The TCR is a capillary rheometer for thermosets which is developed for quality testing of thermosets in order to test and compare material batches with regard to processing properties. The instrument is developed on the knowhow of the established method of capillary rheometers for plastics and elastomers.
The TCR is developed based on a capillary rheometer with 75kN piston force. The device also consists of a piston / die plate with test channel and a mould (flow spiral). To be able to easily remove the cured test material, the test channel is integrated into a conical seat in the die plate, which is divisible and easily removable. The insulation of the die plate from the upper half of the mould allows to set different temperatures between the mould and the die.
The instrument can measure at both constant pressure and constant speed. The instrument consists of a temperature-controlled feed channel in which the material is preconditioned under defined pressure and volume at a preselected temperature and pressed into a flow spiral with up to 5 pressure and 4 gradient temperature sensors at a pressure of up to 1600bar.
The TCR allows an effective determination of the rheological properties in the range of the injection temperature and over the flow path in the mold at crosslinking temperature.
for effective analysis of free-flowing thermoset mixtures
The method of measuring the melt viscosity with the capillary rheometer is simple and avoids the environmentally hazardous solvents.
Large Amplitude Oscillatory Shear (LAOS) – Expanded ability to characterize polymers and polymer mixtures with FFT delivers high selectivity