BS 2782-1.135(1993) : 1993 AMD 10349
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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 TEST PLASTICS - THERMAL PROPERTIES - DETERMINATION OF THE TIME-TEMPERATURE LIMITS AFTER PROLONGED EXPOSURE TO HEAT
15-05-1999
23-11-2012
National foreword
Committees responsible
Introduction
Method
1 Scope
2 Normative references
3 Definitions
4 Principle
5 Choice of test
6 Choice of end-point
7 Test specimens
8 Exposure temperature
9 Ageing ovens
10 Procedure
11 Evaluation of results
12 Determination of the relative temperature index
13 Test report
Annexes
A (normative) Calculation of the regression line
B (normative) Correlation coefficient
C (informative) Recommended test schedule for primary
properties
Tables
A.1 Commonly used test temperatures, in degrees
Celsius, corresponding values in kelvins with their
reciprocal and reciprocal squared values
A.2 Sample calculation
Figures
1 Determination of the time to reach the end-point at
each temperature - property variation
2 Thermal endurance graph - temperature index -
halving interval
3 Thermal endurance graph - relative temperature
index - halving interval
A.1 Plot of regression line based on sample calculation
Specifies the principles and procedures for evaluating the thermal endurance properties of plastics exposed to elevated temperature for long periods. Coverage includes definitions, exposure temperature, ageing ovens, choice of end-point, and determination of the relative temperature index. Also gives detailed tables, annexes and diagrams. BS AMD 10349 RENUMBERS THIS STD
| Committee |
PRM/21
|
| DevelopmentNote |
Renumbered and superseded by BS EN ISO 2578. Supersedes 90/38737 DC. (10/2005)
|
| DocumentType |
Standard
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy |
| Standards | Relationship |
| ISO 2578:1993 | Identical |
| BS 7825-3.8:1998 | Calibration of rubber and plastics test equipment. Calibration schedules Degradation and environmental properties |
| IEC 60216-4-1:2006 | Electrical insulating materials - Thermal endurance properties - Part 4-1: Ageing ovens - Single-chamber ovens |
| IEC 60216-2:2005 | Electrical insulating materials - Thermal endurance properties - Part 2: Determination of thermal endurance properties of electrical insulating materials - Choice of test criteria |
| ISO 291:2008 | Plastics Standard atmospheres for conditioning and testing |
| IEC 60216-5:2008 | Electrical insulating materials - Thermal endurance properties - Part 5: Determination of relative thermal endurance index (RTE) of an insulating material |
| IEC 60216-3-1:1990 | Guide for the determination of thermal endurance properties of electrical insulating materials. Part 3: Instructions for calculating thermal endurance characteristics - Section 1: Calculations using mean values of normally distributed complete data |
| IEC 60216-1:2013 | Electrical insulating materials - Thermal endurance properties - Part 1: Ageing procedures and evaluation of test results |
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