DIN EN ISO 8130-6-2011 Coating powders - Part 6 Determination of gel time of thermosetting coating powders at a given temperature (ISO 8130-6 1992 including Amd 1 1998) German vers.pdf

1、February 2011 Translation by DIN-Sprachendienst.English price group 8No 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).IC

2、S 87.040!$mP.“1744511www.din.deDDIN EN ISO 8130-6Coating powders Part 6: Determination of gel time of thermosetting coating powders at agiven temperature (ISO 8130-6:1992, including Amd. 1:1998)English translation of DIN EN ISO 8130-6:2011-02Pulverlacke Teil 6: Bestimmung der Gelzeit von wrmehrtende

3、n Pulverlacken bei einer gegebenenTemperatur (ISO 8130-6:1992, einschlielich Amd. 1:1998)Englische bersetzung von DIN EN ISO 8130-6:2011-02Poudres pour revtement Partie 6: Dtermination du temps de glification une temprature donne de poudresthermodurcissables (ISO 8130-6:1992, Amd. 1:1998 inclus)Trad

4、uction anglaise de DIN EN ISO 8130-6:2011-02SupersedesDIN ISO 8130-6:2005-03www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.1104.11 DIN EN ISO 8130-6:2011-02 2 A comma is used as the decimal marker. National foreword This standard

5、has been prepared by Technical Committee ISO/TC 35 “Paints and varnishes”, Subcommittee SC 9 “General test methods for paints and varnishes” (Secretariat: BSI, United Kingdom) in collaboration with Technical Committee CEN/TC 139 “Paints and varnishes” (Secretariat: DIN, Germany). The responsible Ger

6、man body involved in its preparation was the Normenausschuss Beschichtungsstoffe und Beschichtungen (Coatings and Coating Materials Standards Committee), Working Committee NA 002-00-07 AA Allgemeine Prfverfahren fr Beschichtungsstoffe und Beschichtungen. DIN EN ISO 8130 consists of the following par

7、ts, under the general 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 P

8、art 5: Determination 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: De

9、termination of deposition efficiency Part 11: Inclined-plane flow test Part 12: Determination of compatibility Part 13: Particle size analysis by laser diffraction Part 14: Terminology The DIN Standard corresponding to the International Standard referred to in this document is as follows: ISO 8130-9

10、 DIN EN ISO 8130-9 Amendments This standard differs from DIN ISO 8130-6:2005-03 as follows: a) the status of the standard has been changed to that of a European Standard. DIN EN ISO 8130-6:2011-02 3 Previous editions DIN ISO 8130-6: 2005-03 National Annex NA (informative) Bibliography DIN EN ISO 813

11、0-9, Coating powders Part 9: Sampling DIN EN ISO 8130-6:2011-02 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8130-6 November 2010 ICS 87.040 English Version Coating powders Part 6: Determination of gel time of thermosetting coating powders at a given te

12、mperature (ISO 8130-6:1992, including Amd. 1:1998) Poudres pour revtement Partie 6: Dtermination du temps de glification une temprature donne de poudres thermodurcissables (ISO 8130-6:1992, Amd. 1:1998 inclus) Pulverlacke Teil 6: Bestimmung der Gelzeit von wrmehrtenden Pulverlacken bei einer gegeben

13、en Temperatur (ISO 8130-6:1992, einschlielich Amd. 1:1998)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 withou

14、t 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, German). A version in any other language m

15、ade 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, Cyprus, Czech Republic, Denmark, Estonia, Fi

16、nland, 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 COMIT EUROPEN DE NORMALISATION EUROPISCHES

17、 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 8130-6:2010: EDIN EN ISO 8130-6:2011-02 EN ISO 8130-6:2010 (E) 2 Contents Page Foreword3 1 Scope 4 2

18、Normative reference 4 3 Definition 4 4 Principle4 5 Materials .4 6 Apparatus .4 7 Sampling.5 8 Procedure .5 9 Precision.6 9.1 Repeatability, r .6 9.2 Reproducibility, R.6 10 Test report 7 DIN EN ISO 8130-6:2011-02 EN ISO 8130-6:2010 (E) 3 Foreword The text of ISO 8130-6:1992, including Amd. 1:1998 h

19、as 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 8130-6:2010 by Technical Committee CEN/TC 139 “Paints and varnishes” the secretariat of which is held by DIN. This European Standard

20、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 elements of this document

21、 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 European Standard: Aust

22、ria, 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 the United Kingdom.

23、Endorsement notice The text of ISO 8130-6:1992, including Amd. 1:1998 has been approved by CEN as a EN ISO 8130-6:2010 without any modification. DIN EN ISO 8130-6:2011-02 EN ISO 8130-6:2010 (E) 4 1 Scope This part of ISO 8130 specifies a method for the determination of the time for a thermosetting c

24、oating powder to gel at a specified temperature, normally 180 C. NOTE 1 The determination of the gel time is a very simple method for the characterization and quality control of coating powders. However, the gel time determined by this method is not directly related to the time for a coating powder

25、to cure in practical applications. The method is not applicable to coating powders with ultra-short gel times (less than 15 s). 2 Normative reference The following standard contains provisions which, through reference in this text, constitute provisions of this part of ISO 8130. At the time of publi

26、cation, the edition indicated was valid. All standards are subject to revision, and parties to agreements based an this part of ISO 8130 are encouraged to investigate the possibility of applying the most recent edition of the standard indicated below. Members of IEC and ISO maintain registers of cur

27、rently valid International Standards. ISO 8130-9:1992, Coating powders Part 9: Sampling 3 Definition For the purposes of this part of ISO 8130, the following definition applies. 3.1 gel time the time taken for a specified volume of coating powder to become non-deformable, under specified conditions,

28、 after melting 4 Principle A test portion of a specified volume of coating powder is heated to a specified temperature in a depression in a heating block. The time at which threads can no longer be pulled from the molten product is determined. 5 Materials 5.1 Test substances of known melting point f

29、or checking the temperature of the heating block (6.1). NOTE 2 For a test temperature of 180 C, D-camphor is a suitable material. 5.2 Release agent, such as an aerosol dispersion of polytetrafluoroethylene. 6 Apparatus 6.1 Heating block, consisting of an electrically heated steel block of sufficient

30、 mass to maintain temperature stability, i.e. to ensure that the temperature selected within the range of 130 C to 230 C does not vary by more than 1 C. The temperature shall be controlled by means of a thermoregulator. DIN EN ISO 8130-6:2011-02 EN ISO 8130-6:2010 (E) 5 The block shall have a spheri

31、cal, polished depression, with a diameter of (16 0,1) mm and a radius of curvature of (10 0,1) mm in the centre of the top surface to contain the test portion. A hole of sufficient diameter shall be situated to take a temperature-measuring device (6.2) near the centre of one of the sides of the heat

32、ing block, just below the top surface, extending horizontally to near the centre of the block and ending within 2 mm of the central depression. NOTE 3 An example of a suitable heating block is shown in Figure 1. The dimensions indicated are given for illustrative purposes only. NOTE 4 Thermal insula

33、tion of the heating block is desirable. For the heating block shown in Figure 1, a heating device rated at 500 W has been found suitable. 6.2 Temperature-measuring device, of sufficient range, reading to 1 C. 6.3 Measuring spoon, of capacity (0,25 0,01) ml, for transferring the test portion to the d

34、epression in the heating block. 6.4 Timer, accurate to 1 s. 6.5 Stirrer, of very low heat capacity and of suitable size. NOTE 5 For the heating block shown in Figure 1, a stirring needle with a round pin-head, diameter 1 mm, and attached to an insulating handle may be used. A small wooden stirrer ha

35、s also been found to be satisfactory. 6.6 Scraper, made of a material softer than that of the heating block, for removing the test material from the heating block without scratching its surface. 7 Sampling Take a representative sample of the product to be tested, as described in ISO 8130-9. 8 Proced

36、ure Carry out the determination in duplicate. Carry out the test at (180 1) C unless otherwise specified or otherwise agreed between the interested parties. Place the heating block (6.1) in an atmosphere free from draughts. Raise the temperature of the heating block to the specified temperature and

37、allow it to stabilize for at least 10 min. NOTE 6 A check that the surface temperature of the heating block has reached the required temperature may be made by placing on it a small portion of material (5.1) that melts at the required temperature. DIN EN ISO 8130-6:2011-02 EN ISO 8130-6:2010 (E) 6 D

38、imensions in millimetres By means of the measuring spoon (6.3), transfer a test portion of 0,25 ml of the product under test to the depression in the heating block and immediately after all the powder has melted start the timer (6.4) and commence stirring the material. Stir the molten material in sm

39、all circular movements with the stirrer (6.5). When thickening starts, whilst maintaining the overall stirring action, lift the stirring device every 2 s to 3 s to about 10 mm away from the molten material. When the threads thus formed become brittle such that they break and can no longer be drawn f

40、rom the molten material, stop the timer and record the time to the nearest 1 s. This is the gel time. lmmediately scrape the test material from the heating block, using the scraper (6.6) and taking care not to damage the surface. Repeat the determination with a fresh test portion. If the two results

41、 differ by less than 5 % of the lower value, calculate and report the arithmetic mean. If the difference between the two results exceeds 5 %, carry out a third determination and calculate and report the arithmetric mean of all three results to the nearest 1 s. If the difference between the result of

42、 the third determination and those of the other determinations is also greater than 5 %, state this and the individual results in the test report. 9 Precision 9.1 Repeatability, r The value below which the absolute difference between two single test results obtained on identical material by one oper

43、ator in one laboratory within a short interval of time using the standardized test method may be expected to lie with a 95 % probability is 5 %. 9.2 Reproducibility, R Due to the nature of the material, reproducibility cannot be determined. Figure 1 Heating block (example) If required, treat the dep

44、ression and surrounding top surface of the heating block with the release agent (5.2) in accordance with the manufacturers instructions. DIN EN ISO 8130-6:2011-02 EN ISO 8130-6:2010 (E) 7 10 Test report The test report shall contain at least the following information: a) all details necessary to identify the product tested; b) a reference to this part of ISO 8130 (ISO 8130-6); c) the test temperature; d) whether the heating block was treated with a release agent; e) the result of the test as indicated in clause 8; f) any deviation from the test method specified; g) the date of the test.