ASTM D4603 PDF

It is used for polymers that dissolve completely without chemical reaction or degradation and can provide an excellent determination of lot-to-lot consistency or be used to compare molded parts to original resin for determinations of degradation from molding. Test Procedure: The polymer is first weighed and then dissolved in an appropriate solvent. The solution and viscometer are placed in a constant temperature water bath. Thermal equilibrium is obtained within the solution. The liquid is then brought above the upper graduation mark on the viscometer. The time for the solution to flow from the upper to lower graduation marks is recorded.

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It is used for polymers that dissolve completely without chemical reaction or degradation and can provide an excellent determination of lot-to-lot consistency or be used to compare molded parts to original resin for determinations of degradation from molding.

Test Procedure: The polymer is first weighed and then dissolved in an appropriate solvent. The solution and viscometer are placed in a constant temperature water bath. Thermal equilibrium is obtained within the solution. The liquid is then brought above the upper graduation mark on the viscometer.

The time for the solution to flow from the upper to lower graduation marks is recorded. Specimen size: Commonly a sample size of mg. If the material is filled, it is important to specify percent filler. Summary Definitions: Viscosity: The property of resistance of flow exhibited within the body of a material. Relative Viscosity: The ratio of the viscosity of the solution to the viscosity of the solvent.

Relative Viscosity Increment: The ratio of the difference between the viscosities of solution and solvent to the viscosity of the solvent. Reduced Viscosity: The ratio of the relative viscosity increment to the mass concentration of the polymer. Inherent Viscosity: The ratio of the natural logarithm of the relative viscosity to the mass concentration of the polymer. Intrinsic Viscosity: The limiting value of the reduced viscosity or the inherent viscosity at infinite dilution of the polymer.

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miniPVĀ®-HX Hardened Single-Bath Dilute Solution Polymer Viscometer

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ASTM D4603:03

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