Mobile-Menu

TESTING AND MEASURING New Thermoset Capillary Rheometer (TCR) to evaluate Flow and Thermal Behavior of thermosets

Von Masood Khabazian Esfahani, Joachim Sunder, Buchen, Germany 0 min Lesedauer

To evaluate flow and thermal properties of thermosetting materials at pressures comparable to processing operations, a new Thermoset Capillary Rheometer (TCR) is introduced. Material viscosity is measured before curing and during curing.

1 (a) Schematic representation of Thermoset Capillary Rheometer (TCR). The piston is supported by a force transducer. The mold is closed by clamps before injection. (b) The material reservoir and capillary die (c) there are five presser transducers and four temperature sensors installed in the slit mold. The material enters the mold at P0 position. Temperature sensor detects heat flows from the curing sample through the referenc(Bild: Dätwyler, Schattdorf, Schweiz)
1 (a) Schematic representation of Thermoset Capillary Rheometer (TCR). The piston is supported by a force transducer. The mold is closed by clamps before injection. (b) The material reservoir and capillary die (c) there are five presser transducers and four temperature sensors installed in the slit mold. The material enters the mold at P0 position. Temperature sensor detects heat flows from the curing sample through the referenc
(Bild: Dätwyler, Schattdorf, Schweiz)

Capillary rheometer measures flow properties of viscoelastic materials in shear and elongation at high strain rates. Steady-state shear viscosity is measured by pressure difference at the two ends of a capillary or a slit die. Steady-state first normal stress difference is also measured in a capillary rheometer via an addon known as normal stress die.