VISCOUS BEHAVIOUR OF SUPERCOOLED LIQUIDS
VISCOUS BEHAVIOUR OF SUPERCOOLED LIQUIDS
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DOI：
10.1098/rspa.1966.0138
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发表时间：
1966-01-01
影响因子：
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通讯作者：
MATHESON, AJ
中科院分区：
文献类型：
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作者：
BARLOW, AJ;LAMB, J;MATHESON, AJ
在评价由循环剪切应力导出的液体和聚合物的粘弹性行为的测量结果时，我们通常采用约化变量，其中温度的变化以及液体粘度的变化被认为等同于激发剪切波频率的变化（Ferry 1961）。在实践中，它是可取的，以获得实验结果，覆盖整个弛豫区，使弛豫谱可以明确地得出。在高于1 Mc/s的频率下操作的现有实验技术在其应用中限于具有超过约1 P的稳定流动粘度的液体（Barlow，Harrison，Richter，塞甘& Lamb 1961）。对于相对简单的分子结构的液体，因此，兴趣集中在那些可以在过冷状态下进行研究，但很少有结果的粘性行为，这样的液体已被报道。t现住址：埃塞克斯，科尔切斯特，埃塞克斯大学化学系。
In evaluating the results of measurements of the viscoelastic behaviour of liquids and polymers derived from cyclic shearing stress we usually employ reduced variables in which a change of temperature—and hence of the viscosity of the liquid—is regarded as being equivalent to a change in the frequency of the exciting shear wave (Ferry 1961). In practice, it is desirable to obtain experimental results covering the whole of the relaxation region so that the relaxation spectrum can be derived unambiguously. Available experimental techniques operating at fre quencies above lMc/s are restricted in their application to liquids which have steady-flow viscosities exceeding about 1P (Barlow, Harrison, Richter, Seguin & Lamb 1961). For liquids of relatively simple molecular structure, interest therefore centres on those which can be investigated in the supercooled state but very few results for the viscous behaviour of such liquids have been reported. t Present address: Department of Chemistry, The University of Essex, Colchester, Essex.