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1、BRITISH STANDARD AEROSPACE SERIES BS EN 2261:1995 Silicone rubber (VMQ) Hardness 70 IRHD The European Standard EN 2261:1995 has the status of a British Standard ICS 49.040.10 UDC 678.074:620.1:629.7 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:20:06 GMT+00:00 2006, Uncontrolled Copy, (c
2、) BSI BS EN 2261:1995 This British Standard, having been prepared under the direction of the Engineering Sector Board, was published under the authority of the Standards Board and comes into effect on 15 November 1995 BSI 11-1999 The following BSI references relate to the work on this standard: Comm
3、ittee reference ACE/25 Draft for comment 94/714387 DC ISBN 0 580 24086 X Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee ACE/25, Rubber and elastomeric materials for aerospace purposes, upon which the following bodies wer
4、e represented: British Adhesives and Sealants Association British Hydromechanics Research Group British Narrow Fabrics Association British Rubber Manufacturers Association Ltd. Ministry of Defence Society of British Aerospace Companies Limited Amendments issued since publication Amd. No.DateComments
5、 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:20:06 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 2261:1995 BSI 11-1999i Contents Page Committees responsibleInside front cover National forewordii Foreword2 1Scope3 2Normative references3 3Application of the material3 4Properties3 5Des
6、ignation3 6Technical specification3 Table 1 Test methods4 Table 2 Tests after exposure to test media5 List of referencesInside back cover Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:20:06 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 2261:1995 ii BSI 11-1999 National foreword This B
7、ritish Standard has been prepared by Technical Committee ACE/25 and is the English language version of EN 2261:1995 Aerospace Series Silicone rubber (VMQ) Hardness 70 IRHD, published by the European Committee for Standardization (CEN). EN 2261 was produced as a result of international discussion in
8、which the United Kingdom took an active part. The European Standard EN 3207, referred to in clause 2 is in preparation and there is at present no corresponding British Standard. Preliminary copies of prEN 3207 are available from: BNAE, Technopolis 54, 199 rue Jean Jacques Rousseau, 92138 Issy les Mo
9、ulineaux Cedex, Paris, France. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Cross-refe
10、rences Publication referred toCorresponding British Standard ISO 1629:1987BS 3502 Symbols for plastics and rubber materials Part 2:1991 Schedule for symbols for rubbers ISO 1817:1985BS 903 Physical testing of rubber Part A16:1987 Determination of the effect of liquids Summary of pages This document
11、comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 6, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cove
12、r. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:20:06 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2261 September 1995 ICS 49.040.10 Descriptors: Aircraft industry, rubber, silicones, hardness English version Aerospace series Silicone r
13、ubber (VMQ) Hardness 70 IRHD Srie arospatiale lastomre silicone (VMQ) Duret 70 DIDC Luft- und Raumfahrt Silicon-Elastomer (VMQ) Hrte 70 IRHD This European Standard was approved by CEN on 1995-03-02. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditi
14、ons 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 Central Secretariat or to any CEN member. This European Standard exists in three of
15、ficial 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 Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria
16、, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue d
17、e Stassart 36, B-1050 Brussels 1995 All rights of reproduction and communication in any form and by any means reserved in all countries to CEN and its members Ref. No. EN 2261:1995 E Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:20:06 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 2261:19
18、95 BSI 11-1999 2 Foreword This European Standard has been prepared by the European Association of Aerospace Manufacturers (AECMA). After inquiries and votes carried out in accordance with the rules of this Association, this standard has successively received the approval of the National Associations
19、 and the Official Services of the member countries of AECMA, prior to its presentation to CEN. 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 March 1996, and conflicting national standards shall
20、be withdrawn at the latest by March 1996. According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain,
21、Sweden, Switzerland, United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:20:06 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 2261:1995 BSI 11-19993 1 Scope This standard specifies the properties of silicone rubber (VMQ)1), hardness 70 IRHD, for aerospace applications. 2 Normati
22、ve references This European Standard incorporates by dated or undated reference provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
23、 of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. ISO 1629, Rubber and latices Nomenclature. ISO 1817, Rubber, vulcanized Determination of the effect of liqui
24、ds. EN 3207, Aerospace series Rubber compounds Technical specification2). 3 Application of the material The suitability of the material for a specific application shall be determined by complementary tests carried out on the finished product as the properties specified in this standard are obtained
25、from standard test specimens. 3.1 Typical use For application as ozone and weather resistant rubber with good thermal properties. NOTEThe ozone resistance test is not required. 3.2 Temperature range 4 Properties See Table 1 and Table 2. For qualification, all tests shall be performed. For batch acce
26、ptance, the tests identified in Table 1 and Table 2 shall be performed. 5 Designation 6 Technical specification EN 3207 1) Symbol as per ISO 1629 2) In preparation at the date of publication of this standard Continuous service:from 55 C to + 200 C Intermittent service:from 55 C to + 260 C Licensed C
27、opy: sheffieldun sheffieldun, na, Fri Nov 03 01:20:06 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 2261:1995 4 BSI 11-1999 Table 1 Test methods Line Column 123 PropertiesUnitsRequirements 1HardnessIRHD 70 *) 2 3DensityMg/m31)*) 4 5Tensile strengthMPa5 min.*) 6 7Elongation at break%150 min.*) 8 9Mod
28、ulus at % strainMPa 10 11Tear strengthN/mm8 min. 12 13Resistance to low temperatures TR10C 40 max. 14CrystallizationPoint 15Compression set 15.1after70hto150 C % 40 max.*) 15.2afterhtoC 16 Ozone resistance Ozone concentration: ()pphm 17Elongation of test piece:% Time:h Temperature:C 18 Corrosion and
29、 adhesion on metals in a dry atmosphere 19Time:h Temperature:C 20Corrosion and adhesion on metals in a damp atmosphere 20.1 Time:h Temperature:C Humidity:% 20.2 Time:h Temperature:C Humidity:% 21 22 23 24 25 26 27 28 29 30 *) Test for batch acceptance 1) The value determined for each batch shall not
30、 differ from that determined at qualification by more then 0,02 Mg/m3. +5 4 Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:20:06 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 2261:1995 BSI 11-19995 Table 2 Tests after exposure to test media Line Column 12345 1Test mediaAirOil No. 1 see IS
31、O 1817 Test fluid 101 see ISO 1817 2Conditions of exposure in test mediaUnits70 h/225 C70 h/150 C70 h/150 C 3 Permitted variation of the properties compared to the initial value Volume%+ 10a 0 + 35 0 4Mass% 5Tensile strength% 25 max. 20 max. 6Elongation at break% 40 max. 15 max. 7HardnessIRHD+ 10 10
32、 0 10 8 a Test for batch acceptance Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:20:06 GMT+00:00 2006, Uncontrolled Copy, (c) BSI 6 blank Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:20:06 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 2261:1995 BSI 11-1999 List of refere
33、nces See national foreword. Licensed Copy: sheffieldun sheffieldun, na, Fri Nov 03 01:20:06 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 2261:1995 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independent national body responsible for preparing British Sta
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