1、BRITISH STANDARD BS EN ISO 3262-9:1998 Extenders for paints Specifications and methods of test Part 9: Calcined clay The European Standard EN ISO3262-9:1998 has the status of a BritishStandard ICS 87.060.10BSENISO3262-9:1998 This British Standard, having been prepared under the directionof the Secto
2、r Board for Materials and Chemicals, was published under the authority of the Standards Board and comes into effect on 15September1998 BSI 05-1999 ISBN 0 580 30438 8 National foreword This British Standard is the English language version of EN ISO3262-9:1998. It is identical with ISO3262-9:1997. Tog
3、ether with the other parts of BSENISO3262, it will supersede BS1795:1976 which is declared obsolescent. The UK participation in its preparation was entrusted to Technical Committee STI/1, Pigments, which has the responsibility to: aid enquirers to understand the text; present to the responsible inte
4、rnational/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to it
5、s secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC standards normally include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement international or European publica
6、tions referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provis
7、ions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, theEN ISO title p
8、age, page 2, the ISO title page, pageii, pages 1 to6 and aback cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date CommentsBSENI
9、SO3262-9:1998 BSI 05-1999 i Contents Page National foreword Inside front cover Foreword 2 Foreword ii Text of ISO 3262-9 1ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO3262-9 June1998 ICS87.060.10 Descriptors: See ISO document English version Extenders for paints Specifications and
10、 methods oftestPart9: Calcined clay (ISO3262-9:1997) Matires de charge pour peintures Spcifications et mthodes dessai Partie9:Kaolin calcin (ISO3262-9:1997) Fllstoffe fr Beschichtungsstoffe Anforderungen und Prfverfahren Teil9:Calcinierter Kaolin (ISO3262-9:1997) This European Standard was approved
11、by CEN on14 May1998. 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
12、 may be obtained on application to the Central Secretariat 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
13、Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Ki
14、ngdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1998 CEN All rights of exploitation in any form and by any means reserved worldwideforCENnationalMembers. Ref. No. EN ISO3262-9:199
15、8 EENISO3262-9:1998 BSI 05-1999 2 Foreword The text of the International Standard from Technical Committee ISO/TC35 “Paints and varnishes” of the International Organization for Standardization (ISO) has been taken over as an European Standard by Technical Committee CEN/TC298 “Pigments and extenders”
16、, 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 December1998, and conflicting national standards shall be withdrawn at the latest by December1998. Accord
17、ing to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal,
18、 Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of the International Standard ISO3262-9:1997 has been approved by CEN as a European Standard without any modification. NOTENormative references to International Standards are listed in Annex ZA(normative). contents Page
19、1 Scope 1 2 Normative references 1 3 Definition 1 4 Requirements and test methods 1 5 Sampling 2 6 Determination of the particle size distribution 2 7 Test report 5 Annex ZA (normative) Normative references to international publications with their relevant European publications 6 Figure 1 Sedimentat
20、ion vessel and pipette 3 Table 1 Essential requirements 1 Table 2 Conditional requirements 2ENISO3262-9:1998 ii BSI05-1999 Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International
21、 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 ISO, a
22、lso 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 Interna
23、tional Standard requires approval by at least75% of the member bodies casting a vote. International Standard ISO3262-9 was prepared by Technical Committee ISO/TC35, Paints and varnishes, Subcommittee SC2, Pigments and extenders. Together with the subsequent parts, this International Standard cancels
24、 and replaces ISO3262:1975 which has been technically revised and divided into parts. Part1 comprises the definition for the term extender and a number of test methods that are applicable to most extenders, whilst parts2 and the following specify requirements and, where appropriate, particular test
25、methods for individual extenders. At present, the following parts of ISO3262 are in preparation, under the generaltitle Extenders for paints Specification and methods of test Part 1: Introduction and general test methods; Part 2: Baryte (natural barium sulfate); Part 3: Blanc fixe; Part 4: Whiting;
26、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 12: Muscovite-type mica; Part 13
27、: 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 natural quartz); Par
28、t 22: Diatomaceous earth (kieselguhr). Descriptors: Paints, extenders, clays, kaolin, specifications, materials specifications, tests.ENISO3262-9:1998 BSI 05-1999 1 1 Scope This part of ISO3262 specifies the requirements and the corresponding methods of test for calcinedclay. 2 Normative references
29、The following standards contain provisions which, through reference in this text, constitute provisions of this part of ISO3262. 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 ISO3262 are encourage
30、d 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. ISO787-2:1981, General methods of test for pigments and extenders Part2: Determination of matter volatile at10
31、5 C. ISO787-3:1979, General methods of test for pigments and extenders Part3: Determination of matter soluble in water Hot extraction method. ISO787-9:1981, General methods of test for pigments and extenders Part9: Determination of pH value of an aqueous suspension. ISO787-14:1973, General methods o
32、f test for pigments Part14: Determination of resistivity of aqueous extract. ISO787-18:1983, General methods of test for pigments and extenders Part18: Determination of residue on sieve Mechanical flushing procedure. ISO842:1984, Raw materials for paints and varnishes Sampling. ISO3262-1:1997, Exten
33、ders for paints Specifications and methods of testPart1: Introduction and general test methods. ISO3696:1987, Water for analytical laboratory useSpecification and test methods. 3 Definition For the purposes of this part of ISO3262, the following definition applies: 3.1 calcined clay aluminium silica
34、te (Al 2 O 3 2SiO 2 ), lamellar, mainly amorphous in structure as determined by X-ray diffraction, produced from natural clay by thermal dehydration, consisting partly of crystalline mullite(3Al 2 O 3 2SiO 2 ) 4 Requirements and test methods For calcined clay complying with this part of ISO3262, the
35、 essential requirements are specified in Table 1 and the conditional requirements are listed in Table 2. Table 1 Essential requirements Characteristic Unit Requirement grade Test method A B C Content of Al 2 O 3 2SiO 2 % (m/m) min. 90 X-ray fluoresence Residue on sieve,45m %(m/m) max. 0,02 0,05 0,1
36、ISO787-18 Particle size distribution (Andreasen method)2m % (m/m) min. 90 70 40 See clause6 Matter volatile at105 C % (m/m) max. 0,5 ISO787-2 a Loss on ignition % (m/m) max. 1 ISO3262-1 Matter soluble in water (hotextraction method) % (m/m) max. 0,2 ISO787-3 pH value of aqueous suspension 5 to9 ISO7
37、87-9 a By agreement between the interested parties, test portions other than10g may be used.ENISO3262-9:1998 2 BSI 05-1999 Table 2 Conditional requirements 5 Sampling Take a representative sample of the product to be tested, as described in ISO842. 6 Determination of the particle size distribution B
38、ecause of its simple procedure and good reproducibility the Andreasen method 1)is given as the referee method. Other methods may, however, be used by agreement between the interested parties, but in such cases it will be necessary to agree on appropriate limits. 6.1 Principle The rate of fall of sph
39、erical particles through a medium in which they are dispersed is proportional to the square of the particle diameter (Stokes law). The Andreasen method for determination of particle size distribution makes use of this relationship expressing the particle size distribution in terms of the distributio
40、n of spherical particles having the same settlement rate. A suspension is prepared and the concentration of solids at a fixed distance below the surface is determined at a series of time intervals selected to correspond to a series of given sphere diameters. 6.2 Reagents Use only reagents of recogni
41、zed analytical grade and only water of at least grade3 purity as defined in ISO3696. 6.2.1 Dispersing agent. Dissolve0,2g of sodium carbonate and0,1g of sodium hexametaphosphate in750ml of water. 6.3 Apparatus (seeFigure 1) Ordinary laboratory apparatus and glassware, together with the following: 6.
42、3.1 Sedimentation vessel, glass, of56mm internal diameter and having a graduated scale from0mm to200mm marked on its side. The zero graduation line shall be not less than25mm from the inside base of the vessel, and the capacity of the vessel up to the200mm graduation line shall be between550ml and62
43、0ml. 6.3.2 Pipette, fitted with a two-way tap and a side discharge tube. NOTE 1The capacity of the pipette to the graduation line is conveniently10ml. A bell-shaped dome with a ground glass joint to fit the neck of the sedimentation vessel shall be fused to the pipette. A small vent hole shall be ma
44、de in this dome. The tip of the pipette stem shall be level with the zero line on the sedimentation vessel. The stem from the pipette bulb to the tip shall be made of capillary glass tubing with a bore not less than1mm and not more than1,3mm in diameter. The tube above the bulb shall have a bore of4
45、mm to4,5mm in diameter. 6.3.3 Constant-temperature bath of at least15l capacity, having transparent walls, capable of being maintained at a temperature of (23 0,5) C, into which the sedimentation vessel can be immersed up to the200mm graduation line. The bath shall be positioned away from sources of
46、 vibration, and the circulating system shall not cause vibration. 6.3.4 Mechanical stirrer, capable of rotating at a suitable speed for complete dispersion (1000 100) min 1is generally suitable. The stirrer shall be capable of lifting the dispersion and avoiding the creation of a vortex. NOTE 2A sui
47、table stirrer may be made from an approximately40mm diameter brass disc with four equally spaced cuts, the cut sections being turned upwards at an angle of30 to the horizontal. Characteristic Unit Requirement Test method Particle size distribution (instrumental method) % (m/m) To be agreed between t
48、he interested parties To be agreed between the interested parties a Colour ISO3262-1 Lightness To be agreed between the interested parties b Resistivity of aqueous extract 7m ISO787-14 a A general description of the sedimentation method, with the detection of X-ray absorption, is given in EN725-5, A
49、dvanced technical ceramics Methods of test for ceramic powders Part5: Determination of particle size distribution. b Test method in preparation. 1) Andreasen, A.H.M., Lundberg, I.; “Berichte aus der deutschen Keramischen Gesellschaft” 11 (1930), 5, pages312 to323ENISO3262-9:1998 BSI 05-1999 3 Figure 1 Sedimentation vessel and pipetteENISO3262-9:1998 4 BSI 05-1999 6.3.5 Dispersion vessel, of appropriate dimensions, such as a1000ml gas jar. 6.3.6 Ana
