Method for determining rheometric parameters of samples and rotational rheometers

摘要

Method for determining rheometric parameters of samples (19) using a rotational rheometer, wherein the thickness (d) of the measuring gap (S) delimited by measuring parts (1a, 1b) is measured with a measuring unit (22) and a predetermined thickness value for a change or adjustment the measuring temperature is adjusted to a predetermined measuring temperature setpoint or readjusted or kept constant, characterized in that - starting with the time (Z) to which at least a portion of a measuring part (1a, 1b) reaches the predetermined measuring temperature (TM) or its temperature has fallen below a predetermined distance to this measuring temperature (TM), for the changing thickness (d) of the measuring gap (S) and / or for the thickness change or - readjustment speed (Δd /, Δt) at predetermined measuring times and / or for predetermined, Measured values are determined by predetermined measuring times, and only if these measured values have a certain predefined threshold value below, the measurement of rheological parameters is started.