1、BRITISH STANDARD BS EN ISO 8780-1:1995 Incorporating Amendment No.1 Pigments and extenders Methods of dispersion for assessment of dispersion characteristics Part 1: Introduction The European Standard EN ISO8780-1:1995 has the status of a BritishStandardBSENISO8780-1:1995 This BritishStandard, havin
2、g been prepared under the directionof the Pigments, Paintsand Varnishes StandardsPolicy Committee, waspublished under the authorityof the Standards Boardand comes intoeffect on 30 April1991 BSI04-2000 The following BSI references relate to the work on this standard: Committee reference PVC/1 Draft f
3、or comment86/52353DC ISBN 0 580 19534 1 Committees responsible for this BritishStandard The preparation of this BritishStandard was entrusted by the Pigments, Paints and Varnishes Standards Policy Committee (PVC/-) to Technical Committee PVC/1, upon which the following bodies were represented: Alumi
4、nium Powder and Paste Association British Cement Association British Railways Board Chemical Industries Association Oil and Colour Chemists Association Paintmakers Association of Great Britain Ltd Titanium Pigment Manufacturers Technical Committee Zinc Development Association Amendments issued since
5、 publication Amd. No. Date Comments 8533 August 1995 Indicated by a sideline in the marginBSENISO8780-1:1995 BSI 04-2000 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 Text of EN ISO8780-1 3 Publication(s) referred to Inside back coverBSENISO8780-1:1995 ii
6、BSI 04-2000 National foreword This Part of BS3483 has been prepared under the direction of the Pigments, Paints and Varnishes Standards Policy Committee. It is identical with ISO8780-1:1990 “Pigments and extenders Methods of dispersion for assessment of dispersion characteristics Part 1: Introductio
7、n”, published by the International Organization for Standardization (ISO). In1994 the European Committee for Standardization (CEN) accepted ISO8780-2:1990 as European Standard EN ISO8780-1:1995. As a consequence of implementing the European Standard this BritishStandard is renumbered BSEN ISO8780-1
8、and any reference to BS3483-D1 should be read as a reference to BS EN ISO8780-1. 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 not of itself
9、confer immunity from legal obligations. Cross-references International Standard Corresponding BritishStandard BS3483 Methods for testing pigments for paints ISO8780-2:1990 Part D2:1991 Method of dispersion for assessment of dispersion characteristics using an oscillatory shaking machine (Identical)
10、ISO8780-3:1990 Part D3:1991 Method of dispersion for assessment of dispersion characteristics using a high-speed impeller mill (Identical) ISO8780-4:1990 Part D4:1991 Method of dispersion for assessment of dispersion characteristics using a bead mill (Identical) ISO8780-5:1990 Part D5:1991 Method of
11、 dispersion for assessment of dispersion characteristics using an automatic muller (Identical) ISO8780-6:1990 Part D6:1991 Method of dispersion for assessment of dispersion characteristics using a triple-roll mill (Identical) ISO8781-1:1990 Part E1:1991 Assessment of dispersion characteristics from
12、the change in tinting strength of coloured pigments (Identical) ISO8781-2:1990 Part E2:1991 Assessment of dispersion characteristics from the change in fineness of grind (Identical) ISO8781-3:1990 Part E3:1991 Assessment of dispersion characteristics from the change in gloss (Identical) Summary of p
13、ages This document comprises a front cover, an inside front cover, pagesi andii, theENISO title page, pages2 to6, an inside back cover and a back 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
14、inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO8780-1 March1995 ICS 87.060.10 Descriptors: Paints, pigments, extenders, dispersibility, dispersing English version Pigments and extenders Methods of dispersion for assessment of dispersion characteristics Part 1: Introductio
15、n (ISO8780-1:1990) Pigments et matieres de charge Mthodes de dispersion pour valuer la dispersibilit Partie1: Introduction (ISO8780-1:1990) Pigmente und Fllstoffe Dispergierverfahren zur Beurteilung des Dispergierverhaltens Teil1: Einleitung (ISO8780-1:1990) This European Standard was approved by CE
16、N on1994-10-17. 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 may
17、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 Centr
18、al Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. CEN European Co
19、mmittee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1995 All rights of reproduction and communication in any form and by any means reserved in all countries to CEN and its members Ref. No. EN ISO8780-1:199
20、5 EENISO8780-1:1995 BSI 04-2000 2 Foreword This European Standard has been taken over by the Technical Committee CEN/TC298, Pigments and extenders, from the work of ISO/TC35, Paints and varnishes, of the International Organization for Standardization (ISO). This European Standard shall be given the
21、status of a national standard, either by publication of an identical text or by endorsement, at the latest by September1995, and conflicting national standards shall be withdrawn at the latest by September1995. According to the CEN/CENELEC Internal Regulations, the following countries are bound to i
22、mplement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. NOTENormative references to international publications are listed in Annex ZA (normative). C
23、ontents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Definitions 3 4 Methods of dispersion and methods of assessment 4 4.1 Preliminary agreements 4 4.2 Binder systems 4 4.3 Methods of dispersion 4 4.4 Methods of assessment 4 5 Precision 4 Annex ZA (normative) Normative references tointernati
24、onal publications with their relevantEuropean publications 5ENISO8780-1:1995 BSI 04-2000 3 1 Scope This part of ISO8780 gives an introduction to the various methods, described in subsequent parts of ISO8780, for dispersing pigments and/or extenders 1)in a particular binder system in order to assess
25、the dispersion characteristics. Methods for assessing the characteristics of the dispersion so produced are described in ISO8781 The various procedures permit comparisons between similar pigments (for example between a test pigment and an agreed reference pigment). The results make it possible to dr
26、aw inferences about the dispersion that may be obtained under manufacturing conditions, but only if the dispersion conditions for the test are appropriate. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this part of I
27、SO8780. 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 ISO8780 are encouraged to investigate the possibility of applying the most recent editions or the standards indicated below. Members of IEC an
28、d ISO maintain registers of currently valid International Standards. ISO8780-2:1990, Pigments and extenders Methods of dispersion for assessment of dispersion characteristics Part 2: Dispersion using an oscillatory shaking machine. ISO8780-3:1990, Pigments and extenders Methods of dispersion for ass
29、essment of dispersion characteristics Part 3: Dispersion using a high-speed impeller mill. ISO8780-4:1990, Pigments and extenders Methods of dispersion for assessment of dispersion characteristics Part 4: Dispersion using a bead mill. ISO8780-5:1990, Pigments and extenders Methods of dispersion for
30、assessment of dispersion characteristics Part 5: Dispersion using an automatic muller. ISO8780-6:1990, Pigments and extenders Methods of dispersion for assessment of dispersion characteristics Part 6: Dispersion using a triple-roll mill. ISO8781-1:1990, Pigments and extenders Methods of assessment o
31、f dispersion characteristics Part 1: Assessment from the change in tinting strength of coloured pigments. ISO8781-2:1990, Pigments and extenders Methods of assessment of dispersion characteristics Part 2: Assessment from the change in fineness of grind. ISO8781-3:1990, Pigments and extenders Methods
32、 of assessment of dispersion characteristics Part 3: Assessment from the change in gloss. 3 Definitions For the purposes of ISO8780 and ISO8781, the following definitions apply. 3.1 mill base mixture of binders, solvents, pigments and additives 3.2 level of dispersion the extent to which pigment par
33、ticles have been separated and stabilized by milling in a binder system under defined conditions 3.3 dispersibility the level of dispersion (see3.2) when it has become constant under the defined conditions NOTE 1The dispersibility of a pigment depends on the binder system in which it is dispersed, t
34、he method of dispersion and the mill base composition. 3.4 ease of dispersion a measure of the rate at which a pigment achieves a given level of dispersion during its milling in a binder system NOTE 2The ease of dispersion may be assessed in terms of, for example, tinting strength (seeISO8781-1), fi
35、neness of grind (seeISO8781-2), gloss (seeISO8781-3). 3.5 aggregate an assemblage of particles so joined together that it cannot be broken down during normal paint or ink-making processes 3.6 agglomerate an assemblage of primary particles, aggregates or a mixture of the two which may be broken down
36、during normal paint or ink-making processes 1) For subsequent reference in all parts of ISO8780 and ISO8781 the word “pigment” only is used.ENISO8780-1:1995 4 BSI 04-2000 4 Methods of dispersion and methods of assessment 4.1 Preliminary agreements Agreement between the interested parties has to be r
37、eached on a) the binder system to be used (see4.2), b) the method or methods of dispersion (see4.3), c) the method or methods of assessment (see4.4), because all of these will affect the results. 4.2 Binder systems In view of the multiplicity of binder systems with widely varying properties that are
38、 encountered in practice, it is not possible to specify in this part of ISO8780 the binder system(s) to be used. However, depending on the method of dispersion selected, advice of a general nature is given in the other parts of ISO8780 concerning the properties of the binder system 4.3 Methods of di
39、spersion Many different types of machinery and milling conditions are used in practice for dispersing pigments. Thus, it is not possible to specify a single method for producing a dispersion for test purposes. The other parts of ISO8780 describe methods of dispersion of pigments under conditions tha
40、t can be related to the manufacturing method. 4.4 Methods of assessment Several methods are available for assessing the dispersion characteristics of a pigment in a binder system. These methods are described in ISO8781. An appropriate method or methods shall be selected for a particular dispersion.
41、5 Precision Statements on precision of the methods of assessment, given in the various parts of ISO8781, are not able to be given due to the dependence of the results on the choice of the binder system and the method of dispersionENISO8780-1:1995 BSI 04-2000 5 Annex ZA (normative) Normative referenc
42、es 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 publications are listed hereafter. For
43、dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). Publication Year Title
44、EN Year ISO8780-2 1990 Pigments and extenders Methods of dispersion forassessment of dispersion characteristics Part2:Dispersion using an oscillatory shaking machine EN ISO8780-2 1995 ISO8780-3 1990 Pigments and extenders Methods of dispersion forassessment of dispersion characteristics Part 3: Disp
45、ersion using a high-speed impeller mill EN ISO8780-3 1995 ISO8780-4 1990 Pigments and extenders Methods of dispersion forassessment of dispersion characteristics Part 4: Dispersion using a bead mill EN ISO8780-4 1995 ISO8780-5 1990 Pigments and extenders Methods of dispersion forassessment of disper
46、sion characteristics Part 5: Dispersion using an automatic muller EN ISO8780-5 1995 ISO8780-6 1990 Pigments and extenders Methods of dispersion forassessment of dispersion characteristics Part 6: Dispersion using a triple-roll mill EN ISO8780-6 1995 ISO8781-1 1990 Pigments and extenders Methods of a
47、ssessment ofdispersion characteristics Part 1: Assessment from the change in tinting strengthofcoloured pigments EN ISO8781-1 1995 ISO8781-2 1990 Pigments and extenders Methods of assessment ofdispersion characteristics Part 2: Assessment fromthe change in fineness of grind EN ISO8781-2 1995 ISO8781
48、-3 1990 Pigments and extenders Methods of assessment ofdispersion characteristics Part 3: Assessment from the change in gloss EN ISO8781-3 19956 blankBSENISO8780-1:1995 BSI 04-2000 Publication(s) referred to Seenational foreword.BS EN ISO 8780-1:1995 BSI 389 Chiswick High Road London W4 4AL BSIBriti
49、shStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions BritishStandards are updated by amendment or revision. Users of BritishStandards should make sure that they possess the latest amendments or editions. It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambi
