1、BS EN ISO26985:2012ICS 97.150NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISHSTANDARDResilientfloorcoveringsIdentificationoflinoleumanddeterminationofcementcontentandashresidueNational forewordThis British Standard is the UK implementation of EN ISO 26985:2012. It is ide
2、ntical to ISO 26985:2008. It supersedes BS ISO 26985:2008 and BS EN 670:1998, which are withdrawn.The UK participation in its preparation was entrusted to Technical Committee PRI/60, Resilient floor coverings.A list of organizations represented on this committee can be obtained on request to its sec
3、retary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.BS EN ISO 26985:2012This British Standardwas published under theauthority
4、 of the StandardsPolicy and StrategyCommittee on 31 May2009. The British Standards Institution 2012. Published by BSI Standards Limited 2012.Amendments/corrigenda issued since publicationDate Comments 30 April 2012 This corrigendum renumbers BS ISO 26985:2008 as BS EN ISO 26985:2012ISBN 978 0 580 75
5、246 9EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 26985 February 2012 ICS 97.150 Supersedes EN 670:1997English Version Resilient floor coverings - Identification of linoleum and determination of cement content and ash residue (ISO 26985:2008) Revtements de sol rsilients - Identification
6、du linolum et dtermination de la teneur en ciment et du taux de cendres (ISO 26985:2008) Elastische Bodenbelge - Erkennung von Linoleum und Bestimmung des Gehaltes an Bindemittel und anorganischen Fllstoffen (ISO 26985:2008) This European Standard was approved by CEN on 31 December 2011. CEN members
7、 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 application
8、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 Management
9、 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, Netherlands,
10、 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 exploitation
11、 in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 26985:2012: EForeword The text of ISO 26985:2008 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
12、ISO 26985:2012 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 August 2
13、012, 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 right
14、s. This document supersedes EN 670:1997. 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, France, G
15、ermany, 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 26985:2008 has been approved by CEN as a EN ISO 26
16、985:2012 without any modification. BS EN ISO 26985:2012 EN ISO 26985:2012 (E)INTERNATIONAL STANDARD1Resilient floor coverings Identification of linoleum and determination of cement content and ash residue1ScopeThisInternationalStandard s pecifies methods for identifying linoleumand determining the c
17、ement content andash residue of linoleum floor coverings.2Terms and definitionsFor the purposes of this document, the following terms and definitions apply.2.1ash residueresidue that remains following incineration at for2.2linoleum cementbinder in linoleum, consisting of a mixture of linseed oil and
18、/or vegetable drying oils, rosin and drying oilcatalysts, which is converted to a semi-elastic mass b yan oxidative curing process3Principles3.1 IdentificationA small specimen issaponified in a solution of potassium hydroxide inmethanol to identify linoleum from otherfloor coverings.3.2 Composition3
19、.2.1 Cement contentA specimen without the backing material is crumbled and mixed with a mixture of potassium hydroxide inmethanol. After intensive stirring at to , the mixture is filtered and carefully dried. The differencebetween the initial mass and the massof the residue is the defined mass of li
20、noleum cement.3.2.2 Ash residueTo determine the amount of ash residue, a specimen without the backing material is incinerated and the massof the residual ash is measured.500 C3h20 C25 CEN ISO 26985:2012 (E)BS EN ISO 26985:2012 ISO 2012 24Apparatus andmaterials4.1Apparatus4.1.1 Grater.4.1.2 Tared bea
21、kers .4.1.3 Porcelain crucibles.4.1.4 Desiccator (vacuum type), containing a suitable desiccant, e.g. silica gel.4.1.5 Furnace, capable of being controlled at .4.1.6 Balance, having an accuracy of.4.1.7 Laboratory sieve, with a nominal aperture size of .4.1.8 Ultrasonic bath , or equivalent device.4
22、.1.9 Centrifuge or vacuum filter (type A2) andsuction device, e.g. a water-jet pump.4.1.10 Bunsen burner .4.2Materials4.2.1 Methanol (methyl alcohol), analyticalgrade.4.2.2 Potassium hydroxide (analytical grade)in methanol solution , with a concentration of .5Sampling and preparation of specimens5.1
23、SamplingTake a representative sample from the available material. Takefivespecimens, each with a minimum area of, from across the width of the sample, or from individual tiles, the distance between the edge of thesample and the nearest edge of the specimen being at least .Cut a square of approximate
24、ly from a specimen.5.2Determination of cement contentRemove the backing material and grate the specimen. Use that part which passes through a sieve.5.3Determination of ash residueRemove the backing material and cut the specimen into small pieces of approximately .6Atmosphere for conditioning and tes
25、tingCondition the specimen, at a temperature of and a relativehumidity of , fora minimum of. Maintain these conditions during the test.500 C 10 C0,1mg0,5mm0,5mol/l50cm2100mm20mm 20mm0,5mm5mm 5mm23 2 C50 5%24hBS EN ISO 26985:2012 EN ISO 26985:2012 (E) ISO 2012 37Test procedure7.1 IdentificationSaponi
26、fy the specimen in excess potassium hydroxide/methanol solution without stirring. After , recordwhether complete disintegration of the linoleum has taken place. If disintegration has not taken place, thesample is not identified as linoleum, so do not carry out the tests described in 7.2 and 7.3.7.2
27、Determination of cement contentWeigh approximately of the grated specimen, with particle size , in a tared beaker.Add approximately ofthe potassium hydroxide/methanol solutionand stir for . Ensure thatthe temperature does not exceed , because wood- and/or cork-flour can be affected.Weigh the typeA2
28、filter (if used) and record the mass to the nearest .Centrifuge or vacuum filter the mixture using the typeA2 filter and rinse the residue at a temperature of .Condition thedryresidue in the filter or centrifuge, asdescribedin Clause6,for a minim um of , andrecordthe mass (including the A2 filter, i
29、f used)to the nearest .7.3 Determination of ash residueDetermine the tared mass of aporcelain crucible as follows. Prepare acruciblebyheating in the furnace atfor at least . Allow cooling in the desiccator for at least and weigh the crucible. Repeat theprocessof heating,cooling and weighing untilthe
30、 resultsoftwo consecutive weighings donot differ from eachotherbymore than , i.e. the mass isvirtually constant.Weigh approximately of the crumbled specimen in the tared porcelain crucible. Heat the crucible using aBunsen burner, in a way that allows the specimen to burn in a controlled manner. Plac
31、e the crucible andcontents in a furnace at , forat least , to allow incineration to proceed to completion, i.e. whenno carbonaceous matterremains in the crucible.Transfer thecrucibleand contents to the desiccatorand allow tocool fo r at least . Determinethe mass of thecrucible and residue to the nea
32、rest . Repeat the process of incineration, cooling and weighting until theresults of two consecutive weightings do not differ from eachother bymore than ,i.e. the mass is virtuallyconstant.8Calculation and expression ofresults8.1 IdentificationRecord whether complete disintegration takes place.24h1g
33、 null 0,5mm10ml 10 0,5min25 C0,01g40 C24h0,01g500 C3h1h0,5mg2g500 10 C3h1h0,01g0,5mgBS EN ISO 26985:2012 EN ISO 26985:2012 (E) ISO 2012 48.2Determination of cement contentCalculate the linoleum cement content, as a percentage by mass, using the following fomula:whereis the initial mass of the specim
34、en;is the mass of the dry residue (excluding the A2 filter if used).Express the linoleum cement content as the average of the results for the number of specimens tested, andrecord these to the nearest .8.3Determination of ash residueCalculate the ash residue, as a percentage bymass, using the follow
35、ing fomula:whereis the initial mass of the specimen;is the mass of the ash residue.Expressthe inorganic filler content as theaverage of the results for the number of specimenstested, andrecordthese to the nearest .9Precision statementA round-robin test will be conducted to determine the precision of
36、 this test method.10 Test reportThe test report shall contain the following information:a) a statement that the tests were performed in accordance withthis International Standard (ISO26985:2008);b) a complete identification of the product tested, including type, source, colour, and manufacturers ref
37、erencenumbers;c) previous history of the sample;d) a statement as to whether the sample has been identified as linoleum;e) the average cement content and the average ash residue, as a percentage, if relevant;f) any deviation from this International Standard which could have affected the results;g) t
38、he date of the test.m 1 m 2m 1 100m 1m 20,5%m 3m 1 100m 1m 30,5%BS EN ISO 26985:2012 EN ISO 26985:2012 (E) ISO 2012 5Bibliography1EN670, Resilient floor coverings Identification of linoleum and determ ination of cement content andash residueBS EN ISO 26985:2012 EN ISO 26985:2012 (E) ISO 2012 ICS97.1
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