Page 4 - Hydrocarbon Evaluation Rubber and Plastic

Evaluation of
Dynamic viscoelasticity, viscosity properties, viscosity curves
Rheology
Properties

Rheology evaluation instruments provide essential information for research, development, and
quality control, including information on the various properties that determine processability,
such as viscoelasticity, a property peculiar to polymers, as well as viscosity, fluidity, and rate
of volume change.

Sample: High-density polyethylene (HDPE)
200mm

15.0

Stroke 10.0

5.0

0.00mm
100.0ˆ 150.0ˆ 200.0ˆ
Temperature
CFT-500D/100D
Applicable JIS standards: Constant-rate temperature-rise
K7210: Plastics -- Determination of the melt mass-flow rate (MFR)
and the melt volume-flow rate (MVR) of thermoplastics measurement test result
K7311: Testing methods for thermoplastic polyurethane elastomers

•Capillary Rheometer Flow Tester CFT-500D
A device for evaluating the viscosity properties of fluid materials, such as resin, from the relationship between the temperature, pressure, and
flowrate. This device is available as a stand-alone type, which offers very high operability and cost-effectiveness, and a PC type, which enables
high-level data processing.

Applicable standards:
JIS K6300-1: Rubber, unvulcanized -- Physical property -- Part 1: Determination of
Mooney viscosity and pre-vulcanization characteristics with Mooney viscometer ■Mooney viscosity curve
ISO 289 Test: After an 8-minute Mooney test
ASTM D1646
Stress relaxation test:
2 minutes (SMV-300RT)
Sample: Butyl rubber
Stress relaxation measurement makes it
possible to obtain differences in
processability that could not be expressed
with only Mooney viscosity. By combining the
usual Mooney viscosity with the stress
relaxation result, the viscous behavior of raw
rubber and compounded rubber can be
grasped with greater accuracy.
˙Stress relaxation graph

•Automatic Mooney Viscometer SMV-300/300RT
A cutting-edge instrument consisting of a microcomputer built into a measurement control device. It incorporates a thermal printer/plotter and
can record viscosity curves and print numerical data. It can also perform the evaluation of stress relaxation (RT only).

4 Evaluation of Rheology Properties