1、BRITISH STANDARD AEROSPACE SERIES BS EN 2260:1995 Silicone rubber (VMQ) Hardness 60 IRHD The European Standard EN 2260:1995 has the status of a British Standard ICS 49.040.10 UDC 678.074:620.1:629.7BS EN2260:1995 This British Standard, having been prepared under the directionof the Engineering Secto
2、rBoard, was published underthe 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: Committee reference ACE/25 Draft for comment 94/714386 DC ISBN 0 580 24081 9 Committees responsible for this British
3、 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 were represented: British Adhesives and Sealants Association British Hydromechanics Research Group British Narrow F
4、abrics Association British Rubber Manufacturers Association Ltd. Ministry of Defence Society of British Aerospace Companies Limited Amendments issued since publication Amd. No. Date CommentsBS EN2260:1995 BSI 11-1999 i Contents Page Committees responsible Inside front cover National foreword ii Fore
5、word 2 1 Scope 3 2 Normative references 3 3 Application of the material 3 4 Properties 3 5 Designation 3 6 Technical specification 3 Table 1 Test methods 4 Table 2 Tests after exposure to test media 5 List of references Inside back coverBS EN2260:1995 ii BSI 11-1999 National foreword This British St
6、andard has been prepared by Technical Committee ACE/25 and is the English language version of EN2260:1995 Aerospace Series Silicone rubber (VMQ) Hardness 60 IRHD, published by the European Committee for Standardization (CEN). EN 2260 was produced as a result of international discussion in which the
7、UnitedKingdom took an active part. The European Standard EN3207, referred to in clause2, is in preparation and there is at present no corresponding British Standard. Preliminary copies of prEN3207 are available from: BNAE, Technopolis54, 199rue Jean Jacques Rousseau, 92138Issy les Moulineaux Cedex,
8、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-references Publicati
9、on referred to Corresponding British Standard ISO 1629:1987 BS 3502 Symbols for plastics and rubber materials Part 2:1991 Schedule for symbols for rubbers ISO 1817:1985 BS 903 Physical testing of rubber Part A16:1987 Determination of the effect of liquids Summary of pages This document comprises a f
10、ront 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 cover.EUROPEAN ST
11、ANDARD NORME EUROPENNE EUROPISCHE NORM EN 2260 September 1995 ICS 49.040.10 Descriptors: Aircraft industry, rubber, silicones, hardness English version Aerospace series Silicone rubber (VMQ) Hardness 60 IRHD Srie arospatiale lastomre silicone (VMQ) Duret 60 DIDC Luft- und Raumfahrt Silicon-Elastomer
12、 (VMQ) Hrte 60 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 conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibl
13、iographical 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 official versions (English, French, German). A version in any other language made by translation under the responsibility o
14、f 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, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal,
15、 Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1995 All rights of reproduction and communication in any form and by any means reserved in
16、 all countries to CEN and its members Ref. No. EN 2260:1995 EEN2260:1995 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 standa
17、rd has successively received the approval of the National Associations 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,
18、at the latest by March1996, and conflicting national standards shall be withdrawn at the latest by March1996. 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
19、, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, United Kingdom.EN2260:1995 BSI 11-1999 3 1 Scope This standard specifies the properties of silicone rubber (VMQ) 1) , hardness60IRHD, for aerospace applications. 2 Normative references This European Standard inc
20、orporates 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 of these publications apply to this Eur
21、opean 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 liquids. EN 3207, Aerospace series Rubber com
22、pounds Technical specification 2) . 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 from standard test specimens. 3.1 Typi
23、cal 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 SeeTable 1 and Table 2. For qualification, all tests shall be performed. For batch acceptance, the tests identified inTable 1
24、and Table 2 shall be performed. 5 Designation 6 Technical specification EN 3207 1) Symbol as per ISO1629 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 CEN2260:1995 4 BSI 11-1999 Table 1 Test methods L
25、ine Column 1 2 3 Properties Units Requirements 1 Hardness IRHD *) 2 3 Density Mg/m 3 1) *) 4 5 Tensile Strength MPa 5 min. *) 6 7 Elongation at break % 180 min. *) 8 9 Modulus at % strain MPa 10 11 Tear strength N/mm 9 min. 12 13 Resistance to low temperatures TR10 C 40 max. 14 Crystallization Point
26、 15 Compression set % 40 max. *) 15.1 after 70hto150 C 15.2 after hto C 16 17 Ozone resistance Ozone concentration Elongation of test piece Time Temperature :( : : : ) pphm % h C 18 19 Corrosion and adhesion on metals in a dry atmosphere Time Temperature : : h C 20 Corrosion and adhesion on metals i
27、n a damp atmosphere 20.1 Time Temperature Humidity : : : h C % 20.2 Time Temperature Humidity : : : h C % 21 22 23 24 25 26 27 28 29 30 *) Test for batch acceptance 1) The value determined for each batch shall not differ from that determined at qualification by more than0.02Mg/m 3 . 605 +4 EN2260:19
28、95 BSI 11-1999 5 Table 2 Tests after exposure to test media Line Column 1 2 3 4 5 1 Test media Air Oil No. 1 seeISO 1817 Test fluid 101 see ISO 1817 2 Conditions of exposure in test media Units 70 h/225 C 70 h/150 C 70 h/150 C 3 Permitted variation of the properties compared to the initial value Vol
29、ume % + 10 a 0 + 35 0 4 Mass % 5 Tensile strength % 20 max. 20 max. 6 Elongation at break % 40 max. 15 max. 7 Hardness IRHD + 10 10 0 10 8 a Test for batch acceptance6 blankBS EN2260:1995 BSI 11-1999 List of references See national foreword.BS EN 2260:1995 BSI 389 Chiswick High Road London W4 4AL BS
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