1、BRITISH STANDARD BS EN 660-2:1999 Incorporating Amendment No. 1 Resilient floor coverings Determination of wear resistance Part 2: Frick-Taber test The European Standard EN 660-2:1999, with the incorporation of amendment A1:2003, has the status of a British-Standard ICS 97.150 BS EN 660-2:1999 This
2、British Standard, having been prepared under the direction of the Sector Committee for Materials and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 July 1999 BSI 28 July 2003 ISBN 0 580 32267 X National foreword This British Standard is the offici
3、al English language version of EN 660-2:1999, including amendment A1:2003. The UK participation in its preparation was entrusted to Technical Committee PRI/60, Resilient floor coverings, which has the responsibility to: A list of organizations represented on this committee can be obtained on request
4、 to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Elec
5、tronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers t
6、o understand the text; present to the responsible European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a fro
7、nt cover, an inside front cover, the EN title page, pages 2 to 10, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comments 14460 28 July 2003 Addition of Annex B
8、EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 660-2 April 1999 + A1 April 2003 ICS 97.150 English version Resilient floor coverings Determination of wear resistance Part 2: FrickTaber test (includes amendment A1:2003) Revtements de sol rsilients Dtermination de la rsistance lusure Partie 2: E
9、ssai de FrickTaber (inclut lamendement A1:2003) Elastische Bodenbelge Ermittlung des Verschleiverhaltens Teil 2: FrickTaber-Prfung (enthlt nderung A1:2003) This European Standard was approved by CEN on 2 March 1999 and amendment A1 was approved by CEN on 17 January 2003. CEN members are bound to com
10、ply with the CEN/CENELEC Internal Regulations 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 national standards may be obtained on application to the Central Se
11、cretariat 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 notified to the Central Secretariat has the same status as the of
12、ficial versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. CEN European Com
13、mittee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1999 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 660-2:1999 + A1:2003 EEN 660-2:1
14、999 BSI 28 July 2003 2 Foreword This European Standard has been prepared by Technical Committee CEN/TC 134, Resilient and textile floor coverings, the Secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical t
15、ext or by endorsement, at the latest by October 1999, and conflicting national standards shall be withdrawn at the latest by October 1999. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard:
16、 Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Foreword to amendment A1 This document EN 660-2:1999/A1:2003 has been prepared by Technical Committee C
17、EN/TC 134, Resilient, textile and laminate floor coverings the Secretariat of which is held by BSI. 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 2003, and conflicting national standards
18、 shall be withdrawn at the latest by October 2003. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, I
19、celand, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and the United Kingdom. EN 660-2:1999 BSI 28 July 2003 3 1 Scope This European Standard describes the FrickTaber method for determining the wear resistance of the wear layer of polyvinyl ch
20、loride floor coverings under laboratory conditions. The test method is applicable to floor coverings with smooth surfaces. It can be used to determine the wear resistance of surfaces against abrasion and particularly for ranking different wear layer types within one type of product. It is not approp
21、riate for comparing the wear resistance of different materials, e.g. rubber and polyvinyl chloride. 2 Normative references This standard incorporates by dated or undated reference provisions from other publications. These normative references are cited at the appropriate place in the text and the pu
22、blications are listed hereafter. For dated references subsequent amendments, to or revisions of any of the publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 436, Res
23、ilient floor coverings Determination of density. 3 Principle A specimen resting on a horizontal, rotating holder table is sprinkled with abrasive grains and loaded with a pair of leather-clad abrading wheels, each of which is freely rolling round a horizontal axis. 4 Definition For the purposes of t
24、his standard, the following definition applies. 4.1 wear loss of material from the surface of a floor covering 5 Apparatus and materials 5.1 Abrader machine (Figure 1), consisting of the following. 5.1.1 Horizontal circular rotating holder table, having a diameter greater than 105 mm. The upper surf
25、ace shall be horizontal and adapted for covering with the specimen. The table is equipped with a cylindrical threaded stub and fixing device in the centre of the table and a clamping ring around the edges to hold the specimen in position (see Figure 2). Deflection under load during the test shall no
26、t exceed 0,01 mm. 5.1.2 Motor, capable of rotating the holder table with a velocity of (60 2) revolutions per minute. 5.1.3 Two cylindrical abrading wheels, made of metal or hard plastic and fitted with a leather surface, of diameter (without leather) 42 mm and width 12,7 mm with a hub hole for fixi
27、ng on to a freely rotating axle. When the test specimen is rotating in a test the two wheels roll on it, forming a circular path with an area of approximately 3 000 mm 2 . 5.1.4 Revolution counter, which automatically stops the rotating specimen holder table after a selected number of revolutions. 5
28、.1.5 Container, open at the top, capable of containing approximately 200 g of abrasive. The bottom of the container, located (10 3) mm above the specimen surface, has an opening of length 16 mm and adjustable width, which it is possible to close quickly, e.g. with a pivoting shutter. The length of t
29、he opening is aligned so that it is parallel with the radius of the specimen holder table (see Figure 2). The container is equipped with a grit feeder which enables the abrasive to fall on to the specimen at a steady rate. 5.1.6 Vacuum device, capable of removing abrasive and abraded material from t
30、he test specimen. For the purpose of this test the integral suction mechanism of the abrader is disconnected and the suction mechanism of the grit feeder is used. EN 660-2:1999 4 BSI 28 July 2003 5.2 Balance, enabling weighing with an accuracy of 0,1 mg. 5.3 Leather strip, approximately 13 mm wide a
31、nd 4 mm to 5 mm thick, of hardness such that a polished steel ball with 10 mm diameter placed on the flesh side and loaded with (10 0,1) N, gives an indentation of (0,3 to 0,5) mm depth after 30 s. 5.4 Dry, loose, abrasive corundum, free of dust and with 98 % of the grain size between 45 4m and 75 4
32、m. 6 Preparation and mounting of the abrading wheels Fix the leather strip around the wheel with solvent-free epoxy adhesive so that the grain side is turned inwards and the gap between the ends of the strip is less than 0,5 mm. When the adhesive has cured adjust the width of the strip to (12,7 0,1)
33、 mm. Turn the wheel in a lathe and finally trim in the test apparatus running for 500 revolutions with an abrasive paper of grain size 240 mesh, fixed on the specimen holder table. Attach each of the abrading wheels to an arm which is easy to lift and to lower round its centre of gravity. Locate eac
34、h wheel on the axle with a rotating bearing support. At the other end of the arm hang a counterweight to balance the wheel (see Figure 3). Load each wheel with a weight of (1 0,01) kg. Ensure that the arms are close to horizontal when the wheels are resting on the test specimen and that the distance
35、 between the common centre line of the wheels and the rotation axis (the threaded stub) of the holder table is approximately 19 mm. NOTE A leather-clad abrading wheel can be used until the diameter is less than 46 mm or the thickness of leather surface is less than 2 mm at any point. Repeated turnin
36、g or finishing is carried out only if the tester finds it necessary. 7 Sampling and preparation of specimens Take a representative sample from the available material. Take three specimens, of approximately (100 100) mm, at equal distances across the sample, the distance between the outer edge of the
37、 sample and the nearest edge of the specimen being at least 50 mm. Cut a circular hole in the centre of each specimen to adjust the specimen in the centre of the rotating table. NOTE Specimens liable to take up or lose material on the underside, e.g. felt backed vinyl carpets, can be glued to glass
38、plates. 8 Conditioning Condition the specimens and the leather-clad abrading wheels before testing to constant mass, in air at a temperature of (23 2) C and (50 5) % relative humidity. Constant mass is considered as reached when the change of mass is less than 0,002 g per day. Maintain these conditi
39、ons when carrying out the test. 9 Procedure 9.1 For heterogeneous floor coverings separate the wear layer from the sample by abrading the underside until only the wear layer is left. Determine the density of the wear layer according to EN 436, method A or B. For homogeneous floor coverings, if the s
40、ample is smooth on top and on the underside, the density may be determined using a rectangular specimen. Weigh the specimen to an accuracy of 0,1 mg and measure the length and width to 0,1 mm and the thickness to 0,01 mm accuracy. Otherwise follow EN 436, method A or B. NOTE If the density cannot be
41、 determined the loss of volume cannot be reported. 9.2 Weigh the specimens to an accuracy of 0,1 mg after conditioning. 9.3 Fix the specimen on the holder table and locate the vacuum nozzle and the abrasive container in their operating positions. Fill the container with abrasive and start the grit f
42、eeder, regulating the bottom opening of the abrasive container so that the flow of abrasive is (21 3) g/min. 9.4 Start the rotating table and when an even string of abrasive is distributed on the surface of the test specimen close the shutter and stop the rotation. EN 660-2:1999 BSI 28 July 2003 5 9
43、.5 Carefully move the abrading wheels down towards the test specimen until they rest on abrasive. Start the vacuum cleaner. Open the shutter once more and immediately after that, set the holder table with the test specimen into rotation. 9.6 Abrade one specimen during 5 000 revolutions, with a break
44、 for weighing after each cycle of 1 000 revolutions, and then test the two remaining specimens. If, however, the first specimen is abraded through before 5 000 revolutions, discard it and test the two remaining specimens in cycles of 200 revolutions stopping the test after 2 000 revolutions or when
45、the specimen is abraded through. Each time the rotation is interrupted (by the counter) close the shutter of the container and shut off the grit feeder and the vacuum cleaner. Remove the container and the vacuum nozzle and lift the arms with the abrading wheels. 9.7 Take the abrading wheels away fro
46、m the test surface and carefully sweep off the remaining loose particles with a soft brush. Loosen the test specimen from the holder table and wipe with a dry, soft cloth, pressing lightly against the surface. 9.8 Weigh the clean specimen to an accuracy of 0,1 mg. 9.9 Note the mass loss for each cyc
47、le of 200 or 1 000 revolutions. Inspect the specimen and note changes of appearance. If the product has an embossed pattern (or hollows, grooves, indentation etc.) estimate the proportion of the embossed pattern that is abraded away by comparison against the original. 9.10 When the test specimen has
48、 been abraded during 5 000 revolutions, (or 2 000 revolutions), clean it thoroughly with a white cotton cloth moistened with distilled water containing 0,1 % wetting agent. After conditioning according to Clause 8, weigh the test specimen a last time with an accuracy of 0,1 mg to obtain the total ma
49、ss loss, F tot . Abrasive grains can stick to the abraded path. Clean these away with a white cloth until the white cloth is no longer coloured by abrasive or abraded material. 10 Calculation and expression of results 10.1 Calculate the average mass loss, F m , in milligrams per 100 revolutions for each specimen as follows: 10.2 The wear loss in cubic millimetres is equal to the quotient of the final mass loss in milligrams and the density o
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