D-RPA 3000 Dynamic Rubber Process Analyzer

ISO 13145 | ISO 6502 | ASTM D 5289 | ASTM D 6204 | ASTM D 6601 | ASTM D 6048 | ASTM D 7050 | ASTM D 8059 | ASTM D 7605 | DIN 53529

The MonTech Rubber Process Analyzer (RPA) is the most advanced dynamic rubber rheometer for attaining key data on rubber and polymer molecular properties.

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D-RPA 3000 Dynamic Rubber Process Analyzer

Made with the best rheological technologies, MonTech’s RPA is the most accurate and repeatable dynamic rubber testing machine. The MonTech rubber process analyzer reveals valuable data related to raw material or compound molecular properties, processing characteristics, process modeling and problem solving. Post-cure dynamic testing and product environment simulations are also attainable.

Features & Applications

  • Patented MonTech wearless direct torque drive motor
  • Rugged 3000 series machine frame for the most stable readings
  • Highly accurate angular displacement sensor with precision of 0.000001°
  • Fanless and sealed housing
  • Self-diagnostic software
  • 10kHz high speed data sampling rate
  • 10+ Optional Modules
RPA platen with film

Advanced Modules

  • Die Cavity Pressure Measurement System
  • Die Cavity Pressure Controller System
  • Linear Automation
  • Tray Automation
  • MCool 10 Chilled Air Cooling
  • High Speed Data Acquisition System

Die Cavity Pressure Measurement System

The system includes a combined force/torque transducer and a 2-channel amplifier system for real-time simultaneous measurements of torque and force. This system measures the normal force to calculate pressure within the rheometer's die cavity. The force transducer and amplifier are balanced automatically before each test. Measuring the pressure and torque simultaneously is an easy way to quantify the expansion/contraction of the compound before, during, and after vulcanization.

Die Cavity Pressure Controller System

With this option, cavity pressure can also be controlled either to a programmed or an on-line calculated pressure level. The closing force and die gap are designed as a variable, independent axis so that the cavity pressure can be controlled. This system is especially suitable for test sequences that include curing and a cool-down of the sample for a dynamical mechanical analysis. This system can be utilized to compensate for material shrinkage to avoid any slippage in the test chamber. This technology is patented worldwide by MonTech.

Linear Automation

Easily increasing productivity:
Linear automation systems are mainly used for online testing, utilizing a fast and reliable direct conveyor feeder with the lower film as transportation carrier.

 

5 Samples:
This system features automated sample loading and unloading with a linear queue of 5 test samples. This ideally suitable for online testing purposes.

 

10 Samples:
This system is equipped with the same features as the 5 Sample linear loader, but can queue up to 10 test samples, making this system ideally suitable for online testing purposes and for laboratory testing.

 

Linear automation systems are always the preferred choice for very sticky materials such as silicones or glue that sample loading arm systems might not be able to handle.

Autoloading Tray

Tray Automation

Maximum Efficiency
Tray automation systems allow users to queue larger amounts of samples and leave the testing system running totally unattended over long periods. With MonTech's patented direct sample hadling system, sample placement accuracy and test result repeatability is significantly increased. Samples are handled and monitored by a high-volume vacuum system, ensuring perfect sample pickup, transporation and drop-off - even for less than ideal test samples.

24, 48, or 100 Samples Tray
This system features automated sample loading and unloading with a direct tray-to-chamber handling system.

Autoloading Tray

MCool 10 Chilled Air Cooling

Integrated cartridge cooling system that separates the provided air streams into cold (-45°C) and hot (+110°C) fraction to enhance the performance of the machine compared to the standard pneumatic cooling system. This system is especially suitable for testing at or below room temperature in order to provide the most accurate test results as well as correlations with final product application environments. This system is highly recommended for dynamic testing and a must for testing in the ambient temperature range.

 

The vortex tubes are installed in line with the standard pneumatic cooling system.

 

The operation principle of the MCool 10 cooling system is very simple:

 

  • • Air is accelerated and separated in cartridge centrifuges.
  • • Afterwards the cold fraction of the air is used for separate cooling of both test dies down to +8°C.
  • • Only a forced air supply with at least 4 Bars is required — there are no additional chillers or cooling liquids needed. (performance of the cooling systems depends on supplied air)

This technology is patented worldwide by MonTech.

High Speed Data Acquisition System

The high speed DAQ option offers unique result stream resolution as well as an ultimate level of precision for the torque signal and motor position. Both channels are sampled and processed simultaneously with 24 Bit resolution at a data rate of 180KHz. All data streams are provided on the PC and calculated online in realtime kernel. It is also possible to save the raw data streams to the PC’s memory. This makes the system especially suitable for FT-Rheology purposes as well as applications that require precise analysis of material responses in any harmonic.

MCool -40 Chilled Air Cooling

The advanced cooling system features a liquid cooling system with an external chiller unit. The cooling system works as an addition to the pneumatic cooling system. If lower temperatures are required, the chiller unit will begin cooling down the dies to as low as -40°C. Both dies are separately chilled and cooled by the external unit connected to the instrument. The liquid cooling system is able to run anything from sample curing down to glass transition testing.

 

The heating system of the dies remains unchanged; instruments equipped with this chiller unit maintain the functions of a Moving Die Rheometer or Rubber Process Analyzer.

 

This technology is patented worldwide by MonTech

MCool-40

Technical Specifications

Drive System

Direct, wearless servo drive system with ceramic bearings

Oscillation Frequency

0.001 Hz to 100 Hz (0.05 to 6000 cpm)

Oscillation Strain

+/- 0.001° to 360° (+/- 0.14% to 5000%)

Temperature

Ambient to 232 °C, precision +/- 0.03 °C

Measured Data

Torque (dNm, lbf.in, kgf.cm), Temperature (°C, °F), Pressure (bar, kg per cm²), Time (min - min / min - sec / sec), Shear rate (1/s, rad/s), Cure rate (1/min, 1/sec)

Calculated Data

S΄, S˝, S*, G΄, G˝, G*, tan δ, phase angle, cure speed, η΄, η˝, η*, ...

Sample Volume

approx. 4.5 cm3

Die

Gap: 0.45 mm nominal
Configuration: Biconical, closed die system, sealed

Torque Range

0.0001 to 235 dNm | 0.0001 to 208 in.lb

Data Interface

Ethernet (10/100 MBit), USB (int.), CF card (int.), RS232 (optional)

Data Points

Over 3500 data points available for each static subtest; Including S‘ Min, S‘ Max, TS 1, TS 2, TC 10, TC 30, TC 50, TC 90; Integrated, automatic reporting features for dynamic tests

Pneumatics

min. 4.5 Bar / 60 psi

Electrical

200 V - 240 V, 6 Amps, 50/60Hz

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