1、 Reference number ISO 6916-2:2001(E) ISO 2001INTERNATIONAL STANDARD ISO 6916-2 First edition 2001-12-15 Flexible cellular polymeric materials Sponge and expanded cellular rubber products Specification Part 2: Mouldings and extrusions Polymres alvolaires souples Caoutchoucs alvolaires mousses et soup
2、les Spcification Partie 2: Moulage et extrusion ISO 6916-2:2001(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed
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5、e inform the Central Secretariat at the address given below. ISO 2001 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing
6、from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.ch Web www.iso.ch Printed in Switzerland ii ISO 2001 All rights reserved ISO 6916-2:2001(E
7、) ISO 2001 All rights reserved iiiContents Page Foreword.iv 1 Scope 1 2 Normative references1 3 Classification (types, classes, grades and suffixes) .2 4 Material and workmanship .3 5 Physical properties3 6 Methods of test 3 7 Dimensional tolerances 3 8 Inspection and rejection .3 9 Packaging and ma
8、rking 4 10 Sampling.4 11 Standard test pieces, standard test sheets and specially prepared extruded shapes 4 12 Measurement of test piece dimensions 5 Annex A (normative) Heat-resistance test13 Annex B (normative) Compression deflection tests .14 Annex C (normative) Oil resistance test.15 Annex D (n
9、ormative) Compression set under constant deflection .16 Annex E (normative) Water absorption test.17 Annex F (normative) Fluid resistance test .18 Annex G (normative) Low-temperature resistance test 19 ISO 6916-2:2001(E) iv ISO 2001 All rights reserved Foreword ISO (the International Organization fo
10、r Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the
11、 right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Internati
12、onal Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication
13、as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this part of ISO 6916 may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent
14、rights. ISO 6916-2 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee SC 4, Products (other than hoses). ISO 6916 consists of the following parts, under the general title Flexible cellular polymeric materials Sponge and expanded cellular rubber products Specifica
15、tion: Part 1: Sheeting Part 2: Mouldings and extrusions Annexes A to G form a normative part of this part of ISO 6916. INTERNATIONAL STANDARD ISO 6916-2:2001(E) ISO 2001 All rights reserved 1Flexible cellular polymeric materials Sponge and expanded cellular rubber products Specification Part 2: Moul
16、dings and extrusions WARNING Persons using this part of ISO 6916 should be familiar with normal laboratory practice. This part of ISO 6916 does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and
17、 health practices and to ensure compliance with any national regulatory conditions. 1 Scope This part of ISO 6916 classifies flexible cellular rubber products known as sponge and expanded rubber. The base material used in their manufacture may be natural rubber, reclaimed rubber, synthetic rubber or
18、 rubber-like material, either alone or in combination. Thermoplastic rubbers are not included. This part of ISO 6916 does not apply to latex foam rubbers or shoe soling. Sheeting materials are covered by ISO 6916-1. This part (part 2) covers vulcanized cellular rubber products that are manufactured
19、by a moulding or continuous vulcanization process, i.e. hot air, microwave, infra-red, liquid curing medium (LCM), shearing-head vulcanization or a combination of two or more of these methods. In the case of conflict between the provisions of this part of ISO 6916 and those of the detailed specifica
20、tion or test method for a particular product, the latter shall take precedence. Reference to the methods shall specifically state the desired test or tests. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of thi
21、s part of ISO 6916. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of ISO 6916 are encouraged to investigate the possibility of applying the most recent editions of the normative documents ind
22、icated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. ISO 188:1998, Rubber, vulcanized and thermoplastic Accelerated ageing and heat resistance tests ISO 815:1991,
23、Rubber, vulcanized or thermoplastic Determination of compression set at ambient, elevated or low temperatures ISO 1431-1:1989, Rubber, vulcanized or thermoplastic Resistance to ozone cracking Part 1: Static strain test ISO 1817:1999, Rubber, vulcanized Determination of the effect of liquids ISO 1923
24、:1981, Cellular plastics and rubbers Determination of linear dimensions ISO 3865:1997, Rubber, vulcanized or thermoplastic Methods of test for staining in contact with organic material ISO 6916-2:2001(E) 2 ISO 2001 All rights reservedISO 5893: 1) , Rubber and plastics test equipment Tensile, flexura
25、l and compression types (constant rate of traverse) Specification NOTE In some of the test methods referenced in this clause, the apparatus but not the procedure is used. 3 Classification (types, classes, grades and suffixes) 3.1 Types Three types are specified, as follows: Type 1: open-cell rubber
26、Type 2: closed-cell rubber Type 3: self-skinned cellular rubber 3.2 Classes Each type is divided into four classes designated by the letters A, B, C and D (for example type 1B), as follows: Class A: Cellular rubbers made from natural rubber, where specific resistance to the action of petroleum- base
27、d oils is not required Class B: Cellular rubbers having specific requirements for oil resistance with low swell Class C: Cellular rubbers having specific requirements for oil resistance with medium swell Class D: Cellular rubbers made from synthetic rubber or rubber-like materials, either alone or i
28、n combination, having specific requirements for both low- and high-temperature resistance ( 75 C to + 250 C), but where specific resistance to the action of petroleum-based oils is not required 3.3 Grades Each class is divided into six different grades based on a specific range of firmness as expres
29、sed by compression deflection determined as described in annex B. Grades are designated by a digit (0 to 6), with the softer grades being identified with the lower numbers and the harder grades with the higher numbers: Grade 0: For type 1 cellular rubbers only, a compression deflection range of 2,5
30、kPa to 15,0 kPa Grade 1: For type 1 and 2 cellular rubbers, a compression deflection range of 15,1 kPa to 35,0 kPa Grade 2: For type 1 and 2 cellular rubbers, a compression deflection range of 35,1 kPa to 65,0 kPa Grade 3: For type 1 and 2 cellular rubbers, a compression deflection range of 65,1 kPa
31、 to 95,0 kPa Grade 4: For type 1 and 2 cellular rubbers, a compression deflection range of 95,1 kPa to 125,0 kPa Grade 5: For type 1 and 2 cellular rubbers, a compression deflection range of 125,1 kPa to 200,0 kPa Grade 6: For type 1 and 2 cellular rubbers, a compression deflection range of 200,1 kP
32、a to 300,0 kPa 1) To be published. (Revision of ISO 5893:1993) ISO 6916-2:2001(E) ISO 2001 All rights reserved 33.4 Suffixes 3.4.1 Suffix letters Suffix letters may be added singly or in combination after any grade number to indicate additional requirements beyond those specified in Tables 1 to 3 as
33、 basic requirements. The significance of the approved suffix letters is shown in Table 4. 3.4.2 Suffix numbers Each suffix letter should preferably be followed by a suffix number. The suffix number indicates the particular test conditions. The test duration is part of the method and is taken from th
34、e listing in Table 5. NOTE Products meeting requirements defined to the suffix number level should conform with national and supra-national health and safety regulations. 4 Material and workmanship 4.1 Cellular rubbers produced to this part of ISO 6916 shall be manufactured from natural rubber, synt
35、hetic rubber, reclaimed rubber or rubber-like material, together with added compounding ingredients of such nature and quality that the product complies with the requirements of this part of ISO 6916. 4.2 In permitting choice in the use of materials, it is not intended to imply that the resulting di
36、fferent rubber materials are equivalent in respect of all physical properties. Any special characteristics other than those specified in this part of ISO 6916 that may be desired for a specific application shall be detailed in the particular product specification. All materials and workmanship shall
37、 be in accordance with good commercial practice, and the resulting cellular rubbers shall be free from defects affecting serviceability. 5 Physical properties The various types, classes and grades of cellular rubber shall conform to the physical-property requirements given in Tables 1 to 3, together
38、 with any additional requirements indicated by any suffix letter as described in Table 4 and any suffix number given in the designation as described in 3.4. 6 Methods of test 6.1 Unless specifically stated otherwise, all tests shall be carried out in accordance with the methods specified in the anne
39、xes to this part of ISO 6916. 6.2 Test pieces shall not be tested for at least 72 h after manufacture. Prior to testing, the test pieces shall be stored for at least 16 h at either (23 2) C and (50 5) % relative humidity or (27 2) C and (65 5) % relative humidity. This period may form the latter par
40、t of the period following manufacture. 7 Dimensional tolerances The tolerances allowable on the dimensions of cellular rubber in moulded and extruded form shall be as specified in Table 6. 8 Inspection and rejection 8.1 All tests and inspections shall be made at the place of manufacture prior to shi
41、pment, unless otherwise specified. The manufacturer shall afford the inspector all reasonable facilities for tests and inspections. ISO 6916-2:2001(E) 4 ISO 2001 All rights reserved8.2 The purchaser may carry out the tests and inspections governing acceptance or rejection of the material at his own
42、laboratory or elsewhere. Such tests and inspections shall be made not later than 15 days after receipt of the material. 8.3 All test pieces prepared as specified in clause 11 shall be visually inspected to determine compliance with the material, workmanship and colour requirements. 8.4 Any material
43、that fails one or more of the test requirements may be re-tested. For this purpose, two additional tests shall be made for the requirement for which failure occurred. Failure of either of the re-tests shall be cause for final rejection. 8.5 Rejected material shall be disposed of as directed by the m
44、anufacturer. 9 Packaging and marking The material shall be properly and adequately packaged. Each package or container shall be legibly marked with the name of the material, the name or trademark of the manufacturer, and any required purchasers designations. 10 Sampling 10.1 When possible, the compl
45、ete finished product shall be used for the tests specified. Representative samples of the lot being examined shall be selected at random as required. 10.2 When it is necessary or advisable to obtain test pieces from the article, as in those cases where the finished product is not required or suitabl
46、e for testing, the method of cutting and the exact position from which test pieces are to be taken shall be specified. The apparent density and the state of cure may vary in different parts of the finished product, especially if the article is of complicated shape or of varying thickness, and these
47、factors will affect the physical properties of the test pieces. Also, the apparent density is affected by the number of cut surfaces as opposed to the number of skin-covered surfaces on the test piece. 10.3 When the finished product does not lend itself to testing or to the preparation of test piece
48、s because of its complicated shape, its small size, the presence of metal or fabric inserts, the presence of surface skins, a tendency to adhere to metal, or for other reasons, standard test sheets shall be prepared. When differences in test values arise due to the difficulty in obtaining suitable t
49、est pieces from the finished product, manufacturer and purchaser may agree on acceptable deviations. This can be done by comparing results obtained with standard test pieces and those obtained on actual products. 11 Standard test pieces, standard test sheets and specially prepared extruded shapes 11.1 Standard test pieces Standard test pieces shall be discs, cut out with a die, either 0,04 0 (30 ) + mm or 0,04 0 (19 ) + mm in diameter and at least 0,5 0 (6 ) + mm thick. The test pieces may be
