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1、A Reference number ISO 3262-5:1998(E) INTERNATIONAL STANDARD ISO 3262-5 First edition 1998-07-01 Extenders for paints Specifications and methods of test Part 5: Natural crystalline calcium carbonate Matires de charge pour peintures Spcifications et mthodes dessai Partie 5: Carbonate de calcium crist
2、allin naturel ISO 3262-5:1998(E) ISO 1998 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher. Internat
3、ional Organization for Standardization Case postale 56 CH-1211 Genve 20 Switzerland Internetisoiso.ch Printed in Switzerland ii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing Internat
4、ional Standards is normally carried out through ISO technical committees. Each member body 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 I
5、SO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an In
6、ternational Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard ISO 3262-5 was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee SC 2, Pigments and extenders. Together with the other parts (see below), this part of ISO 3
7、262 cancels and replaces ISO 3262:1975, which has been technically revised. Part 1 comprises the definition of the term extender and a number of test methods that are applicable to most extenders, whilst part 2 and the following parts specify requirements and, where appropriate, particular test meth
8、ods for individual extenders. At present, the following parts of ISO 3262 are published or in preparation, under the general title Extenders for paints Specifications and methods of test: Part 1: Introduction and general test methods Part 2: Barytes (natural barium sulfate) Part 3: Blanc fixe Part 4
9、: Whiting Part 5: Natural crystalline calcium carbonate Part 6: Precipitated calcium carbonate Part 7: Dolomite Part 8: Natural clay Part 9: Calcined clay ISOISO 3262-5:1998(E) iii Part 10: Natural talc/chlorite in lamellar form Part 11: Natural talc, in lamellar form, containing carbonates Part 12:
10、 Muscovite-type mica Part 13: Natural quartz (ground) Part 14: Cristobalite Part 15: Vitreous silica Part 16: Aluminium hydroxides Part 17: Precipitated calcium silicate Part 18: Precipitated sodium aluminium silicate Part 19: Precipitated silica Part 20: Fumed silica Part 21: Silica sand (unground
11、natural quartz) Part 22: Diatomaceous earth (kieselguhr) -,-,- -,-,- INTERNATIONAL STANDARD ISOISO 3262-5:1998(E) 1 Extenders for paints Specifications and methods of test Part 5: Natural crystalline calcium carbonate 1 Scope This part of ISO 3262 specifies requirements and corresponding methods of
12、test for natural crystalline calcium carbonate. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this part of ISO 3262. At the time of publication, the editions indicated were valid. All standards are subject to revisio
13、n, and parties to agreements based on this part of ISO 3262 are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. ISO 787-2:1981, General methods of te
14、st for pigments and extenders Part 2: Determination of matter volatile at 105 C. ISO 787-3:1979, General methods of test for pigments and extenders Part 3: Determination of matter soluble in water Hot extraction method. ISO 787-7:1981, General methods of test for pigments and extenders Part 7: Deter
15、mination of residue on sieve Water method Manual procedure. ISO 787-8:1979, General methods of test for pigments and extenders Part 8: Determination of matter soluble in water Cold extraction method. ISO 787-9:1981, General methods of test for pigments and extenders Part 9: Determination of pH value
16、 of an aqueous suspension. ISO 787-14:1973, General methods of test for pigments Part 14: Determination of resistivity of aqueous extract. ISO 842:1984, Raw materials for paints and varnishes Sampling. ISO 3262-1:1997, Extenders for paints Specifications and methods of test Part 1: Introduction and
17、general test methods. ISO 3696:1987, Water for analytical laboratory use Specification and test methods. 3 Definition For the purposes of this part of ISO 3262, the following definition applies: 3.1 natural crystalline calcium carbonate: A calcium carbonate derived from limestone and marble. The tri
18、gonal rhombic crystals tend to be rather larger than those of chalk. Limestone is a consolidated sedimentary rock whereas marble is a metamorphic carbonate rock. ISO 3262-5:1998(E) ISO 2 4 Requirements and test methods For natural crystalline calcium carbonate complying with this part of ISO 3262, t
19、he essential requirements are specified in table 1 and the conditional requirements are listed in table 2. Table 1 Essential requirements CharacteristicUnitRequirementTest method Grade AGrade BGrade CGrade D CaCO3 content, min. % (m/m)99989590ISO 3262-1 Matter volatile at 105 C, max.% (m/m)0,4ISO 78
20、7-2 Loss on ignition, max.% (m/m) 46 1) ISO 3262-1 Matter soluble in water, max.% (m/m)0,5 ISO 787-3 or ISO 787-8 2) pH value of aqueous suspension 8 to 10 1) ISO 787-9 Matter insoluble in hydrochloric acid, max. % (m/m)128See clause 6 1) These values do not take account of the effect on the result
21、of any surface treatment. 2) Method to be agreed between the interested parties. Table 2 Conditional requirements CharacteristicUnitRequirementTest method Residue on 45 mm sieve% (m/m)To be agreed between the interested parties ISO 787-7 Particle size distribution (instrumental method) % (m/m) To be
22、 agreed between the interested parties 1) ColourISO 3262-1 LightnessTo be agreed between the interested parties To be agreed between the interested parties 2) Resistivity of aqueous extractmISO 787-14 1) A general description of a sedimentation method using X-ray absorption is given in EN 725-5:1996
23、, Advanced technical ceramics Methods of test for ceramic powders Part 5: Determination of the particle size distribution. 2) Test method in preparation. 5 Sampling Take a representative sample of the product to be tested, as described in ISO 842. ISO ISO 3262-5:1998(E) 3 6 Determination of matter i
24、nsoluble in hydrochloric acid 6.1 Reagents During the analysis, use only reagents of recognized analytical grade and only water of at least grade 3 purity as defined in ISO 3696. 6.1.1 Hydrochloric acid, approximately 25 % (m/m), r 1,125 g/ml. 6.2 Apparatus Use ordinary laboratory apparatus and glas
25、sware, together with the following: 6.2.1 Membrane filter, pore size 0,8 m. 6.2.2 Air oven, capable of being maintained at (105 2) C. 6.3 Procedure Weigh, to the nearest 0,1 mg, approximately 10 g (m0) of the test sample into a 600 ml beaker. Add 50 ml of water and, carefully, approximately 50 ml of
26、 hydrochloric acid (6.1.1). Cover the beaker with a watch glass and boil the solution for 15 min. Dry the membrane filter (6.2.1) in the air oven (6.2.2) at (105 2) C to constant mass, cool in a desiccator to room temperature and weigh it to the nearest 0,1 mg (m1). Then filter the solution through
27、it. Wash the residue on the filter eight times with hot distilled water. Dry the residue on the filter in the air oven at (105 2) C for about 1 h. Allow to cool in a desiccator to room temperature and weigh to the nearest 0,1 mg (m2). 6.4 Expression of results Calculate the matter insoluble in hydro
28、chloric acid w(MIHCl), expressed as a percentage by mass, using the equation where m0 is the mass, in grams, of the test portion; m1 is the mass, in grams, of the dried membrane filter; m2 is the mass, in grams, of the dried membrane filter plus the residue. 7 Test report The test report shall conta
29、in at least the following information: a) all details necessary to identify the product tested; b) a reference to this part of ISO 3262 (ISO 3262-5); c) the results of the tests and whether or not the product complies with the relevant specification limits; d) any deviation from the test methods specified; e) the dates of the tests. w(MI ) = - 100 HCl 21 0 mm m ISO 3262-5:1998(E) ISO ICS 87.060.10 Descriptors: paints, extenders, calcium carbonates, specifications, materials specifications, tests. Price based on 3 pages