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1、INTERNATIONAL STANDARD ISO 3262-15 First edition 2000-05-15 Reference number ISO 3262-15:2000(E) ISO 2000 Extenders for paints Specifications and methods of test Part 15: Vitreous silica Matires de charge pour peintures Spcifications et mthodes dessai Partie 15: Silice vitreuse Copyright Internation
2、al Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 21:52:47 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 3262-15:2000(E) ii ISO 2000 All rights reserved PDF disclaimer T
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7、requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 734 10 79 E-mail copyrightiso.ch Web www.iso.ch Printed in Switzerland Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standard
8、s 1/9972545001 Not for Resale, 04/24/2007 21:52:47 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 3262-15:2000(E) ISO 2000 All rights reserved iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (
9、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 be represented on that committee. International organizations, go
10、vernmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commis- sion (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/
11、IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some o
12、f the elements of this part of ISO 3262 may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO 3262-15 was prepared by Technical Committee ISO/TC 35,Paints and varnishes, Subcommittee SC 2,Pigments and extender
13、s. Together with the other parts (see below), this part of ISO 3262 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 s
14、pecify requirements and, where appropriate, par- ticular test methods for individual extenders. ISO 3262 consists of the following parts, under the general titleExtenders for paints Specifications and methods of test: Part 1: Introduction and general test methods Part 2: Barytes (natural barium sulf
15、ate) Part 3: Blanc fixe Part 4: Whiting Part 5: Natural crystalline calcium carbonate Part 6: Precipitated calcium carbonate Part 7: Dolomite Part 8: Natural clay Part 9: Calcined clay Part 10: Natural talc/chlorite in lamellar form Part 11: Natural talc, in lamellar form, containing carbonates Part
16、 12: 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 Copyright International Organization for Standardization Provided by IHS under
17、 license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 21:52:47 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 3262-15:2000(E) iv ISO 2000 All rights reserved Part 19: Precipitated silica Part 20: Fumed silica Part 21: Silica sand (
18、unground natural quartz) Part 22: Flux-calcined kieselguhr Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 21:52:47 MDTNo reproduction or networking permitted without license fro
19、m IHS -,-,- INTERNATIONAL STANDARDISO 3262-15:2000(E) ISO 2000 All rights reserved 1 Extenders for paints Specifications and methods of test Part 15: Vitreous silica 1Scope This part of ISO 3262 specifies requirements and corresponding methods of test for vitreous silica. 2Normative references The f
20、ollowing normative documents contain provisions which, through reference in this text, constitute provisions of this part of ISO 3262. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of ISO 326
21、2 are encouraged to investigate the possi- bility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Stan
22、dards. ISO 787-2:1981,General methods of test for pigments and extenders Part 2: Determination of matter volatile at 105 C. ISO 787-3:1),General methods of test for pigments and extenders Part 3: Determination of matter soluble in water Hot extraction method. ISO 787-5:1980,General methods of test f
23、or pigments and extenders Part 5: Determination of oil absorption value. ISO 787-7:1981,General methods of test for pigments and extenders Part 7: Determination of residue on sieve Water method Manual procedure. ISO 787-9:1981,General methods of test for pigments and extenders Part 9: Determination
24、of pH value of an aqueous suspension. ISO 787-14:1973,General methods of test for pigments Part 14: Determination of resistivity of aqueous extract. ISO 3262-1:1997,Extenders for paints Specifications and methods of test Part 1: Introduction and general test methods. ISO 3696:1987,Water for analytic
25、al laboratory use Specification and test methods. ISO 15528:2),Paints, varnishes and raw materials for paints and varnishes Sampling. 1)To be published. (Revision of ISO 787-3:1979) 2)To be published. (Revision of ISO 842:1984 and ISO 1512:1991) Copyright International Organization for Standardizati
26、on Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 21:52:47 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 3262-15:2000(E) 2 ISO 2000 All rights reserved 3Term and definition For the purposes of this part
27、 of ISO 3262, the following term and definition applies. 3.1 vitreous silica a non-crystalline modification of silica For use as an extender it is supplied ground to a powder. There are two different grades of vitreous silica in use, the grade depending on the raw materials used in its manu- facture
28、: Grade A (quartz glass): A transparent form of vitreous silica that is usually made from molten rock crystal. Grade B (fused silica): An opaque form of vitreous silica that is made from molten silica sand. The opacity of the product is due to very small gas bubbles incorporated in it. 4Requirements
29、 and test methods For vitreous silica complying with this part of ISO 3262, the essential requirements are specified in Table 1 and the conditional requirements are listed in Table 2. Table 1 Essential requirements CharacteristicUnit Requirement Test method Grade A (quartz glass) Grade B (fused sili
30、ca) Silica content, min.99,599See clause 6 Quartz content, max. 0,51,0X-ray diffraction Cristobalite content, max. Matter volatile at, max.0,2ISO 787-2 a Loss on ignition, max. 0,1 0,5 b 0,2 0,5 b ISO 3262-1 Matter soluble in water, max.0,1ISO 787-3 pH value of aqueous suspension 5 to 7 5 to 9 b ISO
31、 787-9 a Another method may be agreed between the interested parties provided it gives the same results. b These values take into account the effect on the result if the product has undergone surface treatment. %(m/m) %(m/m) 105 C %(m/m) %(m/m) %(m/m) Copyright International Organization for Standar
32、dization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 21:52:47 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 3262-15:2000(E) ISO 2000 All rights reserved 3 5Sampling Take a representative sample of th
33、e product to be tested, as described in ISO 15528. 6Determination of silica content 6.1Reagents During the analysis, use only reagents of recognized analytical grade and only water of at least grade 3 purity as de- fined in ISO 3696. 6.1.1Sulfuric acid, diluted. Add 1 part by volume of concentrated
34、sulfuric acid, approximately, slowly to 1 part by volume of water. 6.1.2Hydrofluoric acid, approximately,. 6.2Apparatus Use ordinary laboratory apparatus and glassware, together with the following: 6.2.1Platinum dish. 6.2.2Muffle furnace. 6.3Procedure Weigh, to the nearest, approximatelyof the test
35、sample (clause 5), previously dried atin accord- ance with ISO 787-2, into the tared platinum dish (6.2.1), ignite in the muffle furnace (6.2.2) atto constant mass () and allow to cool in a desiccator containing phosphorus pentoxide. Add approximatelyof sulfuric acid (6.1.1). Heat the platinum dish
36、gently until fuming ceases and then continue the heating atforin the muffle furnace. Remove from the furnace, allow to cool in a desiccator and weigh to the nearest(). Add to the residue in the platinum dishof hydrofluoric acid (6.1.2) andof sulfuric acid (6.1.1) and evapo- rate to a syrup, taking c
37、are to avoid loss by spitting. Cool the dish and wash the sides down with small quantities of Table 2 Conditional requirements CharacteristicUnitRequirementTest method Residue onsieve To be agreed between the interested parties ISO 787-7 Particle size distribution (instrumental method) To be agreed
38、between the interested parties a Colour To be agreed between the interested parties ISO 3262-1 Lightness To be agreed between the interested partiesb Resistivity of aqueous extractISO 787-14 Oil absorption valueISO 787-5 a A general description of a sedimentation method using X-ray absorption is giv
39、en in EN 725-5:1996,Advanced technical ceramics Methods of test for ceramic powders Part 5: Determination of the particle size distribution. b Test method in preparation. 45m%(m/m) %(m/m) m g/100 g 1+1 96 %(m/m) 1,84 g/ml 40 %(m/m) 1,13 g/ml 1 mg2 g105 C (1 00025) C m1 1 ml 900 C 15 min 0,1 mgm2 15
40、ml1 ml Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 21:52:47 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 3262-15:2000(E) 4 ISO 2000 All right
41、s reserved water. Then add a furtherof hydrofluoric acid and evaporate to dryness. Heat the residue on a hot-plate until white fumes are no longer evolved, then ignite in the muffle furnace atfor. Remove the dish from the furnace, cool in the desiccator and weigh to the nearest(). 6.4Expression of r
42、esults Calculate the silica content, expressed as a percentage by mass, using the equation: where is the mass, in grams, of the ignited residue; is the mass, in grams, after treatment with sulfuric acid and igniting; is the mass, in grams, after treatment with hydrofluoric acid and igniting. 7Test r
43、eport 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 3262 (ISO 3262-15); c)the results of the tests and whether or not the product complies with the relevant specification limits; d)any devia
44、tion from the test methods specified; e)the dates of the tests. 10 ml 900 C 15 min 0,1 mgm3 w(SiO2) w(SiO2) = m2 m3 m1 100 m1 m2 m3 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/200
45、7 21:52:47 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 21:52:47 MDTNo reproduction or networking per
46、mitted without license from IHS -,-,- ISO 3262-15:2000(E) ICS 87.060.10 Price based on 4 pages ISO 2000 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/24/2007 21:52:47 MDTNo reproduction or networking permitted without license from IHS -,-,-