1、BSI Standards PublicationBS EN 1903:2015Adhesives Test methodfor adhesives for plastic orrubber floor coverings or wallcoverings Determinationof dimensional changes afteraccelerated ageingBS EN 1903:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 1903:2015.
2、 Itsupersedes BS EN 1903:2008 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PRI/52, Adhesives.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessa
3、ryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2015. Published by BSI StandardsLimited 2015ISBN 978 0 580 85710 2ICS 83.180Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was publis
4、hed under the authority of theStandards Policy and Strategy Committee on 30 April 2015.Amendments issued since publicationDate Text affectedBS EN 1903:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1903 April 2015 ICS 83.180 Supersedes EN 1903:2008English Version Adhesives - Test method fo
5、r adhesives for plastic or rubber floor coverings or wall coverings - Determination of dimensional changes after accelerated ageing Adhsifs - Mthodes dessai des adhsifs aux revtements de sol ou mural en plastique ou en caoutchouc - Determination des variations dimensionnelles aprs un vieillissement
6、acclr Klebstoffe - Prfverfahren fr Klebstoffe fr Boden- und Wandbelge aus Kunststoff oder Gummi - Bestimmung der Manderungen nach beschleunigter Alterung This European Standard was approved by CEN on 16 February 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which st
7、ipulate 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 CEN-CENELEC Management Centre or to any CEN member. This Europea
8、n 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 Centre has the same status as the official versions. CEN members are t
9、he national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Roman
10、ia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitation in any form and by
11、any means reserved worldwide for CEN national Members. Ref. No. EN 1903:2015 EBS EN 1903:2015EN 1903:2015 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Principle 4 5 Apparatus and materials .4 6 Preparation of test specimens .7 6.1 Conditioning of fib
12、re cement substrate.7 6.2 Conditioning of test covering .7 6.2.1 Room temperature storage .7 6.2.2 Elevated temperature pre-treatment 7 6.3 Sampling and conditioning of adhesive 7 6.4 Datum points 7 6.4.1 Fixing of gauge positions .7 6.4.2 Edge to edge measurements 7 6.5 Initial measurements of dime
13、nsions prior to bonding.7 6.6 Preparation of bonded test specimens .8 6.6.1 Cleaning 8 6.6.2 Application of adhesive 8 6.6.3 Bonding 8 7 Procedure .8 7.1 Preconditioning 8 7.2 Conditioning cycle (accelerated ageing) .8 7.3 Subsequent cycles 8 8 Evaluation and expression of results 9 9 Test report 9
14、BS EN 1903:2015EN 1903:2015 (E) 3 Foreword This document (EN 1903:2015) has been prepared by Technical Committee CEN/TC 193 “Adhesives”, the secretariat of which is held by AENOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or b
15、y endorsement, at the latest by October 2015 and conflicting national standards shall be withdrawn at the latest by October 2015. 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
16、 identifying any or all such patent rights. This document supersedes EN 1903:2008. The main change in respect to EN 1903:2008 is the change of the roller dimensions. SAFETY PRECAUTIONS Persons using this document should be familiar with the normal laboratory practice, if applicable. This document do
17、es not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any regulatory conditions. According to the CEN-CENELEC Internal Regulations, the national st
18、andards 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, Latvia, Lithuania,
19、 Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 1903:2015EN 1903:2015 (E) 4 1 Scope This European Standard specifies a test method that measures the dimensional changes of a plastic or rubber flo
20、or or wall covering bonded to a given substrate after accelerated ageing. The term “wall covering” does not include any type of wallpaper. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For d
21、ated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 923:2005+A1:2008, Adhesives - Terms and definitions EN 1067, Adhesives - Examination and preparation of samples for testing EN ISO 9142, Adhes
22、ives - Guide to the selection of standard laboratory ageing conditions for testing bonded joints (ISO 9142) EN ISO 15605, Adhesives - Sampling (ISO 15605) ISO 554, Standard atmospheres for conditioning and/or testing - Specifications 3 Terms and definitions For the purposes of this document, the ter
23、ms and definitions given in EN 923:2005+A1:2008 and the following apply. 3.1 covering flexible resilient or textile floor covering or wall covering 3.2 adhesive for coverings adhesive which is intended to produce firm and durable bonds between coverings and various substrates 4 Principle This test m
24、ethod gives a measure of the suitability of a plastic or rubber floor or wall covering/adhesive combination by monitoring dimensional changes during defined conditioning sequences when bonded to a specific substrate. 5 Apparatus and materials 5.1 Notched trowel (for the shape of the notch, see Figur
25、e 1) with dimensions a, b and c specified by the adhesive manufacturer. BS EN 1903:2015EN 1903:2015 (E) 5 Key a notch depth b notch width c notch distance Figure 1 Shape of notches of notched trowels 5.2 Roller, of width (60 5) mm, diameter (90 5) mm and total mass (3,50 0,05) kg with a handle at 90
26、 to the axis (as an example, see Figure 2). Dimensions in millimetres Figure 2 Roller NOTE The length of the handle is not critical and can be used for setting the total mass. 5.3 Heating chamber, ventilated and adjustable to a temperature between 20 C and 200 C according to EN ISO 9142. 5.4 Primer,
27、 if applicable. BS EN 1903:2015EN 1903:2015 (E) 6 5.5 Test covering, three test pieces for each combination with adhesive dimensions of (250 5) mm (250 5) mm or (300 5) mm (300 5) mm. 5.6 Substrate, one uncoated fibre cement panel, fully compressed and autoclaved, of a minimum thickness of approxima
28、tely 8,0 mm for each test piece. Dimensions shall not be greater than 50 mm longer than the distance between the datum points, i.e. each datum point shall not be greater than (25 1) mm from the outer edge (see Figure 3). NOTE 1 The thickness is not critical. NOTE 2 Depending on the source of the fib
29、re cement panels the surfaces can differ with respect to gloss, absorbency and strength. In this case, it is important to do some preliminary assessment (i.e. peel tests) of the panels to identify the preferred side for testing. The preferred side will be called the upper side of the substrate in th
30、is standard. Dimensions in millimetres Key 1 grain direction a measurements between studs b edge to edge measurements Figure 3 Measurements Where edge to edge measurements are being carried out, recommended dimensions are approximately 300 mm 300 mm. 5.7 Suitable measuring devices, capable of measur
31、ing to the nearest 0,01 mm over a length of either 200 mm or 250 mm, e.g. an elongation meter. 5.8 Adhesives, for fixing gauge studs to the covering surface if required by the measuring method. BS EN 1903:2015EN 1903:2015 (E) 7 6 Preparation of test specimens 6.1 Conditioning of fibre cement substra
32、te Place the test panels (5.6) in a heating chamber (5.3) for 6 h at (80 2) C. Ensure that the test panels are spaced in such a way as to enable a free passage of air over them. At the end of this period, remove the test panels from the heating oven and store in a standard atmosphere of (23 2) C and
33、 (50 5) % relative humidity for at least 48 h prior to use. 6.2 Conditioning of test covering 6.2.1 Room temperature storage Condition all test pieces (5.5) in a standard atmosphere of (23 2) C and (50 5) % relative humidity for at least 24 h prior to use. 6.2.2 Elevated temperature pre-treatment Pl
34、ace the test pieces (5.5) on a firm horizontal substrate (5.6) and heat for 6 h in a heating chamber (5.3) at (80 2) C. Ensure that the test pieces and substrate are spaced in such a way as to enable a free passage of air over them. At the end of this period, remove the test pieces and supports from
35、 the heating chamber and store for 48 h in a standard atmosphere of (23 2) C and (50 5) % relative humidity prior to use. The pre-treatment will release any stresses in the covering so that it is in a relaxed state when the actual test is commenced. The pre-treatment of the test coverings may be run
36、 together with the conditioning of the substrate (6.2). In most cases a more practical assessment is required. Pre-conditioning of the floor or wall covering materials at elevated temperature (6.2.2) may not be regarded as necessary. If knowledge of dimensional changes after this pre-treatment is re
37、quired, dimensions should be measured as given in 6.5 before and after the pre-treatment. 6.3 Sampling and conditioning of adhesive Take a sample in accordance with EN ISO 15605 of the adhesive to be tested and examine and prepare it in accordance with EN 1067. Condition the adhesive in a standard a
38、tmosphere of (23 2) C and (50 5) % relative humidity for at least 24 h before making the test specimens, in accordance with ISO 554. 6.4 Datum points 6.4.1 Fixing of gauge positions Using the appropriate adhesive, fix the gauge studs in four positions, each being (25 1) mm from the outer edge of the
39、 covering (see Figure 3). 6.4.2 Edge to edge measurements Test specimens shall be marked at positions (25 1) mm from each edge. 6.5 Initial measurements of dimensions prior to bonding Measure the dimension of each test piece along the two datum lines LL and MM parallel to its grain, when this can be
40、 identified, (longitudinally) and the two datum lines PP and QQ at right angles to these lines (transversely). Record as measurement A. BS EN 1903:2015EN 1903:2015 (E) 8 Depending on the type of measuring device to be used, the measurements may be made from edge to edge or from scribe datum marks as
41、 described previously (see Figure 3). 6.6 Preparation of bonded test specimens 6.6.1 Cleaning Ensure that all floor coverings and fibre cement panels are clean and free from dust, loose particles or other contamination. NOTE For unbonded control test specimens, if required, test pieces are laid dire
42、ctly onto the fibre cement panels. 6.6.2 Application of adhesive Apply the adhesive (5.4) to the upper side of the substrate (5.6) using a notched trowel (5.1) held at an angle of approximately 60 to the slab, comb the adhesive to provide a uniform application. Hold the trowel at a right angle to on
43、e edge of the slab and draw it across the slab parallel to that edge in a straight line. When applying the adhesive, it is essential that the serrated blade is kept clean and free of adhesive build-up. Clean the blade regularly (no more than three fibre cement panels to be prepared without cleaning)
44、. In addition, regularly check the notch size and depth, especially where non-hardened steel blades are in use. 6.6.3 Bonding After a time recommended by the adhesive manufacturer (i.e. minimum open time in accordance with EN 923), place a test piece on the prepared panel ensuring that the machine d
45、irection of the test piece is at right angles to the adhesive ridges. Smooth with light hand pressure and then roll with a roller (5.2) starting at one edge rolling up and down and gradually moving across the panel ensuring all areas are rolled. Repeat the rolling in a direction at right angles to t
46、he first rolling. NOTE For coverings which show a tendency to curl after rolling, a dead load of (5,0 0,25) kg mass can be applied (3,0 0,5) h onto the test specimens. The load is spread evenly over the whole surface thus ensuring a contact over the total bonded area. 7 Procedure 7.1 Preconditioning
47、 Condition test specimens in a standard atmosphere of (23 2) C and (50 5) % relative humidity in accordance with ISO 554 for seven days. Measure all dimensions and record all results as measurement B. 7.2 Conditioning cycle (accelerated ageing) Store both unbonded and bonded test specimens at 50 C f
48、or 13 days in heating chamber (5.3), ensuring that the panels are horizontal and separated to allow good air circulation. Remove and post condition in a standard atmosphere for 24 h. Re-measure and record as measurement C1. 7.3 Subsequent cycles Repeat the cycle in 7.2 giving measurements C2, C3, et
49、c. At least two cycles shall be completed, but further cycles may be carried out if required. BS EN 1903:2015EN 1903:2015 (E) 9 8 Evaluation and expression of results For each datum line on each test piece measure the following dimensional changes: a) change during conditioning (B to A); b) change after one cycle (C1to A); c) change after further cycles (C2to A, C3to A, etc.). For both the unbonded control test specimens and the bonded test specimens, tabulate the dimensional changes, i.
