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AssigneeMonsanto Company
InventorsRobert I. Barker, David P. King, Patrick F. Rice
Estimating the term…
The rheological properties of an extrudable material can be measured by extruding a strand of the material, measuring its diameter continuously, to give a series of diameter values, interpreting the variations in the strand diameter so as to characterize the surface of the strand, and deriving rheological data from the surface characteristics of the strand. The variations in the strand diameter can be interpreted as to peak-to-peak amplitude, average diameter value, the frequency of significant extreme values, standard deviations from a mean value, and the like. By means of these mathematical characterizations, the rheological behavior of the extrudable material can then be derived. The scorch behavior of a curable elastomer can be measured. The heterogeneity of a rubber compound can be described, or the macromolecular properties of a polymer can be measured (such as "gel", or degree of cross-linking.)
The method of measuring the rheological properties of an extrudable material comprising the steps of
The method of measuring the rheological properties of an extrudable material comprising the steps of
The method of measuring the scorch time of an extrudable vulcanizable rubber compound comprising the steps of
Apparatus for measuring rheological properties of an extrudable material, comprising in combination:
Apparatus for measuring rheological properties of an extrudable material, comprising in combination:
Dependencies are inferred from the claim text.