1、CEN PREN*2262 94 = 3404589 0066334 285 D AECMA STANDARD NORME AECMA AECMA NORM prEN 2262 July 1994 Edition 1 EDITE PAR LASSOCIATION EUROPEENNE DES CONSTRUCTEURS DE MATERIEL AEROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92 138 Issy-les-Moulineaux Cedex - Tl. (1) 47.36.98.76 UDC : 678.0
2、74 : 620.1 : 629.7 Descriptors : Aircraft industry, rubber, silicones, hardness, tear strength ENGLISH VERSION Aerospace series Silicone rubber (VMQIPVMQ) with high tear strength Hardness 50 IRHD Srie arospatiale Elastomre silicone (VMQIPVMQI rsistance leve au dchirement Duret 50 DIDC Luft- und Raum
3、fahrt Silicon-Elastomer (VMQ/PVMQ) mit hohem WeiterreiBwiderstand Hrte 50 IRHD This “Aerospace series“ Standard has been drawn up under the responsibility of AECMA (Association Europenne des Constructeurs de Matriel Arospatial). It is published on yellow paper in three equivalent versions (English,
4、French, German). It will be submitted as a draf European Standard to CEN (European Committee for Standardization) for formal vote. Edition approved for publication 1994-07-25 The equivalent versions in French and German languages can be supplied by B.N.A.E. - Technopolis 54 - 199, rue Jean-Jacques R
5、ousseau 92138 ISSY - LES - MOULINEAUX CEDEX - FRANCE - Page 3 prEN 2262 : 1994 CEN PREN*:2262 94 m 3404589 00bbL35 LLL m Description block 1 Scope Identity block This standard specifies the properties of silicone rubber (VMQ/PVMQ) 11, with high tear strength, hardness 50 IAHD, for aerospace applicat
6、ions. 2 Normative 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 r
7、evisions of any 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. IS0 1629 IS0 181 7 EN 3207 Rubber and latices - Nomenclature Rubber, vulcanized - Determinati
8、on of the effect of liquids Aerospace series - Rubber compounds - 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 sta
9、ndard are obtained from standard test specimens. 3.1 Typical use For application as ozone and weather resistant rubber with good thermal properties and high tear strength. NOTE : The ozone resistance test is not required. 3.2 Temperature range - Continuous service : from - 55 OC to + 200 OC - Interm
10、ittent service : from - 55 OC to + 225 OC 4 Properties See tables 1 and 2. For qualification, all tests shall be performed. For batch acceptance, the tests identified in tables 1 and 2 shall be performed. 1) Symbol as per IS0 1629 2) In preparation at the date of publication of this standard Previou
11、s page is blank - - CEN PRENx22b2 94 3404589 00bbL3b 058 1 Properties Hardness Page 4 prEN 2262 : 1994 2 3 Units Requirements IRHD 50+5 *I -4 Table 1 - Test methods Density 1 Mglm3 Column Line 1) *I 1 Elongation at break 2 YO 500 min.*) 3 Modulus at - % strain 4 5 6 MPa 7 Tear strength Resistance to
12、 low temperatures TR1 O Crvstallization a 9 10 N/mm 22 min. OC - 40 max. Point 11 12 13 after 70 h to 150 OC 14 15 15.1 % 15.2 .16 17 18 19 20 20.1 20.2 21 22 23 24 25 26 27 28 39 30 1 I Tensile strenath I M Pa I 8.5 min.) Compression set after - h to - OC I I Ozone resistance Ozone concentration :
13、( - i - ) pphm Time h Elongation of test piece: % Temperature OC Corrosion and adhesion on metals in a dry atmosphere Time :-h Temperature : - OC Corrosion and adhesion on metals in a damp atmosp here Time :-h Temperature : - OC Humiditv :-% Time :-h Temperature : - OC Humidity :-% I l I Test for ba
14、tch acceptance. I) The value determined for each batch shall not differ from that determined at qualification by more than 0,02 Mg/m3. CEN PRENx2262 94 m 3404589 O066337 T94 m Page 5 prEN 2262 : 1994 Table 2 - Tests after exposure to test media 1 2 3 4 5 Test media Air Oil No. 1, see IS0 1817 Test f
15、luid No. 101, see IS0 1817 1 2 3 4 5 6 7 8 Conditions of exposure in test media Units 70 h/l50 OC 70 h/l50 OC 70 h/225 OC % + 40 O +12 *I O Volume Mass % Permitted variation of the properties compared to the initial value Tensile strength % - 35 max. - 30 max. Elongation at break % - 40 max. - 30 rnax. Hardness IRHD + 10 O O - 10
