1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Aerospace series - Sealants - Test method - determination of the application timeBS EN 3094:2017EUROPEANSTANDARDNORME EUROPENNE EUROPISCHE NORMEN 3094 October 2017ICS 49.025.99EnglishVersionAerospace series - Sealants -
2、 Test method - determination of the application time Srie arospatiale - Produits dtanchit - Mthode dessai - Dtermination du temps dapplicationLuft- und Raumfahrt - Dichtmassen - Prfverfahren -Bestimmung der VerarbeitungszeitThis European Standard was approved by CEN on 26 June 2017.CEN members are b
3、ound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving thisEuropean Standard the status of a national standard without any alteration.Up-to-date lists and bibliographical referencesconcerning such national standards may be obtained on application to the CE
4、N-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 bytranslation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC ManagementCentre has
5、 the same status as the officialversions.CEN members are the nationalstandards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxemb
6、ourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Bru
7、ssels 2017 CEN All rights of exploitation in any form and by any means reservedworldwide for CENnational Members.Ref. No. EN 3094:2017 ENational forewordThis British Standard is the UK implementation of EN 3094:2017.The UK participation in its preparation was entrusted to Technical Committee ACE/61/
8、-/6, Mechanical Testing of Metallic Materials for Aerospace Purposes.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct applic
9、ation. The British Standards Institution 2017 Published by BSI Standards Limited 2017ISBN 978 0 580 98818 9ICS 49.025.99Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Commit
10、tee on 30 November 2017.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 3094:2017EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 3094 October 2017 ICS 49.025.99 English Version Aerospace series - Sealants - Test method - determination of the application tim
11、e Srie arospatiale - Produits dtanchit - Mthode dessai - Dtermination du temps dapplication Luft- und Raumfahrt - Dichtmassen - Prfverfahren - Bestimmung der Verarbeitungszeit This European Standard was approved by CEN on 26 June 2017. CEN members are bound to comply with the CEN/CENELEC Internal Re
12、gulations 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 me
13、mber. 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.
14、 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, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Polan
15、d, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2017 CEN All rights of exploi
16、tation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3094:2017 EBS EN 3094:2017EN 3094:2017 (E) 2 Contents Page European foreword 3 1 Scope 4 2 Normative references 4 3 Terms and definitions . 4 4 Principle of the test method 4 5 Method A (viscosity) 4 6 Metho
17、d B (extrusion). 5 7 Designation . 6 8 Test report . 6 BS EN 3094:2017EN 3094:2017 (E) 3 European foreword This document (EN 3094:2017) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried out in accordance wi
18、th the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of ASD, prior to its presentation to CEN. This European Standard shall be given the status of a national standard, either by publication of an iden
19、tical text or by endorsement, at the latest by April 2018, and conflicting national standards shall be withdrawn at the latest by April 2018. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for id
20、entifying 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: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yu
21、goslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 3094:2017EN 3094:2017 (E) 4 1 Sc
22、ope This European Standard specifies two methods for the determination of the application time of sealants. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the editi
23、on cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 2555:1989, Plastics Resins in the liquid state or as emulsions or dispersions Determination of apparent viscosity by the Brookfield Test method 3 Terms and definitions For
24、the purposes of this document, the following terms and definitions apply. 3.1 application time application time is the time interval, at a specified temperature and humidity, between the mixing of the base material with the curing system and the point where the sealant has cured to a state where app
25、lication by normal methods is no longer possible 4 Principle of the test method The application time is determined by two different methods, depending on the viscosity of the sealant. 4.1 Method A (viscosity) For sealants with a viscosity lower than 75 Pa.s, the viscosity is measured with a BROOKFIE
26、LD viscometer or equivalent at the end of the specified application time according to ISO 2555. 4.2 Method B (extrusion) For sealants with a viscosity higher than 75 Pa.s, the mass extruded through a nozzle under specified conditions is measured at the end of the stated application time. 5 Method A
27、(viscosity) 5.1 Conditioning The base compound and the curing system shall be stabilized at (23 2) C in closed containers for at least 8 h before testing. 5.2 Procedure The base compound shall be mixed with the proper amount of the curing system and filled into a can. The can shall be kept at (23 2)
28、 C and tightly covered until the testing of the viscosity. At the end of the specified application time, measured from the beginning of the mixing period, the viscosity of the sealant shall be determined according to ISO 2555 using spindle, rotation speed and stirring procedures as defined in the ma
29、terial specification. BS EN 3094:2017EN 3094:2017 (E) 5 5.3 Calculation and expression of results The reading taken on the viscometer shall be converted into a viscosity value using the procedure stated for the viscometer, spindle and speed. 6 Method B (extrusion) 6.1 Apparatus 6.1.1 Sealant applica
30、tion gun 6.1.2 Sealant cartridge See Figure 1. Dimensions in millimetres Key 1 Piston 2 Cartridge 3 Nozzle 4 Diameter 40 0,1 Figure 1 Sealant cartridge 6.1.3 Nozzle See Figure 2. Dimensions in millimetres Key 1 Nozzle Figure 2 Nozzle BS EN 3094:2017EN 3094:2017 (E) 6 6.1.4 Air supply with a pressure
31、 of (620 35) kPa 6.1.5 Balance with an accuracy of 0,1 g. 6.2 Conditioning The base compound and the curing system shall be stabilized at (23 2) C in closed containers for at least 8 h before testing. 6.3 Procedure At least 250 g of the base compound shall be mixed with the proper amount of the curi
32、ng system. The mixed sealant shall promptly be filled into a cartridge (see 7.1.2) with a nozzle (see 7.1.3) and placed in a gun. The gun and sealant shall be maintained at (23 2) C throughout the test. The gun shall be attached to a constant air supply of (620 35) kPa. Initially 50 mm to 80 mm of s
33、ealant shall be extruded to clear trapped air. At the end of the specified application time, measured from the beginning of the mixing period, the sealant shall be extruded into a suitable receptacle for (60 2) s and the amount of extruded sealant determined by weighing. 6.4 Calculation and expressi
34、on of results The amount of extruded sealant shall be expressed in g.min1. 7 Designation EXAMPLE EN3094A Number of this standard Type of method (A or B) 8 Test report The test report shall include the following information: identification of the sample, batch number, number of this standard and test
35、 method (A or B), viscometer, spindle, rotating speed used, time for rotating (if more than 1 min) and stirring procedures, when testing according to method A, temperature and humidity, number of test specimens, test results, whether or not the results are within the limits of the material specifica
36、tion, date of testing. BS EN 3094:2017This page deliberately left blankThis page deliberately left blankBSI is the national body responsible for preparing British Standards and other standards-related publications, information and services.BSI is incorporated by Royal Charter. British Standards and
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