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ISO INTERNATIONAL STANDARD. Coating powders Part 13: Particle size analysis by laser diffraction - PDF Free Download
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1 INTERNATIONAL STANDARD ISO First edition Coating powders Part 13: Particle size analysis by laser diffraction Poudres pour revêtement Partie 13: Analyse granulométrique par diffraction laser Reference number ISO :2001(E) ISO 2001
3 Contents Page Foreword...iv 1 Scope Normative references Term and definition Principle Apparatus Sampling Conditions Procedure Calculation of results Expression of results Precision Test report...4 ISO 2001 All rights reserved iii
4 Foreword ISO (the International Organization for Standardization) 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 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 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 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 of the elements of this part of ISO 8130 may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. International Standard ISO was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee SC 9, General test methods for paints and varnishes. ISO 8130 consists of the following parts, under the general title Coating powders: Part 1: Determination of particle size distribution by sieving Part 2: Determination of density by gas comparison pyknometer (referee method) Part 3: Determination of density by liquid displacement pyknometer Part 4: Calculation of lower explosion limit Part 5: Determination of flow properties of a powder/air mixture Part 6: Determination of gel time of thermosetting coating powders at a given temperature Part 7: Determination of loss of mass on stoving Part 8: Assessment of the storage stability of thermosetting powders Part 9: Sampling Part 10: Determination of deposition efficiency Part 11: Inclined-plane flow test Part 12: Determination of comapatibility Part 13: Particle size analysis by laser diffraction iv ISO 2001 All rights reserved
5 INTERNATIONAL STANDARD ISO :2001(E) Coating powders Part 13: Particle size analysis by laser diffraction 1 Scope This part of ISO 8130 is one of a series of standards dealing with the sampling and testing of paints, varnishes and related products. It specifies a method for the determination of the equivalent-sphere particle size distribution of coating powders by laser diffraction and is suitable for discriminating between particles of the size range from 1 µm to 300 µm. This method is applicable only for dry powders. NOTE Most instruments will be capable of discriminating between particles of sizes beyond these limits. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of ISO 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 8130 are encouraged to investigate the possibility 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 Standards. ISO 3270:1984, Paints and varnishes and their raw materials Temperatures and humidities for conditioning and testing ISO :1992, Coating powders Part 9: Sampling ISO :1998, Representation of results of particle size analysis Part 1: Graphical representation ISO :1999, Particle size analysis Laser diffraction methods Part 1: General principles 3 Term and definition For the purposes of this part of ISO 8130, the following term and definition apply. 3.1 obscuration percentage or fraction of incident light that is attenuated due to extinction (scattering and/or absorption) by the particles of a coating powder NOTE A full list of definitions is given in ISO ISO 2001 All rights reserved 1