DIN 54811:1984-05
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
TESTING OF PLASTICS; DETERMINING THE FLUIDITY OF PLASTICS MELTS BY THE CAPILLARY RHEOMETER
Hardcopy , PDF
12-01-2013
English
01-12-2013
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1 Scope and field of application
2 Principles of the method
3 Designation
4 Number of determinations
5 Apparatus
5.1 Test device
5.2 Temperature control
5.3 Measurement of temperature and calibration
5.4 Measurement of pressure
5.5 Measurement of volumetric throughput of the
sample
6 Sampling
7 Procedure
7.1 Cleaning the test device
7.2 Preparation of samples
7.3 Determining the maximum test duration
7.4 Measuring the volumetric throughput
8 Evaluation
8.1 Volumetric throughput
8.2 Apparent shear rate
8.3 Apparent shear stress
8.4 Flow curves and correction method
8.4.1 Flow curves
8.4.2 Plotting the flow curve
8.4.3 Correction method accordinley for
determining the true shear stress
and flow curve
8.4.3.1 Correction method according
to Bagley
8.4.3.2 Plotting the flow curve
8.4.3.3 Plotting the pressure
correction
8.4.4 Correction method according to
Rabinowitsch for determining the true
shear rate and flow curve
8.4.4.1 Correction method according
to Rabinowitsch
8.4.4.2 Plotting the flow curve
8.5 Viscosity and viscosity curve
8.5.1 Viscosity
8.5.2 Viscosity curve
9 Test report
The test method describes is used for determining the fluidity of wall-adhering plastics melts subject to shear rates, shear stresses and temperatures approximating to those arising in plastic processing. Testing plastics melts in accordance with this method is necessary, since the fluidity of plastics melts is generally not dependent solely on temperature, but also on other parameters, in particular on the shear rate and shear stress.
| DocumentType |
Standard
|
| Pages |
6
|
| PublisherName |
German Institute for Standardisation (Deutsches Institut für Normung)
|
| Status |
Withdrawn
|
| Standards | Relationship |
| ISO 11443:2014 | Corresponds |
| DIN 7748-2:1989-03 | PLASTIC MOULDING MATERIALS; UNPLASTICIZED POLYVINYL CHLORIDE (PVC-U) MOULDING MATERIALS; PREPARATION OF SPECIMENS AND DETERMINATION OF THEIR PROPERTIES |
| DIN 16772-2:1988-12 | PLASTIC MOULDING MATERIALS - ACRYLONITRILE BUTADIENE STYRENE (ABS) MOULDING MATERIALS - PREPARATION OF SPECIMENS AND DETERMINATION OF THEIR PROPERTIES |
| DIN 7741-2:1988-12 | PLASTIC MOULDING MATERIALS; POLYSTYRENE (PS) MOULDING MATERIALS; PREPARATION OF SPECIMENS AND DETERMINATION OF THEIR PROPERTIES |
| DIN 16771-2:1988-12 | PLASTIC MOULDING MATERIALS; STYRENE/BUTADIENE (SB) MOULDING MATERIALS; PREPARATION OF SPECIMENS AND DETERMINATION OF THEIR PROPERTIES |
| DIN 7708-8:1992-02 | PLASTICS - POURABLE THERMOSETTING MOULDING MATERIALS - PREPARATION OF TEST SPECIMENS AND DETERMINATION OF PROPERTIES |
| DIN 7744-2:1989-01 | PLASTIC MOULDING MATERIALS; POLYCARBONATE (PC) MOULDING MATERIALS, PREPARATION OF SPECIMENS AND DETERMINATION OF THEIR PROPERTIES |
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