1、April 2012 Translation by DIN-Sprachendienst.English price group 7No 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 9
2、7.150!$C?“1883228www.din.deDDIN EN ISO 23996Resilient floor coverings Determination of density (ISO 23996:2007)English translation of DIN EN ISO 23996:2012-04Elastische Bodenbelge Bestimmung der Dichte (ISO 23996:2007)Englische bersetzung von DIN EN ISO 23996:2012-04Revtements de sol rsilients Dterm
3、ination de la masse volumique (ISO 23996:2007)Traduction anglaise de DIN EN ISO 23996:2012-04SupersedesDIN EN 436:1994-11www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.903.12 DIN EN ISO 23996:2012-04 2 A comma is used as the decim
4、al marker. National foreword This standard has been prepared by Technical Committee ISO/TC 219 “Floor coverings” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 23996:2012 by Technical Committee CEN/TC 134 “Resilient, textile and laminate floor coverings
5、”, (Secretariat: BSI, United Kingdom). The responsible German body involved in its preparation was the Normenausschuss Kunststoffe (Plastics Standards Committee), Working Committee NA 054-04-05 AA Bodenbelge. The DIN Standards corresponding to the International Standards referred to in this document
6、 are as follows: ISO 1183 (all parts) DIN EN ISO 1183 (all parts) ISO 24342 DIN EN ISO 24342 ISO 24346 DIN EN ISO 24346 Amendments This standard differs from DIN EN 436:1994-11 as follows: a) Clause 2 “Normative references” has been included; b) In Clause 4 a representative sample consisting of thre
7、e tiles of at least 1 000 mm 1 000 mm has been specified; c) Method B has been revised; d) Clause 8 “Test report” has been revised. Previous editions DIN EN 436: 1994-11 National Annex NA (informative) Bibliography DIN EN ISO 1183 (all parts), Plastics Methods for determining the density of non-cell
8、ular plastics DIN EN ISO 24342, Resilient and textile floor-coverings Determination of side length, edge, straightness and squareness of tiles DIN EN ISO 24346, Resilient floor coverings Determination of overall thickness EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 23996 February 2012 I
9、CS 97.150 Supersedes EN 436:1994English Version Resilient floor coverings - Determination of density Revtements de sol rsilients - Dtermination de la masse volumique (ISO 23996:2007) Elastische Bodenbelge - Bestimmung der Dichte This European Standard was approved by CEN on 24 December 2011. CEN mem
10、bers are bound to comply 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 applicat
11、ion to the CEN-CENELEC 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 translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Manage
12、ment Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherla
13、nds, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploita
14、tion in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 23996:2012: E(ISO 23996:2007) (ISO 23996:2007) Contents EN ISO 23996:2012 (E) DIN EN ISO 23996:2012-04 2 Page Foreword 3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Sampling .4 5 Atmosp
15、here for conditioning and testing .4 6 Method A .4 6.1 Principle 4 6.2 Apparatus .5 6.3 Selection of specimens .5 6.4 Test procedure .5 6.5 Calculation and expression of results .5 6.6 Precision statement .5 7 Method B .5 7.1 Principle 5 7.2 Apparatus .6 7.3 Selection of specimens .6 7.4 Test proced
16、ure .6 7.5 Calculation and expression of results .6 7.6 Precision statement .6 8 Test report 6 Bibliography 7 Foreword The text of ISO 23996:2007 has been prepared by Technical Committee ISO/TC 219 “Floor coverings” of the International Organization for Standardization (ISO) and has been taken over
17、as EN ISO 23996:2012 by Technical Committee CEN/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 Au
18、gust 2012, and conflicting national standards shall be withdrawn at the latest by August 2012. 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
19、 rights. This document supersedes EN 436:1994. 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, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Fra
20、nce, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 23996:2007 has been approved by CEN as a EN
21、ISO 23996:2012 without any modification. EN ISO 23996:2012 (E) DIN EN ISO 23996:2012-04 3 1 Scope This International Standard describes two methods for determining the density of homogeneous resilient floor coverings and solid layers of other resilient floor coverings. 2 Normative references The fol
22、lowing referenced documents are indispensable 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 24342, Resilient and textile floor-coverings Determi
23、nation of side length, edge straightness and squareness of tiles ISO 24346, Resilient floor coverings Determination of overall thickness 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 density quotient of mass divided by volume 4 Sampling Tak
24、e three tiles or a sample of at least 1 000 mm 1 000 mm for sheet material. 5 Atmosphere for conditioning and testing Condition the samples at a temperature of (23 2) C and a relative humidity of (50 5) % for a minimum of 24 h. Maintain these conditions when conducting the test. 6 Method A 6.1 Princ
25、iple A test piece of known mass is immersed in a liquid and reweighed, and its density is calculated. EN ISO 23996:2012 (E) DIN EN ISO 23996:2012-04 4 6.2 Apparatus 6.2.1 Balance, with a sensitivity of 1 mg. 6.2.2 Pad straddle, or other stationary support. 6.2.3 Beaker, of 200 ml capacity. 6.2.4 Thi
26、n wire, of maximum diameter 0,125 mm. 6.2.5 Freshly distilled water, containing not more than 0,1 % of wetting agent (to help in removing air bubbles) at a temperature of (23 2) C. 6.3 Selection of specimens Take three test specimens at equal distances from the sample, the distance between the outer
27、 edge of the sample and the nearest edge of the test piece being at least 100 mm, or from individual tiles. Each test specimen should have minimum dimensions of 30 mm 30 mm or a diameter of 36 mm. 6.4 Test procedure Weigh the test specimen with the thin wire suspended around it. Record the mass, m1.
28、 Immerse the test specimen, still suspended by the wire, in the distilled water contained in the beaker on the pan straddle or other stationary support. Remove adhering bubbles with a fine wire. Mark the level of immersion and record the mass of the immersed test specimen, m2. Immerse the remaining
29、test specimen at the same level. 6.5 Calculation and expression of results Calculate the density, , in kilograms per cubic metre, of the test specimen from the following equation: = (m1 H2O)/(m1 m2) where m1is the initial weight of the test specimen, in kilograms; m2is the weight of the immersed tes
30、t specimen, in kilograms; H2O is the density of water, at the temperature specified in 6.2.5, in kilograms per cubic metre. Calculate the mean result for the three test specimens and express the result to the nearest 1 kg/m3. 6.6 Precision statement A round-robin test will be conducted to determine
31、the precision of this method. 7 Method B 7.1 Principle A test piece of known dimensions is weighed and its density calculated from the quotient of mass and volume. This method cannot be used if the surface and/or back side has a texture. EN ISO 23996:2012 (E) DIN EN ISO 23996:2012-04 5 7.2 Apparatus
32、 7.2.1 Apparatus described in ISO 24342, for measuring the side length and width of the rectangular sample. 7.2.2 Apparatus described in ISO 24346, for measuring the thickness of the sample. 7.2.3 Balance, with a sensitivity of 1 mg. 7.3 Selection of specimens Cut three test specimens of at least 10
33、0 mm 100 mm using a rectangular shape. From the sample, cut the test specimens at equal distances from each other. The distance between the outer edge of the sample and the nearest edge of the test specimens shall be at least 100 mm. In the case of tiles, take the three individual tiles. 7.4 Test pr
34、ocedure For each test, measure and record the thickness and the dimensions to the nearest 0,1 mm. Weigh each test specimen separately and record the mass to the nearest 10 mg. 7.5 Calculation and expression of results Calculate the density, , in kilograms per cubic metre, using the following equatio
35、n and round off to the nearest 0,01. = 106 M/V where M is the mass of the test specimen, in grams; V is the volume of the test specimen, in cubic millimetres. Calculate the mean value of the three test specimen and round off to the nearest 0,1 kg/m3. 7.6 Precision statement A round-robin test will b
36、e conducted to determine the precision of this method. 8 Test report The test report shall contain the following information: a) a statement that the tests were performed in accordance with this International Standard (ISO 23996), method A or B; b) date(s) on which the tests were carried out; c) com
37、plete identification of the product tested, including type, source, colour and manufacturers reference numbers; d) previous history of the sample; e) any deviation from this International Standard which may have affected the results; f) mean value of the density. EN ISO 23996:2012 (E) DIN EN ISO 23996:2012-04 6 Bibliography 1 ISO 1183 (all parts), Plastics Methods for determining the density of non-cellular plastics 2 EN 436, Resilient floor coverings Determination of density EN ISO 23996:2012 (E) DIN EN ISO 23996:2012-04 7
