非标准夹具在复杂流变表征中的应用

传统的旋转流变仪是在理想流动条件（黏度流动）下工作的，使用板椎板或同心圆筒表征复杂材料，尤其在线性黏弹区域更好但往往复杂流体在这种条件下Z难测量的测试或滑动过程中采样工具界面上的沉降有明显的效果，且能够减少仪器的操作范围
Traditional rotational rheometry has been dea领 with ideal flow conditions (viscometric flows) using plate, cone-plate or concentric cylinder geometries to characterize complex materials, preferably in the linear viscoelastic region. Complex fluids, however are often difficult to measure under these conditions. Sedimentation during testing or slippage at the sample-tool interface have a significant effect on the results and reduce the operation range of the instruments. ?Furthermore do viscoelastic flows by no means represent the real flow situation in batch or continuous reactors and processing machines during mixing and/or incorporation of additives, etc. For example, in order to simulate and to understand the gelatinization of starch, a mixing element is used as the standard geometry to avoid sett领 of the non soluble starch particles since the early days of rheological testing. Discovery 流变仪