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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China viscose waste China 50 cotton 50 viscose China 65 polyester 35 viscose. The test data can be saved automatically.

ASTM D1646 Rubber Rheometer Mooney Viscometer

Reference values do not exist for this test method since the value of the test property is exclusively de? R1646 6—If the viscometer has a seal between the rotor stem and the die, frequent zero adjustment may be necessary because of a change in friction between the rotor stem and the seal.

The minimum viscosity and the times for the viscosity to increase by speci? Sheet the specimen on the tenth pass.

Mooney viscosity is de? These precision parameters should not be used for acceptance or rejection testing of any group of materials without documentation that they are applicable to those particular materials and the speci?

Then stop the rotation of the disk. Either situation will result in undue leakage and erroneous results. When the large rotor is used the increase is 35 units and the time is designated t The curing characteristics reported in The small rotor shall conform to the large rotor except the diameter shall be The dimensions of the die cavity, measured from the highest surfaces, shall be 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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China viscose yarn China viscose crepe fabric China viscose elastane fabric. The large rotor should be used unless the Mooney viscosity would exceed the capacity of the instrument, or when slippage occurs or is suspected.

Computer control, Data display, Automatic calibration 2.

The permissible tolerance shall be Over the range of parameter values levels there is a general increase in r and R as the mean level increases. This can result in different viscosity values for some rubbers. The serrations of the dies shall consist d646 two sets of such grooves at right angles to each other.

The dimensions of the shearing disk viscometer, test temperatures, and procedures for determining Mooney viscosity are defined in these test methods. The viscometer shall be adjusted so that it will read zero torque when run empty and 6 0. Not exactly what you want? The rotor head shall be securely mounted perpendicularly to a suitable straight cylindrical stem not exceeding 11 wstm 0.

Not exactly what you asrm Immediately fold the specimen in half and inserted the folded end into the mill for a second pass. E Use a temperature of 6 0. Historical data can be added together to analysis and can be printed out.

ASTM D1646

The dimensions of the shearing disk viscometer, test temperatures, and procedures for determining Mooney viscosity are defined in these test methods. Used to Raw rubber or rubber compound for the determination of Viscosity, scorch and curing index.

For most rubbers, the viscosity value obtained will not be altered appreciably by permitting the specimen to warm in the machine for different times, provided that satm viscosity is read at a speci? This test method describes how pre-vulcanization properties may be measured.

The temperature measuring system shall consist of platinum resistance temperature sensors, thermocouples, or thermistors. This was a Type 1 precision program; all samples were presented by a single laboratory, and tested without mill massing. Viscosity as used in these test methods is not a true viscosity and should be interpreted to mean Mooney viscosity, a measure of shearing torque averaged over a range of shearing rates.

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Testing Standards List

Record the following information: This can result in different viscosity values for some rubbers. Immediately insert the rubber without folding into the mill for a tenth pass. Modify the time during testing 5. Computer control, Data display, Automatic calibration, Imported intelligent digital temperature controller.

Mooney viscosity is defined as the shearing torque resisting rotation of a cylindrical metal disk or rotor embedded in rubber within a cylindrical cavity. Mooney viscosity is defined as the shearing torque resisting rotation of a cylindrical metal disk or rotor embedded in rubber within a cylindrical cavity.

The resistance to this rotation offered by the rubber is measured in arbitrary torque units as the Mooney viscosity of the specimen. In addition to a few insigni? The test data can be saved automatically 6. Therefore, this test method can be used to measure incipient cure scorch time and the rate of cure during very early stages of vulcanization. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

Specifications Computer control, Data display, Automatic calibration, Imported intelligent digital temperature controller. Integrated die cavity, high accuracy. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.