ASTM D8491-22 PDF

Scope: 1.1 This test method provides a measure of rheological non-linearity of a rubber compound filled with rCB to assess its reinforcement capabilities. This test method requires the use of a sealed cavity rotorless oscillating shear rheometer for the measurement of the torque with increasing sinusoidal strain applied to an uncured rubber compound containing significant amounts of colloidal fillers, such as recovered carbon black, alone or as blend with virgin carbon black. 1.2 Units—The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. 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. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

ASTM D8491-22 Referenced Document

ASTM D1485 Standard Test Methods for Rubber from Natural Sources-Sampling and Sample Preparation
ASTM D3191 Standard Test Methods for Carbon Black in SBR (Styrene-Butadiene Rubber)—Recipe and Evaluation Procedures
ASTM D3192 Standard Test Methods for Carbon Black Evaluation in NR (Natural Rubber)
ASTM D3896 Standard Practice for Rubber From Synthetic Sources-Sampling
ASTM D6204 Standard Test Method for Rubber8212;Measurement of Unvulcanized Rheological Properties Using Rotorless Shear Rheometers
ASTM D8059 Standard Test Method for Rubber Compounds—Measurement of Unvulcanized Dynamic Strain Softening (Payne Effect) Using Sealed Cavity Rotorless Shear Rheometers

2023 ASTM D8491-23 Standard Test Method for Recovered Carbon Black—Rheological Non-Linearity of a Rubber Compound by Fourier Transform Rheology
2022 ASTM D8491-22 Standard Test Method for Recovered Carbon Black—Rheological Non-Linearity of a Rubber Compound by Fourier Transform Rheology