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Gibitre Instruments' Mooney viscometer measures Mooney viscosity, pre-polymerization (scorch), and stress relaxation in polymers and rubber compounds. The test determines the torque required to keep a rotor turning in a cylindrical chamber filled with rubber under controlled pressure, temperature, and speed—the resistance is the Mooney viscosity. It belongs to the suite of laboratory tools for the precise measurement of materials where repeatability is essential.
Why choose it: test chamber and rotor conform to ISO 289-1, ISO 289-2, ISO 289-4 and ASTM D1646, ASTM D3346; precise control via independent temperature controllers (0.1 °C resolution) and a compressed-air cooling circuit to minimize time between measurements; self-calibration with internal weight, pneumatic rotor ejection, touchscreen interface, and status lights for fast, safe operation.
For data management, Mooneycheck supports barcode sample ID and, with Datagest, full management of the Gibitre SQL database.
Options ext
The MooneyCheck - Drive is a Mooney Viscometer, which permits to measure the Mooney viscosity, Pre-curing (scorch) and Stress Relaxation Characteristics of uncompounded or compounded rubbers In conformity with ISO 289-1, ISO 289-2, ISO 289-3, ASTM D 1646 Standards.
The test is carried out by measuring the torque, which has to be applied under specified temperature and pressure conditions, in order to rotate a metal disc at 2rpm speed in the cylindrical test chamber filled with rubber.
The resistance offered by the rubber to this rotation is expressed as the Mooney viscosity of the test piece.
• Entirely developed and produced in Italy
• Test chamber and rotor compliant with international standards
• Pneumatic Rotor Ejection
• Primary brand components
• Internal weight for self-calibration of the torque measurement
• Independent thermoregulators with a resolution of 0.1 °C
• Interactive touch-screen display for instrument control
• Optional control of rotor rotation speed
• Easily accessible test chamber with transparent safety panel and safety lock.
• Designed for eventual application of a fume aspiration system.
• Full license of MooneyCheck_10 software optimized for barcode sample identification
• Full license of the Datagest software for the complete management of the Gibitre SQL Standard Database
The new generation of 'Drive' instruments is the result of 40 years of experience in the measurement of rheology of rubber and incorporates the most modern technologies regarding mechanical construction, measurement sensors and control software.
The MooneyCheck_10 program connects to the Gibitre SQL database to store test Results and Curves within the Datagest data management program.
The program allows you to:
• Quickly identify the sequence of tests to be performed
• Automatically adjust the instrument according to the required test conditions
• Produce the test Curves (Viscosity, Scorch, Stress Relaxation, Temperature)
• Compare the results with the tolerance limits
• Elaborate statistical analysis (Carta-X, Gaussiana, Media, Dev St., Max, Min, Cp, Cpk)
• Produce customized reports
The software allows you to prepare customized test procedures that include all the calculations required by the standards and product specifications. The dedicated page describes all the available calculations.
Optional configuration of the MooneyCheck-Drive instrument for managing the rotor speed during the test.
• The configuration allows to define the Rotation Speed as a configurable parameter of the Test Procedure.
• The speed can be set between 0.01 and 20 RPM.
• The execution of tests at different speeds allow to evaluate the behavior of your product according to the shear rate and to simulate the behavior of the product in the conditions of use.
The instrument is equipped with a large touch-screen display with dimensions 10.2“.
The buttons on the display permit to start and stop the tests.
The display provides complete information about the status of the instrument: connection to the software, temperature of the dies, diagnostic of the sensors installed.
All Mooney Viscometers produced by Gibitre have a pneumatic ejection device for the rotor which simplifies the cleaning and replacement of the specimen between subsequent tests.
A light panel, installed in the front part of the instrument, changes the color and permits to check the status of the instrument from a distance.
The indicator light identifies the following statuses: Instrument ready, instrument under test, instrument setting test temperature.
The Calibration weight integrated with the instrument permits the automatic Calibration of the torque sensor.
The Calibration is easily performed by pressing the Calibration button on the Control Display, which activates the pneumatic lifting of the weight.
The calibration is performed with reference to the requirements of ISO 289-1 standard.
The service includes:
• Ordinary maintenance of the instrument
• Replacement of the sealing of the lower die.
• Calibration of the temperature of upper and lower dies of instrument (at 100°C and 125°C).
• Calibration of the time for temperature recovery at test start
• Calibration of the torque reading (at 100 Mooney points)
• Calibration of the rotation speed of the rotor
• Final check with Standard Gibitre Compound
• Issue and e-mail shipment of the Calibration Certificate with traceability to primary standards.
Pair of certified butyl rubber specimens (Isobutylene - Isoprene) for the verification of Mooney Viscosity.
The specimens are obtained, without rework, from a bale coded as IRM (Industry Reference Material) prepared by the working group ASTM D11.20 (task Group subcommittee on Compounding Materials and Procedures) in accordance with ASTM D 4678.
The Datagest program is the Database Management Tool always installed in combination with all Gibitre instrument-control programs.
The program permits to:
• Select, filter, print, export and analyse the test results stored with all the instruments connected.
• Prepare test procedures by defining the test conditions and the results to be produced
• Set tolerance limits for each product by manual insertion or using the statistical analysis (mean and standard deviation) of saved results
• Prepare multi-instrument test reports
All the Gibitre programs use a database with SQL structure for saving the results.
The database can be installed inside an SQL instance present on the company server or it can be installed on a PC connected to a measuring instrument. The installation of the Microsoft SQL service (Express version) is included in the delivery.
The instrument and the software have been specifically developed to optimize integration with other environments.
The database in SQL format and the Gibitre_Company_Connect program allows you synchronize your company management software with Gibitre database and to speed up the identification of the tests and to use bar-code readers or similar devices.
Version 10 programs make the following options available for preparing test reports:
• Selection of printing language
• Company logo insertion
• Print a single test / a Group of tests
• Print of Test Curves
• Print Numerical Results
• Print the Limits of Tolerance
• Print Statistical Results
• Print Legend with explanation of results
• Print the Operator Signature
• Print Customized Notes
• Preparation of PDF file
The program integrates a REPORT EDITOR that allows you to completely edit the report and prepare fully customized report formats.
The temperature can be set between room temperature and 250°C.
The regulation of the temperature is performed using thermo-regulators with PID micro-processor and with 0.1°C resolution.
Independent temperature control units ensure sophisticate temperature control and easy replacement in case of failure.
Electrical heating resistances have been specifically designed for this instrument to ensure quick and efficient heating.
The instrument is equipped with:
• Class 1 Safety switch, which prevents the closure of the dies if the safety panel is not closed.
• Safety Push-button
• Safety lock of the maintenance access door, which ensures safe usage even in non-standard operation conditions.
• CE Labelling
The instrument has been specifically developed for easy cleaning of the test chamber. Technical improvements are:
• Seal design to prevent the flowing of rubber below the rotor
• Easy rotor removing by pneumatic ejection
• The shaft housing hole is open from top to bottom to permit easy cleaning.
• The cleaning activity does not require regulation of rotor height
The instrument is totally developed and produced in the plant of Gibitre Instruments in Italy.
All the mechanical parts are produced in the company workshop using modern CNC machines.
Components and sensors from well-known brands are selected in order to ensure the maximum reliability in the measures
Internal trained personnel takes care of all the production stages: assembly, start-up, calibration, packing, shipment and installation.
Polyamide or Polyester Film for the protection of the dies during the test.
Volumetric cutter for the preparation of test Samples with Constant Volume
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ARTSANA S.P.A. - ITALY
BHARAT PETROLEUM CORPORATION LTD. - INDIA
DOW CORNING S.R.L. - ITALY
ELKEM SILICONES GERMANY GMBH - GERMANY
EURO TYRES MANUFACTURING S.R.L. - ROMANIA
FENNER DUNLOP (BRACEBRIDGE) INC. - CANADA
HUTCHINSON S.N.C. - FRANCE
IFOCA - FRANCE
MANULI HYDRAULICS MANUFACTURING SP. Z.O.O. - POLAND
METZELER AUTOMOTIVE PROFILE SYSTEMS VLM - FRANCE
MOMENTIVE PERFORMANCE MATERIALS GMBH - GERMANY
PT PERKEBUNAN AGRINTARA - INDIA
SAINT GOBAIN PERFORMANCE PLASTICS - FRANCE
TM TYRES LIMITED - INDIA
TYRE RECYCLING SOLUTIONS S.A. - SWITZERLAND
VALEO NORTH AMERICA, INC. - U.S.A
VALEO SYSTEMES D'ESSUYAGE FRANCE SAS - FRANCE
VERSALIS S.P.A. - ITALY
