Keyword: robot arm, traverse robots, rheometer, take out robot, rotorless rheometer, viscometer, mooney viscometers
Rotorless
Rheometer
MDR 2020 Rotorless Rheometer
The curves and characteristic parameters on vulcanization of rubber materials can be obtained using rotorless Rheometer based on the measurement of the torque exerted by the rubber material on the oscillating die.
The MDR 2020 Rotorless Rheometer has excellent property of reappears and stability.In a test with good mixed rubber and the timerange is 12min, the T90 may be several second difference in 4 continual experiments.
Features
● Easy to use the instrument;
● MDR 2020 have automatic door and all of the electric components are CE corresponding.
● Temperature can be increased up to 185℃ within 7.5min,and recovery time when beginning, and recovery time when beginning test will be less 2min.And temperature fluctuation will be within ±0.1℃.
● All instruments adopted the way of PID to control temperature;
● The smallest size and weight in all of the same type instrument in the market;
● The die was designed to international standard ISO;
● With lower noise when working, ≤55db.
Specification:
● Range of temperature control: From room temperature to 200℃;
● Temperature fluctuation in die: ≤±0.1℃;
● Temperature display resolution: 0.1℃;
● Rate of temperature increase:16℃/min-25℃/min;
● Measurement range of torque:0-20Nm;
● Torque resolution:0.001Nm;
● Angle of die oscillation: ±0.5°,±1°,±3°,±5°;
● Frequency of die oscillation:1.67Hz (100r/min);
MR-C3 Test Results:
● ML Min. torque (dNm)—The testing value of sample’s curing characteristics (viscosity) before curing;
● MH Max. torque (dNm)—The testing value of sample’s shearing modulus or rigidity. Including even torque, max. torque for returning curve, and the max. Torque during the specific period of time where no even or returning curve happens;
● Ts1 (min)— when oscillates at the angle of 0.5° or 1°, the relative time when the torque increases to ML +1dNm. This figure shows the scorch time;
● Ts2 (min)— when oscillates at the angle of 3° or 5°, the relative time when the torque increases to ML +2dNm. This figure shows the scorch time;
● T10 (min)—The time when the torque increases to ML + 10 (MH - ML ) / 100dNm. This figure shows the scorch time;
● T50 (min)—The time when the torque increases to ML + 50 (MH - ML ) / 100dNm;
● T90 (min)—The time when the torque increases to ML +90 (MH - ML ) / 100dNm. This figure shows the optimum cure time;
● Ti (min)—The time when the torque increases to ML + i (MH - ML ) / 100dNm;
● Vc—Curing speed index. Vc =100/(T90 – Tsi)
