1、February 2010DEUTSCHE NORM English price group 9No part of this standard 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 87.060.10!$8c“1572164w
2、ww.din.deDDIN EN ISO 787-7General methods of test for pigments and extenders Part 7: Determination of residue on sieve - Water method - Manualprocedure (ISO 787-7:2009)English version of DIN EN ISO 787-7:2010-02Allgemeine Prfverfahren fr Pigmente und Fllstoffe Teil 7: Bestimmung des Siebrckstandes -
3、 Wasserverfahren - Handsplverfahren(ISO 787-7:2009)Englische Fassung DIN EN ISO 787-7:2010-02SupersedesDIN 53195:1990-09www.beuth.deDocument comprises 12 pages02.10 DIN EN ISO 787-7:2010-02 2 National foreword This standard has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes” in
4、 collaboration with Technical Committee CEN/TC 298 “Pigments and extenders” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Pigmente und Fllstoffe (Pigments and Extenders Standards Committee), Working Committee NA 078-00-10 AA Prfverfahren
5、 und Kennwerte fr Pigmente. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 565 DIN ISO 565 ISO 787-2 DIN EN ISO 787-2 ISO 787-3 DIN EN ISO 787-3 ISO 787-5 DIN EN ISO 787-5 ISO 787-8 DIN EN ISO 787-8 ISO 787-9 DIN EN ISO 787-9 ISO 787-1
6、0 DIN EN ISO 787-10 ISO 787-11 DIN EN ISO 787-11 ISO 787-13 DIN EN ISO 787-13 ISO 787-14 DIN EN ISO 787-14 ISO 787-15 DIN EN ISO 787-15 ISO 787-16 DIN EN ISO 787-16 ISO 787-18 DIN EN ISO 787-18 ISO 787-19 DIN EN ISO 787-19 ISO 787-23 DIN EN ISO 787-23 ISO 787-24 DIN EN ISO 787-24 ISO 787-25 DIN EN I
7、SO 787-25 ISO 3262-9:1997 DIN EN ISO 3262-9:1998-08 ISO 15528 DIN EN ISO 15528 Amendments This standard differs from DIN 53195:1990-09 as follows: a) Clause 4 “Apparatus” has been revised. b) Subclause 5.4 “Determination” has been modified. c) Normative references have been updated. d) The standard
8、has been brought in line with the current rules of presentation. Previous editions DIN 53195: 1960-12, 1976-12, 1990-09 DIN EN ISO 787-7:2010-02 3 National Annex NA (informative) Bibliography DIN ISO 565, Test sieves Metal wire cloth, perforated metal plate and electroformed sheet Nominal sizes of o
9、penings DIN EN ISO 787-2, General methods of test for pigments and extenders Part 2: Determination of matter volatile at 105 C DIN EN ISO 787-3, General methods of test for pigments and extenders Part 3: Determination of matter soluble in water Hot extraction method DIN EN ISO 787-5, General methods
10、 of test for pigments and extenders Part 5: Determination of oil absorption value DIN EN ISO 787-8, General methods of test for pigments and extenders Part 8: Determination of matter soluble in water Cold extraction method DIN EN ISO 787-9, General methods of test for pigments and extenders Part 9:
11、Determination of pH value of an aqueous suspension DIN EN ISO 787-10, General methods of test for pigments and extenders Part 10: Determination of density DIN EN ISO 787-11, General methods of test for pigments and extenders Part 11: Determination of tamped volume and apparent density after tamping
12、DIN EN ISO 787-13, General methods of test for pigments and extenders Part 13: Determination of water-soluble sulphates, chlorides and nitrates DIN EN ISO 787-14, General methods of test for pigments and extenders Part 14: Determination of resistivity of aqueous extract DIN EN ISO 787-15, General me
13、thods of test for pigments and extenders Part 15: Comparison of resistance to light of coloured pigments of similar types DIN EN ISO 787-16, General methods of test for pigments and extenders Part 16: Determination of relative tinting strength (or equivalent colouring value) and colour on reduction
14、of coloured pigmentscomparison method DIN EN ISO 787-18, General methods of test for pigments and extenders Part 18: Determination of residue on sieve DIN EN ISO 787-19, General methods of test for pigments and extenders Part 19: Determination of water-soluble nitrates (salicylic acid method) DIN EN
15、 ISO 787-23, General methods of test for pigments and extenders Part 23: Determination of density (using a centrifuge to remove entrained air) DIN EN ISO 787-24, General methods of test for pigments and extenders Part 24: Determination of relative tinting strength of coloured pigments and relative s
16、cattering power of white pigments Photometric Pyknometer method VisualMechanical flushing procedure Methods DIN EN ISO 787-7:2010-02 4 DIN EN ISO 3262-9:1998-08, Extenders for paints Specifications and methods of test Part 9: Calcined clay DIN EN ISO 15528, Paints, varnishes and raw materials for pa
17、ints and varnishes Sampling SO 3262-9:199(I 7)EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 787-7 October 2009 ICS 87.060.10 English Version General methods of test for pigments and extenders - Part 7: Determination of residue on sieve - Water method - Manual procedure (ISO 787-7:2009) Mt
18、hodes gnrales dessai des pigments et matires de charge - Partie 7: Dtermination du refus sur tamis - Mthode leau - Mthode manuelle (ISO 787-7:2009) Allgemeine Prfverfahren fr Pigmente und Fllstoffe - Teil 7: Bestimmung des Siebrckstandes - Wasserverfahren - Handsplverfahren (ISO 787-7:2009) This Eur
19、opean Standard was approved by CEN on 5 October 2009. 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 c
20、oncerning such national standards may be obtained 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 it
21、s own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Li
22、thuania, Luxembourg, Malta, Netherlands, 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 200
23、9 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 787-7:2009: EContents 2 Page Foreword .3 1 Scope4 2 Normative references4 3 Sampling 4 4 Apparatus.5 5 Procedure.5 6 Expression of results6 7 Test report7 Annex A (normative) Me
24、chanical stirrer.8 DIN EN ISO 787-7:2010-02 EN ISO 787-7:2009 (E) Foreword 3 varnishes“ in collaboration with Technical Committee CEN/TC 298 “Pigments and extenders” the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publicatio
25、n of an identical text or by endorsement, at the latest by April 2010, and conflicting national standards shall be withdrawn at the latest by April 2010. 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
26、 be held responsible for identifying any or all such patent rights. 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, Cyprus, Czech Republic, Denmark, Estonia,
27、Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 787-7:2009 has been approved by CEN as a
28、 EN ISO 787-7:2009 without any modification. This document (EN ISO 787-7:2009) has been prepared by Technical Committee ISO/TC 35 “Paints and DIN EN ISO 787-7:2010-02 EN ISO 787-7:2009 (E) 1 Scope This part of ISO 787 specifies a general method of test for determining the residue on sieve from a sam
29、ple of pigment or extender dispersed in water. ISO 787-18, General methods of test for pigments and extenders Part 18: Determination of residue on sieve Mechanical flushing procedure, specifies a general method of test for determining the residue on sieve from a sample of pigment or extender by a me
30、chanical flushing procedure. For most pigments and extenders, ISO 787-7 and ISO 787-18 will usually give different results, and it is therefore essential to state clearly in a specification which method is to be used and, in the test report, which method has been used. NOTE The general methods given
31、 in the various parts of ISO 787 are usually applicable to any pigment or extender. Thus only a cross-reference to the appropriate part of ISO 787 needs to be included in the International Standard giving the specification for that pigment or extender, indicating any detailed modifications that may
32、be needed in view of the special properties of the material in question. Only when the general methods are not applicable to a particular material should a different method for determination of residue on sieve be specified. 2 Normative references The following referenced documents are indispensable
33、 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 any amendments) applies. ISO 565, Test sieves Metal wire cloth, perforated metal plate and electroformed sheet Nominal sizes o
34、f openings ISO 3262-9:1997, Extenders for paints Specifications and methods of test Part 9: Calcined clay ISO 4793, Laboratory sintered (fritted) filters Porosity grading, classification and designation ISO 15528, Paints, varnishes and raw materials for paints and varnishes Sampling 3 Sampling Take
35、a representative sample of the material to be tested, as described in ISO 15528. 4 DIN EN ISO 787-7:2010-02 EN ISO 787-7:2009 (E) 4 Apparatus Use ordinary laboratory apparatus and glassware, together with the following: 4.1 Sieve, of nominal mesh aperture as required, complying with the requirements
36、 of ISO 565. The nominal mesh aperture and the diameter of the sieve used shall be stated in the test report. Sieves of nominal mesh aperture 45 m are frequently used. It is recommended that the mesh apertures of the sieve be periodically examined, using a microscope, to establish that blockage or u
37、ndue wear has not occurred. The sieve should be discarded if the mesh apertures have been affected. 4.2 Brush, hog bristle, approximate dimensions 5 mm thick, 20 mm wide and 35 mm long. 4.3 Sintered-glass crucible, of porosity grade P 40 (pore size index 16 m to 40 m) as defined in ISO 4793, or 50 m
38、l beaker. 4.4 Oven, capable of being maintained at (105 2) C. 4.5 Balance, capable of weighing up to 1 000 g to the nearest 0,1 g. 4.6 Balance, capable of weighing to the nearest 1 mg. 4.7 Desiccator, containing an efficient desiccant. 4.8 Washbottle, to contain the solution used to disperse the tes
39、t portion. 5 Procedure 5.1 General Carry out the determination in duplicate. 5.2 Test portion Using balance 4.5, weigh, to the nearest 0,1 g, into a beaker of suitable capacity, a quantity of the sample such that a sufficient residue on the sieve (4.1) is obtained. Generally, a test portion of 10 g
40、to 100 g is necessary but, in the case of products yielding a very low residue on the sieve, a larger test portion, up to 1 000 g, should be used. 5.3 Preparation of the dispersion Disperse the test portion (see 5.2) in a suitable volume of water (about 300 ml to 600 ml) containing, if required, a s
41、uitable dispersing agent (see, however, the second and third paragraphs below). If the product specification advises that mechanical assistance is commonly required to achieve thorough dispersion, a stirrer and stirrer head as specified in ISO 3262-9:1997, Subclause 6.3.4 (see Annex A), shall be use
42、d, and it is recommended that the rotation of the stirrer should not exceed (500 50) min1. The use of a mechanical stirrer shall be stated in the test report. If agreed between the interested parties, the test portion may be transferred directly to the sieve, without previous dispersion. The quantit
43、y of the dispersing agent should preferably be between 0,2 % and 0,5 % of the mass of the test portion. The type and quantity of the dispersing agent to be used shall be agreed between the interested parties and indicated in the test report. It is important that the dispersion of the pigment or exte
44、nder in the aqueous medium be thorough and that no flocculation should occur during the determination (see 5.4). 5 DIN EN ISO 787-7:2010-02 EN ISO 787-7:2009 (E) 5.4 Determination Pour the dispersion, if necessary in portions, through the sieve (4.1). With the aid of a washbottle (4.8) filled with t
45、he solution used to disperse the test portion, rinse out the beaker and pour all the rinsings through the sieve. Wash the test portion with the same solution until the washings passing through the sieve are clear and free of dispersed material. When the test portion has simply been dispersed in wate
46、r, tap water from a sprinkling rose may be used for rinsing. Depending on previous agreement between the interested parties, either break up pigment agglomerates on the sieve by application of gentle pressure using a brush (4.2) or leave such agglomerates untreated. If a brush is used, wash any part
47、icles adhering to the brush onto the sieve and wash the residue on the sieve with water to free it from dispersing agent. In order to avoid false test results, the water should preferably be filtered. Treat the residue on the sieve in accordance with one of the following alternative procedures: a) W
48、ash the residue with distilled water into a previously heated and weighed sintered-glass crucible (4.3), allow the water to filter through and dry the residue in the oven (4.4) at (105 2) C for 1 h. Allow to cool in the desiccator (4.7) and weigh to the nearest 1 mg. Use balance 4.6 for these weighi
49、ngs. Calculate the mass of the residue. b) Transfer the residue with distilled water into a previously heated and weighed 50 ml beaker. Evaporate the water and dry in the oven at (105 2) C for 1 h. Continue as described under a) above. If the melting point of the residue on the sieve is lower than 110 C, a more suitable drying temperature shall be used and this shall be stated in the test report. If the two determinations differ by more than 10 % of the larger value (unless
