1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 16074:2011Paints and varnishes Determination of non-volatile-matter content and spreadingrate of coil coating materialsBS EN 16074:2011 BRITISH STANDARDNational forewordThi
2、s British Standard is the UK implementation of EN 16074:2011.The UK participation in its preparation was entrusted to TechnicalCommittee STI/27, Paint systems for metallic substrates.A list of organizations represented on this committee can beobtained on request to its secretary.This publication doe
3、s not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2011ISBN 978 0 580 70110 8ICS 87.040Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of the
4、Standards Policy and Strategy Committee on 30 June 2011.Amendments issued since publicationDate Text affectedBS EN 16074:2011EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 16074 June 2011 ICS 87.040 English Version Paints and varnishes - Determination of non-volatile-matter content and spreadi
5、ng rate of coil coating materials Peintures et vernis - Dtermination de la teneur en matire non volatile et du rendement superficiel spcifique de revtements pour prlaquage Beschichtungsstoffe - Bestimmung des Gehaltes an nichtflchtigen Anteilen und der Ergiebigkeit von Bandbeschichtungsstoffen This
6、European Standard was approved by CEN on 4 May 2011. 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 co
7、ncerning such national standards may be obtained on application to the CEN-CENELEC 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 translation under the responsibility of a CEN member
8、into its own language and notified to the CEN-CENELEC 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, Germany, Greece, Hungary, Iceland, Ir
9、eland, 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 NORMUNG Management Centre: Avenue Marnix
10、 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16074:2011: EBS EN 16074:2011EN 16074:2011 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Terms and definitions .44 Principle 45 Apparatus
11、and materials .56 Paint sample .57 Test procedure .57.1 Accuracy of weighing 57.2 Procedure for coatings with the exception of PVC plastisols and pure epoxy 57.2.1 Pan method 57.2.2 Drawdown method .67.3 Procedure for PVC plastisol .77.3.1 Pan method 77.3.2 Drawdown method .78 Calculation of spreadi
12、ng rate of the paint .89 Precision .89.1 Repeatability .89.2 Reproducibility .810 Test report 9Bibliography . 10BS EN 16074:2011EN 16074:2011 (E) 3 Foreword This document (EN 16074:2011) has been prepared by Technical Committee CEN/TC 139 “Paints and varnishes”, the secretariat of which is held by D
13、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 December 2011, and conflicting national standards shall be withdrawn at the latest by December 2011. Attention is drawn to the possibility that
14、some of the elements 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 i
15、mplement this European 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,
16、 Switzerland and United Kingdom. BS EN 16074:2011EN 16074:2011 (E) 4 1 Scope The method specifies the gravimetric procedure for determining the non-volatile-matter content (often referred to as dry solid or weight solids) as a percentage by mass of the majority of thermally cured coil coatings and s
17、ubsequently for determining the theoretical spreading rate. The method is not suitable for pure epoxy coil coatings. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated ref
18、erences, the latest edition of the referenced document (including any amendments) applies. EN 13523-0, Coil coated metals Test methods Part 0: General introduction and list of test methods EN ISO 2811-1, Paints and varnishes Determination of density Part 1: Pyknometer method (ISO 2811-1:1997) EN ISO
19、 2811-2, Paints and varnishes Determination of density Part 2: Immersed body (plummet) method (ISO 2811-2:1997) EN ISO 2811-3, Paints and varnishes Determination of density Part 3: Oscillation method (ISO 2811-3:1997) EN ISO 2811-4, Paints and varnishes Determination of density Part 4: Pressure cup
20、method (ISO 2811-4:1997) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 13523-0 and the following apply. 3.1 spreading rate surface area that can be covered by a given quantity of coating material to give a dry film of required thickness ISO 4618:200
21、6 3.2 non-volatile matter NV residue by mass obtained by evaporation under specified conditions ISO 4618:2006 4 Principle The non-volatile-matter content determination is based on the mass of dry residue of a known quantity of wet paint cured in a pan or applied on a metal panel. The spreading rate
22、is subsequently calculated using the liquid paint density and the density of the volatile part. BS EN 16074:2011EN 16074:2011 (E) 5 5 Apparatus and materials 5.1 Analytical balance, capable of weighing to an accuracy of 0,000 1 g. 5.2 Flat-bottomed dish (pan), of metal or glass, inner diameter of ba
23、se (75 5) mm, height of the rim at least 5 mm. Dishes having different diameters may be used by agreement between the interested parties. The actual diameter of the dish shall be within 5 % of the agreed value. 5.3 Mixing tool (e.g. bare wire, paperclip) to facilitate the spreading of the paint. 5.4
24、 Methyl ethyl ketone (MEK) to facilitate the spreading of the paint. 5.5 Oven capable of reaching 200 C with an accuracy of 5 C (for the pan method) and 300 C with an accuracy of 5 C (for the drawdown method). 5.6 200 m thickness adhesive tape, which is easily to remove and leaves no residue. 5.7 Dr
25、awdown bar. 5.8 5 ml plastics pipette. 6 Paint sample The sample shall be homogeneous and representative of the paint to be tested. The sample shall be stored in a closed container until the start of the test. The sample shall be maintained at room temperature for at lease 1 h prior to testing. 7 Te
26、st procedure 7.1 Accuracy of weighing All weighings shall be in grams, to the nearest 0,001 g. 7.2 Procedure for coatings with the exception of PVC plastisols and pure epoxy 7.2.1 Pan method Precondition the pans and mixing tools in an oven at 110 C and store in a dessicator prior to use. For each s
27、ample weigh the pan together with the mixing tool. Record this mass, in grams, as P1. Add a quantity as close as possible to 0,5 g or 2 g ( 5 %) as agreed, accurately weighed, of paint to the pan. Weigh the pan with the paint and mixing tool. Record this mass, in grams, as P2. Calculate the exact ma
28、ss X, in grams, of paint added following Equation (1): 12PPX = (1) BS EN 16074:2011EN 16074:2011 (E) 6 Add approximately 2 ml of methyl ethyl ketone (MEK) to the paint in the pan and spread the paint across the pan, using the mixing tool. Avoid any skin formation, contamination or waste of paint, co
29、ntact of the paint with any other object, e.g. gloves. Evaporate the MEK at room temperature for (30 5) s. Do not remove the mixing tool. Place the pan with paint and mixing tool in an oven at (165 5) C for 1 h 30 min ( 10 s). Remove the pan and allow it to cool to room temperature. Do not water coo
30、l. Weigh again the pan, with dry paint and mixing tool. Record this mass, in grams, as P3. Calculate the non-volatile-matter content Y, in grams, following Equation (2): 13PPY = (2) Calculate the non-volatile-matter content Z, as percentage by mass, following Equation (3): 100=XYZ (3) Repeat the pro
31、cedure twice. The dry solids content as percentage by mass is the average of three individual measurements (three pans may be put in the oven at the same time). 7.2.2 Drawdown method Use an aluminium test panel of typical size 100 mm 70 mm 0,45 mm. The panel shall be flat, uncoated and clean. Degrea
32、se the panel with acetone, dry it in the laboratory oven and let it cool to room temperature. For each sample determine the mass of the uncoated test panel. Record this mass, in grams, as P1. Apply one drop of wet paint from a pipette to the panel and draw down according to the paint specification a
33、nd weigh immediately the panel. Record this mass, in grams, as P2. Cure the panel using the laboratory oven, according to the paint specification. Allow the test panel to cool to room temperature and weigh the panel. Record this mass, in grams, as P3. Do not water cool. Calculate the mass X, in gram
34、s, of paint following Equation (4): 12PPX = (4) Calculate the non-volatile-matter content Y, in grams, following Equation (5): 13PPY = (5) Calculate the non-volatile-matter content Z, as percentage by mass, following Equation (6): 100=XYZ (6) Repeat the procedure twice. BS EN 16074:2011EN 16074:2011
35、 (E) 7 The non-volatile-matter content as percentage by mass shall be expressed as the average of three individual measurements (three panels may be put in the oven at the same time). 7.3 Procedure for PVC plastisol 7.3.1 Pan method Precondition the pans and mixing tools in an oven at 110 C and stor
36、e in a dessicator prior to use. For each test sample weigh the pan together with the mixing tool. Record this mass, in grams, as P1. Add a quantity as close as possible to 0,5 g or 2 g ( 5 %) as agreed, accurately weighed, of paint to the pan. Weigh the pan with the paint and mixing tool. Record thi
37、s mass, in grams, as P2. Calculate the exact mass X, in grams, of paint added following Equation (7): 12PPX = (7) Spread the paint across the pan, using the mixing tool. Avoid any skin formation, contamination or waste of paint, contact of the paint with any other object, e.g. gloves. Place the pan
38、with paint and mixing tool in an oven at (105 5) C for 1 h ( 10 s). Remove the pan and allow it to cool to room temperature. Do not water cool. Weigh again the pan, with dry paint and mixing tool. Record this mass, in grams, as P3. Calculate the non-volatile-matter content Y, in grams, following Equ
39、ation (8): 13PPY = (8) Calculate the non-volatile-matter content Z, as percentage by mass, following Equation (9): 100=XYZ (9) Repeat the procedure twice. The dry solids content as percentage by mass is the average of three individual measurements (three pans may be put in the oven at the same time)
40、. 7.3.2 Drawdown method Use a panel, typically hot dip galvanized steel, size 100 mm 70 mm 0,65 mm. The panel shall be flat, suitably primed and clean. Determine the mass of the primed test panel. Record this mass, in grams, as P1. Place a strip of the adhesive tape along each side of the panel. Pro
41、tect the backing coat side with the tape. Apply the wet paint from a pipette sufficient to cover the coating area to the panel and draw down according to the paint specification. Remove the tapes and weigh immediately the panel. Record this mass, in grams, as P2. BS EN 16074:2011EN 16074:2011 (E) 8
42、Cure the panel using the laboratory oven, according to the paint specification. Allow the test panel to cool to room temperature and weigh the panel. Record this mass, in grams, as P3. Do not water cool. Calculate the mass X, in grams, of paint following Equation (10): 12PPX = (10) Calculate the non
43、-volatile-matter content Y, in grams, following Equation (11): 13PPY = (11) Calculate the non-volatile-matter content Z, as percentage by mass, following Equation (12): 100=XYZ (12) Repeat the procedure twice. The dry solid content as percentage by mass shall be expressed as the average of three ind
44、ividual measurements (three test panels may be dried at the same time in the oven). 8 Calculation of spreading rate of the paint Calculate the spreading rate R of the paint, in square metres per kilogram, to obtain 1 m of dry paint film using Equation (13): XSYXDXR1000 = (13) where X, Y are calculat
45、ed in Clause 7; D is the density (in grams per cubic centimetre) of the liquid paint, determined in accordance with EN ISO 2811-1 to EN ISO 2811-4; S is the density (in grams per cubic centimetre) of the volatile part, also called the average specific solvent density, typically provided by the paint
46、 formulator. 9 Precision 9.1 Repeatability Two results obtained by the same operator on different days should not differ by more than 1,5 %. 9.2 Reproducibility Results obtained by different laboratories for the same batch sample should not differ by more than 3 %. BS EN 16074:2011EN 16074:2011 (E)
47、9 10 Test report The report shall contain at least the following information: a) all details necessary to identify the product tested; b) a reference to this European Standard (i.e. EN 16074); c) the method used to measure density; d) the test method, the paint quantity and the curing conditions; e)
48、 the average non-volatile-matter content as a percentage by mass; f) the spreading rate, the density of the liquid paint and the density of the volatile part; g) any deviation from the method specified; h) any unusual features (anomalies) observed during the test; i) the date of the test. BS EN 1607
49、4:2011EN 16074:2011 (E) 10 Bibliography EN 1396, Aluminium and aluminium alloys Coil coated sheet and strip for general applications Specifications EN 10169, Continuously organic coated (coil coated) steel flat products Technical delivery conditions prEN ISO 3233, Paints and varnishes Determination of percentage volume of non-volatile matter by measuring the density of a dried coating (ISO/DIS 3233:2010) EN ISO 3251, Paints, varnishes and p
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