MEASUREMENT OF BULK VISCOSITY BY TENSILE CREEP METHOD
测定本体粘度的拉伸蠕变方法

The data treatment in viscosity measurement by tensile creep method was discussed. A method which may be used for polymer samples with high viscosity and low modulus was proposed. The measurements of two poly-cis-1,4, butadiene samples showed that due to the difficulty to avoid wholly the influence of elastic deformation during the creep process of these samples, the previous method which was based on the assumption of the establishment of a pure steady flow state would deviate the viscosity values to one order of magnitude lower.