1、BRITISH STANDARDICS 87.040BS EN ISO 8130-10:2010Coating powders Part 10: Determination of deposition efficiency(ISO 8130-10:1998) Incorporating corrigendum April 2011National forewordThis British Standard is the UK implementation of EN ISO 8130-10:2010. It is identical to ISO 8130-10:1998. It supers
2、edes BS 3900-J10:1998 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee STI/10, Methods of test for paints.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all
3、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 8130-10:2010This British Standard, having been prepared under the direction of the Sector Board for Materials and Chemi
4、cals, was published under the authority of the Standards Board and comes into effect on 15 September1998 BSI 2011Amendments/corrigenda issued since publicationDate Comments 30 April 2011 This corigendum renumbers BS 390-J10:198 as BS EN ISO 8130-10:2010ISBN 978 0 580 72117 5EUROPEAN STANDARD NORME E
5、UROPENNE EUROPISCHE NORM EN ISO 8130-10 November 2010 ICS 87.040 English Version Coating powders - Part 10: Determination of deposition efficiency (ISO 8130-10:1998) Poudres pour revtement - Partie 10: Dtermination du rendement dapplication (ISO 8130-10:1998) Pulverlacke - Teil 10: Bestimmung des Ab
6、scheide-Wirkungsgrades (ISO 8130-10:1998) 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 Standard the status of a national standard without any alteration
7、. 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, German). A version in any other language made by translati
8、on 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, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, G
9、ermany, 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 COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORM
10、UNG 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 8130-10:2010: EForeword The text of ISO 8130-10:1998 has been prepared by Technical Committee ISO/TC 35 “Paints and v
11、arnishes” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 8130-10:2010 by Technical Committee CEN/TC 139 “Paints and varnishes” the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by pu
12、blication 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 elements of this document may be the subject of patent rights. CEN and/or CENELEC shall
13、 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 European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denma
14、rk, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 8130-10:1998 has been appro
15、ved by CEN as a EN ISO 8130-10:2010 without any modification. EN ISO 8130-10:2010 (E) BS EN ISO 8130-10:2010iiiBSI2011ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Stand
16、ards 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 ta
17、ke 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 International
18、Standard requires approval by at least75% of the member bodies casting a vote.International Standard ISO8130-10 was prepared by Technical CommitteeISO/TC35, Paints and varnishes, Subcommittee SC9, General test methods for paints and varnishes.ISO8130 consists of the following parts, under the genera
19、l 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: Determina
20、tion 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
21、 of deposition efficiency; Part 11: Inclined-plane flow test; Part 12: Determination of compatibility.Descriptors: Paints, coatings, powdery materials, spraying, tests, determination, efficiency.BS EN ISO 8130-10:2010EN ISO 8130-10:2010 (E)This page deliberately set blank BSI 2011 11 ScopeThis part
22、of ISO8130 is one of a series of standards dealing with the sampling and testing of paints, varnishes and related products.It specifies a method for determining the percentage by mass of a sprayed coating powder which is actually deposited on a standard test target when powder is sprayed at the targ
23、et from a spray gun under standard conditions.The method is applicable to powders applied by corona charging or tribo charging.The method may be used to compare the deposition efficiency of different powders with the same gun or of different guns with the same powder.This method should only be used
24、for comparison when powders or guns are evaluated consecutively, as the influence of the environment and the equipment can vary significantly with time and location.The results are dependent on the following properties of the powder:a) chemical composition;b) density;c) particle size distribution;d)
25、 particle shape;e) flow properties of its mixture in air;f) moisture content;and also on the test conditions, including:g) spray pattern produced by the gun;h) gun air pressure;i) gun voltage;j) gun polarity;k) air humidity.2 Normative referenceThe following standard contains provisions which, throu
26、gh reference in this text, constitute provisions of this part of ISO8130. At the time of publication, the edition indicated was valid. All standards are subject to revision, and parties to agreements based on this part of ISO8130 are encouraged to investigate the possibility of applying the most rec
27、ent editions of the standards indicated below. Members IEC and ISO maintain registers of currently valid International Standards.ISO8130-9:1992, Coating powders Part9:Sampling. 3 DefinitionsFor the purposes of this part of ISO8130, the following definition applies:3.1 deposition efficiencythe propor
28、tion of the mass of powder deposited compared to the mass of powder sprayed, expressed as a percentage4 PrincipleThe method consists of spraying charged powder, at a known flow rate and under known conditions of atmospheric temperature and humidity, at the central one of five similar steel targets e
29、ach wrapped in aluminium foil. The mass of powder deposited on the central target is determined, from which the deposition efficiency is calculated.The operation is performed in an air extraction booth.5 Apparatus5.1 Set of targets, consisting of five steel tubes of external diameter25mm and length5
30、00mm. The tubes have a hole drilled at one end to enable the targets to be hung vertically. Each target shall be properly earthed.5.2 Clean aluminium foil, of commercial quality.5.3 Suspension device, from which the five target tubes can be hung vertically in line at equal distances of95mm to105mm a
31、s measured from the centres.5.4 Vacuum-cleaner bag.5.5 Oven, capable of melting the powder.5.6 Balance, accurate to0,1g.5.7 Timing device, accurate to0,1s.5.8 Powder spray system, consisting of either a corona charge or a tribo charge spray gun suitably mounted in an air extraction booth together wi
32、th a suitable powder collection device.5.9 Non-conductive shield or powder collection device, sufficiently large to prevent powder emitted from the spray gun from impinging on the targets before and after the test, and sufficiently mobile to be moved away for the period of test.6 SamplingTake a repr
33、esentative sample of the product to be tested, as described in ISO8130-9. A sample of2kg is recommended.BS EN ISO 8130-10:2010EN ISO 8130-10:2010 (E)2 BSI 20117 Procedure7.1 Carry out the test in duplicate at a temperature of(23 2)C and a relative humidity between20% and70%.In view of the large volu
34、me of air which can pass through the air extraction booth during the test, it may not be possible to control the temperature and humidity to close limits. Under these circumstances, the range of temperature and humidity shall be stated in the test report.7.2 Wrap the five targets(5.1) with aluminium
35、 foil(5.2) such that the top and bottom edges fold over into the tube to ensure good electrical contact. Weigh, on the balance(5.6) to the nearest0,1g, the foil to be used for the central tube.7.3 Determine the powder flow rate by spraying powder through the powder spray system(5.8) for60s as measur
36、ed by the timing device(5.7) into a pre-weighed vacuum-cleaner bag(5.4). Re-weigh the bag and its contents to0,1g and calculate the powder flow rate in grams per minute.a) When using a corona charge gun, adjust the control of the powder spray device to achieve a powder flow rate of(150 7,5)g/min.NOT
37、EIt is essential that the high voltage is turned off during this operation.b) When using a tribo charge gun, adjust the delivery air pressure to300kPa(=3bar) and measure the powder flow rate as described in the first paragraph of7.3.7.4 Place the suspension device(5.3) with the five target tubes in
38、the spray booth.7.5 Mount and level the spray gun in the extraction booth so that it is aimed at the middle of the central tube at a distance such that the powder will cover approximately60% of the length of the central tube. Record this distance. Ensure the air flow across the booth opening is set
39、between0,4m/s and1,0m/s and that it flows parallel to the spraying direction.It may be difficult to cover60% of the target length when narrow cone applicators are used. Any deviation shall be recorded in the test report.7.6 Place the shield(5.9) between the spray gun and the targets.7.7 Turn on the
40、powder flow and, in the case of the corona charge gun, adjust the potential so that the true gun potential is(60 1)kV at the appropriate polarity.NOTEThe opportunity can be taken at this point to conduct the test at different voltages to enable a more in-depth judgement of the equipment and the powd
41、er to be made.7.8 Remove the shield and allow the powder to spray steadily, without surging, onto the targets for(6,0 0,5)s. At the end of this period, immediately replace the shield between the spray gun and the targets. Turn off the spray gun.7.9 Remove the central target from the suspension devic
42、e carefully so as not to knock off any powder. Place in the oven(5.5) set to a temperature so that the powder coating melts within5 minutes to10minutes.Do not subject the powder coating to the curing process as this could result in losses.7.10 Remove the tube and foil from the oven and allow to cool
43、. Remove the foil from the tube and weigh to the nearest0,1g.NOTETo prevent powder losses, the foil can be removed inside a pre-weighed plastic bag.8 Expression of results8.1 Calculate the deposition efficiency E, expressed as a percentage by mass, using the following equation:where 8.2 If the two r
44、esults differ by not more than5% of the lower value, calculate and report the arithmetical mean. If the difference exceeds5%, carry out a third determination and report the arithmetical mean of all three results.If the difference between the result of the third determination and the mean of the othe
45、r determinations is also greater than5%, state this and the individual results in the test report.Express the results to one decimal place.9 PrecisionExperience shows that the powder flow rate may be determined with a precision of 3%.The deposition efficiency with both corona charge and tribo charge
46、 guns may be determined with a precision of 5%.mp is the mass of powder deposited on the foil, in grams;t is the spray time, in seconds;Pf is the powder flow rate, in grams per minute.E m p 60 100Pft-=BS EN ISO 8130-10:2010EN ISO 8130-10:2010 (E) BSI 310 Test reportThe test report shall contain at l
47、east the following information:a) all details necessary to identify the product tested;b) a reference to this part of ISO8130(ISO8130-10);c) the type of powder;d) the particle size distribution (if available);e) the density of the powder tested (if available);f) a full description of the spraying ap
48、paratus, including1) for a corona charge gun, the true gun voltage or voltages (see note to7.7) and the polarity used,2) for a tribo gun, the powder delivery air pressure,3) a description of the spray nozzle,4) the powder flow rate;g) the distance between the target and the gun nozzle;h) the air flo
49、w rate across the booth opening;i) the atmospheric temperature and relative humidity of the air delivered to the extraction booth (see7.1);j) the results of the test as indicated in8.2;k) any deviation from the test method specified;l) the date of the test.BS EN ISO 8130-10:2010EN ISO 8130-10:2010 (E)2011BSI 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 natio
