1、BRITISH STANDARD BS ISO 6916-1:1995 Incorporating amendment no. 1 Implementation of ISO 6916-1:1995 Flexible cellular polymeric materials Sponge and expanded cellular rubber products Specification Part 1: Sheeting ICS 83.100 BS ISO 6916-1:1995 This British Standard, having been prepared under the di
2、rection of the Sector Board for Materials and Chemicals, was published under the authority of the Standards Board and comes into effect on 15 July 1996 BSI 2007The following BSI references relate to the work on this standard: Committee reference PRI/71 Draft for comment 88/41625 DC ISBN 978 0 580 59
3、160 0 National foreword This British Standard is the UK implementation of ISO 6916-1:1995, incorporating amendment A1:2007. The start and finish of text introduced or altered by amendment is indicated in the text by tags !“. Tags indicating changes to ISO text carry the number of the amendment. For
4、example, text altered by ISO amendment 1 is indicated in the text by !“. The UK participation in its preparation was entrusted to Technical Committee PRI/71, Flexible cellular materials. A list of organizations represented on this committee can be obtained on request to its secretary. This publicati
5、on does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments issued since publication Amd. No. Date Comments 17213 31 July 2007 See national f
6、orewordBS ISO 6916-1:1995BS ISO 6916-1:1995 ii BSI 2007 Contents Page 1S c o p e 1 2 Normative references 1 3 Classification (types, classes grades and suffixes 1 4 Material and workmanship 2 5 Physical properties 2 6 Methods of test 2 7 Dimensional tolerances 2 8 Inspection and rejection 7 9 Packag
7、ing and marking 7 10 Sampling 7 11 Test pieces and sheets 7 12 Measurement of test-piece dimensions 8 Annex A (normative) 10 Annex B (normative) 10 Annex C (normative) 11 Annex D (normative) 11 Annex E (normative) 11 Annex F (normative) 12 Annex G (normative) 12 Figure 1 Locations from which standar
8、d test pieces are to be cut when testing standard test slabs or commercial flat sheets 9 Figure 2 Four-cavity frame for standard test slabs of cellular rubbers 9 Table 1 Physical requirements for cellular rubbers, type 1, open-cell (sponge) rubber 3 Table 2 Physical requirements for cellular rubbers
9、, type 2, closed-cell (expanded) rubber 4 Table 3 Physical requirements for cellular rubbers, with added suffix letter 5 Table 4 Test methods 6 Table 5 Tolerances on dimensions of cellular-rubber sheet for general applications 7BS ISO 6916-1:1995 BSI 2007 iii Foreword ISO (the International Organiza
10、tion for 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
11、has the 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. Dr
12、aft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 6916-1 was prepared by Technical committee ISO/T
13、C 45, Rubber and rubber products. ISO 6916 consists of the following parts, under the general title Flexible cellular polymeric materials Sponge and expanded cellular rubber products specification: Part 1: Sheeting; Part 2: Mouldings and extrusions. Annexes A to G form an integral part of this part
14、of ISO 6916.blankBS ISO 6916-1:1995 BSI 12007 1 1 Scope 1.1 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 or synthetic rubber, either alone or in combination.
15、 The only products included in this part of ISO 6916 are in the form of sheeting. 1.2 This part of ISO 6916 does not apply to latex foam rubbers, shoe soling or other similar micro-cellular products, ebonite cellular rubbers, virgin or reconstituted flexible, semi-rigid urethane foams, virgin or rec
16、onstituted poly(vinyl chloride), or poly(vinyl chloride) blended with other polymers. 1.3 Two types are specified, as follows: Type 1: open-cell rubber (normally known as sponge rubber). Type 2: closed-cell rubber (normally known as expanded rubber). These types are further classified by division in
17、to classes, based on their relative resistance to the action of petroleum-based oils and/or temperature resistance, and grades, based on a specific range of compression-deflection requirements. The product can be further classified by the addition of a suffix letter to the type, class and grade desi
18、gnation to indicate additional requirements. This letter is then defined by a suffix number denoting a test method. 1.4 Attention is drawn to the fact that most extruded or moulded shapes are of sizes too small for cutting standard test pieces. These are difficult to classify and test by the methods
19、 given in this part of ISO 6916 and cannot, therefore, be tested using these procedures. In the case of conflict between the provisions of this part of ISO 6916 and those of the detailed specification or test method for a particular product, the latter shall take precedence. Reference to the methods
20、 shall specifically state the desired test or tests. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this part of ISO 6916. At the time of publication, the editions indicated were valid. All standards are subject to re
21、vision, and parties to agreements based on this part of ISO 6916 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. !ISO 188:1998, Rubber, vulcanize
22、d or thermoplastic Accelerated ageing and heat-resistance tests. Text deleted “ ISO 815:1991, Rubber, vulcanized or thermoplastic Determination of compression set at ambient, elevated or low temperatures. !ISO 1431-1:2004, Rubber, vulcanized or thermoplastic Resistance to ozone cracking Part 1: Stat
23、ic and dynamic strain testing. ISO 1817:2005, Rubber, vulcanized Determination of the effect of liquids. “ ISO 1923:1981, Cellular plastics and rubbers Determination of linear dimensions. !ISO 3865:2005, Rubber, vulcanized or thermoplastic Methods of test for staining in contact with organic materia
24、l. ISO 5893:2002, Rubber and plastics test equipment Tensile, flexural and compression types (constant rate of traverse) Specification. ISO 7500-1:2004, Metallic materials Verification of static uniaxial testing machines Part 1: Tension/compression testing machines Verification and calibration of th
25、e force-measuring system. ISO 23529:2004, Rubber General procedures for preparing and conditioning test pieces for physical test methods. “ NOTE 1 In some of the test methods referenced above, the apparatus, but not procedure, is used. 3 Classification (types, classes, grades and suffixes) 3.1 Types
26、 This part of ISO 6916 covers two types of cellular rubber, as follows: Type 1: open-cell rubber. Type 2: closed-cell rubber. 3.2 Classes Each type is divided into four classes designated by the letters A, B, C and D (for example type 1B). Class A: Cellular rubbers made from natural rubber, reclaime
27、d rubber or synthetic rubber alone or in combination, where specific resistance to the action of petroleum-based oils is not required. Class B: Cellular rubbers made from synthetic rubber having specific requirements for oil resistance with low swell. Class C: Cellular rubbers made from synthetic ru
28、bber having specific requirements for oil resistance with medium swell. Class D: Cellular rubbers made from synthetic rubber 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.
29、BS ISO 6916-1:1995 2 BSI 2007 3.3 Grades Each class is divided into six different grades based on a specific range of firmness as expressed by compression deflection. Grades are designated by a digit (0 to 6), with the softer grades being identified with the lower numbers and the harder grades with
30、the higher numbers. Grade 0: for type 1 cellular rubbers only, a compression-deflection range of 2,5 kPa to 15 kPa. Grade 1: for type 1 and 2 cellular rubbers, a compression-deflection range of 15,1 kPa to 35 kPa. Grade 2: for type 1 and 2 cellular rubbers, a compression-deflection range of 35,1 kPa
31、 to 65 kPa. Grade 3: for type 1 and 2 cellular rubbers, a compression-deflection range of 65,1 kpa to 95 kpa. Grade 4: for type 1 and 2 cellular rubbers, a compression-deflection range of 95,1 kPa to 125 kPa. Grade 5: for type 1 and 2 cellular rubbers, a compression-deflection range of 125,1 kPa to
32、200 kpa. Grade 6: for type 1 and 2 cellular rubbers, a compression-deflection range of 200,1 kPa to 300 kpa. 3.4 Suffix letters Suffix letters may be added singly or in combination after any grade number to indicate additional requirements beyond those specified in Table 1 and Table 2 as basic requi
33、rements. The significance of the approved suffix letters is shown in Table 3. 3.5 Suffix numbers Each suffix letter should preferably be followed by one suffix number. The suffix number always indicates the test method. The time of test is part of the method and is taken from the listing in Table 4.
34、 NOTE 2 Examples of codings: a) 1A2C1F1: This is an open-cell, non-oil-resistant material, firmness 35,1 kPa to 65 kPa, compression set at basic level, ozone-resistant to 25 pphm, and low-temperature-resistant to 40 C. b) 1C3B1C1F2: This is an open-cell material, oil-resistant at the medium swell le
35、vel, firmness 65,1 kPa to 95 kpa, compression set 25 % max., ozone-resistant to 25 pphm, and low-temperature-resistant to 55 C 4 Material and workmanship 4.1 Cellular rubbers produced to this part of ISO 6916 shall be manufactured from natural rubber, synthetic rubber or reclaimed rubber, together w
36、ith added compounding ingredients of such nature and quality that the product complies with the specification requirements. 4.2 In permitting choice in the use of materials, it is not intended to imply that the resulting different rubber materials are equivalent in respect of all physical properties
37、. Any special characteristics other than those specified in this part of ISO 6916 which may be desired for a specific application shall be detailed in the particular product specification. All materials and workmanship shall be in accordance with good commercial practice, and the resulting cellular
38、rubbers shall be free from defects affecting serviceability. These products shall also conform with national and supranational health and safety regulations. 5 Physical properties The various types, classes and grades of cellular rubber shall conform to the physical property requirements given in Ta
39、ble 1 and Table 2, together with any additional requirements indicated by any suffix letter as described in Table 3 and any number given in the designation as described in clause 3. 6 Methods of test 6.1 Unless specifically stated otherwise, all tests shall be carried out in accordance with the meth
40、ods specified in the annexes to this part of ISO 6916. 6.2 Test pieces shall not be tested for at least 72 h after manufacture. Prior to test, the test pieces shall be stored for at least 16 h at either 23 C 2 C and (50 5) % relative humidity or 27 C 2 C and (65 5) % relative humidity. This period m
41、ay form the latter part of the time following manufacture. 6.3 When 23 C 2 C or the phrase “standard temperature” is stated in this document, it shall be taken to mean that the standard temperatures of 23 C 2 C or 27 C 2 C may be used when appropriate !(see ISO 23529). “ 7 Dimensional tolerances The
42、 tolerances allowable on the dimensions of cellular rubber sheet shall be as specified in Table 5.BS ISO 6916-1:1995 BSI 12007 3 Table 1 Physical requirements for cellular rubbers, type 1, open-cell (sponge) rubber Basic requirements Grade No. Compression deflection at 25 % Compression deflection af
43、ter conditioning Change from original value Compression set under constant deflection of 50 % Oil resistance 22 h at 70 C 1 C Deflection at 23 C 2 C Change in volume is ISO 1817 petroleum- based oil No.3 168 h at 70 C 1 C 22 h at 150 C 2 C 5 h at 55 C 2 C 22 h at 70 C 1 C 22 h at 100 C 1 C kpa (Limi
44、ts) % (Limits) % (Limits) % (Max.) % (Max.) % (Max.) % (Limits) Class A, non-oil-resistant 1A0 2,5 to 15 20 a 25 1A1 15,1 to 35 20 25 1A2 35,1 to 65 20 25 1A3 65,1 to 95 20 25 1A4 95,1 to 125 20 25 1A5 125,1 to 200 20 25 1A6 200,1 to 300 20 25 Class B, oil-resistant, low-swell 1B0 2,5 to 15 20 a 40
45、25 to + 10 1B1 15,1 to 35 20 40 25 to + 10 1B2 35,1 to 65 20 40 25 to + 10 1B3 65,1 to 95 20 40 25 to + 10 1B4 95,1 to 125 20 40 25 to + 10 1B5 125,1 to 200 20 40 25 to + 10 1B6 200,1 to 300 20 40 25 to + 10 Class C, oil-resistant, medium-swell 1C0 2,5 to 15 20 a 50 + 10 to + 60 1C1 15,1 to 35 20 50
46、 + 10 to + 60 1C2 35,1 to 65 20 50 + 10 to + 60 1C3 65,1 to 95 20 50 + 10 to + 60 1C4 95,1 to 125 20 50 + 10 to + 60 1C5 125,1 to 200 20 50 + 10 to + 60 1C6 200,1 to 300 20 50 + 10 to + 60 Class D, high-temperature-resistant 1D0 2,5 to 15 10 5 50 1D1 15,1 to 35 10 5 30 1D2 35,1 to 65 10 5 30 1D3 65,
47、1 to 95 10 5 30 1D4 95,1 to 125 10 5 30 1D5 125,1 to 200 10 5 30 a If, after ageing, this grade still falls within the compression-deflection requirement of 2,5 kPa to 15 kPa, it shall be considered acceptable even though the change from the original value is greater that 20 %.BS ISO 6916-1:1995 4 B
48、SI 2007 Table 2 Physical requirements for cellular rubbers, type 2, closed-cell (expanded) rubber Basic requirements Grade No. Compression deflection at 25 % Compression deflection after conditioning Change from original value Compression set under constant deflection of 50 % Water absorption 3 min at 23 C 2 C Fluid resistance 168 h at 23 C 2 C Deflection at 23 C 2 C 22 h at 70 C 1 C 22 h at 150 C 2 C 5
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