Rubber Testing Solutions INNOVATIONS IN RUBBER TESTING

MonTech Werkstoffprüfmaschinen GmbH Carl - Benz - Straße 11 D - 74722 Buchen / Germany I n n o vat i v e t evat s t iinvg Inno e s o lu ng s t et s itoi n m atdi o e ni n s o lu s G emra mdaeniyn! Germany! MonTech Werkstoffprüfmaschinen GmbH is the world‘s leading premium manufacturer of rubber testing instruments. Since 1998, we have been developing, producing, distributing and servicing high quality testing machines and their components as well as related software solutions for materials and component testing. Trust in MonTech’s products and services are reflected in their long-term customer...

MonTech Technology: Moving Die Rheometer (MDR and RPA) Series Moving Die Rheometers are the standard testing method for characterisation of rubber curing in quality control as well as research and development. Therefore these rotorless curemeters are equipped with a closed, sealed, biconical die system according to all relevant ISO, ASTM and DIN standards. During the test the lower die performs a sinusoidal oscillation with a fixed oscillation amplitude and frequency, at either a fixed (isothermal) or variable temperature (non-isothermal). MonTech Moving Die Rheometer systems are the backbone...

Test dies and die closing system MonTech Moving Die Rheometers are equipped with a biconical die assembly with integrated direct heating, accurate sample temperature measurement, superior temperature control with unbeaten accuracy, highest heating and cooling rates, and minimized response times. The specific die and crosshead design ensures a perfect alignment and uniform closing as well as parallelism of both test dies, significantly reducing result variations. MonTech Rheometer test dies are entirely made from superior, lottraceable stainless steel, hardened, precision ground and polished,...

MonTech Technology: Moving Die Rheometer (MDR and RPA) Series Precision torque measurements and transducer systems Torque / force transducers and loadcells are the most critical part when it comes to precision of the instrument because raw torque and force signals, as well as derived modulus and viscosity signals are directly used for test result calculation. This is exactly the reason why MonTech designs and manufactures all transducers in-house. This guarantees the widest measurement ranges along with clean-room applied strain gauge technology paired together in ultra-rugged and stiff assemblies....

Powerful drive technology MonTech Rheometer systems are equipped with the latest, closed-loop digital drive technology. The quality and performance of the instruments‘ rheological measurements are highly influenced by the precision of the applied deformation and thus the motor positioning. Therefore all MonTech Rheometer testing systems are equipped with the latest high-precision drive systems: The MDR 3000 Basic instrument features a geared, brushless DC motor with integrated drive control systems, digitally connected to the instrument PLC unit, making this drive the ideal system for static...

Moving Die Rheometer Application Examples 14 Isothermal Cure Isothermal cure experiments are the most common type of test for quality control in rubber and elastomer processing. MonTech Moving Die Rheometers provide high precision data as well as a simple operation of the instruments. All the important characteristics, such as minimum / maximum elastic torque, scorch times, cure times and reaction rates are precisely calculated, with over 3500 different datapoints. All data is available in numerical as well as graphical form; limits, control gates and tolerance graphs can easily be set, and Pass...

Rubber Process Analyzer Raw Material Applications Frequency sweep material analysis In general, the mechanical properties of materials depend on frequency. A good understanding of the influence of frequency on a material is therefore very important for its practical use. For example, a material appears stiff under the action of a force at high frequency, but soft when the force is applied slowly. Isothermal frequency sweeps provide information about the weight distribution MWD (crossover modulus) as well as average molecular weight AWM (crossover frequency). But the behavior of viscoelastic materials...

Rubber Process Analyzer Advanced Cure and Processability Applications 20.0 Isothermal Curing at Variable Strain Typically, cure experiments on rubber compounds - especially for quality control purposes - are performed with a fixed oscillation angle of +/- 0.5° and a frequency of 1.67 Hz. However, for specific rubber compounds or challenging materials such as silicones or epoxy resins, this might not be ideal as either reaction torque readings are too low, providing only a limited ability to distinguish between different batches, or might be too high causing high result variability as the material...

Rubber Process Analyzer Processability and post-cure Applications Prediction of processability: Extrusion Good processing performance is influenced by three main criteria: throughput flow, die swell and surface finish. The rubber is required to flow through the extruder. The flow will be controlled by the viscosity of the rubber. The shear rate from an extruder and extrusion die can easily be calculated and used as the specific test parameters in a Rubber Process Analyzer test setup. The shear rate in MonTech Rubber Process Analyzer is proportional to the frequency multiplied by the oscillation...

RHEOMETER PERFORMANCE STATIC TESTING Instrument description Oscillation frequency MonTech Moving Die Rheometers and Rubber Process AnalyzersStatic Curemeters are designed to test mixed rubber compounds under isothermal test conditions with fixed strain and frequency.Dynamic Curemeters are Dynamic Mechanical Rheological Testers (DMRT) designed to measure material properties of raw elastomers or mixed rubber -before, during and after cure in a single test. International Drive system Oscillation strain Temperature range Measured Data Calculated Data