EN ISO 8130-13-2010 en Coating powders - Part 13 Particle size analysis by laser diffraction《粉末涂料 采用激光衍射的粒度分析》.pdf

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1、BRITISH STANDARDBS EN ISO8130-13:2010Part 13: Particle size analysis by laser diffractionICS 87.0NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWCoating powders 40National forewordThis British Standard is the UK implementation of EN ISO 8130-13:2010. It is identical to ISO 8130

2、-13:2001. It supersedes BS 3900-J13:2001, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee STI/10, Test methods for paints.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purpor

3、t to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.BS EN ISO 8130-13:2010This British Standard, having been prepared under the direction of the Sector Policy and S

4、trategy Committee for Materials and Chemicals, was published under the authority of the Standards Policy and Strategy Committee on 25 October 2001 BSI 2011Amendments/corrigenda issued since publicationDate Comments 28 February 2011 This corrigendum renumbers BS 3900-J13:2001 as BS EN ISO 8130-13:201

5、0ISBN 978 0 580 72120 5EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8130-13 November 2010 ICS 87.040 English Version Coating powders - Part 13: Particle size analysis by laser diffraction (ISO 8130-13:2001) Poudres pour revtement - Partie 13: Analyse granulomtrique par diffraction laser

6、(ISO 8130-13:2001) Pulverlacke - Teil 13: Teilchengrenanalyse durch Laserbeugung (ISO 8130-13:2001) This European Standard was approved by CEN on 16 October 2010. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standar

7、d 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 CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French,

8、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 CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cy

9、prus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION

10、COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 8130-13:2010: EEN ISO 8130-13:2010 (E) Foreword The text of

11、 ISO 8130-13:2001 has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 8130-13:2010 by Technical Committee CEN/TC 139 “Paints and varnishes” the secretariat of which is held by DIN. Thi

12、s 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 May 2011, and conflicting national standards shall be withdrawn at the latest by May 2011. Attention is drawn to the possibility that some of the eleme

13、nts of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this Eur

14、opean Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and

15、the United Kingdom. Endorsement notice The text of ISO 8130-13:2001 has been approved by CEN as a EN ISO 8130-13:2010 without any modification. BS EN ISO 8130-13:2010Contents Page 1 Scope1 2 Normative references1 3 Term and definition.1 4 Principle2 5 Apparatus.2 6 Sampling.2 7 Conditions2 8 Procedu

16、re.2 9 Calculation of results3 10 Expression of results3 11 Precision.3 12 Test report4 BS EN ISO 8130-13:2010EN ISO 8130-13:2010 (E) iiiThis page deliberately set blankINTERNATIONAL STANDARD ENISO 8130-13:2010(E)Coating powders Part 13: Particle size analysis by laser diffraction 1 Scope This part

17、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 betw

18、een particles of the size range from 1 m to 300 m. 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 refere

19、nce in this text, constitute provisions of this part of ISO 8130. 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

20、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 Temp

21、eratures and humidities for conditioning and testing ISO 8130-9:1992, Coating powders Part 9: Sampling ISO 9276-1:1998, Representation of results of particle size analysis Part 1: Graphical representation ISO 13320-1:1999, Particle size analysis Laser diffraction methods Part 1: General principles 3

22、 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 i

23、s given in ISO 13320-1. 1BS EN ISO 8130-13:20104 Principle A representative sample of the coating powder, dispersed at an adequate concentration in air, is passed through the beam of a monochromatic laser source. The light scattered by the particles at various angles is measured by a multi-element d

24、etector and numerical values relating to the scattering pattern are recorded for subsequent analysis. These numerical scattering values are then transformed using an appropriate optical model and mathematical procedure to yield the proportion by volume of the sample in each size class forming a sphe

25、re-equivalent volumetric particle size distribution. 5 Apparatus NOTE A description of laser analyser apparatus is given in ISO 13320-1. 5.1 Laser diffraction particle size analyser, with a minimum size range of 1 m to 300 m. 5.2 Dry-powder feeder, to be connected to the laser apparatus. This shall

26、incorporate suitable means of delivering a constant stream of powder, free from agglomerates, into the analyser. 5.3 Compressed-air supply, delivering sufficient pressure as recommended by the instrument supplier. The air shall be dry, free from oil and filtered to 4 m. 5.4 Air extraction system, ca

27、pable of extracting air at the rate required by the instrument manufacturer. Certain domestic vacuum cleaners may be found to be suitable. The vacuum unit shall be located such that the output of hot air does not reach the measurement zone. Ensure that all particle-transporting devices, such as the

28、dry-powder feeder, vacuum inlets and hoses, are electrically earthed to prevent electrostatic discharges. 5.5 Computer and software, suitable for analysing the data from the measurement device. The computer may be connected to a suitable printer. Any special requirements for the specifications of co

29、mputer hardware will normally be advised by the instrument manufacturer. 5.6 Spatula or spoon. 6 Sampling Prepare a representative sample of the powder to be tested, as described in ISO 8130-9. A quantity between 3 g and 5 g is normally sufficient for each determination. 7 Conditions Measurements sh

30、all be made under standard conditions as specified in ISO 3270. The period of conditioning shall be not less than 30 min. 8 Procedure NOTE 1 It is recommended that the operator be familiar with the procedures detailed in ISO 13320-1. WARNING The radiation from instruments equipped with a low-power l

31、aser can cause permanent eye damage. Never look in the direct path of the laser beam or its reflections. Avoid cutting the laser beam with reflecting surfaces. Observe the local laser radiation safety regulations. Carry out the measurements in duplicate. 2BS EN ISO 8130-13:2010EN ISO 8130-13:2010(E)

32、 Install and adjust the apparatus in accordance with the manufacturers instructions for powder of the expected particle size range. When the system is switched on at the start of a series of determinations, allow at least 30 min to elapse to enable the equipment to stabilize, referring to the manufa

33、cturers instructions as necessary. Check that the laser beam is centrally aligned on the detector, and adjust if necessary. NOTE 2 With most instruments alignment will take place automatically, but it may be necessary for it to be carried out by a service engineer. Using the spatula or spoon (5.6),

34、add the powder to the powder feeder (5.2) and adjust the air flow as recommended by the instrument supplier. Make a background measurement (i.e. in the absence of powder) to determine the combined effect of electrical “noise” and contamination in the system. This measurement needs to be subtracted f

35、rom the sample measurement. NOTE 3 This procedure is normally undertaken automatically by the instruments computer. Start the powder feeder in accordance with the instructions such that the level of obscuration (see 3.1) lies between 1 % and 15 %, preferably between 7 % and 10 %. Allow the powder sa

36、mple to pass through the air cell, using a brush to remove any fines remaining in the feed tray. After the determination, the data are displayed on the computer visual display unit (VDU). Ensure the instrument is thoroughly cleaned between determinations. At the end of a measuring session, the compu

37、ter software may be closed down and the device turned off. 9 Calculation of results As noted above, the computer software, associated with the particle size analyser, will undertake the calculations and allow the results to be displayed (and, if required, printed) in both tabular and graphical form.

38、 NOTE In general, the Fraunhofer theory will be applied (see ISO 13320-1) and details of refractive indices will not be required. However, in the case of unpigmented coating powders it may be necessary to use Mie theory, in which case refractive indices will be required. If the results of the two de

39、terminations for any size class differ by not more than 1 %, calculate the arithmetic mean. Otherwise, undertake a third determination and report the arithmetic mean of all three measurements, noting this in the test report. 10 Expression of results Express the results in accordance with ISO 9276-1.

40、 11 Precision Experience shows that repeatability within 1 m in the range up to 100 m particle diameter may be expected. 3BS EN ISO 8130-13:2010EN ISO 8130-13:2010 (E) 12 Test report The test report shall include at least the following information: a) all details necessary to identify the product te

41、sted; b) a reference to this part of ISO 8130 (ISO 8130-13); c) a full description of the equipment used, including: 1) a description of the powder feeder, including the name of the manufacturer and type of equipment, 2) the feeding rate, 3) the wavelength of the laser beam, 4) the number of detecto

42、r elements, 5) the focal length of the lens, 6) the scattering-angle range, 7) the obscuration value, 8) the date of the most recent alignment and calibration date; d) the results of the determination in accordance with ISO 9276-1 and clause 9; e) any deviations from the test method; f) the date of

43、the test. 4BS EN ISO 8130-13:2010EN ISO 8130-13:201 (E) 0This page deliberately set blankBSI GroupHeadquarters 389 Chiswick High Road, London, W4 4AL, UK Tel +44 (0)20 8996 9001 Fax +44 (0)20 8996 7001 standardsBSI - British Standards InstitutionBSI is the independent national body responsible for

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