1、December 2016 English price group 11No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 87.040!%Ux“2595085www.din.deDIN
2、 EN ISO 7784-1Paints and varnishes Determination of resistance to abrasion Part 1: Method with abrasivepaper covered wheels and rotating test specimen (ISO 77841:2016);English version EN ISO 77841:2016,English translation of DIN EN ISO 7784-1:2016-12Beschichtungsstoffe Bestimmung des Abriebwiderstan
3、des Teil 1: Verfahren mit schleifpapierbelegten Rdern und rotierender Probe (ISO 77841:2016);Englische Fassung EN ISO 77841:2016,Englische bersetzung von DIN EN ISO 7784-1:2016-12Peintures et vernis Dtermination de la rsistance labrasion Partie 1: Mthode utilisant des roues revtues de papier abrasif
4、 et une prouvette rotative (ISO 77841:2016);Version anglaise EN ISO 77841:2016,Traduction anglaise de DIN EN ISO 7784-1:2016-12SupersedesDIN EN ISO 77841:200607www.beuth.deDocument comprises 16 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered
5、 authoritative.11.16 DIN EN ISO 7784-1:2016-12 2 A comma is used as the decimal marker. National foreword This document (EN ISO 7784-1:2016) has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes”, Subcommittee SC 9 “General test methods for paints and varnishes” (Secretariat: BSI,
6、 United Kingdom) in collaboration with Technical Committee CEN/TC 139 “Paints and varnishes” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was DIN-Normenausschuss Beschichtungsstoffe und Beschichtungen (DIN Standards Committee Coatings and Coating Materials), W
7、orking Committee NA 002-00-07 AA Allgemeine Prfverfahren fr Beschichtungsstoffe und Beschichtungen. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 1514 DIN EN ISO 1514 ISO 2808 DIN EN ISO 2808 ISO 3270 DIN EN 23270 ISO 4618 DIN EN ISO
8、4618 ISO 7619-1 DIN ISO 7619-1 ISO 7619-2 DIN ISO 7619-2 DIN EN ISO 7784 consists of the following parts, under the general title Paints and varnishes Determination of resistance to abrasion: Part 1: Method with abrasive-paper covered wheels and rotating test specimen Part 2: Method with abrasive ru
9、bber wheels and rotating test specimen Part 3: Method with abrasive-paper covered wheel and linearly reciprocating test specimen Amendments This standard differs from DIN EN ISO 7784-1:2006-07 as follows: a) the title of the standard has been modified; b) Clause 3 “Terms and definitions has been inc
10、luded; c) a figure illustrating the principle of the method has been included; d) the required supplementary information included in the former Annex A has been integrated in the test report; e) the calibration of the apparatus included in the former Annex B has been deleted; f) the test procedure h
11、as been re-arranged; g) the text has been editorially revised and normative references have been updated. Previous editions DIN EN ISO 7784-1: 2006-07 DIN EN ISO 7784-1:2016-12 3 National Annex NA (informative) Bibliography DIN EN 23270, Paints, varnishes and their raw materials Temperatures and hum
12、idities for conditioning and testing DIN EN ISO 1514, Paints and varnishes Standard panels for testing DIN EN ISO 2808, Paints and varnishes Determination of film thickness DIN EN ISO 4618, Paints and varnishes Terms and definitions DIN ISO 7619-1, Rubber, vulcanized or thermoplastic Determination o
13、f indentation hardness Part 1: Durometer method (Shore hardness) DIN ISO 7619-2, Rubber, vulcanized or thermoplastic Determination of indentation hardness Part 2: IRHD pocket meter method DIN EN ISO 7784-1:2016-12 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM E
14、N ISO 7784-1 April 2016 ICS 87.040 Supersedes EN ISO 7784-1:2006English Version Paints and varnishes - Determination of resistance to abrasion - Part 1: Method with abrasive-paper covered wheels and rotating test specimen (ISO 7784-1:2016) Peintures et vernis - Dtermination de la rsistance labrasion
15、 - Partie 1: Mthode utilisant des roues revtues de papier abrasif et une prouvette rotative (ISO 7784-1:2016) Beschichtungsstoffe - Bestimmung des Abriebwiderstandes - Teil 1: Verfahren mit schleifpapierbelegten Rdern und rotierender Probe (ISO 7784-1:2016) This European Standard was approved by CEN
16、 on 27 February 2016. 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-date lists and bibliographical references concerning such national standard
17、s 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 translation under the responsibility of a CEN member into its own language and notif
18、ied 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Ice
19、land, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Manag
20、ement Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 7784-1:2016 EForeword .4Introduction 51 Scope . 62 Normative references 63 Terms and definitions . 64 Principle 75 Apparatus a
21、nd materials 76 Test specimens 96.1 Preparation of the test specimens 96.2 Film thickness 96.3 Conditioning 97 Procedure. 97.1 Agreements 97.2 Preparation of the abrasive wheels 107.3 Test conditions . 107.4 Number of determinations 107.5 Test procedure 108 Evaluation .119 Precision 1110 Test report
22、 11Bibliography .12Contents PageEN ISO 7784-1:2016 (E) DIN EN ISO 7784-1:2016-12 2European foreword .3European foreword This document (EN ISO 7784-1:2016) has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes“ in collaboration with Technical Committee CEN/TC 139 “Paints and varnis
23、hes” 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 October 2016, and conflicting national standards shall be withdrawn at the latest by October 2016. Att
24、ention 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. This document supersedes EN ISO 7784-1:2006. According to the CEN-CENELEC Internal Regula
25、tions, 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, Ita
26、ly, 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 7784-1:2016 has been approved by CEN as EN ISO 7784-1:2016 without any modification. EN ISO 7784
27、-1:2016 (E) DIN EN ISO 7784-1:2016-12 3 ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member bod
28、y interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrote
29、chnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended 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
30、 documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.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 resp
31、onsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be 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
32、 for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following
33、URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 35, Paints and varnishes, Subcommittee SC 9, General test methods for paints and varnishes.This second edition cancels and replaces the first edition (ISO 7784-1:1997), which has been technically revised w
34、ith the following changes:a) the title has been changed;b) the terms and definitions clause has been amended;c) a figure explaining the principle of the method was amended;d) the supplementary test conditions previously in Annex A have been integrated in the test report;e) the calibration of the app
35、aratus previously in Annex B has been deleted;f) the test procedure has been re-arranged;g) the text has been editorially revised and the normative references have been updated.ISO 7784 consists of the following parts, under the general title Paints and varnishes Determination of resistance to abras
36、ion: Part 1: Method with abrasive-paper covered wheels and rotating test specimen Part 2: Method with abrasive rubber wheels and rotating test specimen Part 3: Method with abrasive-paper covered wheel and linearly reciprocating test specimenEN ISO 7784-1:2016 (E) DIN EN ISO 7784-1:2016-12 4 Introduc
37、tionThis part of ISO 7784 is one of the three parts of ISO 7784 dealing with test methods for the determination of the resistance to abrasion of coatings using abrasive wheels. The characteristics and differences of these methods are summarized in Table 1.Table 1 Types of methodStandardAbrasive whee
38、lTest specimen movementType Degree of freedomISO 7784-1Abrasive paper on rubber wheelFreely rotatable RotationISO 7784-2 Abrasive rubber wheelISO 7784-3Abrasive paper on metal wheelRigid with stroke-dependent rotationaLinear reciprocationaA mechanism rotates the abrasive wheel by a small angle after
39、 each double stroke so that a new area of the abrasive paper is effective.The methods using abrasive-paper covered wheels (ISO 7784-1 and ISO 7784-3) are preferably to be applied.EN ISO 7784-1:2016 (E) DIN EN ISO 7784-1:2016-12 5 1 ScopeThis part of ISO 7784 specifies a method for determining the re
40、sistance to abrasion of coatings, for which two loaded, freely rotatable but eccentrically arranged abrasive-paper covered wheels affect the coating of the rotating test specimens.2 Normative referencesThe following referenced documents, in whole or in part, are normatively referenced in this docume
41、nt 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 1514, Paints and varnishes Standard panels for testingISO 2808, Paints and varnishes Determ
42、ination of film thicknessISO 3270, Paints and varnishes and their raw materials Temperatures and humidities for conditioning and testingISO 4618, Paints and varnishes Terms and definitionsISO 7619-1, Rubber, vulcanized or thermoplastic Determination of indentation hardness Part 1: Durometer method (
43、Shore hardness)ISO 7619-2, Rubber, vulcanized or thermoplastic Determination of indentation hardness Part 2: IRHD pocket meter methodFEPA-Standard 43-1, Grains of fused aluminium oxide, silicon carbide and other abrasive materials for coated abrasives Macrogrits P 12 to P 2201)FEPA-Standard 43-2, Gr
44、ains of fused aluminium oxide, silicon carbide and other abrasive materials for coated abrasives Microgrits P 240 to P 25001)3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 4618 and the following apply.3.1test specimenspecimen on which the test is to
45、be carried out3.2abrasive wearwear, occurring due to laminar removal of coating material on the surface1) FEPA: Federation of European Producers of Abrasives.EN ISO 7784-1:2016 (E) DIN EN ISO 7784-1:2016-12 6 4 PrincipleTwo pivot-mounted rubber wheels, covered with agreed abrasive paper, are pressed
46、 onto the coating of the rotating test specimen applying the agreed test load. The eccentric arrangement of the axes of the abrasive wheels relative to the axis of rotation causes a crosswise abrasive wear in a ring-shaped zone. The loss of mass of the coating caused by abrasive wear after the agree
47、d number of cycles is determined.Figure 1 illustrates the test principle.Key1 turntable2 test specimen3 wear zone4 abrasive wheelsFigure 1 Principle of the abrasion test with rotating test specimen5 Apparatus and materials5.1 Turntable abrasion tester, as exemplified in Figure 2, with the following
48、properties.5.1.1 The rotational speed of the turntable onto which the test specimen is fixed shall be (60 2) min1. The number of cycles is pre-set on an operation counter.5.1.2 Two arms are attached to the device, each with a mandrel, onto which the abrasive wheels (5.2) and, if necessary, the weights (5.3) are attached. Ball bearings are used for the mandrels for the abrasive wheels so they
