1、CEN PRENt22bO 94 3g09589 OObbL2b LO9 m Edition approved for publication 1994-07-25 AECMA STANDARD NORME AECMA AECMA NORM The equivalent versions in French and German languages can be supplied by B.N.A.E. - Technopolis 54 - 199, rue Jean-Jacques Rousseau 92138 ICSY - LES - MOULINEAUX CEDEX - FRANCE -
2、 - prEN 2260 Edition 1 July 1994 EDITE PAR LASSOCIATION EUROPEENNE DES CONCRUCTEURS DE MATERIEL AEROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cedex - Tl. (1) 47.36.98.76 UDC : 678.074 : 620.1 : 629.7 Descriptors : Aircraft industry, rubber, silicones, hardnes
3、s ENGLISH VERSION Aerospace series Silicone rubber (VMQ) Hardness 60 IRHD Srie arospatiale Elastomere silicone (VMQ) Duret 60 DIDC Luft- und Raumfahrt Silicon-Elastomer (VMQ) Hrte 60 IRHD This “Aerospace series“ Standard has been drawn up under the responsibility of AECMA (Association Europenne des
4、Constructeurs de Matriel Arospatial). It is published on yellow paper in three equivalent versions (English, French, German). It will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. CEN PREN*2260 9Y 3404589 00bbL27 045 Description block Page
5、 3 prEN 2260 : 1994 Identity block 1 Scope This standard specifies the properties of silicone rubber (VMQI I), hardness 60 IRHD, for aerospace applications. 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publications. These normative re
6、ferences 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 European Standard only when incorporated in it by amendment or revision. For undated references t
7、he latest edition of the publication referred to applies. IS0 1629 IS0 1817 EN 3207 Rubber and latices - Nomenclature Rubber, vulcanized - Determination of the effect of liquids Aerospace series - Rubber compounds - Technical specification 2) 3 Application of the material The suitability of the mate
8、rial 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 Typical use For application as ozone and weather resistant rubber with good thermal properties. N
9、OTE : The ozone resistance test is not required. 3.2 Temperature range - Continuous service : from - 55 OC to + 200 OC - Intermittent service : from - 55 OC to + 260 OC 4 Properties See tables 1 and 2. For qualification, all tests shall be performed. For batch acceptance, the tests identified in tab
10、les 1 and 2 shall be performed. 1) Symbol as per IS0 1629 2) In preparation at the date of publication of this standard Previous page is blank CEN PREN*2260 94 m 3404589 0066328 T8L Properties Hardness Units IRHD Modulus at - % strain M Pa Tear strength Nlmm Compression set after 70 h to 150 OC afte
11、r - h to - OC % Page 4 prEN 2260 : 1994 Table 1 - Test methods Column -A 2 1 3 Requirements *) -4 1 2 3 Density I Mglm3 4 Tensile strenath I M Pa 5 min. *) 5 6 I Elongation at break I % 180 min.*) 7 8 9 10 I 9 min. - 40 max. 11, . 12 13 14 . . I Resistance to low temDeratures TR1 O OC Crystallizatio
12、n I Point 15 15.1 15.2 16 40 max. *) Ozone resistance Ozone concentration : ( - f - 1 pphm Elongation of test piece : % Time h Temperature OC 17 18 Corrosion and adhesion on metals in a dry atmosphere Time :-h Temperature : - OC Corrosion and adhesion on metals in a damp atmosphere Time :-h Temperat
13、ure : - OC Humidity :-% 19 20 20.1 Time :-h Temperature : - OC Humidity -% 20.2 21 22 23 24 25 26 27 28 39 30 “1 Test for batch acceptance. 1) The value determined for each batch shall not differ from that determined at qualification by more than 0,02 Mg/m3. Column line 1 Air 70 h/225 OC 2 Oil No. 1
14、, see IS0 1817 70 h/l50 “C 3 4 5 6 7 8 CEN PREN*2260 74 3404589 0066327 938 m Page 5 prEN 2260 : 1994 Table 2 - Tests after exposure to test media 1 2 I Test media I I Conditions of I exposure Units Volume Permi tted variation of the properties compared to the initial value I Mass 1% Tensile strength Elongation at break I Hardness 3 *) Test for batch acceptance 4 31 - 20 max. I - 20 max. - 15 rnax. I - 40 max. O +O - 10 1 -10 5 Test fluid No. 101, see IS0 181 7 70 h/l50 OC + 35 O
