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1、 Reference number ISO 10601:2007(E) ISO 2007 INTERNATIONAL STANDARD ISO 10601 Second edition 2007-03-01 Micaceous iron oxide pigments for paints Specifications and test methods Pigments doxyde de fer micac pour peintures Spcifications et mthodes dessai ISO 10601:2007(E) PDF disclaimer This PDF file
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4、tion parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2007 All rights reserved. Unles
5、s 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 either ISO at the address below or ISOs member body in the country of the requester. ISO co
6、pyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2007 All rights reserved ISO 10601:2007(E) ISO 2007 All rights reserved iii Contents Page Foreword iv Introduction v 1 Scope . 1 2 Nor
7、mative references. 1 3 Terms and definitions. 2 4 Classification. 2 5 Required characteristics and their tolerances 2 6 Sampling 3 7 Assessment of thin-flake content. 3 8 Test report . 4 -,-,- ISO 10601:2007(E) iv ISO 2007 All rights reserved Foreword ISO (the International Organization for Standard
8、ization) 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 body interested in a subject for which a technical committee has been established has the right to
9、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 Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Stand
10、ards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Inte
11、rnational Standard requires approval by at least 75 % of the member bodies casting a vote. 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 responsible for identifying any or all such patent rights. ISO 10601
12、was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee SC 2, Pigments and extenders. This second edition cancels and replaces the first edition (ISO 10601:1993), which has been technically revised. The main technical changes are: a) the description of the grades has been c
13、hanged and the grade “non-lamellar” deleted; b) the requirements for the residue on sieve have been changed. -,-,- ISO 10601:2007(E) ISO 2007 All rights reserved v Introduction Micaceous iron oxide pigments were previously included in ISO 1248 (classified in the colour group “grey with metallic shee
14、n”) but are explicity excluded from the revised edition published in 2006. In this revised edition of ISO 10601, the requirements for micaceous iron oxide pigment have been defined more clearly and relate to an essentially lamellar particle shape. Micaceous iron oxide pigments can vary in compositio
15、n, particle size range, and particle shape depending on whether they are produced synthetically or, if a refined natural oxide, on the location where the ore was mined. The primary use of micaceous iron oxide is in protective coatings for steelwork, and for optimum performance the pigment should hav
16、e a high content of thin flake-like particles. The protective action is ascribed to the close packing of pigment platelets within the paint film, forming overlapping layers that lie roughly parallel to the substrate. This impedes penetration of corrosion promoters, reduces ultra-violet degradation o
17、f the binder and improves film strength. For less critical requirements, micaceous iron oxide pigment with a lower content of thin flakes may be acceptable. Therefore in this International Standard, micaceous iron oxide pigments are classified into two groups according to their thin-flake content as
18、 determined by microscopic examination (see Table 1). For the purposes of this International Standard, pigments with a lamellar-particle content below 50 % are not considered to be “micaceous” or classified as “lamellar”. INTERNATIONAL STANDARD ISO 10601:2007(E) ISO 2007 All rights reserved 1 Micace
19、ous iron oxide pigments for paints Specifications and test methods 1 Scope This International Standard specifies the requirements and corresponding test methods for manufactured and natural micaceous iron oxide (MIO) pigments, in dry form, used primarily in protective coatings for steelwork. In acco
20、rdance with current practice, the general requirements for micaceous iron oxide pigments have been sub-divided to give a) those requirements that are essential (see Table 2) and b) those requirements that are conditional upon prior agreement between the interested parties (see Table 3). In certain i
21、nstances, reference may be made to an agreed reference pigment. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced documen
22、t (including any amendments) applies. ISO 150, Raw, refined and boiled linseed oil for paints and varnishes Specifications and methods of test ISO 787-2, General methods of test for pigments and extenders Part 2: Determination of matter volatile at 105 C ISO 787-3, General methods of test for pigmen
23、ts and extenders Part 3: Determination of matter soluble in water Hot extraction method ISO 787-5, General methods of test for pigments and extenders Part 5: Determination of oil absorption value ISO 787-9, General methods of test for pigments and extenders Part 9: Determination of pH value of an aq
24、ueous suspension ISO 1248, Iron oxide pigments Specifications and methods of test ISO 3549, Zinc dust pigments for paints Specifications and test methods ISO 15528, Paints, varnishes and raw materials for paints and varnishes Sampling -,-,- ISO 10601:2007(E) 2 ISO 2007 All rights reserved 3 Terms an
25、d definitions For the purposes of this document, the following terms and definitions apply. 3.1 micaceous iron oxide pigment refined mineral (also known as specular haematite) or a manufactured product consisting essentially of iron(III) oxide, Fe2O3, that is grey in colour with a metallic sheen and
26、 consists essentially of particles having lamellar form 4 Classification In this International Standard, micaceous iron oxide pigments are classified by grades according to their thin- flake content as shown in Table 1 and by types according to their residue on sieve as shown in Table 2. Thin-flake
27、micaceous iron oxide particles are defined as having a thickness such that they appear as sharply defined red translucent platelets when viewed under an optical microscope by transmitted light, i.e. with the light source behind the specimen under examination (see test method in Clause 7). Table 1 La
28、mellar classification Grade Thin-flake content % A 65 B 50 to 65 5 Required characteristics and their tolerances For micaceous iron oxide pigments complying with this International Standard, the essential requirements are specified in Tables 1 and 2 and the conditional requirements are referred to i
29、n Table 3. The reference pigment and the conditional requirements set out in Table 3 shall be the subject of agreement between the interested parties. The reference pigment shall comply with the requirements given in Table 1 (grade A or B) and Table 2 (type 1, 2 or 3). -,-,- ISO 10601:2007(E) ISO 20
30、07 All rights reserved 3 Table 2 Essential requirements Characteristic Requirement for MIO of type Test method 1 2 3 Iron content, expressed as iron(Ill) oxide (Fe2O3) (determined on the pigment after drying at 105 C) % (by mass) min. 85 ISO 1248 a Matter volatile at 105 C % (by mass) max. 0,5 ISO 7
31、87-2 Matter soluble in water (hot-extraction method)% (by mass) max. 0,5 ISO 787-3 63 m max. 5 5 but u 15 15 but u 35 Residue on sieve, % (by mass) 105 m max. 0,1 max. 0,1 max. 0,1 ISO 3549 a The use of 60 ml of 37 % (by mass) hydrochloric acid, approximately 1,19 g/ml, and 0,5 g of potassium chlora
32、te is recommended to facilitate dissolution of the sample. Table 3 Conditional requirements Characteristic Requirement Test method pH of aqueous suspension Shall not differ by more than 1 pH unit from that of the agreed reference pigment ISO 787-9 Oil absorption value Shall not differ by more than 1
33、5 % from that of the agreed reference pigment ISO 787-5 Total calcium, expressed as calcium oxide, % (by mass) To be agreed between the interested parties ISO 1248 6 Sampling Take a representative sample of the product to be tested, as described in ISO 15528. 7 Assessment of thin-flake content 7.1 R
34、eagent 7.1.1 Refined linseed oil, complying with the requirements of ISO 150. 7.2 Apparatus 7.2.1 Glass microscope slide, approximately 25 mm 75 mm 1 mm, and cover slip. 7.2.2 Glass rod, approximately 100 mm long and 5 mm in diameter, with rounded end. 7.2.3 Optical microscope, capable of 200 magnif
35、ication, with a 20 objective lens and fitted with high- intensity sub-stage illumination. -,-,- ISO 10601:2007(E) 4 ISO 2007 All rights reserved 7.3 Procedure Prepare a microscope slide (7.2.1) by one of the following methods: a) Place a few milligrams of a representative sample of the dry pigment (
36、see Clause 6) on the glass slide. Add a few drops of refined linseed oil (7.1.1) and gently incorporate the pigment into the oil using the glass rod (7.2.2). Place the cover slip over the pigment/oil dispersion and position on the microscope stage. b) Spread a few milligrams of the sample of the dry
37、 pigment on the glass slide and examine it in the way described below without adding linseed oil. Adjust the intensity of the light below the slide to the highest practical level. Focus sharply at 200 magnification and scan the slide until a field of view is obtained that is considered to be represe
38、ntative, and in which at least 50 particles can be seen. Thin-flake micaceous iron oxide particles appear as sharply defined red translucent platelets, whilst thicker and/or granular particles appear as black shapes. Assess the proportion of red to black particles and classify as the appropriate gra
39、de (see Table 4). Table 4 Thin-flake content Grade Appearance Thin-flake content % A High proportion of red particles 65 B Considerable proportion of red particles 50 to 65 If the thin-flake content is not obvious, count the number of red and black particles in a group of at least 50 particles. A fr
40、ame-image device is recommended to assist in this operation. Repeat the count on a duplicate slide and calculate the mean percentage of red particles. Typical photographs of the two grades of micaceous iron oxide pigment viewed with an optical microscope by transmitted light are shown in Figures 1 a
41、) and 1 b). For comparison purposes, scanning electron photomicrographs of the two grades are shown in Figures 2 a) and 2 b). 8 Test report The test report shall contain at least the following information: a) all details necessary to identify the product tested; b) a reference to this International
42、Standard (ISO 10601); 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 date(s) of the test(s). -,-,- ISO 10601:2007(E) ISO 2007 All rights reserved 5 a) Grade A Proportion of lamellar
43、particles (red): 65 % b) Grade B Proportion of lamellar particles (red): 50 % to 65 % Figure 1 Micaceous iron oxide viewed with an optical microscope by transmitted light a) Grade A Proportion of lamellar particles: 65 % b) Grade B Proportion of lamellar particles: 50 % to 65 % Figure 2 Micaceous iron oxide viewed with a scanning electron microscope ISO 10601:2007(E) ICS 87.060.10 Price based on 5 pages ISO 2007 All rights reserved -,-,-
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