1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Plastics - Poly(vinyl chloride) (PVC) based profiles - Determination of the resistance to impact of profiles by falling massBS EN 477:2018National forewordThis British Standard is the UK implementation of EN 477:2018. I
2、t supersedes BS EN 477:1999, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee PRI/21, Testing of plastics.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all
3、the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 94816 9ICS 83.140.99; 91.060.50Compliance with a British Standard cannot confer immunity from legal obligations. Thi
4、s British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 February 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 477:2018EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 477January 2018ICS 83.080.20; 83.140
5、.99 Supersedes EN 477:1995EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2018 CEN Ref. No. EN 477:2018: EAll rights of exploitation in any form and by any means reserved worldwide for
6、CEN national MembersPlastics - Poly(vinyl chloride) (PVC) based profiles - Determination of the resistance to impact of profiles by falling massPlastiques - Profils base de poly(chlorure de vinyle) (PVC) - Dtermination de la rsistance aux chocs par masse tombante des profilsKunststoffe - Profile auf
7、 Basis von Polyvinylchlorid (PVC) - Bestimmung der Stofestigkeit von Profilen mittels FallbolzensThis European Standard was approved by CEN on 6 December 2017.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard th
8、e 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 Standard exists in three official versions (English, Frenc
9、h, 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 national standards bodies of Austria, Belgium, Bulgaria, C
10、roatia, 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, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, T
11、urkey and United Kingdom.English VersionEN 477:2018 (E)European foreword 31 Scope . 42 Normative references 43 Terms and definitions . 44 Principle 45 Apparatus . 46 Test specimens 47 Conditioning 68 Procedure. 69 Expression of results 610 Test report . 62Contents PageBS EN 477:2018EN 477:2018 (E)Eu
12、ropean forewordThis document (EN 477:2018) has been prepared by Technical Committee CEN/TC 249 “Plastics”, the secretariat of which is held by NBN.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 J
13、uly2018, and conflicting national standards shall be withdrawn at the latest by July 2018.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN not be held responsible for identifying any or all such patent rights.This document supe
14、rsedes EN 477:1995.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 Yugoslav Republic of Mac
15、edonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.3BS EN 477:2018EN 477:2018 (E)1 ScopeThis European Standard s
16、pecifies a method for determining the resistance to impact by a falling mass at 10 C of unplasticized poly(vinyl chloride) (PVC-U) profiles.It is also applicable to PVC-based profiles at specified temperatures/test conditions.2 Normative referencesThere are no normative references in this document.3
17、 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at http:/www.electropedia.org/ ISO Online browsing platform: available a
18、t http:/www.iso.org/obp3.1inner webpartition wall connecting two walls of a profile4 PrincipleTest specimens cut from lengths of profiles are subjected to a blow from a mass falling from a known height on the surface at a point mid-way between two inner webs at a fixed temperature.After testing the
19、profiles are examined visually for failures in the surface tested.5 ApparatusAn impact testing machine incorporating the following basic components (see Figure 1) shall be used:a) main frame, rigidly fixed in the vertical position;b) guide rails, fixed to the main frame to accommodate the falling ma
20、ss and allowing it to fall freely in the vertical plane;c) test specimen support, consisting of two rounded off supports (see Figure 2) (200 1) mm apart. The support shall be made from steel and rigidly fixed in a solid foundation or on a table with a mass of more than 50 kg;d) release mechanism, su
21、ch that the falling height of the mass, measured from the top surface of the test specimen to be tested, can be adjusted up to the falling height defined in the referred product standard with a tolerance of ( ) mm (e.g. 1 000 mm, 1 500 mm);e) falling mass, of (1 000 5) g, which has a hemispherical s
22、triking surface of (25 0,5) mm radius.The striking surface shall be free from all imperfections.6 Test specimensTen test specimens, each of length of 300 mm shall be taken from a profile.4 BS EN 477:2018EN 477:2018 (E)Key1 falling massFigure 1 Example of impact resistance testing apparatusDimensions
23、 in millimetresFigure 2 Example of a supporting device5BS EN 477:2018EN 477:2018 (E)7 ConditioningThe test specimens shall be conditioned at a temperature of ( ) C for at least 1 h before testing.Each test specimen shall be tested within 10 s of removal from the conditioning chamber.8 Procedure8.1 T
24、he test shall be performed on the surface of the profile, as defined by the referred standard.8.2 Drop the falling mass from the given height as required in the product standard at a point mid-way between two inner webs.Where it is impracticable for the mass to hit the profile in accordance to the a
25、bove due to its geometry other impact positions for the falling mass should be agreed upon between the profile manufacturer and the testing laboratory.When due to its geometry, the profile tend to tilt sideways at the impact of the falling mass, any tilting should be prevented, by attaching addition
26、al stays to the two supports.During the test care should be taken to prevent multiple impacts of the falling mass on the test specimen.9 Expression of resultsThe number of test specimens tested and the number of test specimens broken shall be reported for each type of profile.10 Test reportThe test
27、report shall include the following information:a) reference to this document (i.e. EN 477);b) the testing laboratory;c) full identification of the profile;d) date of testing;e) the height of the falling mass;f) the number of test specimens tested;g) the number of test specimens broken;h) all operati
28、ng details not specified in this document, as well as incidents likely to have influenced the results.6 BS EN 477:2018This page deliberately left blankThis page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, infor
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