1、June 2011 Translation by DIN-Sprachendienst.English price group 10No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 8
2、7.040!$rZ“1799055www.din.deDDIN EN ISO 2811-4Paints and varnishes Determination of density Part 4: Pressure cup method (ISO 2811-4:2011)English translation of DIN EN ISO 2811-4:2011-06Beschichtungsstoffe Bestimmung der Dichte Teil 4: Druckzylinder-Verfahren (ISO 2811-4:2011)Englische bersetzung von
3、DIN EN ISO 2811-4:2011-06Peintures et vernis Dtermination de la masse volumique Partie 4: Mthode du cylindre sous pression (ISO 2811-4:2011)Traduction anglaise de DIN EN ISO 2811-4:2011-06SupersedesDIN EN ISO 2811-4:2002-02www.beuth.deDocument comprises pagesIn case of doubt, the German-language ori
4、ginal shall be considered authoritative.05.11 15DIN EN ISO 2811-4:2011-06 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes”, Subcommittee SC 9 “General test methods for paints and varnishes” (Secretariat:
5、BSI, United Kingdom) in collaboration with Technical Committee CEN/TC 139 “Paints and varnishes” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Beschichtungsstoffe und Beschichtungen (Coatings and Coating Materials Standards Committee), W
6、orking Committee NA 002-00-07 AA Allgemeine Prfverfahren fr Beschichtungsstoffe und Beschichtungen. DIN EN ISO 2811 consists of the following parts, under the general title Paints and varnishes Determination of density: Part 1: Pyknometer method Part 2: Immersed body (plummet) method Part 3: Oscilla
7、tion method Part 4: Pressure cup method The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 1513 DIN EN ISO 1513 ISO 3696 DIN ISO 3696 ISO 15528 DIN EN ISO 15528 Re 5 Temperature Examples of relevant German regulations are the “Verification
8、 Ordinance” (Eichordnung) and the “Prepackages Ordinance” (Fertigpackungsverordnung). Amendments This standard differs from DIN EN ISO 2811-4:2002-02 as follows: a) the unit for the density has been changed from grams per millilitre to grams per cubic centimetre, as this is the more common SI unit;
9、b) the determination in duplicate has been changed to a single determination; c) the normative references have been updated. Previous editions DIN EN ISO 2811-4: 2002-02 2 DIN EN ISO 2811-4:2011-06 National Annex NA (informative) Bibliography DIN EN ISO 1513, Paints and varnishes Examination and pre
10、paration of test samples DIN EN ISO 15528, Paints, varnishes and raw materials for paints and varnishes Sampling DIN ISO 3696, Water for analytical laboratory use Specification and test methods 3 DIN EN ISO 2811-4:2011-06 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCH
11、E NORM EN ISO 2811-4 March 2011 ICS 87.040 Supersedes EN ISO 2811-4:2001English Version Paints and varnishes - Determination of density - Part 4: Pressure cup method (ISO 2811-4:2011) Peintures et vernis - Dtermination de la masse volumique - Partie 4: Mthode du cylindre sous pression (ISO 2811-4:20
12、11) Beschichtungsstoffe - Bestimmung der Dichte - Teil 4: Druckzylinder-Verfahren (ISO 2811-4:2011) This European Standard was approved by CEN on 19 February 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standa
13、rd 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-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English,
14、 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 CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulg
15、aria, 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 United Kingdom. EUROPEAN COMMITTEE FOR
16、 STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 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 ISO 2811-4:2011: EForeword 3Contents Page 1 Sc
17、ope 2 Normative references 3 Terms and definitions . 4 Principle . 5 Temperature. 6 Apparatus. 7 Sampling 8 Procedure. 8.1 General . 8.2 Determination 9 Calculation . 10 Precision 10.1 General . 10.2 Repeatability limit, r 10.3 Reproducibility limit, R 11 Test report Annex A (normative) Calibration
18、of pressure cup. Annex B (informative) Temperature variation 4444555555777777911EN ISO 2811-4:2011 (E) DIN EN ISO 2811-4:2011-06 2Foreword This document (EN ISO 2811-4:2011) has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes“ in collaboration with Technical Committee CEN/TC 139
19、 “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 publication of an identical text or by endorsement, at the latest by September 2011, and conflicting national standards shall be withdrawn at the latest
20、 by September 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 not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 2811-4:2001. According to the CEN/
21、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, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lith
22、uania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 2811-4:2011 has been approved by CEN as a EN ISO 2811-4:2011 without any modification. EN ISO 2811-4:2011 (E) DIN EN ISO
23、 2811-4:2011-06 31 Scope This part of ISO 2811 specifies a method for determining the density of paints, varnishes and related products using a pressure cup. The method is suitable for products which are aerated. Emulsion paints, for example, often trap small air bubbles, and these might still be pr
24、esent when the density is measured. It is not, however, suitable for textured paints which contain coarse particles. 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
25、erences, the latest edition of the referenced document (including any amendments) applies. ISO 1513, Paints and varnishes Examination and preparation of test samples ISO 3696, Water for analytical laboratory use Specification and test methods ISO 15528, Paints, varnishes and raw materials for paints
26、 and varnishes Sampling 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 density mass divided by the volume of a portion of a material NOTE This is expressed in grams per cubic centimetre. 4 Principle The product under test is compressed in a
27、cylindrical pressure cup to reduce any error due to air bubbles which have not been eliminated. The density is calculated from the mass of the product and the volume of the cylinder. NOTE Air is more soluble at higher pressures, and it is thought that the main mechanism of bubble removal is by disso
28、lving. Any undissolved bubbles are compressed to a fraction of their original size. EN ISO 2811-4:2011 (E) DIN EN ISO 2811-4:2011-06 45 Temperature The effect of temperature on density is highly significant with respect to filling properties, and varies with the type of product. Carry out the test a
29、t (23,0 0,5) C. NOTE For some purposes, a different temperature, for example (20,0 0,5) C, might be needed. The test sample and pressure cup shall be conditioned to the specified or agreed temperature, and it shall be ensured that the temperature variation does not exceed 0,5 C during testing. 6 App
30、aratus Ordinary laboratory apparatus and glassware, together with the following. 6.1 Pressure cup, comprising a hollow cylinder closed by a screw-driven piston at its lower end and by a pressure-release cap at the top (see Figure 1). A calibration collar on the screw is set to stop further movement
31、of the piston when the volume contained in the cylinder is 100 cm3. The pressure-release cap is designed to let liquid escape when the pressure in the cylinder rises above (1,0 0,1) MPa (10 bar). The apparatus is made of a strong, inert material, for example stainless steel, and it is easily dismant
32、led for cleaning. 6.2 Thermometer, accurate to 0,2 C and graduated at intervals of 0,2 C or finer. 6.3 Temperature-controlled chamber, capable of maintaining the pressure cup and sample at the specified or agreed temperature (see Clause 5). 6.4 Balance, accurate to 10 mg. 7 Sampling Take a represent
33、ative sample of the product under test, as described in ISO 15528. Examine and prepare the sample as described in ISO 1513. 8 Procedure 8.1 General Carry out a single determination on a fresh test sample. 8.2 Determination Weigh the dismantled apparatus, ensure that it is clean and has a trace of gr
34、ease on the moving parts. Fit the piston in its lowest position in the cylinder. Weigh the complete apparatus to the nearest 10 mg (m1). Bring the apparatus and the test sample to the specified or agreed temperature by placing it next to the balance for at least 30 min. Pour the test sample into the
35、 cylinder until it is almost full, and allow sufficient time for the test sample and the cylinder to come to equilibrium at the test temperature. Confirm that the temperature is correct using the thermometer (6.2). Secure the pressure-release cap in position, in accordance with the manufacturers ins
36、tructions. EN ISO 2811-4:2011 (E) DIN EN ISO 2811-4:2011-06 5Key 1 pressure-setting handle 6 piston seal 2 pressure-release device 7 piston 3 end cap 8 calibration-collar stop 4 end seal 9 pressure-application handle 5 cylinder (closed volume 100 cm3) Figure 1 Pressure cup Compress the test sample b
37、y turning the screw. As the pressure reaches about 1 MPa, excess paint is forced out between the cylinder and the cap. Continue turning the screw until the calibration collar stops further movement. NOTE A rag held around the top of the cylinder reduces the mess. It is essential that some excess pai
38、nt is forced out, to confirm that full pressure is achieved. Clean and dry the outside of the filled cup, and weigh it to the nearest 10 mg (m2). Unscrew the piston enough to reduce the pressure. Dismantle, empty and clean the apparatus. EN ISO 2811-4:2011 (E) DIN EN ISO 2811-4:2011-06 6For referenc
39、e tests, and periodically during routine tests, check the calibration of the apparatus, using pure water as the test liquid (see Annex A). 9 Calculation Calculate the density, , of the product, in grams per cubic centimetre, at the test temperature, tT, using Equation (1): 21tmmV= (1) where m1is the
40、 mass, in grams, of the empty pressure cup; m2is the mass, in grams, of the pressure cup filled with the product at the test temperature, tT; Vtis the volume, in cubic centimetres, of the pressure cup at the test temperature, tT, determined in accordance with Annex A. NOTE The result is not correcte
41、d for air buoyancy because the uncorrected value is required by most filling-machine control procedures and the correction (0,001 2 g/cm3) is negligible in relation to the precision of the method. If the test temperature used is not the reference temperature, the density can be calculated using Equa
42、tion (B.2). 10 Precision 10.1 General The precision of the method depends on the characteristics of the product under test. For materials which contain no entrapped air, the values in 10.2 and 10.3 are valid. 10.2 Repeatability limit, r The value below which the absolute difference between two singl
43、e test results, obtained on identical material by one operator in one laboratory using the same equipment within a short interval of time using the standardized test method, may be expected to lie, with a 95 % probability, is 0,005 g/cm3. 10.3 Reproducibility limit, R No data are currently available
44、. 11 Test report The test report shall include at least the following information: a) all details necessary to identify the product tested; b) a reference to this part of ISO 2811, i.e. ISO 2811-4:2011; c) the supplier and serial number or other identification of the pressure cup; d) the test temper
45、ature; EN ISO 2811-4:2011 (E) DIN EN ISO 2811-4:2011-06 7e) the result of the density measurement, in grams per cubic centimetre, rounded to the nearest 0,001 g/cm3; f) any deviation from the test method specified; g) any unusual features (anomalies) observed during the test; h) the date of the test
46、. EN ISO 2811-4:2011 (E) DIN EN ISO 2811-4:2011-06 8Annex A (normative) Calibration of pressure cup A.1 General Put the pressure cup in a container next to the balance in order for it to reach room temperature (approximately 30 min), then weigh using the balance and record this mass (m1). Almost fil
47、l the pressure cup with distilled or deionized water of grade 2 purity, as defined in ISO 3696, which has been previously boiled and then brought to a temperature of not more than 1 C below the test temperature. Secure the pressure-release cap in position, in accordance with the manufacturers instru
48、ctions. Place the pressure cup in the temperature-controlled chamber and wait until the test temperature is reached, then compress the water by turning the screw. Continue until the calibration collar stops further movement, and wipe off any excess water with an absorbent material (cloth or paper),
49、leaving the pressure cup exactly filled. Take the pressure cup out of the chamber and dry it thoroughly on the outside. Avoid additional heating up. Weigh the filled pressure cup immediately (m3). Handle the pressure cup as little as possible to minimize temperature increases. A.2 Calculation of the volume of the pressure cup Calculate the volume of the pressure cup, Vt, in cubic centimetres, at temperature, tT, using Equation (A.1): 31WtmmV= (A.1) where m1is the mass, in grams, of the empty pressure cup; m3is th
