D-RPA 3000

Dynamic Rubber Process Analyzer

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

Manufactured with the latest advancements in rubber rheological technology, the MonTech rubber process analyzer assists mixers and rubber product manufacturers in taking back control of their materials. The RPA reveals key properties for problem solving including the analysis of raw elastomer or compound molecular properties. Additionally, the RPA will aid in the discovery of processing indicators, vulcanized dynamic performance, process simulations and much more. Where traditional rubber rheology cannot detect challenges or material differences, the RPA finds them, identifies them, and gives users more control on how to use their rubber materials. Whether located in high-end R&D laboratories, production laboratories, or the mixing floor, the MonTech RPA is built for long-term accuracy and reliability.

More choose MonTech around the world for the latest advancements in rubber rheology, and service you can count on.

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D-RPA 3000

Motor Matters

RPA Motor

The heart of the Rubber Process Analyzer is its motor. Where others started, we have advanced the technology forward. Our patented Direct Drive Motor, designed exclusively for RPA applications, enables the largest dynamic range of any RPA. Featuring low friction ceramic bearings, an unbeatable data resolution, and a high-torque gearless actuator, our motor proudly stands out as the best with zero failures globally. Choosing the MonTech RPA means choosing the right motor for long term accuracy and reliability.

  • Oscillatory Strain: 0.0001 – 360 ° Arc
  • Oscillatory Frequency: 0.001 – 100 Hz
  • Optional: Rotations Per Minute 0.01 – 900 RPM

Load. Test. Remove. Repeat.

Tray Automation

Automation should make your life easier, not harder. Production laboratories with high testing throughput depend on reliable automation to match the number tests to accomplish. Engineered robotics, or linear film feeding, guide the sample with ease onto the die cavity where testing may commence.

Automation Types:

  • Tray Autoloader: 24, 48 or 100 samples per tray
  • Linear Autoloader: 5 or 10 sample linear feeding

Industrial Electronics That Endure. Controls That Deliver.

PLC

The leaders in rubber product manufacturing demand the highest standard in industrial electronics. Whether on the mixing line or operating in a QC or R&D laboratory, directing the operation of the RPA, is its PLC. Designed by one of the top three European producers of industrial PLCs, the RPA’s PLC is considered an industrial standard across high-tech industries and advanced automation applications. It’s fully digital with no analogue signal processing. If something goes wrong, the modular concept enables quick replacements if necessary and is available for remote diagnostics.

MDR RPA Frames

Frames Engineered
for Accuracy

The machine frame plays a major role in the long-term accuracy and stability of RPA data. Each MonTech RPA frame is built from aerospace grade aluminum and stainless steel including an 80 mm thick baseplate, 50mm pullrods, an 80 mm crosshead and 20mm thick side panels. This results in a superior frame stiffness which significantly improves repeatability, correlation, reduces damping abilities in high-frequency tests, all the while reducing the signal-to-noise ratio.

Fan-less Design: The frame’s design mitigates any form of potential heat build-up in the electronics cabinet. With no need for fans, and the frame’s sealed housing, carbon black contaminated electronic failures are a challenge of the past.

Technical Specifications

Die Configuration

Biconical, closed die system, sealed

Die Gap

0.45 mm nominal, variable die gap and closing force optional

Sample Volume

approx. 4.5 cm3

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

+/- 0.0001° to 360° (+/-0.0014% to 5032%)

Torque Range

0.0001 to 250 dNm

Normal Force / Pressure (opt.)

0 to 10.000 kPa (1.450 lbin), Auto tare

Temperature Control System

Ambient to 232°C, precision +/-0.03°C
Max. heading and cooling rate: 85°C/min

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, η΄, η˝ and η*, J΄, J˝, J*

Test Programs

Isothermal, non-isothermal, timed, temperature sweep, strain sweep, frequency sweep, shear rate sweep, multi sweep, relaxation, retardation, hysteresis, tension tests, LAOS, steady shear

Data Interface

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

Pneumatics

min. 4.5 Bar / 60 psi

Electrical

200-240 V, 6 Amps, 47-63 Hz, Single phase

Dimensions (H x W x D)

59.84 in x 26.77 in x 23.62 in (152 cm x 68 cm x 60 cm)

Optional Features

  • Easily improve productivity.
    Linear automation systems are ideal for online testing, utilizing a fast and reliable direct conveyor feeder with the lower film as a transportation carrier.

    5 or 10 Samples.
    Ideal for online automated testing, this system features automated sample loading and unloading with a linear queue of either 5 or 10 test samples at a time.

    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.

    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.

    linear autoload
  • 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:

    This technology is patented worldwide by MonTech.

  • MCool -40C

    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

  • 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.

  • 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.

  • LAOS Graph

    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.

  • Take the RPA to the next level but adding the Rotations Per Minute (RPM) Mode to complement the existing oscillatory function. The Advanced Application Package features an adapted drive motor control enabling new features and unique RPA testing capabilities for high-shear and steady shear testing – for advanced characterization of raw materials (such as polymers, silicones, ... ), or compounded materials, under extremely high shear and production relevant conditions:

    AAP Graph
    • Steady Shear RPA subtest available in MonControl Software
    • Main drive with continuous rotation possibility (adapted encoder and rotary flex-joint)
    • Adapted motor and drive controller for higher continuous rating and power
    • Shear rates up to750/reciprocalsec in continuous rotation mode (up to900rpm!) - clockwise or anti-clockwise rotation possibility
    • Variable offsetting and positioning of the drive for static preloads in positive and negative direction(for all kinds of subprograms)
    • Continuous motor position control during the entire test program retaining any pretension loads(motor stays coupled to material entire time, no release of motor torque at any given moment)
    • No more strain limitation for all other subtest types (e.g., Strain Sweep, Frequency Sweep, Matrix, ...)

    (Note: This package cannot be combined withMCool-40)

    • Designed for calibrating RPA Torque
    • Certificate of ISO/IEC17025 Accredited Calibration Included

    RPA torque measurements are performed by a high-resolution DMS strain gage sensor inside the machine which should be calibrated at regular intervals. The MDR Torque Calibration Standard is specifically designed to accurately calibrate this strain gage sensor with a high degree of precision. The concave surfaces of the standard are precision-machined to fit the bi-conical dies of the MDR. This design allows the standard to be self-seating – minimizing cosine error and ensuring accurate and precise calibration.

  • This is a 5.7” QVGA Color LC Touch ScreenDisplay with 10 Touch-Keys, Protections Class IP65 mounted into a rugged holder on the right side of the instrument. Enables quick views into:

    • Main Screen: Set-Values and Test Progress
    • Configuration: Test Parameters (Time, Temperature, Frequency, Angle, etc.)
    • Calculated Test Results with fixed data points
    • Calibration
    • Service Functions
    • Information: Machine Runtime, Versions, etc.
  • Description: The MonTech Kinetics software package allows the calculation of important material data that is required for process modelling and simulation. This includes activation energy, incubation time, and others, for isothermal and non-isothermal cure processes. Based on acquired temperature profiles, an accurate cure and conversion rate simulation can be performed. The additional “Online cure simulation” allows the connection of dataloggers and measurement devices to calculate state of cure while on the shopfloor by acquiring and displaying data from production machinery to directly online.

  • Description: The MonControl Data Management Client is a centralized lab management software (windows based) allowing management of all laboratory data generated by MonTech testing instruments and externally connected by third party devices. In addition, manual entry or import of date from simple serial devices is seamlessly possible and is based on the proven MonControl Database SQL structure.

    • Test Configuration Management: Configure and keep track test configurations, settings, setpoints and tolerance limits.
    • Live View: The new Live View will give real-time numerical and graphical information on lab instruments and activities
    • Result Table: Used for management of results, compiling additional data and further calculations
    • Reporting & SPC: Integrated reports allow advanced generation of reports including result graphs, spreadsheets, XMR, histograms, and other SPC charts on any material. Custom reports may also be added.
    • Data Export: Seamless data exports for external reporting in TXT, excel, pdf, word and many other formats
  • Low-Viscosity Torque Transducer Torque Range: 0.0001 - 52 dNm Max.
    Ultra Low-Viscosity Torque Transducer Torque Range: 0.0001 - 21 dNm Max.

    • Test Dies with Reduced Slippage for LAOS: Specially grooved test dies minimizes slippage during LAOS measurements. The dies - in conjunction with MonTechs’ unique cavity pressure measurement reduces slippage further.
    • Wall-Slip Measurements – With polished, un-grooved dies, the typically considered slip free RPA measurement can be converted into a pressurized rotational rheometer to measure surface slippage, transient and steady shear at process relevant shear rates (up to 750sec-1) closely correlating to extrusion and other critical high shear manufacturing processes.
    • Heat Buildup & Thermal Conductivity: Test dies with recessed grooves allow determination of heat build-up on final compound after cure. Special subroutines with heating and cooling turned off, utilizing Large Oscillatory Strains or constant shear rates at a defined rotation speed allows heat build-up and then measured with the lower die temperature sensor.
    • Composite Materials, Resins & Prepregs: Modern aircraft and electric car manufacturing would not be possible without them. Manufacturing integrated testing ensures process consistency and component safety.
    • Thermoplastic Elastomers (TPEs): Dies designed for continued on Thermoplastic Elastomers. The handle of your bike, the pen in your fingers, the mat in your car, etc.
    • Characterization of Gel Time of Thermosets: FMC, SMC, BMC, Bakelite, phenolic or epoxy resins - we have the right solution for your materials and processes!
    • Other Thermoplastics: Our testing technology speeds up the digital transformation: Closed loop process rheological control of XLPE materials accelerates manufacturing of e.g. sub-sea fiberoptic cables.
    • Food Testing: Soft, Chewy or Yummy? Our test routines and die setups adapted to the food industry will tell you!
  • Max die temperature increased to 250°C

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Experts
Experts in Lab Equipment:

The fastest growing rubber testing equipment manufacturer.
13,000 instruments delivered since 1998.

Innovation
Leaders in Innovation:

Labs evolve.
So should technology in the instruments.

Team
The Team You Can Count On:

Speak to real people who understand your account.
Every time.

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Dedicated Support:

Service, software and applications specialists are on standby.
And on your time zone.

Quality
Quality Forward:

ISO / IEC 17025 Accredited
ISO 9001:2015 Certified