1、BS EN ISO 3248:2016Paints and varnishes Determination of the effect ofheat (ISO 3248:2016)BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN ISO 3248:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO 3248:2016.It supers
2、edes BS EN ISO 3248:2001 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee STI/10, Test methods for paints.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all th
3、e necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 84224 5ICS 87.040Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard w
4、as published under the authority of theStandards Policy and Strategy Committee on 31 August 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 3248 August 2016 ICS 87.040 Supersedes EN ISO 3248:2000English Version P
5、aints and varnishes - Determination of the effect of heat (ISO 3248:2016) Peintures et vernis - Dtermination des effets de la chaleur (ISO 3248:2016) Beschichtungsstoffe - Bestimmung der Auswirkung von Wrme (ISO 3248:2016) This European Standard was approved by CEN on 8 July 2016. CEN members are bo
6、und 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 to the
7、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 Centre
8、 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
9、 Luxembourg, Malta, Netherlands, 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 CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000
10、Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 3248:2016 EBS EN ISO 3248:2016EN ISO 3248:2016 (E) 3 European foreword This document (EN ISO 3248:2016) has been prepared by Technical Committee ISO/TC 35 “Paints an
11、d varnishes” in collaboration with Technical Committee CEN/TC 139 “Paints and varnishes” the secretariat of which is held by DIN. 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 February 2017, and
12、 conflicting national standards shall be withdrawn at the latest by February 2017. 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. Thi
13、s document supersedes EN ISO 3248:2000. 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, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yug
14、oslav 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 the United Kingdom. Endorsement notice The text of ISO 3248:2016 ha
15、s been approved by CEN as EN ISO 3248:2016 without any modification. BS EN ISO 3248:2016ISO 3248:2016(E)Foreword iv1 Scope . 12 Normative references 13 Principle 14 Limitations 15 Sampling 26 Test panels 26.1 Substrate 26.2 Preparation and coating 26.3 Drying and conditioning . 26.4 Thickness of coa
16、ting . 27 Procedure. 27.1 Temperature and duration of the test . 27.2 Determination . 28 Precision . 39 Test report . 3 ISO 2016 All rights reserved iiiContents PageBS EN ISO 3248:2016ISO 3248:2016(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of nation
17、al standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. Internatio
18、nal organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended
19、for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.
20、org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will b
21、e in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions
22、 related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.The committee responsible for this document is ISO/TC 35, Paints and varnishes
23、, Subcommittee SC 9, General test methods for paints and varnishes.This third edition cancels and replaces the second edition (ISO 3248:1998), which has been technically revised with the following changes:a) cooling down of the test panels after the test has been changed from standard temperature to
24、ambient temperature;b) a principle clause has been added;c) the normative references have been updated;d) the supplementary test conditions previously in Annex A have been integrated in the test report.iv ISO 2016 All rights reservedBS EN ISO 3248:2016INTERNATIONAL STANDARD ISO 3248:2016(E)Paints an
25、d varnishes Determination of the effect of heat1 ScopeThis International Standard specifies a method for determining the resistance of single coatings or multi-coat systems of paints, varnishes or related products to changes in gloss and/or colour, blistering, cracking and/or detachment from the sub
26、strate under conditions of a specified temperature.This procedure is applicable to products intended for use on domestic radiators or other articles likely to be subjected to similar temperatures.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this d
27、ocument and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 1513, Paints and varnishes Examination and preparation of test samplesISO 1514, Paints
28、 and varnishes Standard panels for testingISO 1518-1, Paints and varnishes Determination of scratch resistance Part 1: Constant-loading methodISO 1519, Paints and varnishes Bend test (cylindrical mandrel)ISO 1520, Paints and varnishes Cupping testISO 2808, Paints and varnishes Determination of film
29、thicknessISO 3270, Paints and varnishes and their raw materials Temperatures and humidities for conditioning and testingISO 6272-1, Paints and varnishes Rapid-deformation (impact resistance) tests Part 1: Falling-weight test, large-area indenterISO 15528, Paints, varnishes and raw materials for pain
30、ts and varnishes Sampling3 PrincipleThe panels are placed in an oven at a specified temperature for a specified time. At the end of the specified time, the panels are removed from the oven, cooled to ambient temperature and examined for change of colour or signs of other deterioration of the coating
31、, by comparison with identically prepared, but unheated, panels.When specified, both heated and unheated panels are subjected to tests for e.g. scratch resistance, bending with cylindrical mandrel, cupping, falling weight, or to other agreed test procedures and examined for compliance with a specifi
32、ed requirement.4 LimitationsTemperature and humidity are important parameters affecting test results. Deviations from the requirements specified can lead to results that are not comparable. However, the interested parties may agree upon alternative parameters and these parameters shall be reported.
33、ISO 2016 All rights reserved 1BS EN ISO 3248:2016ISO 3248:2016(E)5 SamplingTake a representative sample of the product to be tested (or of each product in case of a multi-coat system), as specified in ISO 15528.Examine and prepare the sample for testing, as specified in ISO 1513.6 Test panels6.1 Sub
34、strateThe test panel shall be of steel, tinplate, aluminium or glass as appropriate and shall comply with the requirements of ISO 1514. The dimensions of the panels shall be 150 mm 100 mm.6.2 Preparation and coatingPrepare each test panel in accordance with ISO 1514 and then coat it by the specified
35、 method with the product or system under test.6.3 Drying and conditioningDry (or stove) and age, if applicable, each coated test panel for the specified time and under the specified conditions. Before testing, condition the coated panels at (23 2) C and a relative humidity of (50 5) % (as specified
36、in ISO 3270), for a minimum period of 16 h. The test procedure shall then be carried out as soon as possible.6.4 Thickness of coatingDetermine the thickness, in micrometres, of the dried coating by one of the procedures specified in ISO 2808.7 Procedure7.1 Temperature and duration of the testCarry o
37、ut the test procedure at (125 2) C for a period of 24 h, unless otherwise agreed.7.2 DeterminationPlace the panels in an oven with air circulation at the specified temperature, not less than 100 mm from the sides of the oven and not closer than 20 mm apart, and maintain them at that temperature for
38、the specified time. The preferred method for ensuring even heating of the coated panels is to suspend them by means of fine wires. Alternatively, the panels may be supported in a rack made from sustainable heat-resistant material or placed, paint side uppermost, on a piece of heat-resistant board re
39、sting on supports.At the end of the specified time, remove the panels from the oven and allow them to cool to ambient temperature. Examine the panels for change of colour or signs of other deterioration of the coating, by comparison with identically prepared, but unheated, panels.When specified, sub
40、ject both heated and unheated panels, not less than 16 h after completing the heating period, to one of the test procedures specified in ISO 1518-1, ISO 1519, ISO 1520 or ISO 6272-1, or to other agreed test procedures, and examine for compliance with the specified requirement.2 ISO 2016 All rights r
41、eservedBS EN ISO 3248:2016ISO 3248:2016(E)8 PrecisionNo relevant precision data are currently available.9 Test reportThe test report shall contain at least the following information:a) all details necessary to identify the product(s) tested;b) a reference to this International Standard, i.e. ISO 324
42、8:2016;c) details of the preparation of the test panels, including the following:1) the material, the thickness and the surface preparation of the substrate (see 6.1);2) the method of application of the coating material to the substrate, including the duration andconditions of drying between coats i
43、n the case of a multi-coat system (see 6.2);3) the duration and conditions of drying (or stoving) and ageing (if applicable) of the coatingbefore testing (see 6.3);4) the thickness, in micrometres, of the dry coating and the method of measurement used inISO 2808, and whether it is a single coating o
44、r a multi-coat system (see 6.4);d) the properties of the test coating which are to be considered in evaluating the resistance of thecoating;e) the results of the test, in terms of the stated requirements;f) any deviation from the test method specified;g) any unusual features (anomalies) observed dur
45、ing the test;h) the date of the test. ISO 2016 All rights reserved 3This page deliberately left blankThis page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information and services.BSI is incorporated by Royal C
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