0.07°C
拉伸粘度	是
精准度	〜+/- 0.5％读数
剪切扫描	是
温度扫描	是
典型测试时间	<1分钟

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