Revision of D8059-19(2022) Standard Test Method for Rubber Compounds—Measurement of Unvulcanized Dynamic Strain Softening (Payne Effect) Using Sealed Cavity Rotorless Shear Rheometers
Rationale
Only RPA Instruments were included in the calculation of this precision statement that were equipped with special software with advanced, but straight ward data treatment of the force transducer output in the time domain using moving averages in real-time. Ref: RCT, L. Hilliou, D. van Dusschoten,N, M. Wilhelm (Max-Planck Institute), H. Burhin, E. R. Rodger (Alpha Technologies), March 1, 2004. Also referencing ASTM D6600 has more information about statistical test sensitivity which might be useful to the reader.
D8059 P&B Evaluation Parameters
Carbon black only; no silica
Only Labs with EDR = 5 labs = Alpha instruments
Three properties: G’, G”, and tan delta
Use just the first 4 replicates
Sweeps: use 1st, last, and 3 between about equally spaced. (Note to not use 1st data points?)
Work Item Status
Date Initiated: 02-06-2026
Technical Contact: John Dick
Item: 001
Ballot: D11.12 (26-02)
Status: In Balloting