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                                Capillary Rheology (1 Temperature)


                                Test ID

                                R-011

                                Description

                                This test determines viscosity-shear rate behavior of a material at a particular test temperature. The sample, dried if needed, is loaded into a preheated test barrel of a capillary rheometer. A range of flow rates is used, attempting to cover a shear rate range of 10-10,000 /s. Pressure drop across the die is measured for each flow rate, and viscosity-shear rate data are calculated. Weissenberg-Rabinowitsch corrections are performed.

                                Options

                                Pressure can also be made using a load cell instead of a pressure transducer.

                                Standards

                                • ASTM D3835
                                • ISO 11443

                                Data

                                Shear Viscosity v. Shear Rate. This data appears in Matereality as Capillary Viscosity.

                                Replicates

                                Number of times this test is repeated: 1

                                Samples

                                0.5 kg of pellets [details]

                                Application

                                This test provides a fundamental measure of the flow characteristics of a plastic. Data can describe the dependency of viscosity on shear rate. Tests at multiple temperatures yield temperature dependency of viscosity.

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