SYMPOSIA PAPER Published: 23 March 2020

Vulcanization Characteristics of Natural Rubber


The present classification program for natural rubbers has been handicapped by the lack of adequate means to characterize their behavior on vulcanization. Several methods have recently been proposed for this purpose. Roth and Stiehler (9)2 in 1948 described the strain test from which three vulcanization parameters can be calculated. Two of these parameters have been combined by Schade (10). Thirion (12) in 1951 proposed a method for calculating two parameters from the customary measurements of stress at 600 per cent elongation. Gee and Morrell (5) have recently suggested a procedure for determining two parameters from measurements of Mooney viscosity and stress at 100 per cent elongation. Workers at The B. F. Goodrich Co. (8) have proposed the use of the Mooney viscometer for determining two parameters.

Author Information

Stiehler, Robert, D.
National Bureau of Standards, Washington, D. C., US
Roth, Frank, L.
National Bureau of Standards, Washington, D. C., US
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Developed by Committee: D11
Pages: 50–78
DOI: 10.1520/STP13619530006
ISBN-EB: 978-0-8031-8089-5