1、BRITISH STANDARDBS EN ISO3386-1:1997+A1:2010Polymeric materials, cellular flexible Determination of stress-strain characteristic in compression Part 1: Low-density materialsICS 83.100Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 02/09/2010 08:18, Uncontrolled Copy, (c) BSINational forewordT
2、his British Standard is the UK implementation of EN ISO 3386-1:1997+A1:2010. It is identical to ISO 3386-1:1986, incorporating amendment 1:2010. It supersedes BS EN ISO 3386-1:1998 which is withdrawn.The start and finish of text introduced or altered by amendment is indicated in the text by tags. Ta
3、gs indicating changes to ISO text carry the number of the ISO amendment. For example, text altered by ISO amendment 1 is indicated by !“.The UK participation in its preparation was entrusted to Technical Committee PRI/24, Testing of rigid and flexible cellular materials.A list of organizations repre
4、sented on this committee can be obtained on request to its secretary.This publication 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.BS EN ISO 3
5、386-1:1997+A1:2010This British Standard, having been prepared under the direction of the Sector Board for Materials and Chemicals, was published under the authority of the Standards Board and comes into effect on15 January 1998 BSI 2010Amendments/corrigenda issued since publicationDate Comments 30 J
6、une 2010 Implementation of ISO amendment 1:2010 with CEN endorsement A1:2010; BSI and CEN publication dates alignedISBN 978 0 580 62669 2Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 02/09/2010 08:18, Uncontrolled Copy, (c) BSIEUROPEAN STANDARD NORME EUROP ENNE EUROPISCHE NORMEN ISO 3386-1:
7、1997+A1April 2010ICS 83.100Descriptors: See ISO documentEnglish versionPolymeric materials, cellular flexible Determination of stress-strain characteristic in compression Part 1: Low-density materials(ISO 3386-1:1986/AMD 1:2010)Matriaux polymres alvolaires souples Dtermination de la caractristique d
8、e contrainte-dformation relative en com-pression Partie 1: Matriaux basse masse volumique (ISO 3386-1:1986/AMD 1:2010)Weichelastische Schaumstoffe Bestimmung der Druckspannungs- Verformungseigenschaften Teil 1: Materialien mit niedriger Dichte (ISO 3386-1:1986/AMD 1:2010)This European Standard was a
9、pproved by CEN on 16 October 1997.CEN members are bound to comply with the CEN/CENELEC InternalRegulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nation
10、al standards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notif
11、ied to the Central Secretariat has the same status as the official versions.CEN members are the national standards bodies of Austria, Belgium, Czech Re-p u b l i c , D e n m a r k , F i n l a n d , F r a n c e , G e r m a n y , G r e e c e , I c e l a n d , I r e l a n d , I t a l y , L u x-e m b o
12、u r g , N e t h e r l a n d s , N o r w a y , P o r t u g a l , S p a i n , S w e d e n , S w i t z e r l a n d a n d U n i t e d Kingdom.CENEuropean Committee for Standardization Comit Europen de Normalisation Europ isches Komitee f r NormungCentral Secretariat: rue de Stassart 36, B-1050 Brussels
13、1997 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 3386-1:1997+A1:2010 ELicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 02/09/2010 08:18, Uncontrolled Copy, (c) BSIiiForewordThe text of the International Standard from
14、Technical Committee ISO/TC 61 Plastics of the International Organization for Standardization (ISO) has been taken over as an European Standard by Technical Committee CEN/TC 249 Plastics , the secretariat of which is held by IBN.This European Standard shall be given the status of a national standard,
15、 either by publication of an identical text or by endorsement, at the latest by May 1998, and conflicting national standards shall be withdrawn at the latest by May 1998.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to im
16、plement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.Endorsement noticeThe text of the International Standard ISO 3386-1:1986
17、has been approved by CEN as a European Standard without any modification.NOTE Normative references to International Standards are listed in Annex ZA (normative).ContentsPage1 Scope and field of application 12 References 13 Definitions 14 Apparatus 15 Test pieces 16 Procedure 27 Expression of results
18、 28 Repeat tests 29 Test report 2Annex ZA (normative) Normative references to international publications with their relevant European publications Inside back coverForeword to amendment A1 This document (EN ISO 3386-1:1997/A1:2010) has been prepared by Technical Committee ISO/TC 45 “Rubber and rubbe
19、r products“ in collaboration with Technical Committee CEN/TC 249 Plastics the secretariat of which is held by NBN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2010, and conflicting nat
20、ional standards shall be withdrawn at the latest by October 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN
21、/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lit
22、huania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and theUnited Kingdom.Endorsement notice The text of ISO 3386-1:1986/Amd 1:2010 has been approved by CEN as a EN ISO 3386-1:1997/A1:2010 without any modification. BSI 2010BS EN I
23、SO 3386-1:1997+A1:2010EN ISO 3386-1:1997+A1:2010 (E)Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 02/09/2010 08:18, Uncontrolled Copy, (c) BSI11 Scope and field of applicationThis part of ISO 3386 specifies a method for the determination of the compression stress/strain characteristic of lo
24、w-density flexible cellular materials up to 250 kg/m3. It also indicates a method for the calculation of the compression stress value of such materials.The compression stress/strain characteristic is a measure of the load-bearing properties of the material, though not necessarily of its capacity to
25、sustain a long-term load.The compression stress/strain characteristic differs from the indentation hardness characteristics (as determined in accordance with ISO 2439), which are known to be influenced by the thickness and the tensile properties of the flexible cellular material under test, by the s
26、hape of the compression plate and by the shape and size of the test piece.ISO 3386/2 specifies a method for high-density materials and differs from part 1 in the following ways:it is mainly concerned with materials of density above 250 kg/m3;compression stress values have been deleted; it does not p
27、ermit the use of a cylindrical test piece.2 ReferencesISO 1923, Cellular materials Determination of linear dimensions. ISO 2439, Polymeric materials, cellular flexible Determination of hardness (indentation technique). 3 DefinitionsFor the purposes of this International Standard the following defini
28、tions apply.3.1 compression stress/strain characteristic (CC)the stress, expressed in kilopascals1), required to produce a compression, at a constant rate of deformation during the fourth loading cycle of the test specified below, expressed as a function of the compression3.2 compression stress valu
29、e (CV40)the compression stress/strain characteristic for a compression of 40 %4 Apparatus4.1 Test machineThe test machine shall be capable of compressing the test piece between a support surface (see 4.2) and a compression plate (see 4.3), which shall have a uniform relative rate of motion in the ve
30、rtical direction of 100 20 mm/min.4.2 Supporting surfaceUnless otherwise specified, the test piece shall be supported on a smooth, flat, horizontal and rigid surface, larger than the test piece, which may be vented with holes about 6 mm in diameter, and approximately 20 mm pitch, to allow the escape
31、 of air from below the test piece.4.3 Compression plateThe compression plate shall be of any convenient size and shape, provided that it overlaps the test piece in all directions. The lower surface shall be plane and smooth, but not polished, and it shall be maintained parallel to the supporting sur
32、face.5 Test pieces5.1 Form and dimensionsThe test piece shall be a right parallelepiped or a right cylinder with a minimum width or diameter/thickness ratio of 2 : 1. The preferred thickness of a test piece is 50 1 mm and in any case the thickness shall be not less than 10 mm. Sheets less than 10 mm
33、 thick shall be plied together to reach the preferred thickness range, provided that a minimum of ten cell diameters are included in the thickness of each ply.The area of the test piece shall be not less than 2 500 mm2and shall be such that at no point does the test piece overlap the compression pla
34、te.NOTE For specimens with an area close to the lower limit, the compression forces may be very low, and specialized testing equipment may therefore be required to meet the precision specified in 4.1.5.2 Samples showing orientationIf the products show an orientation of the cellular structure, the di
35、rection in which the indentation is to be carried out shall be agreed upon between the interested parties. Normally, testing is carried out in that direction in which the finished product will be stressed under service conditions.1) 1 kPa = 103N/m2ISO 7500-1, Metallic materials Veri c a t i o n o f
36、static uniaxial testing machines Part 1: Tension/compression testing machines Veri c a t i o n a n d c a l i b r a t i o n o f t h e f o r c e -measuring systemThe test machine shall be capable of measuring the force with an accuracy corresponding to class 1 of ISO 7500-1 or with an accuracy of 1 N,
37、 and also of measuring the test piece thickness under load with an accuracy of 0,25 mm.!“!“ BSI 2010BS EN ISO 3386-1:1997+A1:2010EN ISO 3386-1:1997+A1:2010 (E)Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 02/09/2010 08:18, Uncontrolled Copy, (c) BSI25.3 Number of test piecesThree test piece
38、s shall be tested.5.4 Conditioning6 ProcedureMeasure the dimensions of the test piece using the appropriate procedure specified in ISO 1923 and calculate the area of the load-bearing face.Insert the test piece in such a way that the force acts along the centre line of the test machine (4.1) and comp
39、ress it at 100 20 mm/min by means of the compression plate (4.3) until a compression of % of the initial test piece thickness is attained or until the compression strain applied equals that specified in the material specification. Then decompress the test piece at the same rate until the separation
40、between the compression plate and the base plate is equal to the initial test piece thickness.Immediately repeat this procedure three times and on the fourth compression cycle read the force, in newtons, at the specified strain.NOTE If measurements are required at multiple compression strains on a t
41、est piece, it is unnecessary to allow recovery time or to repeat the pre-loading procedure between the readings at each strain provided that measurements are taken in order of increasing magnitude of strain.7 Expression of results7.1 Compression stress/strain characteristicThe compression stress/str
42、ain characteristic at any required percentage compression, expressed in kilopascals, is given by the equationwhereCCxxis the compression stress/strain characteristic at a compression of xx %;70+50CCxx1 000FxxA- - - - - - - - - -=Fxxis the force, in newtons, recorded in the fourth loading cycle for a
43、 compression of xx %;A is the surface area, in square millimetres, of the test piece.7.2 Compression stress valueThe compression stress value, expressed in kilopascals, is given by the equationwhereCV40is the compression stress value at a compression of 40 %;F40is the force, in newtons, recorded in
44、the fourth loading cycle for 40 % compression;A is the surface area, in square millimetres, of the test piece.8 Repeat testsFor repeat tests on the same test piece, a minimum recovery period of 16 h shall be observed.9 Test reportThe test peport shall include the following information:a) reference t
45、o this International Standard, i.e. ISO 3386/1;b) a description of the material;c) the temperature and humidity at which the test pieces were conditioned;d) the dimensions of the test piece used and, if applicable, the number of plies;e) the compression stress/strain characteristics for individual t
46、est pieces, and their median, and/or the compression stress values for individual test pieces, and their median;f) other relevant information.NOTE An example of how to express compression stress/strain characteristics briefly is as follows:ISO 3386/1 CC2523 C, 50 % relative humidityIndividual result
47、sMedian kPaCV401 000F40A- - - - - - - - -=Materials shall not be tested less than 72 h after manufacture unless it can be demonstrated that the mean results obtained at either 16 h or 48 h after manufacture do not differ by more than 10% from those obtained after 72 h, in which case testing is permi
48、tted at 16 h or 48 h, respectively.Prior to the test, the test pieces shall be conditioned, undeflected and undistorted, for at least 16 h in one of the following atmospheres:23 C 2 C, (50 5) % relative humidity;27 C 2 C, (65 5) % relative humidity.This conditioning period can form the final part of
49、 or, in the case of testing 16 h after manufacture, the whole of the period following manufacture. In the case of quality-control tests, test pieces can be taken a shorter time (down to a minimum of 12 h) after manufacture and testing carried out after conditioning for a shorter period (down to a minimum of 6 h) in one of the atmospheres specified above.Testing shall be carried out at the same temperature and relative humidity as those used for conditioning.!“ BSI 2010BS EN ISO 3386-1:1997+A1:2010EN ISO 3386-1:1997+A1:2010 (E)License
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