Rotorless curemeters

The Gottfert Elastograph uses a 4.2 cm radially grooved round sample, an oscillation frequency of 50 cpm, a range of angular amplitudes, and temperature control to 230°C. 

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The reciprocating paddle instrument is now largely a matter of history and a third type, the rotorless curemeter, has rapidly become the most popular. The rotorless type is a curemeter in which one half of the die enclosing the test piece, rather than a paddle or disc within the test piece, oscillates or reciprocates (Figure 6.7). 

A similar estimate of cure time is taken from an oscillating paddle or rotorless curemeter curve. 

ASTM D 5289111 for rotorless curemeters, although rather more specific, is overall very similar to ISO 6502 in technical requirements. The British standard"2 is identical to ISO 6502. 

Sezna, J. A.. Pawlowski, H. A., and DeCoinck, D., New test results from rotorless curemeters. 136th Meeting of the ACS Rubber Division, Fall 1989, pp. 6 12. 

Figure 9.7 Moving die rheometer (Monsanto). A pressurised rotorless curemeter for rubber. 9.6.5 Variable-torque rheometers...

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