ISO-527-2-1993.pdf
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1、INTERNATIONAL STANDARD IS0 527-2 First edition 1993-06-I 5 Plastics - Determination of tensile properties - Part 2: Test conditions for moulding and extrusion plastics P/as tiques - Dbtermination des proprj - rigid and semirigid thermosetting moulding and cast materials, including filled and reinfor
2、ced com- pounds but excluding textile fibres as reinforce ment (see IS0 527-4 and IS0 527-5); - thermotropic liquid crystal polymers. The methods are not suitable for use with materials reinforced by textile fibres (see IS0 527-4 and IS0 527-51, with rigid cellular materials or sandwich structures c
3、ontaining cellular material. 1.3 The methods are applied using specimens which may be either moulded to the chosen dimen- sions or machined, cut or punched from injection- or compression-moulded plates. The multipurpose test specimen is preferred (see IS0 3167:1993, Plastics - Multipurpose test spec
4、imens), 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this part of IS0 527. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on thi
5、s part of IS0 527 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and IS0 maintain registers of currently valid International Standards. IS0 37: 1977, Rubber, vulcanized - Determination of tensile stress-strain prope
6、rties. IS0 293: 1986, Plastics - Compression moulding test specimens of thermoplastic materials. IS0 294:-l), Plastics - Injection moulding of test specimens of thermoplastic materials. IS0 295:1991, Plastics - Compression moulding of test specimens of thermosetting materials. IS0 527-l :1993, Plast
7、ics - Determination of tensile properties - Part 1: General principles. IS0 1926:1979, Cellular plastics - Determination of tensile properties of rigid materials. IS0 2818:-*), Plastics - Preparation of test speci- mens by machining. 1) To be published. (Revision of IS0 294:1975) 2) To be published.
8、 (Revision of IS0 2818:1980) IS0 527-2:1993(E) 3 Principle See IS0 527-l :1993, clause 3. 4 Definitions For the purposes of this part of IS0 527, the defi- nitions given in IS0 527-l apply. 5 Apparatus See IS0 527-l : 1993, clause 5. 6 Test specimens 6.1 Shape and dimensions Wherever possible, the t
9、est specimens shall be dumb-bell-shaped types 1A and 1B as shown in figure 1. Type 1A is preferred for directly-moulded multipurpose test specimens, type 1 B for machined specimens. NOTE 1 Types IA and 1 B test specimens having 4 mm thickness are identical to the multipurpose test specimens accordin
10、g to IS0 3167, types A and B, respectively. For the use of small specimens, see annex A. 6.2 Preparation of test specimens Test specimens shall be prepared in accordance with the relevant material specification. When none exists, or unless otherwise specified, specimens shall be ei- ther directly co
11、mpression- or injection moulded from the material in accordance with IS0 293, IS0 294 or IS0 295, as appropriate, or machined in accordance with IS0 2818 from plates that have been com- pression- or injection-moulded from the compound. All surfaces of the test specimens shall be free from visible fl
12、aws, scratches or other imperfections. From moulded specimens all flash, if present, shall be re- moved, taking care not to damage the moulded sur- face. Test specimens from finished goods shall be taken from flat areas or zones having minimum curvature. For reinforced plastics, test specimens shoul
13、d not be machined to reduce their thickness unless absolutely necessary. Test specimens with machined surfaces will not give results comparable to specimens having non-machined surfaces. 6.3 See 6.4 See Gauge marks IS0 527-l :1993, subclause 6.3. Checking the test specimens IS0 527-l :1993, subclaus
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