1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 13442:2013Wood flooring and woodpanelling and cladding Determination of the resistanceto chemical agentsBS EN 13442:2013 BRITISH STANDARDNational forewordThis British Stand
2、ard is the UK implementation of EN 13442:2013. Itsupersedes BS EN 13442:2002 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee B/543, Round and sawn timber.A list of organizations represented on this committee can beobtained on request to its secretary.Th
3、is publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2013. Published by BSI StandardsLimited 2013ISBN 978 0 580 74826 4ICS 79.080Compliance with a British Standard cannot confer immun
4、ity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 March 2013.Amendments issued since publicationDate Text affectedBS EN 13442:2013EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 13442 March 2013 ICS 79.080 Super
5、sedes EN 13442:2002English Version Wood flooring and wood panelling and cladding - Determination of the resistance to chemical agents Planchers en bois et lambris et bardages en bois - Dtermination de la rsistance aux agents chimiques Holzfubden und Wand- und Deckenbekleidungen aus Holz - Bestimmung
6、 der chemischen WiderstandsfhigkeitThis European Standard was approved by CEN on 5 February 2013. CEN members 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
7、-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, German). A version in any other language made by translat
8、ion 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, Cyprus, Czech Republic, Denmark, Estonia, Finland,
9、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 United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION CO
10、MIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 13442:2013: EBS EN 13442:2013EN 13442:2013 (E) 2 Contents Page Fo
11、reword 3 Introduction .4 1 Scope 5 2 Normative references 5 3 Terms and definitions .5 4 Principle 5 5 Test pieces and test specimens .5 5.1 Dimensions .5 5.2 Sampling .6 6 Equipment and materials 6 6.1 Apparatus .6 6.2 Test equipment 7 6.3 Chemical agents 7 7 Procedure .9 7.1 Test pieces and test s
12、pecimen .9 7.2 Chemical test 9 8 Examination of the test piece .9 8.1 Rating code 9 8.2 Procedure 10 9 Expression of results . 10 9.1 For each test area . 10 9.2 For each test agent . 10 9.3 For the whole test . 10 10 Test report . 10 Annex A (informative) Direct light source 12 Bibliography . 13 BS
13、 EN 13442:2013EN 13442:2013 (E) 3 Foreword This document (EN 13442:2013) 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 identi
14、cal text or by endorsement, at the latest by September 2013 and conflicting national standards shall be withdrawn at the latest by September 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 hel
15、d responsible for identifying any or all such patent rights. This document supersedes EN 13442:2002. The following modifications have been made: 6.1.2, light sources has been modified; Table 1, test agent has been modified; A new Annex A has been added. According to the CEN-CENELEC Internal Regulati
16、ons, 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy
17、, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 13442:2013EN 13442:2013 (E) 4 Introduction This standard is one of a series of standards about wood in flooring (including parq
18、uet) and wood panelling and cladding. BS EN 13442:2013EN 13442:2013 (E) 5 1 Scope This European Standard specifies a test method to determine the resistance of the surface of an element of wood flooring, panelling and cladding, to a predetermined list of chemical agents they may be exposed to during
19、 their service life. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document
20、 (including any amendments) applies. EN 13756:2002, Wood flooring Terminology EN ISO 3668, Paints and varnishes Visual comparison of the colour of paints (ISO 3668) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 13756:2002 and the following apply. 3.
21、1 test piece part, of a size suitable for testing, taken from an element 3.2 test specimen either a full element or an assembly of elements to be tested 3.3 test surface part of the test piece, where the test area is located Note 1 to entry: For products made from small elements the test piece can b
22、e the same as the test specimen. 3.4 test area area under the Petri dish 3.5 reference area any unexposed surface of the test specimen close to the test area but outside the Petri dish 4 Principle Application of a liquid test agent to a surface by means of saturated paper, covered by a glass Petri d
23、ish. After a specified period of time, removal of the paper, washing and drying of the surface and examination for visible change. Assessment of the test results in terms of a numerical rating code. 5 Test pieces and test specimens 5.1 Dimensions A test piece shall have a minimum size of 80 mm by 80
24、 mm by the thickness of the element, see Figure 1. BS EN 13442:2013EN 13442:2013 (E) 6 Dimensions in millimetres Key 1 test surface 2 test area 3 Petri dish l1 80 + 60(n - 1), minimum distance between the edge and the next test area(s) according to the number of test areas l2 20 mm, minimum distance
25、 between any test area and the edge or another test arean number of test areas Figure 1 Dimensions of a test piece If the size of the element delivered by the manufacturer does not allow the cutting of a test piece, a test specimen shall be assembled in accordance with the manufacturers specificatio
26、n, which allows to cut the necessary test pieces. 5.2 Sampling Three test pieces or test specimens shall be tested for each agent to be applied. 6 Equipment and materials 6.1 Apparatus 6.1.1 Conditioning If a conditioning system is available, the following climate shall be used: temperature (23 2) C
27、 ; relative humidity (50 5) % . BS EN 13442:2013EN 13442:2013 (E) 7 6.1.2 Light sources The following types of lights are considered: diffused light source and direct light source. 6.1.2.1 Diffused light source This source provides evenly diffused light, giving an illumination on the test area of be
28、tween 2 000 Ix and 5 000 lx. The light source shall have a correlated colour temperature of (6 500 50) K and an Ra(the indication of depiction of colours) greater than 92, by using a colour matching booth in accordance with EN ISO 3668. 6.1.2.2 Direct light source. This source may be used in additio
29、n to the diffused light source. It is described in Annex A. NOTE This source may give different information than the diffused light source for specific applications. 6.2 Test equipment 6.2.1 Pieces of cellulose filter paper to apply each of the test agents, free of dyes and of chemicals, with a gram
30、mage of 400 g/m2 to 500 g/m2. They shall have an area of (500 50) mm2. Their shape shall be chosen to suit the surface of a small element or a small single parquet strip without overlapping the edges of the element or parquet strip to be tested. 6.2.2 Glass Petri dish. 6.2.3 Pair of tweezers. 6.2.4
31、Absorbent paper or tissue, with good absorbent properties, free of dyes and of chemicals. 6.2.5 White, soft, absorbent cotton cloths. 6.2.6 Vessels for containing test agents during soaking of filter paper. 6.3 Chemical agents 6.3.1 Test agents The test agents are listed in Table 1. BS EN 13442:2013
32、EN 13442:2013 (E) 8 Table 1 Test agents Agent Initial temperature of the agent 5 C C Duration Distilled water (see 6.3.2.1) 20 (24 1) h Detergent (see 6.3.2.2) 20 (24 1) h Acetone, purity grade min. mass fraction of 99,5 % 20 (120 10) s Ethanol, chemical pure, not denaturated, mass fraction of 50 %
33、in distilled water 20 (24 1) h Plain red wine, alcohol with a volume fraction of 10 % to 12 % 20 (24 1) h Red wine vinegar, acetic acid solution with a volume fraction of 3 % to 5 % 20 (24 1) h Olive oil 20 (24 1) h Cows milka , mass fraction of 3 % to 5 % fat 20 (24 1) h Coffeea, 40 g instant, free
34、ze-dried coffee per l of boiling water 80 (24 1) h Black tea, 10 g of tea leaves is infused with 1 l of boiling water. Tea is allowed to draw for 5 min. 80 (24 1) h Ammonia solutionb at 10 % in water 20 (8 1) h Blue/black ink 20 (24 1) h aThe test agents cows milk, coffee and tea can be used only fo
35、r four hours. bThe ammonia solution can be used only for one month. The test agents shall be stored in sealed glass bottles in a dark place and shall be conditioned to the test temperature prior to use. Cows milk, coffee, tea and wine shall be fresh. 6.3.2 Cleansing agents 6.3.2.1 Distilled water, n
36、ot only deionised. 6.3.2.2 House keeping detergent, of the following composition: a) a mass fraction of 12,5 % of a sodium -1-alkyl-arylsulphonate, where alkyl is a linear 12-14 C alkyl group; b) a mass fraction of 12,5 % polyethoxylated derivates of primary or secondary (C8- C16) alcohols with 5 to
37、 15 ethoxylated groups having a cloud point of 25 C to 75 C in 1 % by weight aqueous solution (determination of cloud point is described in ISO 1065); c) a mass fraction of 5 % ethanol, chemical pure, not denaturated, minimum mass fraction of 96 %; d) a mass fraction of 70 % water (see 6.3.2.1). BS
38、EN 13442:2013EN 13442:2013 (E) 9 The house keeping detergent shall be stored in a glass bottle in a cool dark place and should be used within 1 year of the day of preparation. 6.3.2.3 Cleansing solution containing 15 ml/l of the house keeping detergent (see 6.3.2.2) in water (see 6.3.2.1). This solu
39、tion shall be freshly prepared on each occasion. 7 Procedure 7.1 Test pieces and test specimen If the test piece or test specimen is coated, carry out the test after full curing of the coating. Relevant information shall be provided by the manufacturer. Wipe the test surface carefully with a dry clo
40、th (see 6.2.5) before testing. 7.2 Chemical test Immediately after the conditioning, if any, carry out the test in an atmosphere of (23 2) C. Place the test surface horizontally. Test it with the test agents specified in 6.3.1 at test areas, their centre being not more and not less than 60 mm apart,
41、 centre to centre and not less than 40 mm from any edge of the test surface. Immerse a piece of filter paper (see 6.2.1) into a test agent (see 6.3.1) for (30 1) s, lift with the pair of tweezers (see 6.2.3) and wipe off against the edge of the vessel (see 6.2.6). Quickly place the filter paper on t
42、he test area and immediately cover with an inverted glass Petri dish (see 6.2.2). The filter paper shall not touch the edge of the glass Petri dish. Record the position of each impregnated paper on each test area for each test agent. After the stated duration for each test agent used (see 6.3.1), re
43、move the glass Petri dish and lift off the filter paper with the pair of tweezers. Do not remove fibres of paper adhering to the test area. Soak up any remaining test agent with the absorbent paper (see 6.2.4) without rubbing and leave the test surface undisturbed for 16 h to 24 h in the test atmosp
44、here without covering it. The test area shall be sufficiently protected against dust without limiting in any way the free access of air. After the expiry of the 16 h to 24 h, wash the test surface by lightly rubbing it with the absorbent paper or tissue (see 6.2.4) soaked in cleansing solution (see
45、6.3.2.3) and then with another absorbent paper or tissue soaked in distilled water (see 6.3.2.1). Finally wipe the surface carefully with a dry cloth (see 6.2.5). At the same time, wash and dry the same way a reference area on the test surface that has not been exposed to the test agent. Leave the t
46、est surface undisturbed, without covering it, for (30 1) min in the test atmosphere, then proceed to the examination (see Clause 8). 8 Examination of the test piece 8.1 Rating code Rate the test area by comparison with the reference area for each test agent according to the following numerical ratin
47、g code: 5 No visible changes (no damage). BS EN 13442:2013EN 13442:2013 (E) 10 4 Slight change in gloss level and colour visible only when the light source is mirrored in the test surface on or quite near the mark and is reflected towards the observers eye, or a few isolated marks just visible. 3 Sl
48、ight mark, visible in several viewing directions; for example, almost the complete shape of the filter paper is just visible. 2 Strong mark, the structure of the surface being however largely unchanged. 1 Strong mark, the structure of the surface being changed or the surface material being totally o
49、r partially removed or the filter paper adhering to the surface. If other notable changes are at hand, this shall be reported. 8.2 Procedure Carefully examine the test area for damage, e.g. discolouration, change in gloss and colour, blistering and other defects. For this purpose, illuminate the surface separately using each of the two light sources (see 6.1.2.1 and 6.1.2.2) and examine from different angles, including angle combinations such that the light is reflected from the test surface and towards
