1、February 2009DEUTSCHE NORM English price group 13No part of this standard 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 79.080; 97.150!$V)+“1
2、510608www.din.deDDIN EN 13696Wood flooring Test methods to determine elasticity and resistance to wear and impactresistanceEnglish version of DIN EN 13696:2009-02Holzfubden Prfverfahren zur Bestimmung der Verformbarkeit und der Bestndigkeit gegenVerschlei und gegen StobeanspruchungEnglische Fassung
3、DIN EN 13696:2009-02SupersedesDIN V ENV 13696:2000-07www.beuth.deDocument comprises 26 pagesDIN EN 13696:2009-02 2 National foreword This standard has been prepared by Technical Committee CEN/TC 175 “Round and sawn timber” (Secretariat: AFNOR, France). The responsible German body involved in its pre
4、paration was the Normenausschuss Holzwirtschaft und Mbel (Timber and Furniture Standards Committee), Technical Committee NA 042-01-14 AA Spiegel-ausschuss zu CEN/TC 175 und ISO/TC 218 Rund- und Schnittholz. Amendments This standard differs from DIN V ENV 13696:2000-07 as follows: a) Test methods hav
5、e been given in more detail. b) Clause 7 “Impact resistance“ has been added. c) The standard has been editorially revised. Previous editions DIN V ENV 13696: 2000-07 EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 13696December 2008ICS 79.080; 97.150 Supersedes ENV 13696:2000 English VersionWood f
6、looring - Test methods to determine elasticity andresistance to wear and impact resistancePlanchers en bois - Mthodes dessai pour dterminerllasticit et la rsistance labrasion et la rsistance auchocHolzfubden - Prfverfahren zur Bestimmung derVerformbarkeit und der Bestndigkeit gegen Verschleiund gege
7、n StobeanspruchungThis European Standard was approved by CEN on 8 November 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. Up-to-date lists and bib
8、liographical 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 translationunder the responsibility o
9、f 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, Hungary, Iceland, Ireland
10、, 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: rue de Stassart, 36 B-1
11、050 Brussels 2008 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13696:2008: EEN 13696:2008 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Common methods .4 4.1 Conditioning .4 4.2 Mea
12、surement of the thickness of the lacquer 5 5 Wear 6 5.1 Principle 6 5.2 Test pieces .6 5.3 Abrading system 6 5.4 Test report . 13 6 Elasticity of the lacquer . 13 6.1 Principle . 13 6.2 Equipment . 14 6.3 Test piece 16 6.4 Procedure 17 6.5 Expression of the results for a test piece 17 6.6 Expression
13、 of the result for a batch . 17 6.7 Test report . 18 7 Impact resistance 18 7.1 Principle . 18 7.2 Apparatus 18 7.3 Test specimens . 22 7.4 Conditioning 22 7.5 Procedure 22 7.6 Expression of results . 23 7.7 Test report . 23 Bibliography . 24 DIN EN 13696:2009-02 EN 13696:2008 (E) 3 Foreword This do
14、cument (EN 13696:2008) has been prepared by Technical Committee CEN/TC 175 “Round and sawn timber”, the secretariat of which is held by AFNOR. 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 June
15、2009, and conflicting national standards shall be withdrawn at the latest by June 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
16、. This standard supersedes ENV 13696:2000. 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,
17、 Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. DIN EN 13696:2009-02 EN 13696:2008 (E) 4 1 Scope This European Standard specifies a test method to d
18、etermine the resistance to wear of lacquered wood floorings, a method to test the elasticity of the lacquer and a method to determine resistance to impact of lacquered wood floorings. 2 Normative references The following referenced documents are indispensable for the application of this document. Fo
19、r dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 13756:2002, Wood flooring Terminology EN ISO 868, Plastics and ebonite Determination of indentation hardness by means of a durometer (Shore
20、 hardness) (ISO 868:2003) EN ISO 291, Plastics Standard atmospheres for conditioning and testing (ISO 291:2008) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 13756:2002 and the following apply. 3.1 lacquer film making agent modifying surface layer p
21、roperties NOTE It has a measurable thickness. 4 Common methods 4.1 Conditioning 4.1.1 Equipment Enclosures with the following climatic conditions: climate A temperature of (20 2) C and relative humidity of (65 5) %; or climate B temperature of (23 2) C and relative humidity of (50 5) %. 4.1.2 Proced
22、ure The manufacturer shall specify either of the conditioning climates above. Unless otherwise specified, all equipment and materials required for the test shall be stabilised and kept in an enclosure in the climate specified. DIN EN 13696:2009-02 EN 13696:2008 (E) 5 4.2 Measurement of the thickness
23、 of the lacquer 4.2.1 Equipment 4.2.1.1 Optical instrument An instrument with a resolution of at least ( 2) m. NOTE For instance, a binocular microscope with a magnification of 100 to 200 and a built-in measuring scale in the field of view. 4.2.1.2 Contrast marking A water-based felt tip pen. 4.2.2
24、Sampling Choose the location from which the test pieces are taken, depending on the purpose of the measurement (either in an unworn area or in a worn area). Test pieces with a size at least 10 mm x 10 mm and by the full thickness shall be cut out of one of the wear test pieces or area to be tested i
25、n elasticity. The number of test pieces is specified in 5.3.3.4.1 and 6.4.1. 4.2.3 Procedure If needed, contrast mark the lacquered face with the felt-tip pen specified in 4.2.1.2. Clear-cut with a razor blade the edge of the lacquered face to be inspected. Mount the test piece with the clear-cut ed
26、ge facing the microscope. For each test piece, make at least two measurements to the accuracy allowed by the resolution of the optical instrument. Measurements of lacquer above open holes in the wood shall not be taken into account. 4.2.4 Expression of the results When required, average the measurem
27、ents made on each test piece. If there is more than one test piece, calculate to one significant figure the mean value and the coefficient of variation (expressed as a percentage) of the results. DIN EN 13696:2009-02 EN 13696:2008 (E) 6 5 Wear 5.1 Principle The resistance to wear is evaluated by abr
28、ading the face of representative test pieces or specimens with a specified abrasive applied by means of two loaded wheels. The number of rotations, necessary to reach a defined wear, is used to evaluate the resistance to wear. 5.2 Test pieces 5.2.1 Dimensions The test shall be carried out on a test
29、piece. The test piece shall have the shape of: either a square with a side of 120 mm, its corners being trimmed so as to have a diagonal length reduced to about 130 mm, or, a disc with a diameter of about 130 mm. Samples, from which it is intended to obtain a test piece, may be smaller than the abov
30、e dimensions. In that case, a test piece shall be produced by jointing two or more elements according to the manufacturers specifications. Bore a hole (6 0,5) mm diameter and axis normal to the surface at the centre of the test piece. 5.2.2 Sampling Three test pieces shall be cut. The clearance betw
31、een two test pieces shall be at least 100 mm. For elements which have to be jointed, the three test species shall be made out of elements picked out at random. NOTE This sampling gives an estimation of the property of the lot. 5.2.3 Conditioning The test pieces shall be conditioned to constant mass
32、in one of the climates defined in 4.1. Prior to testing, the lacquer shall be fully cured according to the manufacturers instructions. 5.3 Abrading system 5.3.1 Principle The system described in this Standard is a grit feeder system: a specified loose abrasive is fed continuously on to the face of t
33、he test piece, in the track of the loaded wheels. NOTE Other methods described in other standards could be possible. In this case, the results are expressed without making reference to this Standard. DIN EN 13696:2009-02 EN 13696:2008 (E) 7 5.3.2 Test equipment and materials 5.3.2.1 Abrading equipme
34、nt and materials 5.3.2.1.1 Abrader Supporting disc Supporting disc shall have a minimum diameter of 105 mm, rotating in the horizontal plane with a permitted deviation of 2 mm/m, at (60 2) r.p.m, the test piece being tightly held flat by means of a suitable clamping device. Abrading wheels Two cylin
35、drical wheels free to turn on their axis, balanced by lever and counterweight, with nominal diameter and width of respectively 44,4 mm and 12,7 mm. They are fitted with a leather strip having a width of (12,7 0,1) mm and a minimum thickness of 1,5 mm. The overall diameter of the wheels, when fitted
36、with leather strips, shall not be less than 47,4 mm. The distance between the internal faces of the wheels shall be (53 2) mm, their common axis being set by 20 mm nominally of the axis of the test piece revolving support. The axis of rotation of the test piece shall be equidistant from the two whee
37、ls. A device shall apply the abrading wheels on the test piece with a force of (10 0,1) N by each wheel. The device shall be able to maintain the 20 mm eccentricity for all possible thicknesses of test pieces. Revolution counter A revolution counter is needed to record the number of revolutions of t
38、he supporting disc. DIN EN 13696:2009-02 EN 13696:2008 (E) 8 Dimensions in mm Key 1 Abrasive tank 9 Counterweight 2 Suction nozzle 10 Wearing surface 3 Clamping ring 11 Direction of rotation 4 Test piece 12 Screwed pin 5 Supporting disc 13 Nut 6 Testing weight 14 Plate 7 Abrading wheel 8 Lever Figur
39、e 1 Example of an abrader with grit feeder DIN EN 13696:2009-02 EN 13696:2008 (E) 9 Grit feeder Grit feeder shall have a capacity of about 200 g of grit. It shall be openable at the top and at the bottom. The bottom opening shall be (10 1) mm above the face of the test piece and have a length of (16
40、 1) mm. The length of the bottom opening shall be installed radially to the supporting disc. To make sure of a regular flow, a device shall be provided in the grit feeder to ensure a regular flow. A further device ensuring an immediate stop of the feeding is also required. Vacuum cleaning device A s
41、ingle nozzle (3 2) mm above the track to be worn, shall be installed in the axial vertical plane between the two wheels before the grit feeder (relative to the rotation direction) and shall provide a differential pressure of (2 0,5) kPa. NOTE Equipment of this type, Taber Abrader and Taber Grit Feed
42、er, is made by TELEDYNE TABER. This information is given for the convenience of users of this European Standard and does not constitute an endorsement by CEN of the product named. Equivalent products may be used if they can be show to lead to the same results. 5.3.2.1.2 Additional material or equipm
43、ent Weighing equipment For calibrating, the force applied by the abrading wheels on the test piece; and for calibrating the grit flow, a weighing equipment with an accuracy of 1 g is needed. It shall be accurate to 1 g. Leather strip The leather strip is to be fitted on the perimeter of the abrading
44、 wheels. Its hardness shall be suitable for the purpose. It is measured according to the procedure in EN ISO 868 with a Shore-Durometer of Type A with the following deviations: Shore-A hardness is measured at four points in the middle of the tire tread of abrading wheels (instead of the demands in 5
45、.1, 5.2 and 8.1); hardness of the leather is suitable if all the results are contained within the range A/1:85 A/1:95. Abrading plate (to calibrate the leather) A plate fitted with a grinding paper with a grain of 240 and a plate fitted with a grinding paper with a grain of 150 according to ISO 6344
46、-1 (about 0,06 mm). Abrading material Pure Carborundum grit (di-aluminium tri-oxide) falling through a 240 meshes per inch sieve and retained on a 280 meshes per inch sieve (grade 240). NOTE These sieves permit grit of 50 m to 63 m to fall through. Stopwatch A stopwatch accurate to 0,1 s. A tank to
47、recover the grit A tank of known mass to recover the grit when calibrating the grit feeder. DIN EN 13696:2009-02 EN 13696:2008 (E) 10 Calibration plates Calibration plates made of cast acrylic. NOTE Equipment of this type, Taber Abrader and Taber Grit Feeder, are made by TELEDYNE TABER. This informa
48、tion is given for the convenience of users of this European Standard and does not constitute an endorsement by CEN of the product named. Equivalent products may be used if they can be show to lead to the same results. 5.3.2.2 Equipment to evaluate the wear of the abraded areas 5.3.2.2.1 For visual o
49、bservation transparent template: each quadrant is divided into four sectors of 22,5; contrast making solution: water-based solution of 1 % Methylene or Alkali Blue. 5.3.2.2.2 Equipment to measure the thickness of the lacquer Defined in 4.2. 5.3.3 Procedure 5.3.3.1 Preparation of the abrader 5.3.3.1.1 Installation of the leather strips The leather strips, conditioned in the climate used in the test and defined in 4.1.2, shall be bonded with their back face to the abrading wheels, by means of a solvent free
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