BS EN ISO 75-2:2013
Current
The latest, up-to-date edition.
Plastics. Determination of temperature of deflection under load Plastics and ebonite
Hardcopy , PDF
English
30-04-2013
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Apparatus
6 Test specimens
7 Conditioning
8 Procedure
9 Expression of results
10 Precision
11 Test report
Annex A (informative) - Precision
Bibliography
Describes three methods, using different values of constant flexural stress, that can be used for the determination of the temperature of deflection under load of plastics (including filled plastics and fibre-reinforced plastics in which the fibre length, prior to processing is up to 7,5 mm) and ebonite: - method A, using a flexural stress of 1,80 MPa; - method B, using a flexural stress of 0,45 MPa; - method C, using a flexural stress of 8,00 MPa.
| Committee |
PRI/21
|
| DevelopmentNote |
Renumbers and supersedes BS 2782-1.121A.C(1994) 1996 version incorporates amendment 8646 to BS 2782-1.121A.C(1994) Supersedes BS 2782-1.121A&B(1991) (09/1996) Supersedes 01/121039 DC. (06/2004) Supersedes 12/30237823 DC. (05/2013)
|
| DocumentType |
Standard
|
| Pages |
20
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This part of ISO75 specifies three methods, using different values of constant flexural stress, which can be used for the determination of the temperature of deflection under load of plastics (including filled plastics and fibre-reinforced plastics in which the fibre length, prior to processing, is up to 7,5mm) and ebonite:
methodA, using a flexural stress of 1,80MPa;
methodB, using a flexural stress of 0,45MPa;
methodC, using a flexural stress of 8,00MPa.
The standard deflection, Δs, used to determine the temperature of deflection under load corresponds to a flexural-strain increase, Δεf, defined in this part of ISO75. The initial flexural strain due to the loading of the specimen at room temperature is neither specified nor measured in this part of ISO75. The ratio of this flexural-strain increase to the initial flexural strain depends on the modulus of elasticity, at room temperature, of the material under test. This method is, therefore, only suitable for comparing the temperatures of deflection of materials with similar room-temperature elastic properties.
NOTE1 The methods give better reproducibility with amorphous plastics than with semi-crystalline ones. With some materials, it can be necessary to anneal the test specimens to obtain reliable results. Annealing procedures, if used, generally result in an increase in the temperature of deflection under load (see 6.6).
NOTE2 For additional information, see ISO75-1:2013, Clause1.
| Standards | Relationship |
| NF EN ISO 75-2 : 2013 | Identical |
| EN ISO 75-2:2013 | Identical |
| NS EN ISO 75-2 : 2013 | Identical |
| DIN EN ISO 75-2:2013-08 | Identical |
| NBN EN ISO 75-2 : 2013 | Identical |
| SN EN ISO 75-2 : 2013 | Identical |
| ISO 75-2:2013 | Identical |
| I.S. EN ISO 75-2:2013 | Identical |
| UNI EN ISO 75-2 : 2013 | Identical |
| NEN EN ISO 75-2 : 2013 | Identical |
| UNE-EN ISO 75-2:2013 | Identical |
| 10/30191266 DC : 0 | BS EN ISO 13628-17 - PETROLEUM AND NATURAL GAS INDUSTRIES - DESIGN AND OPERATION OF SUBSEA PRODUCTION SYSTEMS - PART 17: GUIDELINES FOR FLEXIBLE PIPE ANCILLARY EQUIPMENT |
| DEFSTAN 02-701(PT3)/3(2013) : 2013 | GLASS REINFORCED PLASTIC (GRP) MOULDINGS - PART 3: A GUIDE TO THE VARIOUS TESTS AND TESTING METHODS FOR THE EVALUATION OF THE QUALITY OF GRP MOULDINGS |
| DEFSTAN 02-167/4(2011) : 2011 | REQUIREMENT FOR RESIN FOR USE IN SHIPS, BOATS, CRAFT AND CRAFT STRUCTURES |
| DEFSTAN 02-167/3(2007) : 2007 | REQUIREMENTS FOR RESIN FOR USE IN SHIPS, BOATS, CRAFT AND CRAFT STRUCTURES |
| DEFSTAN 02-167/2(2004) : 2004 | REQUIREMENT FOR RESIN FOR USE IN SHIPS, BOATS, CRAFT AND CRAFT STRUCTURES |
| DEFSTAN 02-701(PT3)/2(2004) : 2004 | GLASS REINFORCED PLASTIC (GRP) MOULDINGS - PART 3: A GUIDE TO VARIOUS TESTS AND TESTING METHODS FOR THE EVALUATION OF THE QUALITY OF GRP MOULDINGS |
| BS 7825-3.1:1997 | Calibration of rubber and plastics test equipment. Calibration schedules Thermal properties |
| ISO 75-1:2013 | Plastics Determination of temperature of deflection under load Part 1: General test method |
| ISO 293:2004 | Plastics — Compression moulding of test specimens of thermoplastic materials |
| ISO 10350-1:2017 | Plastics — Acquisition and presentation of comparable single-point data — Part 1: Moulding materials |
| ISO 10724-1:1998 | Plastics — Injection moulding of test specimens of thermosetting powder moulding compounds (PMCs) — Part 1: General principles and moulding of multipurpose test specimens |
| ISO 5725:1986 | Precision of test methods Determination of repeatability and reproducibility for a standard test method by inter-laboratory tests |
| ISO 294-1:2017 | Plastics — Injection moulding of test specimens of thermoplastic materials — Part 1: General principles, and moulding of multipurpose and bar test specimens |
| ISO 2818:1994 | Plastics — Preparation of test specimens by machining |
| ISO 20753:2008 | Plastics Test specimens |
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