1、July 2011 Translation by DIN-Sprachendienst.English price group 6No 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 83
2、.180!$sA“1803088www.din.deDDIN EN 1239Adhesives Freeze-thaw stabilityEnglish translation of DIN EN 1239:2011-07Klebstoffe Gefrier-Auftau-StabilittEnglische bersetzung von DIN EN 1239:2011-07Adhsifs Stabilit au gel-deglTraduction anglaise de DIN EN 1239:2011-07SupersedesDIN EN 1239:1998-05www.beuth.d
3、eDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.8 06.11 DIN EN 1239:2011-07 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC 193 “Adhesives” (Secretariat: AENOR, Spain).
4、The responsible German bodies involved in its preparation was the Normenausschuss Kunststoffe (Plastics Standards Committee), Working Committee NA 054-04-06 AA Klebstoffe Terminologie; physikalisch-chemische Prfungen. Amendments This standard differs from DIN EN 1239:1998-05 as follows: a) the forew
5、ord now includes a “Safety Statement” and an “Environmental Statement”; b) Clause 2 “Normative references” has been updated; c) Clause 5 “Safety” has been deleted; d) the standard has been editorially revised. Previous editions DIN EN 1239: 1998-05 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM E
6、N 1239 April 2011 ICS 83.180 Supersedes EN 1239:1998English Version Adhesives - Freeze-thaw stability Adhsifs - Stabilit au gel-dgel Klebstoffe - Gefrier-Auftau-Stabilitt This European Standard was approved by CEN on 10 March 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regula
7、tions 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 such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member
8、. 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 language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN
9、 members are the national standards bodies of 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, S
10、pain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR 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
11、 Members. Ref. No. EN 1239:2011: EEN 1239:2011 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Terms and definitions .44 Principle 45 Apparatus .46 Sampling, examination and preparation of samples .57 Procedure .58 Expression of results and classification .59 Test report 6DIN EN 123
12、9:2011-07 EN 1239:2011 (E) 3 Foreword This document (EN 1239:2011) has been prepared by Technical Committee CEN/TC 193 “Adhesives”, the secretariat of which is held by AENOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by end
13、orsement, at the latest by October 2011, and conflicting national standards shall be withdrawn at the latest by October 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 ide
14、ntifying any or all such patent rights. This document supersedes EN 1239:1998. The main modifications regarding the previous version are in the Normative References and 8.1. SAFETY STATEMENT Persons using this document should be familiar with the normal laboratory practice, if applicable. This docum
15、ent does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user to establish appropriate safety and health practices and to ensure compliance with any regulatory conditions. ENVIRONMENTAL STATEMENT It is understood that some of the ma
16、terial permitted in this standard may have negative environmental impact. As technological advantages lead to acceptable alternatives for these materials, they will be eliminated from this standard to the extent possible. At the end of the test, the user of the standard should take care to carry out
17、 an appropriate disposal of the wastes, according to local regulation. 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, Denmar
18、k, 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. DIN EN 1239:2011-07 EN 1239:2011 (E) 4 1 Scope This European St
19、andard specifies a method for the evaluation of the freeze-thaw stability of adhesives, their basic constituents and related products. This test has no significance if the sample does not freeze under the test conditions. 2 Normative references The following referenced documents are indispensable fo
20、r the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 923:2005+A1:2008, Adhesives Terms and definitions EN 1067, Adhesives Examination and preparation of s
21、amples for testing EN 12092, Adhesives Determination of viscosity EN ISO 15605, Adhesives Sampling (ISO 15605:2000) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 923:2005+A1:2008 apply. 4 Principle Measure the viscosity of a sample of the adhesive b
22、eing tested by placing it in a test chamber for 16 h at a selected temperature of - 5 C, - 10 C, - 15 C or - 20 C, then holding it for 8 h at (23 1) C and finally checking the aspect of the adhesive. If no coagulum is formed, the cycle is repeated, i.e. the sample is stored at the selected temperatu
23、re for another 16 h and then held at (23 1) C for 8 h up to a maximum number of three cycles. The final viscosity of the adhesive is measured. Freeze-thaw cycle stability is indicated by the selected test temperature and the number of cycles endured without visible coagulation at an increase of visc
24、osity not exceeding the manufacturers specification limits. NOTE 1 The freezing temperature selected depends on the chemical nature of the adhesive to be tested and the temperature conditions to which the adhesive is exposed in service. If necessary, preliminary tests should be carried out in order
25、to determine the appropriate test temperature. NOTE 2 The results obtained by this method are not necessarily applicable to larger-volume vessels. 5 Apparatus 5.1 Cylindrical container, 90 mm height, 60 mm inside diameter and 2 mm wall thickness with a large opening on the top and capable of being s
26、ealed with an airtight lid. NOTE At test temperatures of - 5 C or - 10 C the container can be made of polyethylene; at lower freezing temperatures cylindrical stainless steel container can be used. DIN EN 1239:2011-07 EN 1239:2011 (E) 5 5.2 Test chamber, a cabinet, room or enclosure space large enou
27、gh to contain the samples to be tested allowing at least 25 mm of air space between the sides of adjacent containers and capable of being controlled at temperatures of (- 5 1) C, (- 10 1) C, (- 15 1) C, and (- 20 1) C, respectively. 5.3 Thermometer, allowing measurement of the temperature inside the
28、 test chamber to be 0,5 C. 5.4 Viscometer, in accordance with EN 12092 to determine the viscosity of the adhesive to be tested. 6 Sampling, examination and preparation of samples A significant sample of the adhesive shall be taken in accordance with EN ISO 15605 and prepared for testing as described
29、 in EN 1067. 7 Procedure 7.1 Measure the viscosity of the sample at (23 1) C in accordance with EN 12092 using a suitable viscometer (see 5.4) and note the result. 7.2 Put (200 5) ml of the test sample into the cylindrical container (see 5.1). 7.3 Seal the container airtight and place it for 16 h in
30、 the test chamber (see 5.2) set at the selected freezing temperature. 7.4 Remove the container from the test chamber and let it thaw at (23 1) C for 8 h. 7.5 Check by insertion of a glass rod the condition of the sample (homogeneous, water layer on its top, thickened, irreversible gelation, e.g. by
31、formation of elastic, rubbery materials) and note the result. NOTE If visible coagulation is formed that cannot be dispersed by manual stirring, the test is regarded as completed. If this test is not conclusive, the adhesive should be exposed to a further complete freeze-thaw cycle. 7.6 Homogenize t
32、he sample, where the sample shows a surface-water layer or is thickened. 7.7 Continue the test until three freeze-thaw cycles are completed without stating visible coagulum. 7.8 Measure again the viscosity of the sample at (23 1) C as described in 7.1. 7.9 Note the test temperature, the condition of
33、 the adhesive (see 7.5) after each cycle, the number of cycles completed without formation of visible, indispensable coagulum, the initial viscosity (see 7.1) and the final viscosity (see 7.8) determined. 8 Expression of results and classification 8.1 Expression of results The freeze-thaw stability
34、of the adhesive tested at a selected freeze temperature is expressed as the number of cycles endured without the formation of visible and indispersable coagulum and a change of viscosity not exceeding the manufacturers specification limits. DIN EN 1239:2011-07 EN 1239:2011 (E) 6 8.2 Classification I
35、n accordance with the test results obtained, the adhesive shall be classified: “freeze temperature / number of cycles“ For example, an adhesive belongs to the freeze-thaw stability class “- 10 C/3 cycles“ in accordance with EN 1239 if enduring three cycles without visible coagulation at a freeze tem
36、perature of - 10 C. 9 Test report The test report shall include: a) reference to this European Standard, i.e. EN 1239; b) complete identification of the adhesive under test, in particular type, name/designation, manufacturer, and lot number/date of supply; c) freeze temperature applied in the test c
37、ycles; d) initial (see 7.1) and final (see 7.8) viscosities of the adhesive tested; e) test results expressed in accordance with 8.1; f) classification in accordance with 8.2; g) any modification of the procedure described in this standard and any circumstances which may have affected the result; h) date of test. DIN EN 1239:2011-07
