BS 2782-1.130C(1993) : 1993 AMD 13566
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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 - THERMAL PROPERTIES - DETERMINATION OF THE THERMAL STABILITY OF POLYVINYL CHLORIDE BY THE CONDUCTOMETRIC METHOD
07-03-2002
23-11-2012
National foreword
Committees responsible
Method
1. Scope
2. Normative references
3. Definition
4. Principle
5. Reagents
6. Apparatus
7. Preparation of test samples
8. Number of tests
9. Temperatures for dehydrochlorination
10. Test procedure
11. Expression of results
12. Precision
13. Test report
Annexes
A. (informative) Cleaning of the apparatus
B. (informative) Calculation of repeatability and
reproducibility - Conductometric and pH-meter
methods
C. (informative) Bibliography
Tables
1. Repeat determinations of stability time for three
PVC products over a two year period
2. Unplasticized PVC, theta=200 deg C
3. Unplasticized PVC
B.1 Precision of the conductometric method for
implasticized PVC
B.2 Precision of the pH-meter method for unplasticized
PVC
Figures
1. General arrangement of apparatus
2. Cell A (re-usable) for dehydrochlorination of PVC
samples
3. Cell B (disposable) for dehydrochlorination of PVC
samples
4. Tubes for connecting the dehydrochlorination cell
to the measurement cell
5. Expansion joint for connection on each side of
cell B
6. Example of a suitable measurement cell
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