EN ISO 17232-2009 459 Leather - Physical and mechanical tests - Determination of heat resistance of patent leather《皮革 物理和机械试验 漆皮耐热性的测定［代替 CEN EN 13540］》.pdf

1、BS EN ISO17232:2009ICS 59.140.30NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDLeather Physicaland mechanical tests Determination ofheat resistance ofpatent leather (ISO17232:2006)Copyright European Committee for Standardization Provided by IHS under license wi

2、th CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-This British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 28 February2009 BSI 2009ISBN 978 0 580 66887 6Amendments/corrigenda issued since publicationDate CommentsBS E

3、N ISO 17232:2009National forewordThis British Standard is the UK implementation of EN ISO 17232:2009.It is identical to ISO 17232:2006. It supersedes BS EN 13540:2002 whichis withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee TCI/69, Footwear, leather and coated fa

4、brics.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfr

5、om legal obligations.Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 17232January 2009ICS 59.140.30 Supersedes EN 13540:2002

6、 English VersionLeather - Physical and mechanical tests - Determination of heatresistance of patent leather (ISO 17232:2006)Cuir - Essais physiques et mcaniques - Dtermination dela rsistance la chaleur des cuirs vernis (ISO17232:2006)Leder - Physikalische und mechanische Prfungen -Bestimmung der Wrm

7、ebestndigkeit von Lackleder (ISO17232:2006)This European Standard was approved by CEN on 1 December 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration.

8、 Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationu

9、nder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece,

10、Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre

11、: rue de Stassart, 36 B-1050 Brussels 2009 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN ISO 17232:2009: ECopyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or netwo

12、rking permitted without license from IHS-,-,-BS EN ISO 17232:2009EN ISO 17232:2009 (E) 3 Foreword The text of ISO 17232:2006 has been prepared by Technical Committee IULTCS International Union of Leather Technologists and Chemists Societies of the International Organization for Standardization (ISO)

13、 and has been taken over as EN ISO 17232:2009 by Technical Committee CEN/TC 289 “Leather” the secretariat of which is held by UNI. 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 July 2009, and co

14、nflicting national standards shall be withdrawn at the latest by July 2009. 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. This docum

15、ent supersedes EN 13540:2002. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hung

16、ary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 17232:2006 has been approved by CEN as a EN ISO 17232:2009 without any modific

17、ation. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 17232:2009ISO 17232:2006(E) IULTCS/IUP 38:2006(E) ISO 2006 All rights reserved iiiForeword ISO (the International

18、 Organization 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 est

19、ablished 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 standardiz

20、ation. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. 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 voti

21、ng. Publication 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 document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such

22、 patent rights. ISO 17232 was prepared by the Physical Test Commission of the International Union of Leather Technologists and Chemists Societies (IUP Commission, IULTCS) in collaboration with the European Committee for Standardization (CEN) Technical Committee CEN/TC 289 Leather, the secretariat of

23、 which is held by UNI. It was published as EN 13540. It is based on IUP 38 published in J. Soc. Leather Tech. Chem., 84 (7), p. 403, 2000, and declared an official method of the IULTCS in March 2001. IULTCS, originally formed in 1897, is a world-wide organization of professional leather societies to

24、 further the advancement of leather science and technology. IULTCS has three Commissions, which are responsible for establishing international methods for the sampling and testing of leather. ISO recognizes IULTCS as an international standardizing body for the preparation of test methods for leather

25、. Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 17232:2009Copyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo repr

26、oduction or networking permitted without license from IHS-,-,-BS EN ISO 17232:2009INTERNATIONAL STANDARD ISO 17232:2006(E)IULTCS/IUP 38:2006(E) ISO 2006 All rights reserved 1Leather Physical and mechanical tests Determination of heat resistance of patent leather 1 Scope This International Standard s

27、pecifies two methods for determining the heat resistance of patent leather. Method A makes use of a modified lastometer while Method B uses the “Zwik” apparatus. Both methods are applicable to patent leathers for all end uses. 2 Normative references The following referenced documents are indispensab

28、le for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 2418, Leather Chemical, physical and mechanical and fastness tests Sampling location ISO 2419,

29、Leather Physical and mechanical tests Sample preparation and conditioning 3 Method A Lastometer method 3.1 Principle A perforated test piece is distended by a specified amount. The surface is heated and any damage to the patent finish is noted. 3.2 Apparatus 3.2.1 Test machine, including the parts d

30、escribed in 3.2.1.1 to 3.2.1.4. 3.2.1.1 Clamp, capable of holding the test piece around its edge leaving free a central circular area of diameter 25,0 mm 0,1 mm. The design of its clamping system shall ensure that the test piece does not slip under the test conditions and neither stretches nor compr

31、esses the central area as it is clamped. The boundary between the free and clamped area shall be sharply defined. 3.2.1.2 Plunger, terminating in a steel ball of diameter 21,0 mm 0,1 mm. 3.2.1.3 Mechanism for thrusting the steel ball, without rotation against the test specimen. 3.2.1.4 Mechanism for

32、 monitoring the distension of the steel ball, (travel from zero) to an accuracy of 0,05 mm. 3.2.2 Press knife, conforming to the requirements of ISO 2419 for cutting test pieces of suitable dimensions for the test machine. Copyright European Committee for Standardization Provided by IHS under licens

33、e with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 17232:2009ISO 17232:2006(E) IULTCS/IUP 38:2006(E) 2 ISO 2006 All rights reserved3.2.3 Sewing machine needle, sharp and undamaged, PCL size 80, either fitted into holder suitable for use by hand or

34、into sewing machine. NOTE Other sized needles may be used if they are more appropriate to the sewing used in the shoe production. 3.2.4 Hot air blower, capable of maintaining a temperature of 100 C 5 C or 125 C 5 C. 3.2.5 Temperature measuring device, reading to 1 C. 3.2.6 Stopwatch, reading to 1 s.

35、 3.2.7 Soft rubber mat, minimum thickness 10 mm. 3.3 Sampling and sample preparation 3.3.1 Sample in accordance with ISO 2418. Cut three test pieces by applying the press knife (3.2.2) to the patent surface. NOTE If there is a requirement for more than two hides or skins to be tested in one batch, t

36、hen only one sample need be taken from each hide or skin, provided that the overall total is not less than three test pieces. 3.3.2 If the test piece is to be perforated by hand, place the test piece on the soft rubber mat (3.2.7) with the patent surface uppermost. Using the sewing machine needle (3

37、.2.3) fitted into a holder, pierce a hole vertically through the centre of the test piece so that the hole is within 1,0 mm of the centre. Pierce four further holes through the test piece with each hole 5,0 mm 0,5 mm from the first hole so that the first holes form a simple (Greek) cross. Ensure tha

38、t the needle penetrates through the leather into the soft rubber mat. 3.3.3 If the test piece is to be perforated by machine, perforate through the centre using the needle fitted into a sewing machine (3.2.3) running at normal speed but without the thread and set at 6 stitches/10 mm. 3.3.4 Condition

39、 the test piece in accordance with ISO 2419. Carry out the test in the standard atmosphere. 3.4 Procedure 3.4.1 Set the instrument so that the plunger is set at zero or minimum distension. 3.4.2 Tightly clamp the test piece into the instrument so that the ball end of the plunger (3.2.1.2) acts on th

40、e reverse side of the test piece. 3.4.3 Force the ball end of the plunger into the test piece until the test piece is distended by 7,5 mm 0,05 mm as shown on the distension scale (3.2.1.4). Examine the test piece and note any damage. 3.4.4 Place the sensor of the temperature measuring device (3.2.5)

41、 a distance of 1,5 mm 0,5 mm above the dome of the distended test piece. Using the hot air blower (3.2.4), raise the temperature of the test piece to 100 C 5 C or 125 C 5 C as indicated on the temperature measuring device (3.2.5) and maintain this temperature for 180 s 5 s or 300 s 5 s respectively.

42、 If the temperature goes out of the limits, reject the test piece and repeat using a fresh test piece. 3.4.5 Maintain the test piece in the distended state and re-examine. Record any damage to the patent finish or the leather grain. 3.4.6 Repeat steps 3.4.1 to 3.4.5 for the remaining test pieces. Co

43、pyright European Committee for Standardization Provided by IHS under license with CENNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-BS EN ISO 17232:2009ISO 17232:2006(E) IULTCS/IUP 38:2006(E) ISO 2006 All rights reserved 33.5 Test report The test report shall incl

44、ude the following: a) a reference to this International Standard; i.e. ISO 17232:2006; b) details of any damage to the patent finish or leather grain when the test piece is first distended; c) details of any damage to the patent finish or leather grain when the test piece is heated; d) the test temp

45、erature and time (i.e. 100 C for 180 s or 125 C for 300 s); e) the standard atmosphere used for conditioning and testing as given in ISO 2419 (i.e. 20 C/65 % RH, or 23 C/50 % RH); f) any deviations from the method specified in this International Standard; g) full details for identification of the sa

46、mple and any deviations from ISO 2418 with respect to sampling. 4 Method B Zwik method 4.1 Principle A perforated test piece is distended by a specified amount. The surface is heated and any damage to the patent finish is noted. 4.2 Apparatus 4.2.1 Test machine, constructed such that the two ends of

47、 the test piece are held in the fixed horizontal clamp B, so that the test piece can be stretched over mandrel D. Mandrel D consists of a horizontal half cylinder of radius 15,0 mm 0,1 mm and length 25,5 mm 0,1 mm with a quarter sphere of radius 15,0 mm 0,1 mm at its end. The lower (fixed) face of c

48、lamp A is in the same plane as the top line of mandrel D and clamp B is 11,0 mm 0,1 mm vertically below the curved tip of the mandrel. The hand-operated lever C to which clamp B is attached moves up and down in a quadrant E. Its maximum downward movement, which determines the maximum stretch of the test piece, is controlled by a pin which passes through two holes in the two sides of the quadrant. There are pairs of holes in the quadrant, and the pin can be inserted through any of these to control the amount of movement of the lever. One setting shall correspond