determined by taking a sample of known size, preheating it to a predefined test
temperature for a precise time, and then subjecting it to a compressive force of 5,000g.
The resultant thickness is the plasticity.
The Model P-4 is used to determine the plasticity and recovery of uncompounded,
compounded, and reclaimed stocks of unvulcanized rubber and rubber-like materials. It
conforms with the
requirements of ASTM-D-926.
An Auxiliary dial indicator can be supplied with a micrometer gauge having a presser
foot actuated by a dead weight force required for recovery measurements. Also available
for use with this tester is a die to cut a uniform test sample to ASTM procedures.
A digital indicator with hookup to a PC with
BENZWIN2000 software for automated data collection is also available. This allows the user
the ability to collect and compare data, and make test reports with histograms