| 摘要 |
<p>The invention is a device and a method for measuring viscosities of very small samples of resins, polymers or other viscous materials as a function of temperature or time of heating. The device comprises two coaxial cylindrical members held in alignment by a cage member such that the plastic sample of small mass may be held between the cylinders under constant pressure either at constant temperature or with a programmed temperature change. The pressure and temperature control and the continuous measurement of the change of thickness of the sample due to viscous flow are provided by a modern thermomechanical analyzer.</p> |
