1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 9117-4:2012Paints and varnishes Drying testsPart 4: Test using a mechanical recorder (ISO 9117-4:2012)BS EN ISO 9117-4:2012 BRITISH STANDARDNational forewordThis Britis
2、h Standard is the UK implementation of EN ISO9117-4:2012.The UK participation in its preparation was entrusted to TechnicalCommittee STI/10, Test methods for paints.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to i
3、nclude all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 69316 8ICS 87.040Compliance with a British Standard cannot confer immunity fromlegal obligations.This Briti
4、sh Standard was published under the authority of theStandards Policy and Strategy Committee on 31 October 2012.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 9117-4 August 2012 ICS 87.040 English Version Paints and varnishes - Drying tes
5、ts - Part 4: Test using a mechanical recorder (ISO 9117-4:2012) Peintures et vernis - Essais de schage - Partie 4: Essai laide dun enregistreur mcanique (ISO 9117-4:2012) Beschichtungsstoffe - Trocknungsprfungen - Teil 4: Prfung mit einem mechanischen Rekorder (ISO 9117-4:2012) This European Standar
6、d was approved by CEN on 14 August 2012. 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 concerning suc
7、h 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 into its own
8、 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, Former Yugoslav Republic of Macedonia, France, Germany, G
9、reece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMU
10、NG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 9117-4:2012: EBS EN ISO 9117-4:2012EN ISO 9117-4:2012 (E) 3 Foreword This document (EN ISO 9117-4:2012) has been prepa
11、red by Technical Committee ISO/TC 35 “Paints and varnishes“ in collaboration with 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 publication of an identical text or by e
12、ndorsement, at the latest by February 2013, and conflicting national standards shall be withdrawn at the latest by February 2013. 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
13、 identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former
14、 Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 9117-4:2
15、012 has been approved by CEN as a EN ISO 9117-4:2012 without any modification. BS EN ISO 9117-4:2012ISO 9117-4:2012(E) ISO 2012 All rights reserved iiiContents PageForeword ivIntroduction v1 Scope 12 Normative references . 13 Principle . 13.1 Straight-line recorder . 13.2 Circular recorder . 14 Samp
16、ling 15 Test panels 25.1 Substrate . 25.2 Coating of test panels 26 Test conditions and number of tests . 27 Method A Using a straight-line drying-time recorder . 27.1 Apparatus 27.2 Procedure 28 Method B Using a circular drying-time recorder . 38.1 Apparatus 38.2 Procedure 39 Classification of dryi
17、ng stages 410 Precision 511 Test report . 5BS EN ISO 9117-4:2012ISO 9117-4:2012(E)ForewordISO (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
18、 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 collaborate
19、s 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 2.The main task of technical committees is to prepare International Standards.
20、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 do
21、cument may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights.ISO 9117-4 was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee SC 9, General test methods for paints and varnishes.ISO 9117 consists of the follow
22、ing parts, under the general title Paints and varnishes Drying tests: Part 1: Determination of through-dry state and through-dry time Part 2: Pressure test for stackability Part 3: Surface-drying test using ballotini Part 4: Test using a mechanical recorder Part 5: Modified Bandow-Wolff test Part 6:
23、 Print-free testiv ISO 2012 All rights reservedBS EN ISO 9117-4:2012ISO 9117-4:2012(E)IntroductionThe drying time of a coating is significant in determining when a freshly painted room, floor or stairway may be put back in use or when a freshly coated article may be handled or packaged. Slow drying
24、might result in dirt pick-up or, on an exterior surface, moisture might cause a non-uniform appearance.The test described in this part of ISO 9117 is used to determine, using a mechanical recorder, the various stages of drying or curing in the dry-film formation of organic coatings for the purpose o
25、f comparing types of coating or ingredient changes, or both. To evaluate the stages of drying in a quantitative manner, the use of the recorder under controlled environmental conditions is strongly recommended. The use of a mechanical recorder also offers a method of determining the drying character
26、istics of coatings that cannot be ascertained within the standard 8 h working day.This test is useful in comparing the behaviour, during drying, of coatings of the same generic type. Determination of actual drying times should be conducted following procedures specified e.g. in ISO 9117-1 or ISO 911
27、7-3. ISO 2012 All rights reserved vBS EN ISO 9117-4:2012BS EN ISO 9117-4:2012Paints and varnishes Drying tests Part 4: Test using a mechanical recorder1 ScopeThis part of ISO 9117 specifies a test for determining the times taken to reach various stages of drying of organic coatings, using a mechanic
28、al straight-line or circular drying-time recorder. The use of a mechanical recorder is valuable in comparing the drying behaviour of coatings of the same generic type, when one coating might form a gel at a faster rate than another or might resist scratching better than another. The test is intended
29、 to simulate the conditions which exist when painted articles are stacked upon each other.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition
30、of the referenced document (including any amendments) applies.ISO 1513, Paints and varnishes Examination and preparation of test samplesISO 1514, Paints and varnishes Standard panels for testingISO 2808, Paints and varnishes Determination of film thicknessISO 3270, Paintsandvarnishesandtheirrawmater
31、ials TemperaturesandhumiditiesforconditioningandtestingISO 15528, Paints, varnishes and raw materials for paints and varnishes Sampling3 Principle3.1 Straight-line recorderIn method A (using a straight-line recorder), the coating is applied to glass strips measuring at least 300 mm 25 mm. The strips
32、 are positioned so that a stylus can be lowered into the wet film on each. The styluses move along the glass strips at a selected constant speed.3.2 Circular recorderIn method B (using a circular recorder), the coating is applied to a glass plate measuring approximately 150 mm 150 mm. The drying-tim
33、e recorder is immediately placed on the wet film and a stylus lowered into the film and moved in a 360 arc at a selected constant speed.4 SamplingTake a representative sample of the product to be tested (or of each product in the case of a multi-coat system), as described in ISO 15528.Examine and pr
34、epare each sample for testing, as described in ISO 1513.INTERNATIONAL STANDARD ISO 9117-4:2012(E) ISO 2012 All rights reserved 1BS EN ISO 9117-4:2012ISO 9117-4:2012(E)5 Test panels5.1 SubstrateUse clean glass panels as described in ISO 1514.5.2 Coating of test panelsPrepare each test panel in accord
35、ance with ISO 1514 and then coat it by the specified method with the product or system under test.The coating method and dry-film thickness shall be as specified by the manufacturer or as agreed between interested parties, and shall be included in the test report Clause 11, item c) 2).6 Test conditi
36、ons and number of testsCarry out the procedure at least in duplicate at (23 2) C and ambient relative humidity, unless otherwise agreed (see also ISO 3270).7 Method A Using a straight-line drying-time recorder7.1 Apparatus7.1.1 Straight-line drying-time recorder, fitted with multiple styluses 2 mm i
37、n diameter, with rounded tips, which are drawn over multiple coated glass panels, typically measuring 300 mm 25 mm, disposed parallel to each other. The stylus arm generally comes with 5 g weights that may be added to apply greater pressure on the styluses and thus record the through-dry time. Other
38、 weights may be used as agreed between the interested parties. The speed can be varied to cover drying periods of 6 h, 12 h and 24 h.7.1.2 Magnifying glass.7.2 ProcedureApply the coating to the glass strips. Record the time of application. Immediately attach the glass strips to the recorder and lowe
39、r the stylus arm so that it is at the starting position. Lower the styluses gently into position on their respective strips. Before use, always ensure that the tips of the styluses are clean and free from dried paint from previous tests. Switch on the motor and the styluses will be drawn along their
40、 respective strips by the stylus arm.Always mark the point on the glass strip where the stylus is first lowered into the wet film by use of a marker pen or a similar method. This will aid in measuring times along the strip during the assessment stage, as it is often not obvious at what point the tra
41、ck starts since paint flows back into the groove.After drying, evaluate the glass strips by reference to Figure 1 to determine the time at which the stage of interest was reached, and record this time. The use of a magnifying glass will enhance the evaluation. The drying time is the quotient of the
42、distance covered at each stage and the speed of the stylus.Determine the thickness, in micrometres, of the dried coating by one of the procedures specified in ISO 2808.2 ISO 2012 All rights reservedBS EN ISO 9117-4:2012ISO 9117-4:2012(E)Key1 start2 set-to-touch time3 tack-free time4 hard-dry time5 t
43、hrough-dry timeFigure 1 Stages of drying using a straight-line drying-time recorder8 Method B Using a circular drying-time recorder8.1 Apparatus8.1.1 Circular drying-time recorder, with a motor that is mounted on a rubber-shod tripod. The motor shaft is oriented vertically, with a pivoting-arm assem
44、bly attached to it to operate a counterpoised vertical stylus, made of PTFE, with an end approximately 10 mm in diameter. The PTFE stylus, typically weighted with a load of 12 g, scribes an arc in the drying film. The arm assembly includes a counterweight to permit adjustment of the pressure on the
45、needle to near zero. The stylus is moved in a circular arc at a selected constant speed. Recorders are available to cover various drying times, such as 1 h, 6 h, 12 h or 24 h.8.1.2 Transparent template, with scale graduations corresponding to the particular motor speed, for timing the various stages
46、 of drying revealed by differences observed in the scribed pattern.8.1.3 Magnifying glass.8.2 ProcedurePrepare test panels as specified in Clause 5. Glass plates measuring about 150 mm 150 mm are used for the determination of drying times with this type of recorder.Apply the coating to a glass plate
47、. Record the time of application. Immediately attach the glass plate to the recorder, and lower the stylus gently into position on the panel. Before use, always ensure that the tip of the stylus is clean and free from dried paint from previous tests. Switch on the motor so the stylus is drawn round
48、the glass plate.Always mark the point where the stylus is first lowered into the wet film by use of a marker pen or a similar method. This will aid in measuring times along the track during the assessment stage, as it is often not obvious at what point the track starts since paint flows back into th
49、e groove.After drying, use the transparent template to evaluate the glass plate by reference to Figure 2 to determine the time at which the stage of interest was reached, and record this time. The use of a magnifying glass will enhance the evaluation. The drying time is the quotient of the distance covered at each stage and the speed of the stylus.Determine the thickness, in micrometres, of the dried coating by one of the procedures specified in ISO 2808. ISO 2012 All rights reserved 3BS EN ISO 9117-4:2012ISO
