DIN EN ISO 26082-2-2012 Leather - Physical and mechanical test methods for the determination of soiling - Part 2 Tumbling method (ISO 26082-2 2012) German version EN ISO 26082-2 20.pdf

1、October 2012 Translation by DIN-Sprachendienst.English price group 8No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS

2、 59.140.30!$u“1919882www.din.deDDIN EN ISO 26082-2Leather Physical and mechanical test methods for the determination of soiling Part 2: Tumbling method (ISO 26082-2:2012);English version EN ISO 26082-2:2012,English translation of DIN EN ISO 26082-2:2012-10Leder Physikalische und mechanische Prfungsv

3、erfahren zur Bestimmung des Anschmutzens Teil 2: Trommelverfahren (ISO 26082-2:2012);Englische Fassung EN ISO 26082-2:2012,Englische bersetzung von DIN EN ISO 26082-2:2012-10Cuir Mthodes dessai physique et mcanique de dtermination de la salissure Partie 2: Mthode par culbutage (ISO 26082-2:2012);Ver

4、sion anglaise EN ISO 26082-2:2012,Traduction anglaise de DIN EN ISO 26082-2:2012-10www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 13 pages10.12 DIN EN ISO 26082-2:2012-10 2 A comma is used as the decimal marker. National foreword This

5、standard has been prepared by Technical Committee CEN/TC 289 “Leather” (Secretariat: UNI, Italy) in collaboration with IULTCS, the International Union of Leather Technologists and Chemists Societies. The responsible German body involved in its preparation was the Normenausschuss Materialprfung (Mate

6、rials Testing Standards Committee), Working Committee NA 062-05-51 AA Physikalische Prfverfahren fr Leder. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 105-A02 DIN EN 20105-A02 ISO 105-A03 DIN EN 20105-A03 ISO 105-A04 DIN EN ISO 105-

7、A04 ISO 2418 DIN EN ISO 2418 ISO 2419 DIN EN ISO 2419 ISO 12947-1 DIN EN ISO 12947-1 National Annex NA(informative) Bibliography DIN EN 20105-A02, Textiles Tests for colour fastness Part A02: Grey scale for assessing change in colour DIN EN 20105-A03, Textiles Tests for colour fastness Part A03: Gre

8、y scale for assessing staining DIN EN ISO 105-A04, Textiles Tests for colour fastness Part A04: Method for the instrumental assess-ment of the degree of staining of adjacent fabrics DIN EN ISO 2418, Leather Chemical, physical and mechanical and fastness tests Sampling location DIN EN ISO 2419, Leath

9、er Physical and mechanical tests Sample preparation and conditioning DIN EN ISO 12947-1, Textiles Determination of the abrasion resistance of fabrics by the Martindale method Part 1: Martindale abrasion testing apparatus EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 26082-2 July 2012 ICS

10、59.140.30 English Version Leather - Physical and mechanical test methods for the determination of soiling - Part 2: Tumbling methodCuir - Mthodes dessai physique et mcanique de dtermination de la salissure - Partie 2: Mthode par culbutage (ISO 26082-2:2012) Leder - Physikalische und mechanische Prfu

11、ngsverfahren zur Bestimmung des Anschmutzens - Teil 2: Trommelverfahren (ISO 26082-2:2012) This European Standard was approved by CEN on 9 June 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status

12、of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, Germa

13、n). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia,

14、 Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and Unite

15、d Kingdom. Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 26082-2:2012: E(ISO 26082-2:2012) EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISC

16、HES KOMITEE FR NORMUNGContents Page Foreword . 3 1 Scope . 4 2 Normative references 4 3 Principle 4 4 Reagents . 5 5 Apparatus 5 6 Sampling and sample preparation . 8 7 Procedure 8 7.1 Preparation of the soiling solution . 8 7.2 Preparation of the soiled cubes 8 7.3 Soiling treatment for test specim

17、ens . 10 7.4 Assessment of the test specimens 10 8 Test report . 10 2DIN EN ISO 26082-2:2012-10 EN ISO 26082-2:2012 (E) Foreword This document (EN ISO 26082-2:2012) has been prepared by Technical Committee CEN/TC 289 “Leather , the secretariat of which is held by UNI, in collaboration with IULTCS “I

18、nternational Union of Leather Technologists and Chemists Societies . 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 January 2013, and conflicting national standards shall be withdrawn at the late

19、st by January 2013. 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/CENELEC Internal Regulations, the national st

20、andards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

21、 Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. ”3DIN EN ISO 26082-2:2012-10 EN ISO 26082-2:2012 (E) 1 Scope This part of ISO 26082 specifies a tumbling method which is intended to determine the resist

22、ance of all forms of leather to visible soiling through repeated contact with soiled objects. It provides a physical pretreatment routine for leathers that may be vulnerable to loss of soiling resistance in service. 2 Normative references The following referenced documents are indispensable for the

23、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 105-A02, Textiles Tests for colour fastness Part A02: Grey scale for assessing change in colour ISO 105-A0

24、3, Textiles Tests for colour fastness Part A03: Grey scale for assessing staining ISO 105-A04, Textiles Tests for colour fastness Part A04: Method for the instrumental assessment of the degree of staining of adjacent fabrics ISO 105-F09, Textiles Tests for colour fastness Part F09: Specification for

25、 cotton rubbing cloth ISO 2418, Leather Chemical, physical and mechanical and fastness tests Sampling location ISO 2419, Leather Physical and mechanical tests Sample preparation and conditioning ISO 12947-1, Textiles Determination of the abrasion resistance of fabrics by the Martindale method Part 1

26、: Martindale abrasion testing apparatus 3 Principle A controlled soiling treatment comprising multiple impacts with soiled felt pads is applied to a specimen. This is achieved by tumbling the felt pads within a rotating container into one end of which the specimen is fixed. The change in colour of a

27、 standard fabric fixed at the other end of the rotating cylinder is used to determine the end-point of the soiling treatment. A pretreatment to simulate wear may be applied to leathers that are vulnerable to a loss of soiling resistance in service. 4DIN EN ISO 26082-2:2012-10 EN ISO 26082-2:2012 (E)

28、 4 Reagents 4.1 Synthetic sebum1), containing (mass fractions): Free fatty acids 18,0 % Beef tallow 32,8 % Fatty acid triglycerides 3,6 % Lanoline 18,3 % Cholesterol 3,7 % Hydrocarbon mixture 12,0 % Stearate mixture (cutina type) 11,6 % 4.2 Acetone (GPR). 4.3 Butanone (GPR). 4.4 White spirit (CAS No

29、. 64742-48-9) (GPR). 4.5 Colloidal graphite2), having (18 r 0,5) % graphite in a water-based dispersion that is miscible with the synthetic sebum solution. 5 Apparatus Use usual laboratory apparatus and, in particular, the following. 5.1 Suitable tumbling soiling machine3)(see Figure 1), capable of

30、rotating at (24 r 2) r/min with the facility to change the direction of rotation at 10 min operating intervals, incorporating the following: at least four cylinders each of which is of internal length (300 r 10) mm, and of internal diameter (100 r 5) mm; equipped at each end with a removable lid whi

31、ch maintains the required internal cylinder length and an annular test specimen retaining collar of internal diameter of not less than 75 mm; located lengthways in the plane of rotation; 1) A suitable product is: Synthetic Sebum 09 D, available from WFK Testgewebe GmbH, Christenfeld 10, D-41379 Brug

32、gen-Bracht, Germany. This information is given for the convenience of users of this part of ISO 26082 and does not constitute an endorsement by ISO of this product. 2) A suitable product is: Aquadag 18 %, available from Acheson Industries (Europe) Ltd., c/o Postbox 1, 9679 ZG Scheemda, The Netherlan

33、ds. This information is given for the convenience of users of this part of ISO 26082 and does not constitute an endorsement by ISO of this product. 3) Suitable equipment can be obtained from SATRA Technology Centre, Kettering, UK, NN16 8SD. This information is given for the convenience of users of t

34、his International Standard and does not constitute an endorsement by ISO of these products. 5DIN EN ISO 26082-2:2012-10 EN ISO 26082-2:2012 (E) mounted with the centre point of its longitudinal axis at a distance of (240 r 25) mm from the axis of rotation and its longitudinal axis tangential to this

35、 radial line; of such dimensions that no point within the cylinders is further than 350 mm from the axis of rotation. Dimension in millimetres Key 1 bleached cotton cloth or leather test specimen, as required Figure 1 Schematic (not to scale) diagram of a suitable tumbling soiling machine 5.2 White

36、felt cubes4), containing a minimum 90 % wool and of density 0,30 g/cm3to 0,40 g/cm3, with sides measuring (12,5 r 0,5) mm. 160 felt cubes are required. 5.3 Oven capable of maintaining a temperature of (60 r 2) C with local exhaust ventilation and in an ignition risk-free environment. 5.4 Undyed, des

37、ized, cotton rubbing cloth, as specified in ISO 105-F09, cut into circles of diameter (96 r 1) mm. A minimum of six is required. 5.5 Colorimeter, complying with ISO 105-A04 and using CIE 10 observer and illuminant D65. For a sphere-type colorimeter, “spectrally included” shall be used. 5.6 Grey scal

38、e, with half step ratings for assessing the degree of staining as described in ISO 105-A03 for white leathers or ISO 105-A02 for other colours. 4) A suitable product can be obtained from Naish Felts Ltd, Wilton, Salisbury SP2 0HD, UK. This information is given for the convenience of users of this pa

39、rt of ISO 26082 and does not constitute an endorsement by ISO of this product. 6DIN EN ISO 26082-2:2012-10 EN ISO 26082-2:2012 (E) 5.7 Suitable Maeser-type machine, incorporating the following: 5.7.1 Pair or pairs of V-shaped clamps, which are (63 r 3) mm apart and in the same horizontal plane, into

40、 which the test specimen can be clamped. Each clamp shall have a ”V” form with an internal angle of (31 r 1) and an internal tip radius of (7,5 r 0,5) mm. Dimension in millimetres Key X pivot point 1 stationary clamp (5.7.2) 2 moveable clamp (5.7.3) 3 test specimen Figure 2 Side view of test specime

41、n in “V” shaped clamps 5.7.2 One stationary clamp. 5.7.3 One moveable clamp, which shall pivot about a point X which is midway (31,5 r 1,5) mm between the clamps such that the lower end of the clamps move together (see Figure 2). 5.7.4 A pivot point X (see Figure 2), which shall be (54,0 r 0,5) mm a

42、bove the internal face of the clamp at the tip of the “V” and the flexing angle through which the clamp moves shall be (32 r 2). 5.7.5 A method of applying a simple harmonic motion to the moveable clamp (5.7.3) so that it pivots toward the stationary clamp (5.7.2) and back to its original position a

43、t a rate of (90 r 5) cycles/min. 5.7.6 A means of counting the number of cycles of the moveable clamp (5.7.3). 5.8 Martindale abrasion testing apparatus, as described in ISO 12947-1, if required (see 6.4). 5.9 Silicon carbide paper, of grit size 180 and possibly higher, if required (see 6.4). 7DIN E

44、N ISO 26082-2:2012-10 EN ISO 26082-2:2012 (E) 6 Sampling and sample preparation 6.1 Cut four circular test specimens of diameter (96 r 1) mm from the leather under test in accordance with ISO 2418 or by ensuring that no specimen is taken from within 50 mm of the edges. If the leather has a grain pat

45、tern, select the specimens to be representative of the overall surface texture/appearance. 6.2 Cut four approximately (50 u 55) mm rectangles of the leather under test following the sampling procedure in 6.1. These are going to be used as reference samples in the assessment (7.4.2). 6.3 Condition th

46、e test specimens (6.1 and 6.2) and cotton discs (5.4) in accordance with ISO 2419 and carry out the test in this environment. 6.4 If required, finished or coated leathers that are vulnerable to loss of soiling resistance in service due to deterioration of the surface may be subjected to a physical p

47、retreatment regime prior to testing. The following regime simulates the natural abrasion and flexing that occurs in upholstery leathers in service: 100 revolutions with silicon carbide paper of grit size 180, using an abrasion machine complying with that described in ISO 12947-1, with the material u

48、nder test mounted on the base plate and the abradent paper in the test specimen carrier while applying a nominal contact pressure of 12 kPa; followed by 100 000 cycles dry flexing using a machine as described in 5.7. The abrasion process is intended to be light and superficial, it should not expose

49、the substrate. If excessive abrasion is produced, a less severe abrasive paper with a higher grit size number or reduced contact pressure than specified above should be used and reported according to 8 f). Unfinished leathers (e.g. aniline, nubuck and suede) are normally only tested in the new condition. If wear simulation is required, a less severe abrasive paper or re