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Apparatus for concurrent measurement of polymer melt |
| T960004 |
Apparatus for concurrent measurement of polymer melt
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| Inventor: |
Neville |
| Date Issued: |
July 5, 1977 |
| Application: |
05/690,313 |
| Filed: |
May 26, 1976 |
| Inventors: |
Neville; Garth E. (Old Hickory, TN)
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| U.S. Class: |
73/54.05 |
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| Abstract: |
a polymer melt's rheological properties are comprehensively described by defining the constants K and n in the rheological equation: T= KG.sup.n where T= shear stress and G= shear rate. The constants are determined by a rheometer which divides a molten polymer sample into two streams pumped by positive displacement pumps having identical speed-displacement characteristics past pressure transducers and finally through dissimilar capillaries to atmosphere. The pressure in each line is regulated at a predetermined level. Pressure and tachometer readings are used to compute the constants K and n. |
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