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BS 2782-7:Method 722B:1996

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Methods of testing plastics. Rheological properties Determination of the fluidity of plastics using capillary and slit-die rheometers
Available format(s)

Hardcopy , PDF

Superseded date

23-03-2005

Language(s)

English

Published date

15-07-1996

Committees responsible
National foreword
Method
1 Scope
2 Normative references
3 Definitions
4 General principles
5 Apparatus
6 Sampling
7 Procedure
8 Expression of results
9 Precision
10 Test report
Tables
1 Designation of test methods
2 Maximum allowable temperature differences as a function of
     distance and as a function of time
3 Typical test temperatures
Figures
1 Typical example of an extrusion rheometer used with
     capillary die
2 Typical example of an extrusion rheometer used with a slit
     die
3 Application of the Bagley correction method
4 Schematic Bagley plot for capillary dies
5 Schematic Bagley plot for slit dies
A.1 Shear-rate ratio versus thickness-to-width ratio H/B
Annexes
A (informative) Method of correcting for the influence of H/B
     on the apparent shear rate
B (informative) Measurement errors
C (informative) Effect of flow conditions on measurement
     accuracy
D (informative) Bibliography

Gives methods to determine fluidity of plastic melts subjected to shear stresses at rates and temperatures approximating to those arising in plastic processing.

Committee
PRI/21
DevelopmentNote
DRAFT FOR COMMENT 92/45392 DC
DocumentType
Standard
Pages
26
PublisherName
British Standards Institution
Status
Superseded
SupersededBy
Supersedes

Standards Relationship
ISO 11443:2014 Identical

ISO 6507-1:2005 Metallic materials Vickers hardness test Part 1: Test method
ISO 468:1982 Surface roughness — Parameters, their values and general rules for specifying requirements

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