EN ISO 8130-7-2010 en Coating powders - Part 7 Determination of loss of mass on stoving《粉末涂料 第7部分 烘烤时质量损失的测定》.pdf

1、BRITISH STANDARDBS EN ISO8130-7:2010Coating powders Part 7: Determination of loss of mass on stoving (ISO 8130-7:1992) ICS 87.040Incorporating corrigendum April 2011National forewordThis British Standard is the UK implementation of EN ISO 8130-7:2010. It is identical to ISO 8130-7:1992. It supersede

2、s BS 3900-J5:1993 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee STI/10, Test methods for paints.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the nec

3、essary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.BS EN ISO 8130-7:2010This British Standard, having been prepared under the direction of the Pigments, Paints and Varnishes Standards Pol

4、icy Committee, was published under the authority of the Standards Board and comes into effect on 15 April 1993 BSI 2011First published May 1988Second edition April 1993The following BSI references relate to the work on this standard: Committee reference PVC/10 Draft for comment 88/54512 DCAmendments

5、/corrigenda issued since publicationDate Comments 30 April 2011 This corigendum renumbers BS 390-J5:193 as BS EN ISO 8130-7:2010ISBN 978 0 580 72115 1EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8130-7 November 2010 ICS 87.040 English Version Coating powders - Part 7: Determination of lo

6、ss of mass on stoving (ISO 8130-7:1992) Poudres pour revtement - Partie 7: Dtermination de la perte de masse la cuisson (ISO 8130-7:1992) Pulverlacke - Teil 7: Bestimmung des Einbrennverlustes (ISO 8130-7:1992) This European Standard was approved by CEN on 16 October 2010. CEN members are bound to c

7、omply 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 CEN Mana

8、gement 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 Management Centre has the same status as

9、the official versions. CEN members are the national 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, Roma

10、nia, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved

11、worldwide for CEN national Members. Ref. No. EN ISO 8130-7:2010: EForeword The text of ISO 8130-7:1992 has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 8130-7:2010 by Technical Comm

12、ittee 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 May 2011, and conflicting national standards shall be withdrawn at

13、the latest by May 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 nationa

14、l 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, No

15、rway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 8130-7:1992 has been approved by CEN as a EN ISO 8130-7:2010 without any modification. BS EN ISO 8130-7:2010EN ISO 8130-7:2010 (E) BSI 2011 11 ScopeThis part of

16、ISO 8130 specifies a method for the determination of loss of mass on stoving of coating powders that are to be applied by electrostatic spraying on to a substrate.NOTE 1The method described in this part of ISO 8130 is a simple, practical test which provides sufficiently accurate results with coating

17、 powders that lose up to about 2 % (m/m) on stoving. Above this, accuracy decreases with increasing loss in mass.NOTE 2Any water present in the product under test is included in the test result.2 Normative referenceThe following standard contains provisions which, through reference in this text, con

18、stitute provisions of this part of ISO 8130. At the time of publication, the edition indicated was valid. All standards are subject to revision, and parties to agreements based on this part of ISO 8130 are encouraged to investigate the possibility of applying the most recent edition of the standard

19、indicated below. Members of IEC and ISO maintain registers of currently valid International Standards.ISO 842:1984, Raw materials for paints and varnishes Sampling. 3 Required supplementary informationFor any particular application, the test method specified in this part of ISO 8130 needs to be comp

20、leted by supplementary information. The items of supplementary information are given in Annex A.4 ApparatusOrdinary laboratory apparatus, together with the following:4.1 Flat-bottomed dish, of tinplate or aluminium, approximately 75 mm in diameter.The dimensions of the dish are not critical, but the

21、 base shall be flat to ensure good thermal contact and to permit the test portion of the coating powder to be spread to a thin, even layer (the thickness of powder can have a significant influence on the test result).4.2 Air-circulation oven, capable of maintaining temperatures up to 250C. The type

22、of oven shall be stated in the test report, as the design of the oven can influence the test result.4.3 Analytical balance, capable of weighing to0,1mg.4.4 Desiccator, containing a desiccant such as dried silica gel impregnated with cobalt chloride.5 SamplingTake a representative sample of the produ

23、ct to be tested, as described in ISO 842.6 ProcedureCarry out the determination in duplicate.6.1 Test portionDry the dish (4.1) in the oven (4.2) at the specified or agreed test temperature (see Annex A) for 15 min and allow it to cool to room temperature in the desiccator (4.4). Weigh the dish to t

24、he nearest0,1mg. Then weigh into the dish, to same accuracy, a test portion of (0,5 0,05) g (m0). By gentle movement of the dish, holding the dish with tweezers, spread the test portion evenly over the bottom of the dish.NOTE 3A test portion of 0,5 g in a dish of 75 mm diameter gives a layer with a

25、thickness of about 60 4m.6.2 DeterminationCarry out the stoving at the temperature and for the time specified or agreed (see Annex A).Place the dish with the test portion (6.1) in the oven(4.2), previously adjusted to the appropriate temperature, and leave it for the specified or agreed period. In o

26、rder to aid rapid heat transfer, place the dish on a metal plate, at oven temperature, in the oven.NOTE 4There is a possibility that, with forced air circulation, oven powder will be displaced by the fan of the oven prior to melting. It is therefore recommended that the fan be switched off for a sho

27、rt time at the beginning of the determination.When the appropriate period of heating is completed, transfer the dish to a desiccator and allow it to cool to room temperature. Weigh the dish and stoved test portion to the nearest 0,1 mg and determine the mass of the stoved material (m1).7 Expression

28、of resultsCalculate the loss of mass on stoving, L, expressed as percentage by mass, using the equationwhereIf the results of the duplicate determinations differ by more than 0,2 % (absolute), repeat the procedure described in clause 6.Calculate the mean of two valid determinations and report the re

29、sult to the nearest 0,01 % (m/m)m0 is the mass, in grams, of the test portion before stoving;m1 is the mass, in grams, of the test portion after stoving.L m0 m1m0- 100=BS EN ISO 8130-7:2010EN ISO 8130-7:2010 (E)2 BSI 20118 PrecisionNo precision data are at present available.9 Test reportThe test rep

30、ort shall contain at least the following information:a) all details necessary to identify the product tested;b) a reference to this part of ISO 8130 (ISO 8130-7);c) the items of supplementary information referred to in Annex A;d) the type of oven used;e) the result of the test (individual values and

31、 mean value);f) any deviation from the test method specified;g) the date of the test.BS EN ISO 8130-7:2010EN ISO 8130-7:2010 (E) BSI 2011 3Annex A (normative) Required supplementary informationThe items of supplementary information listed in this annex shall be supplied as appropriate to enable the

32、method to be carried out.The information required should perferably be agreed between the interested parties and may be derived, in part or totally, from an international or national standard or other document related to the product under test.a) Temperature of stoving.b) Period of stoving.BS EN ISO

33、 8130-7:2010EN ISO 8130-7:2010 (E)4 blank BSI 2011List of referencesSee national foreword.BS EN ISO 8130-7:2010EN ISO 8130-7:2010 (E)BSI GroupHeadquarters 389 Chiswick High Road, London, W4 4AL, UK Tel +44 (0)20 8996 9001 Fax +44 (0)20 8996 7001 standardsBSI - British Standards InstitutionBSI is th

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