BS 2782-1.130B(1991) : 1991 AMD 10685
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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METHODS OF TESTING PLASTICS - THERMAL PROPERTIES - DETERMINATION OF THE THERMAL STABILITY OF POLYVINYL CHLORIDE BY THE pH METHOD
15-04-2000
23-11-2012
National foreword
Committees responsible
Method
1 Scope
2 Normative references
3 Definition
4 Principle
5 Reagents and materials
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
Annex
A Cleaning the apparatus
Tables
1 Repeated determinations of stability time
2 Repeated determinations of stability time for a
single product over a 2 year period
3 Repeated determinations of stability time in several
laboratories using a single product
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 dehydrochlorination cell to
measurement cell
5 Expansion joint for connection on each side of cell
B
6 Example of suitable measurement cell
Describes a method for determining thermal stability at raised temperatures of compounds and products based on vinyl chloride homopolymers and copolymers which undergo dehydrochlorination. Used as a quality-control test during manufacture and conversion of PVC compounds. Suitable for coloured compounds and products where a discolouration test under the action of heat may be unsatisfactory. Recommended for compounded materials and products only. Not recommended for compounds in the form of dry blends. BS AMD 10685 RENUMBERS STANDARD
| Committee |
PRM/21
|
| DevelopmentNote |
Renumbered and superseded by BS EN ISO 182-2. Supersedes 89/41650 DC and BS 2782-1.130B(1976). (09/2005)
|
| DocumentType |
Standard
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy |
| Standards | Relationship |
| ISO 182-2:1990 | Identical |
| ISO 4793:1980 | Laboratory sintered (fritted) filters — Porosity grading, classification and designation |
| ISO 565:1990 | Test sieves — Metal wire cloth, perforated metal plate and electroformed sheet — Nominal sizes of openings |
| ISO 3696:1987 | Water for analytical laboratory use — Specification and test methods |
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