1、BRITISH STANDARDBS EN ISO8130-3:2010Coating powders Part 3: Determination of density by liquid displacement pyknometer ICS 87.040National forewordThis British Standard is the UK implementation of EN ISO 8130-3:2010. It is identical to ISO 8130-3:1992. It supersedes BS 3900 J7:1993, which is withdraw
2、n.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 necessary provisions of a contract. Us
3、ers of British Standards are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.BS EN ISO 8130-3:2010This British Standard, having been prepared under the direction of the Pigments, Paints and Varnishes Standards Policy Committee,
4、 was published under the authority of the Standards Board and coms into effect on 15 April 1993 BSI 2011The following BSI references relate to the work on this standard: Committee reference PVC/10 Draft for comment 87/54851 DCAmendments/corrigenda issued since publicationDate Comments 28 February 20
5、11 This corrigendum renumbers BS 3900-J7:1993 as BS EN ISO 8130-3:2010ISBN 978 0 580 22111 3-EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8130-3 November 2010 ICS 87.040 English Version Coating powders - Part 3: Determination of density by liquid displacement pyknometer (ISO 8130-3:1992)
6、 Poudres pour revtement - Partie 3: Dtermination de la masse volumique laide dun pycnomtre dplacement de liquide (ISO 8130-3:1992) Pulverlacke - Teil 3: Bestimmung der Dichte mit einem Pyknometer durch Flssigkeitsverdrngung (ISO 8130-3:1992) This European Standard was approved by CEN on 16 October 2
7、010. 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 standards may be obtained
8、 on application to the CEN 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 Management
9、 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands,
10、 Norway, Poland, Portugal, Romania, 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
11、form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 8130-3:2010: EForeword The text of ISO 8130-3:1992 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 IS
12、O 8130-3:2010 by 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 May 2011, and conflicting national s
13、tandards shall be withdrawn at 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 In
14、ternal 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Lux
15、embourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 8130-3:1992 has been approved by CEN as a EN ISO 8130-3:2010 without any modification. BS EN ISO8130-3:2010EN ISO8130-3:2010 (E) B
16、SI 2011 iiiContentsPageCommittees responsible Inside front coverNational foreword ii1 Scope 12 Normative references 13 Principle 14 Materials 15 Apparatus 16 Sampling 17 Procedure 18 Expression of results 29 Test report 2List of references Inside back coverBS EN ISO8130-3:2010EN ISO 8130-3:2010 (E)T
17、his page deliberately set blank BSI 2011 11 ScopeThis part of ISO 8130 specifies a liquid displacement pyknometer method for the determination of the density of coating powders. The method is based on a determination of the mass and the volume of a test portion.The apparatus specified is relatively
18、inexpensive, but the liquid displacement pyknometer method is liable to give erroneous results, particularly if the powder swells in contact with the displacement liquid used or the displacement liquid does not totally displace the air between the powder particles. The liquid displacement method is
19、much slower in execution and less accurate than the gas comparison pyknometer method specified in ISO 8130-2 and is only to be used if it can be shown that the same results will be obtained as for the gas comparison pyknometer method.2 Normative referencesThe following standards contain provisions w
20、hich, through reference in this text, constitute provisions of this part of ISO 8130. At the time of publication, the editions indicated were 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 applyi
21、ng the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards.ISO 787-10:1981, General methods of test for pigments and extenders Part 10: Determination of density Pyknometer method. ISO 842:1984, Raw materials for
22、paints and varnishes Sampling. ISO 3696:1987, Water for analytical laboratory use Specification and test methods. ISO 8130-2:1992, Coating powders Part 2: Determination of density by gas comparison pyknometer (referee method). 3 PrincipleThe density of the coating powder is determined in a liquid di
23、splacement pyknometer in accordance with ISO 787-10, using a liquid that completely wets the product under test without swelling or dissolving it.4 Materials4.1 Water, of at least grade 3 purity as defined in ISO 3696, freshly boiled and cooled.4.2 Displacement liquid: any suitable aliphatic hydroca
24、rbon or mixture of aliphatic hydrocarbons, free from aromatic compounds, with a boiling point within the range 80 C to 140 C.n-Heptane has been found to be suitable in many instances for the determination of the density of thermosetting coating powders. However, if there is an interaction between n-
25、heptane and the product under test or its components, a suitable alternative liquid shall be used.4.3 Acetone, analytical grade.5 Apparatus5.1 Pyknometer, complying with ISO 787-10.5.2 Vacuum pump, with rubber pressure tube attachment.5.3 Balance, capacity 200 g, capable of weighing to 1 mg or less.
26、6 SamplingTake a representative sample of the product to be tested, as described in ISO 842.7 ProcedureCarry out the determination in duplicate at (23 0,5) C. Weigh to the nearest 1 mg.7.1 Determination of the density of the displacement liquidWeigh the empty clean pyknometer (5.1), fill it to the m
27、ark with the displacement liquid (4.2) and reweigh. Empty the pyknometer, wash it with three separate portions of acetone (4.3) and dry it under vacuum. Refill the pyknometer with water (4.1) and reweigh.Calculate the density 1, in grams per millilitre, of the displacement liquid at 23 C, using the
28、equationwherem0is the mass, in grams, of the empty pyknometer;m1is the mass, in grams, of the pyknometer containing the displacement liquid;m2is the mass, in grams, of the pyknometer containing water;0is the density, in grams per millilitre, of the water. (For the purposes of this part of ISO 8130,
29、take the density of water at 23 C as 0,998 g/ml.)1m1m0m2m0- - - - - - - - - - - - - - - - - - - - - - - - 0=BS EN ISO8130-3:2010EN ISO 8130-3:2010 (E)2 BSI 20117.2 Determination of the density of the coating powderEmpty the pyknometer, wash it with three separate portions of acetone and dry it under
30、 vacuum. Introduce a test portion of the sample of between 3 g and 4 g into the pyknometer and reweigh. Add sufficient displacement liquid to wet the test portion and just cover it. Attach the opening of the pyknometer to the pressure tube connected to the vacuum pump (5.2). Reduce the pressure in t
31、he pyknometer to a maximum of 1,2 kPa1)and shake until there is no further emission of air from the powder/liquid mixture. Carefully allow the pressure in the pyknometer to rise to atmospheric pressure. Then fill the pyknometer to the mark with displacement liquid, taking care not to disturb the sed
32、imented powder. Take care also on filling in order to avoid powder remaining in the neck of the pyknometer. Reweigh the filled pyknometer.8 Expression of results8.1 CalculationCalculate the density p, in grams per millilitre, of the coating powder at 23 C, using the equation:whereIf the two determin
33、ations differ by more than 0,04 g/ml, repeat the determination (7.2).Calculate the mean of two valid determinations and report the result to the nearest 0,01 g/ml.8.2 PrecisionOnly limited precision data are currently available. As a rule, a reproducibility of 0,05 g/ml can be expected.9 Test report
34、The test report 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 8130-3);c) the type of pyknometer and the displacement liquid used;d) the result of the test (individual values and mean value);e) any
35、 deviation from the test method specified;f) the date of the test.1) 100 kPa = 1 barm0is the mass, in grams, of the empty pyknometer;m1is the mass, in grams, of the pyknometer containing the displacement liquid;m3is the mass, in grams, of the pyknometer containing the test portion;m4is the mass, in
36、grams, of the pyknometer containing the test portion and the displacement liquid;1is the density, in grams per millilitre, of the displacement liquid at 23 C.pm3m0m1m0()m4m3- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
37、 - 1=BS EN ISO8130-3:2010EN ISO 8130-3:2010 (E) BSI 2011List of referencesSee national foreword.BS EN ISO8130-3:2010EN ISO 8130-3:2010 (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
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