ASTM D1646 PDF

This standard is issued under the fixed designation D ; the number 1 These test methods are under the jurisdiction of ASTM Committee D11 on. CCSi Ultra-Life Specimen Cutting Dies: ASTM D D Upper Specimen Die. D Lower Specimen Die. CCSi manufactures these high quality. Standard Astm d – Download as PDF File .pdf), Text File .txt) or read online.

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Other temperatures may be used if desired. This piece should be cut in a way that will minimize work on the sample.

ASTM D1646 Rubber Rheometer Mooney Viscometer

Better repeatability within labs and reproducibility between labs is normally obtained on unmassed specimens. ASTM D e1. These test methods include procedures for measuring the initial rate of rubber vulcanization.

This can result in different viscosity values for some rubbers.

The maximum test time: The dimensions of the die cavity, measured from the highest surfaces, shall be For these higher molecular mass rubbers, better correlation between viscosity values and molecular mass is obtained if the test temperature is increased. Thus both of these tests are important and complement each other.

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ASTM D1646 rubber rheometer mooney viscometer

Imported integrated circuit and control components. The relaxation data shall be collected starting typically 1 s after the rotor is stopped, and continuing for at least 1 min and typically for 2 min after the rotor is stopped. Immediately fold the specimen in half and inserted the folded end into the mill for a second pass. The resistance to this rotation offered by the rubber is measured in arbitrary torque units as the Mooney viscosity of the specimen. The large rotor should be used unless the Mooney viscosity would exceed the capacity of the instrument, or when slippage occurs or is suspected.

The viscosity of vulcanizable rubber compounds is recorded during heating at a speci? The grooves shall be vertical and shall be cut on 1. The Mooney viscosity is measured by a metal disk embedded in a rubber specimen contained in a rigid cylindrical cavity maintained at a speci?

Historical Version s – view previous versions of standard Translated Version s: Contact Supplier Start Order. The eccentricity, or runout, shall not exceed 0.

Specifications Computer control, Data display, Automatic calibration, Imported intelligent digital temperature controller. Test aztm are 6 0. Bias, therefore, cannot be determined. The minimum viscosity and the times for the viscosity to increase by speci? The torque measuring system shall record the torque during the relaxation test at minimum rates of one reading each second for the?

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Viscosity and stress relaxation behavior do not depend on such factors as molecular mass and non-rubber constituents in the same way. The viscometer shall be adjusted so that it will read zero torque when run empty and 6 0.

Therefore, a torque of 0. China cup viscometer China rotating viscometer China flow cup viscometers.

Testing Standards List

A slow rate of relaxation indicates a higher elastic component in the overall response, while a rapid rate of relaxation indicates a higher viscous component. Mooney viscosity is defined as the shearing torque resisting rotation of a cylindrical metal disk or rotor embedded in rubber c1646 a cylindrical cavity. Mooney viscosity test precision was compared for samples prepared with and without mill massing. The surfaces of the die cavity shall either be serrated or contain V-grooves to minimize slippage of the specimen.

Viscosity interlaboratory precision testing was conducted at two different times; Program 1 in the?

Reference values do not exist for this test method since the value of the test property is exclusively de?