Rubber Process Analyzer - 9000

Rubber Process Analyzer 9000

ASTM D 5289, ASTM D 6204, ASTM D 6601, ISO 6502, DIN 53529

The RPA-9000 is rotorless rotational shear system with closed test chamber type system according to ASTM, ISO, and DIN. This instrument works with extreme fast temperature recovery and a very good temperature distribution process inside the test chamber and is used for the determination of the viscoelastic behavior of the tested materials.

The RPA 9000 instrument offers a broad range of testing possibilities.  This Instrument is designed for exact measurement of the plasticity of the vulcanization behavior, vulcanization speed and also for measuring the maximum vulcanization with the possibility to calculate the reversion of the compound. Furthermore it is possible to measure the viscous modules and the elastic modules of the test compound. For this the test sample would be deformed by an oscillation from the lower die system. The measuring results, the torque viscous and elastic module as well as temperature of the upper and lower die are displayed on the pc screen and also stored on the hard disk of the PC.

The Rubber Process Analyzer 9000 is an advanced system consisting of a closed test chamber and a dynamic rotational shear system. This advanced system measures the viscoelastic properties of polymers and elastomeric compounds pre-cure, during and post-cure process. The RPA 9000 is able to not only measure elastomers and rubber compounds but is also possible to measure low viscosity materials such as plastics or polyolefin’s. This information helps characterize the processability, the cure characteristics, the cure speed, as well as the behaviour of the compounds. The instrument is designed to be dual purpose, meaning to be used in production and quality control purposes.

The RPA-9000 fulfils the complete range of all test requirements for polymer or raw materials as well as basic, finished and cured compounds. The RPA 9000- is a very price instrument capable of detecting small variations in the mixture. Also the cure properties, characteristics and the processability can be determined and analyzed.

Some of the important advantages for the user:

  • Lower cost per test & better efficiency
  • Faster batch release with only one test for all essential physical characteristics
  • Software enable analysis of cure characteristics and properties can be determined with only one test of one test sample
  • Faster and significantly simplified development cycles
  • No separate sample preparation necessary

For the best possible determination of all relevant test parameters the RPA-9000 is equipped with a large variety of test methods, test parameters as well as calculation and evaluation options.

The following measurements can be determined:

  • Shear modulus: G’ and G’’
  • Complex shear modulus: G*
  • Torque: S’ and S’’
  • Complex torque: S*
  • Dynamic real viscosity: n‘
  • Dynamic imaginary viscosity: n‘‘
  • Dynamic complex viscosity: n*
  • Loss angle: δ
  • Tangent-delta :
  • Pressure (optional)
  • Modulus under extension / compression: E*, E’, E’’
  • Compliance: J*, J‘, J‘‘
  • Compliance under extension / compression: D*, D’, D’’
  • Spring rate: Ks, Kc, Kp
  • Damping coefficient: C

Standard Features:

  • Rugged housing: built with a high performance aluminum with a modern design
  • Instrument structure: friendly access to the electronics as well as the drive system of the instrument. Only highest quality products are used within the instrument.
  • PC-system: Computer set according to latest specification and Windows 7 in English,
  • Drive system: Direct torque drive unit which has been specially developed for dynamic test purposes. Integrated into this drive system are ceramic bearings to reduce friction and significantly improve lifetime of the instrument. Due to this testing frequencies are possible up to 100Hz.
  • Angle measurement: The die movement is directly measured at the torque shaft with a high resolution of 5000 Sin/Cos pulses per turn by rotation transducer
  • Torque measurement via a high precision strain gage unit
  • Software system: modern, state of the art software system with a ODBC- database
  • User friendly operation interface, test programs can be easily generated and edited as well as whole test sequences can be generated within a few clicks.
  • Data processing: All test results are calculated and evaluated online, as well as stored on the hard drive of the computer. The total testing time for one test is nearly unlimited.
  • Data format: All test results are stored in clear format without any form of encryption on the hard drive of the computer. This means all test results can be further processed by a text editor or also by Microsoft Excel. Furthermore the software offers an export functionality to export all test results into common file formats

Technical Specification


ASTM D 5289 / ASTM D 6204 / ASTM D 6601 / ISO 6502 / DIN 53529

Test chamber system

Sealed, Bi-conically closed system

Die gap

0.45mm nominal

Force measurement

Torque and force transducer attached to upper die

Closing system

Damped closed system, pneumatically with non-contact spring elevation system

Oscillation frequency

0.001 Hz to 100 Hz

Oscillation amplitude

±0.001° to 180°

Torque range

0.01 to 230 dNm

Sample volume

approx. 4.5 cm³

Temperature control system

30 °C to 240 °C, Accuracy +/- 0,03 °C each die microprocessor controlled

Temperature control system

Digital readout of the temperature values with online graphical display in the software


Torque (dNm,,, Modules (Pa, dynes/cm², psi), Dynamic Viscosity (Pa s), Temperature (°C, °F), Pressure (bar, kg pro cm²), Time (Min - Min / Min - Sec), Frequency (Hz, cpm) &

Shear rate (1/s, rad/s)

Sub tests

Amplitude Sweep, Frequency Sweep, Temperature Sweep, Shear rate Sweep, Relaxation, Retardation, Hysteresis & Tension test

Air pressure

min 4.5 Bars

Electrical supply

100/110/120/130 VAC +/- 10%, 60 Hz +/- 5 Hz,

10 amps single phase

200/220/240/260 VAC +/- 10%, 50/60 Hz +/- 5 Hz

5 amps single phase


For more information about Rubber Process Analyzer, please call us at 1.877.884.8378 or Click the button below.