1、BRITISH STANDARD Extenders for paints - Specifications and methods of test - Part 14: Cristobalite The European Standard EN IS0 3262-142000 has the status of a Briikh Standard ICs 87.060.10 BS EN IS0 3262-14:2000 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITFED BY COPYRIGHT LAW STD-BSI BS EN IS
2、0 32b2-14-ENCL 2000 1b24bb9 OBb5391 07T ES EN IS0 3262-142000 been prepared under the direction of the Sector Amd. No. Date Committee for Materiais and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 August 2000 O BSI 082000 ISBN O 580 36371 6 Nati
3、onal foreword Comments This British Standard is the official English language version of EN IS0 326214:2000. It is identical with IS0 3262-142000. Together with the other parts of BS EN IS0 3262, it will supersede BS 17951976 which is declared obsolescent. The UK participation in its preparation was
4、 entrusted to Technical Committee SWl, Pigments and extenders, which has the responsibility to: - aid enquirers to understand the text, - present to the responsible internationalEuropean committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; - mon
5、itor relaed international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC standards nody include an annex which lists norma
6、tive references to international publications with their corresponding European publications. The British Stcuidards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Cor
7、respondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does
8、not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN IS0 titie page, the EN IS0 foreword page, the IS0 title page, pages ii to iv, pages 1 to 3, an annex ZA page, an inside back cover and a back cover. The BSI cop
9、yright notice displayed in this document indicates when the document was last issued EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN IS0 3262-14 May 2000 ICs 87.060.1 O English version Extenders for paints - Specifications and methods of test - Part 14: Cristobalite (IS0 3262-1 4:2000) Matires
10、de charge pour peintures - Spcifications et mthodes dessai - Partie 14: Cristobalite (IS0 3262- 14:2000) Fllstoffe fr Beschichtungsstoff e - Anforderungen und Prufverfahren - Teil 14: Cristobalit (IS0 3262-14:2000) This European Standard was approved by CEN on 10 March 2000. CEN members are bound to
11、 comply with the CENKENELEC 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 may be obtained on application to the Central
12、 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 Central Secretariat has the same status as the
13、 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 Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION
14、EUROPISCHES KOMITEE FUR NORMUNG COMITE EUROPEEN DE NORMALISATION Central Secretariat: rue de Stassart, 36 8-1050 Brussels Q 2000 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN IS0 3262-14:2000 E STD-BSI BS EN IS0 3262-14-ENGL 2000
15、 M 1624669 0865373 942 EN IS0 3262-14:2000 I Foreword The text of the International Standard IS0 3262-1 4:2000 has been prepared by Technical Committee ISOTTC 35 “Paints and varnishes“ in collaboration with Technical Committee CENTC 298 “Pigments and extenders“, the secretariat of which is held by D
16、IN. 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 November 2000, and conflicting national standards shall be withdrawn at the latest by November 2000. According to the CENKENELEC Internal Regula
17、tions, 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, Spain, Sweden, Switzerland and the Un
18、ited Kingdom. Endorsement notice The text of the International Standard IS0 3262-14:2000 was approved by CEN as a European Standard without any modification. NOTE: Normative references to International Standards are listed in annex ZA (normative). STD-BSI BS EN IS0 3262-14-ENGL 2000 1624664 0865394
19、889 EN IS0 3262-14:2000 INTERNATIONAL STANDARD IS0 326211 4 First edition 2000-05-01 Extenders for paints - Specifications and methods of test - Part 14: Cristobalite Matires de charge pour peintures - Spcifications et mthodes dessai - Partie 14: Cristobalite Reference number IS0 3262-1 4:2000(E) ST
20、D-BSI BS EN IS0 32b2-LI-ENGL 2000 Lb24669 0865375 715 EN IS0 3262-14:2000 Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 te
21、chnical com- mittees. 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 liai- son with ISO, also take part in the work. IS0 collaborates c
22、losely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3. Draft International Standards adopted by the technical committees are circulat
23、ed 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 of the elements of this part of IS0 3262 may be the subject of patent rights, IS0 shall not be held res
24、ponsible for identifying any or all such patent rights. International Standard IS0 3262-1 4 was prepared by Technical Committee ISOTTC 35, Paints and varnishes, Sub- committee SC 2, Pigments and extenders. Together with the other parts (see below), this part of IS0 3262 cancels and replaces IS0 3262
25、: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, par- ticular test methods for individual extenders. I
26、S0 3262 consists of the following parts, under the general title Extenders for paints - Specifications and methods of fest: - Part 1: Introduction and general test methods - Part 2: Barytes (natural barium sulfate) - Part 3: Blanc fixe - Part 4: Whiting - Part 5: Natural crystalline calcium carbonat
27、e - Part 6: Precipitated calcium carbonate - Part 7: Dolomite - Part 8: Natural clay - Part 9: Calcined clay - Part 70: Natural faldchlorite in lamellar form - Part 1 1: Natural talc, in lamellar form, containing carbonates - Part 12: Muscovite-type mica - Part 13: Natural quartz (ground) - Part 14:
28、 Cristobalite - Part 15: Vitreous silica - Part 16: Aluminium hydroxides - Part 17: Precipitated calcium silicate - Part 18: Precipitated sodium aluminium silicate iii STD.BSI ES EN IS0 3262-14-ENGL 2000 = Lb24bb9 08b539b b51 = EN IS0 3262-14:2000 - Part 19: Precipitated silica - Part 20: Fumed sili
29、ca - Part 21: Silica sand (unground natural quartz) - Part 22: Flux-calcined kieselguhr STDmBSI BS EN IS0 32bZ-Lq-ENGL 2000 = Lb24bb7 OBb5397 598 EN IS0 3262-14:2000 Extenders for paints - Specifications and methods of test - Part 14: Cristobalite 1 Scope This part of IS0 3262 specifies requirements
30、 and corresponding methods of test for cristobalite. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of IS0 3262. For dated references, subsequent amendments to, or revisions of, any of these public
31、ations do not apply. However, parties to agreements based on this pari of IS0 3262 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
32、. Members of IS0 and IEC maintain registers of currently valid International Standards. IS0 787-2:1981, General methods of test for pigments and extenders - Part 2: Determination of mafter volatile at 705 OC. IS0 787-3:-), General methods of test for pigments and extenders - Part 3: Determination of
33、 mafter soluble in water - Hot extraction method, IS0 787-5:1980, General methods of test for pigments and extenders - Part 5: Determination of oil absorption value. IS0 787-7:1981, General methods of test for pigments and extenders - Part 7: Determination of residue on sieve - Water method - Manual
34、 procedure. IS0 787-9:1981, General methods of test for pigments and extenders - Part 9: Determination of pH vahe of an aqueous suspension. IS0 787-14:1973, Genera/ methods of test for pigments - Part 74: Determination of resistivity of aqueous extract. IS0 3262-1 :1997, Extenders for paints - Speci
35、fications and methods of test - Part 7: Introduction and general test methods. IS0 3696:1987, Water for analytical laboratory use - Specification and test methods. IS0 15528:-*), Paints, varnishes and raw materials for paints and varnishes - Sampling. 3 Term and definition For the purposes of this p
36、art of IS0 3262, the following term and definition applies. 1) To be published. (Revision of IS0 787-3:1979) 2) To be published. (Revision of IS0 842:1984 and IS0 1512:1991) 1 STD=BSI BS EN IS0 3262-14-ENGL 2000 1624667 0865398 424 EN IS0 3262-142000 Silica content, min. Matter volatile at 105 OC, m
37、ax. Loss on ignition, max. Matter soluble in water, max. 3.1 cristobalite a low-temperature modification of crystalline silicon dioxide with a theoretical density of 2,35 g/cm3 I 4 Requirements and test methods Yo (m/m) 98 See clause 6 YO (m/m) 092 IS0 787-2a % (m/m) 0,Zb IS0 3262-1 % (m/m) 02 IS0 7
38、87-3 OS For cristobalite complying with this part of IS0 3262, the essential requirements are specified in Table 1 and the con- ditional requirements are listed in Table 2. Characteristic Unit Requirement Test method I I ristobalite content, min. 1 % (m/m) I 60 I X-ray diffraction I Particle size di
39、stribution 1 (instrumental method) Lightness pH value of aqueous r suspension Colour - 1-1 IS0 3262-1 6 to 9 6 to lob Resistivity of aqueous extract Oil absorption value I IS0 787-9 interested parties fl + m IS0 787-1 4 dl00 g IS0 787-5 I I I a Another method may be agreed between the interested par
40、ties provided it gives the same results. These values take into account the effect on the result if the product has undergone surface treatment. To be agreed between the interested parties 787-7 I I Residue on 45 pm sieve I Yo (m/m) I To be agreed between the interested partiesa To be agreed between
41、 the I - I Tobeagreed between the I interested partiesb 5 Sampling Take a representative sample of the product to be tested, as described in IS0 15528. 6 Determination of silica content 6.1 Reagents During the analysis, use only reagents of recognized analytical grade and only water of at least grad
42、e 3 purity as de- fined in IS0 3696. 6.1.1 Sulfuric acid, diluted 1 + 1. 2 Add 1 part by volume of concentrated sulfuric acid, approximately 96 YO (m/m), p M 1,84 g/ml, slowly to 1 part by volume of water. 6.1.2 Hydrofluoric acid, approximately 40 % (m/m), p M 1,13 g/ml. 6.2 Apparatus Use ordinary l
43、aboratory apparatus and glassware, together with the following: 6.2.1 Platinum dish. 6.2.2 Muffle furnace. 6.3 Procedure Weigh, to the nearest 1 mg, approximately 2 g of the test sample (clause 5), previously dried at 105 OC in accord- ance with IS0 787-2, into the tared platinum dish (6.2.1), ignit
44、e in the muffle furnace (6.2.2) at (1 O00 f 25) OC to constant mass (ml) and allow to cool in a desiccator containing phosphorus pentoxide. Add approximately 1 ml of sulfuric acid (6.1.1). Heat the platinum dish gently until fuming ceases and then continue the heating at 900 OC for 15 min in the muf
45、fle furnace. Remove from the furnace, allow to cool in a desiccator and weigh to the nearest 0,l mg (m). Add to the residue in the platinum dish 15 ml of hydrofluoric acid (6.1.2) and 1 ml of sulfuric acid (6.1.1) and evapo- rate to a syrup, taking care to avoid loss by spitting. Cool the dish and w
46、ash the sides down with small quantities of water. Then add a further 10 ml of 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 at 900 OC for 15 min. Remove the dish from the furnace, cool in the de
47、siccator and weigh to the nearest 0,l mg (m3). 6.4 Expression of results Calculate the silica content w(Si02), expressed as a percentage by mass, using the equation: w(SiO2) = m2 -m3 x 100 ml where ml is the mass, in grams, of the ignited residue; mz is the mass, in grams, after treatment with sulfu
48、ric acid and igniting; m3 is the mass, in grams, after treatment with hydrofluoric acid and igniting. 7 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 part of IS0 3262 (IS0 3262-1 4); c) th
49、e 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. 3 STDmBSI BS EN IS0 32b2-14-ENGL 2000 W Lb24bb9 0865400 902 EN IS0 3262-14:2000 Annex ZA (normative) Normative references to international publications with their relevant European publications This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the
