BS 5421-2:1978
Current
The latest, up-to-date edition.
Methods of test for elastomeric threads Polyurethane thread (elastane yarn)
Hardcopy , PDF
English
31-08-1978
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Foreword
Cooperating organizations
Methods
1 Scope
2 References
3 Method 1: preparation of test specimens
4 Method 2: determination of mass per unit length
4.1 Introduction
4.2 Definition
4.3 Sampling
4.4 Apparatus
4.5 Procedure
4.6 Weighing of test specimens
4.7 Calculation
4.8 Test report
5 Method 3: determination of breaking load, tenacity
and elongation at break
5.1 Principle
5.2 Definitions
5.3 Apparatus
5.4 Sampling
5.5 Procedure
5.6 Calculation
5.7 Test report
6 Method 4: determination of load at predetermined
elongation
6.1 Principle
6.2 Definition
6.3 Apparatus
6.4 Sampling
6.5 Procedure
6.6 Calculation
6.7 Test report
7 Method 5: determination of stress decay
7.1 Principle
7.2 Definition
7.3 Apparatus
7.4 Sampling
7.5 Procedure
7.6 Calculation
7.7 Test report
8 Method 6: determination of set
8.1 Definition
8.2 Apparatus
8.3 Sampling
8.4 Procedure
8.5 Calculation
8.6 Test report
9 Method 7: resistance to copper staining during
laundering
9.1 Introduction
9.2 Principle
9.3 Reagents
9.4 Apparatus and materials
9.5 Test pieces
9.6 Preparation of test specimens
9.7 Procedure
9.8 Test report
10 Method 8: resistance to atmospheric fume staining
10.1 Introduction
10.2 Principle
10.3 Reagents
10.4 Apparatus and materials
10.5 Test specimens
10.6 Procedure
10.7 Test report
Figures
1 Method 2: apparatus for cutting test pieces
2 Method 3: recommended method of positioning,
tensioning, and clamping a polyurethane thread in
the tensile testing machine
3 Method 8: suitable apparatus for determining
resistance to atmospheric fume staining
Preparation of test specimens; mass per unit length; breaking load, tenacity and elongation at break; load at predetermined elongation; stress decay; set; resistance to copper staining; resistance to fume staining.
| Committee |
TCI/100
|
| DevelopmentNote |
Supersedes 76/50177 DC. (08/2005) Reviewed and confirmed by BSI, October 2012. (09/2012)
|
| DocumentType |
Standard
|
| Pages |
18
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
This Part of BS 5421 describes eight methods of test for polyurethane thread (elastane yarn):
| method 1 | Preparation of test specimens; |
| method 2 | Determination of mass per unit length; |
| method 3 | Determination of breaking load, tenacity and elongation at break; |
| method 4 | Determination of load at predetermined elongation; |
| method 5 | Determination of stress decay; |
| method 6 | Determination of set; |
| method 7 | Resistance to copper staining during laundering; |
| method 8 | Resistance to atmospheric fume staining. |
| BS 7141-4:1990 | Narrow fabrics Specification for woven elastic webbings containing natural rubber |
| BS 7141-5:1990 | Narrow fabrics Specification for elastic flat braids containing natural rubber |
| BS 903-1:1995 | Physical testing of rubber Guide to the selection and use of methods of test for rubber |
| BS 3763:1976 | The International System of units (SI) |
| BS 5421-1:1976 | Methods of test for elastomeric threads Rubber threads |
| BS 5214-1:1975 | Specification for testing machines for rubbers and plastics Tensile, flexural and compression machines |
| PD 5686:1978 | The use of SI units |
| BS 5663:1979 | Methods of testing iron ores - determination of moisture content |
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