1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 4160:2011Aerospace series Paints andvarnishes Determination ofthe effect of thermal exposureBS EN 4160:2011 BRITISH STANDARDNational forewordThis British Standard is the UK
2、 implementation of EN 4160:2011.The UK participation in its preparation was entrusted to TechnicalCommittee ACE/65, Non-metallic materials for aerospace purposes(excluding textiles).A list of organizations represented on this committee can beobtained on request to its secretary.This publication does
3、 not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 73882 1ICS 49.040Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theS
4、tandards Policy and Strategy Committee on 31 May 2011.Amendments issued since publicationDate Text affectedBS EN 4160:2011EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 4160 May 2011 ICS 49.040 English Version Aerospace series - Paints and varnishes - Determination of the effect of thermal exp
5、osure Srie arospatiale - Peintures et vernis - Dtermination de leffet thermique Luft- und Raumfahrt - Beschichtungsstoffe - Thermische Beanspruchung This European Standard was approved by CEN on 3 March 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate t
6、he 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 European Standar
7、d 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 the nation
8、al 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, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerla
9、nd and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4
10、160:2011: EBS EN 4160:2011EN 4160:2011 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Terms and definitions .44 Principle 45 Apparatus .56 Specimens 57 Procedure .58 Supplementary information 69 Test report 610 Designation 6BS EN 4160:2011EN 4160:2011 (E) 3 Foreword This document (
11、EN 4160:2011) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Se
12、rvices of the member countries of ASD, prior to its presentation to CEN. 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 November 2011, and conflicting national standards shall be withdrawn at the
13、 latest by November 2011. 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. According to the CEN/CENELEC Internal Regulations, the natio
14、nal standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands,
15、Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 4160:2011EN 4160:2011 (E) 4 1 Scope This European Standard specifies the method of test for determining the resistance of paints and varnishes to the effects of heat or cold within the lim
16、its of 50 C to 200 C. The test procedure assesses the resistance of paint coatings, varnishes or related products to changes of gloss, colour, blistering, cracking and/or detachment from the substrate as a result of exposure to elevated or sub-ambient temperature. The procedure is applicable to prod
17、ucts intended for use in aerospace applications. 2 Normative references The following 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 an
18、y amendments) applies. EN 2744, Aerospace series Non metallic materials Preferred test temperatures EN 23270, Paints, varnishes and their raw material Temperatures and humidities for conditioning and testing (ISO 3270:1984) EN ISO 1513, Paints and varnishes Examination and preparation of test sample
19、s (ISO 1513:2010) EN ISO 2808, Paints and varnishes Determination of film thickness (ISO 2808:2007) EN ISO 2813, Paints and varnishes Determination of specular gloss of non-metallic paint films at 20, 60 and 85 (ISO 2813:1994, including Technical Corrigendum 1:1997) EN ISO 4628-2, Paints and varnish
20、es Evaluation of degradation of paint coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 2: Assessment of degree of blistering (ISO 4628-2:2003) EN ISO 4628-4, Paints and varnishes Evaluation of degradation of paint coatings Designation of qu
21、antity and size of defects, and of intensity of uniform changes in appearance Part 4: Assessment of degree of cracking (ISO 4628-4:2003) EN ISO 4628-6, Paints and varnishes Evaluation of degradation of paint coatings Designation of quantity and size of defects, and of intensity of uniform changes in
22、 appearance Part 6: Assessment of degree of chalking by tape method (ISO 4628-6:2007) EN ISO 15528, Paints, varnishes and raw materials for paints and varnishes Sampling (ISO 15528:2000) ISO 7724 (all parts), Paints and varnishes Colorimetry 3 Terms and definitions Not applicable. 4 Principle Specim
23、ens comprising of coated test panels are exposed to a specified thermal environment, either elevated or sub-ambient, for a specified period. BS EN 4160:2011EN 4160:2011 (E) 5 Changes in appearance, mechanical or physical properties are then determined. 5 Apparatus An air circulating temperature cont
24、rolled chamber capable of maintaining the test specimens within the tolerance limits specified in EN 2744 for the test temperature specified. 6 Specimens Take a representative sample of the product to be tested or of each component in the case of a multi-coat system as described in EN ISO 15528. Exa
25、mine and prepare each sample for testing as described in EN ISO 1513. The test panels shall be of a size suitable for the performance of the tests identified by this and the product standard. Coat the test panels with the test product as specified by the product standard. Dry/cure the coating for th
26、e time and under the conditions specified in the product standard. The coating thickness, when determined using one of the non destructive procedures specified in EN ISO 2808 shall comply with the requirements of the product standard. Condition at the standard temperature and humidity defined in EN
27、23270 for a minimum of 16 h and a maximum of 72 h prior to testing. 7 Procedure Expose the panel for the time and temperature stated in the product standard. Where a continuous performance temperature range is quoted in the standard then the upper and lower limits of the temperature range shall be t
28、ested. Exposure shall be achieved by placing the test panels in the chamber set at the desired test temperature. Panels shall be placed not less than 100 mm from the sides of the chamber and not closer than 20 mm apart. NOTE The preferred method of maintaining even heating of the test panels is to s
29、uspend them by means of fine wire, alternatively, the panels may be supported in a rack made from suitable, heat resistant material which will not damage the coating. After the completion of the required exposure period, remove the test panels from the chamber. Condition at the standard temperature
30、and humidity defined in EN 23270 for a period of 16 h. Examine the coating for change of gloss, colour or other signs of deterioration when compared with identically prepared but unexposed (reference) panels in accordance with EN ISO 2813, ISO 7724 (all parts), EN ISO 4628-2, EN ISO 4628-4 and EN IS
31、O 4628-6. Subject the test panels and reference panels to any additional paint performance tests specified in the product standard either immediately following thermal exposure or after the conditioning period, dependant upon the requirements of the performance test. Examine for compliance with the
32、requirements of the product standard. BS EN 4160:2011EN 4160:2011 (E) 6 8 Supplementary information In the performance of this test standard there is a requirement for supplementary information to be provided by the product standard for the material under test. This information consists of: a) subst
33、rate type and method of preparation; b) method of application of the coating including, where applicable, the duration and conditions of drying/curing between coats in the case of multi-coat systems; c) duration and conditions of drying/curing of the final coat before test; d) thickness of the dry c
34、oating or combination of coatings in micrometres; e) properties of the coating to be evaluated following exposure. 9 Test report The test report shall contain at least the following information: a) all details necessary to identify the product tested; b) reference to this test standard; c) reference
35、 to the product standard; d) items of supplementary information (clause 8); e) results of the test work in terms of the stated requirements; f) any deviation from the test method specified; g) date(s) of the test. 10 Designation EXAMPLE Description blockDETERMINATION OF THE EFFECT OF THERMAL EXPOSUR
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