Gammadot Rheology Testing & Consultancy Services
Unit 5C, Leaton Industrial Estate, Bomere Heath. Shrewsbury. Shropshire. SY4 3AP. UK
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  Gammadot Rheology Newsletter - 26 September 2011

Gammadot Rheology becomes UK demonstration facility for Molecular Control Systems Ltd with the relaunch of the Porpoise brand name.

Gammadot Rheology has taken delivery of a technologically advanced twin-bore capillary rheometer from Molecular Control Systems Ltd as part of a new joint venture which sees Gammadot become the UK demonstration site for the quality range of rheometers produced by MCS.

The collaboration coincides with the launch of new PRIMES technology by MCS. PRIMES - Porpoise - Rheometers - Melt - Index - Expert – System allows users of rheology, whether it be On-line, At-line or in the Laboratory, to produce measurements of Shear viscosity, Extensional viscosity and Melt Index on the same platform. Direct access to Shear Viscosity and Melt Flow information enables the checking of product conformance to the recognized international quality standards for polymers.

Gammadot’s Principal, Mark Edwards said “The delivery of the flagship P9 twin bore capillary rheometer completes our already extensive rheometry suite, enabling us to provide a complete spectrum of rheological measurements – from simple Brookfield & MFI tests through to oscillatory, shear & extensional viscosity measurements, Gammadot has a rheometer capable of providing accurate data to support our clients needs”.

Alan George, Managing Director of Molecular Control Systems Ltd will be joining Mark Edwards on the Gammadot Rheology stand at this year’s Interplas exhibition at the NEC, Birmingham (Hall 4, L14), where both company heads will be on hand to discuss with visitors the new test services & equipment available through this recently formed alliance.

For more information on The relaunched brand of Porpoise rheometers, contact Molecular Control Systems Ltd through their website HERE.

Molecular Control Systems Ltd Porpoise P9 Twin Bore Capillary Rheometer

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Come Visit Us in Hall 4, Stand L14 This Week!
Tomorrow sees the doors open on this year's Interplas exhibition at the NEC, birmingham and we'd love to see you there! As mentioned above, Mark Edwards Principal of Gammadot Rheology will be joined by Alan George, Managing Director of MCS Ltd, who'll be on hand for the duration of the show to discuss the exciting new collaboration between the two companies.

As is traditional, Gammadot will giving a 10% discount on all testing orders taken during the exhibition, so come drop by the stand and discuss your testing needs, find out more information about the quality range of rheometers available from MCS Ltd, or simply pick up a free, soon to be a collectors item Gammadot enameled pin!

Gammadot's previous stand

Interplas Visitors  
Gammadot Rheology - Stand L14 - Interplas 2011
Gammadot's stand is the opposite side of the hall to 2008 - see you there!
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Melt Flow Indexer
Gammadot's Rayran Melt Flow Rate instrument is now online and performing contract work. Measurements are made to ASTM standard D1238 method A (ISO 1133) and a full range of load weights are available for use in measurements.
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Thermal Diffusivity Apparatus to be Revamped

Thermal Diffusivity Apparatus

The next few months will see the recently acquired Thermal Diffusivity apparatus completely stripped, refurbished & calibrated prior to becoming an intrinsic part of Gammadot's flow simulation support suite. The apparatus provides thermal diffusivity data across a wide temperature range (23°C to 350°C) enabling the characterisation of polymer heat transfer dynamics in both the solid & melt phase. The data will also be used in conjunction with measured PvT data & specific heat capacity to calculate Thermal Conductivity for applications such Autodesk Moldflow, Sigmasoft 3D & Moldex 3D.

The instrument was originally developed by Rapra Technology Ltd and consists of a sample holder containing two disc shaped samples, 48mm in diameter and 4mm thick. The samples are placed together with a thermocouple sandwiched between them for monitoring the centre temperature. The samples are then located within the holder which is composed of a central ring, two 'O' ring seals and two end plates, each one of which contains a heater element. The sample is spring loaded to allow for thermal expansion of the samples.Two other thermocouples are sealed into grooves in the end plates: the beads are flush with the surfaces and thus in direct contact with the surfaces of the sample sandwich. The thermocouples are arranged so that the three junctions lie as closely as possible to the axis of symmetry.

During the course of a measurement the samples are allowed to expand against springs. The increase in thickness is measured using LVDT transducers and included in the calculations. In use the sample holder is supported within a cylindrical stainless steel radiation shield. Power is supplied to the heaters and the temperature rises smoothly to a pre-selected maximum value. The outputs from the three thermocouples & the two LVDTs are datalogged during the test run, and once the test terminates diffusivity is automatically calculated by the software as a function of temperature.

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Gammadot Rheology is a preferred supplier of materials characterisation data to Moldex3D. Taiwan
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For further information about Gammadot Rheology's testing & consultancy services, or if you have a specific problem / testing requirement which you would like Gammadot to provide a solution to, please contact us using the details at the top of the page or via the enquiry form HERE.

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