The MonTech Rapid Plastimeter measures the plasticity, flow and viscosity of polymers and unvulcanized rubbers. The instrument is typically used in conjunction with the MonTech Ageing oven AO 3000 for plasticity testing to determine the Plasticity Retention Index (PRI) of raw natural rubbers.
The MonTech Rapid Plastimeter measures the plasticity or viscosity of polymers and unvulcanised rubbers. The test is simple, clean and quick. The instrument is typically used in conjunction with the MonTech ageing oven for plasticity testing to determine the Plasticity Retention Index (PRI) of raw natural rubbers.
The variable temperature range from 25°C to 200°C for easier to read with freely programmable conditioning and load times allow a convenient characterisation of the flow behavior of natural and synthetic rubbers at variable test conditions. For some applications this method offers a quick, low cost alternative to a Mooney Viscosity test.
The instrument is supplied in a complete set along with a table-top, mechanical volumetric specimen cutter for a reliable preparation of test specimens with a volume of 0.40 cm³ according to international standards. The instrument is supplied with 10 mm diameter top platen installed period. Alternative top platens of 7.3 and 14 mm diameter are supplied as accessories. The platens are easily interchangeable.
Plasticity Retention Index (PRI)
PRI is a measure of the resistance of raw natural rubber to oxidation. The oxidation effect is assessed by measuring the plasticity before ageing (P0) and after ageing for 30 mins in the MonTech ageing oven for Plasticity testing at 140°C (P30)
(PRI = (P30/P0)x100)