1、AECMA PREN+25bb 95 = LOL23Ll 0009391 231 m _-i*-. “ - . . Edition approved for publication Comments should be sent within six months after the date of publication to AECMA STANDARD prEN 2566 NORME AECMA Edition P 1 AECMA NORM April 1995 DITE PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATERIEL A
2、ROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cedex - Tl. (i) 47.36.98.76 ICs : Descriptors : C7 Chairman ENGLISH VERSION Aerospace series Fluorocarbon rub ber (FPM 1 Hardness 70 IRHD Srie arospatiale lastomre fluor (FPM) Duret 70 DIDC Luft- und Raumfahrt Fluor
3、ocarbon-Elastomer (FPM) Hrte 70 IRHD This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA (Association Europenne des Constructeurs de Matriel Arospatial). It is published on green paper for the needs of AECMA-Members. It has been technically approved by the experts
4、 of the concerned Technical Committee following comment by the Member countries. Subsequent to the publication of this Prestandard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. Afte
5、r examination and signature of the AECMA Standard Checking Centre (NPS) and formal agreement of the Official Services of the Member countries it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. 1995-04-28 1 AECMA I Technopolis - 175, rue
6、 Jean-Jacques Rousseau Mr Bottrell 921 38 Issy-les-Moulineaux Cedex - FRANCE I aecma 1995 AECMA PRENx2566 95 M LOL23LL 0009392 178 Page 3 prEN 2566 : 1995 1 Scope This standard specifies the properties of fluorocarbon rubber (FPM) 11, hardness 70 IRHD, for aerospace applications. 2 Normative referen
7、ces IS0 1629 IS0 181 7 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 material for a specific application shall be determined
8、 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 Application requiring resistance to air, hydrocarbon and synthetic oil, and fuels at elevated temperature. 3.2 Temperature range - Conti
9、nuous service : - Intermittent service: from - 20 OC to + 225 OC from - 20 OC to + 250 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. 5 Designation Description block RUBBER Identity
10、 block EN2566 I Number of this standard 6 Technical specification EN 3207 1) Symbol as per IS0 1629 2) In preparation at the date of publication of this standard Previous page is blank Prooerties Units Densitv Mdm3 Resistance to low temDeratures TRI O OC Crvstaiiization Point Compression set after 2
11、4 h to 200 OC after 70 h to 200 OC % AECMA PREN*25bb 95 M LOL23LL 0009393 004 M Page 4 prEN 2566 : 1995 Table 1 - Test methods Column 1 2 3 Requirements Hardness IRHD + 5 *) 70-4 1 2 3 1) *) 4 Tensile strenath I MPa 11 min. 1 5 6 I 7 % 175 min.*) Elongation at break 8 9 Modulus at - % strain MPa 10
12、11 Tear strenath 1 N/mm 12 13 14 15 - 12 max. 35 max. *) 15.1 15.2 65 max. 16 Ozone resistance Ozone concentration : ( - k - ) pphm Time h Elongation of test piece: % Temperature OC 17 18 Corrosion and adhesion on metais in a dry atmosphere Time : 168 h 19 no corrosion no adhesion Temperature : 200
13、OC Corrosion and adhesion on metais in a damp 20 atmosphere Time :-h Temperature : - OC Humiditv : -% 20.1 20.2 Time :-h Temperature : - OC Humidity :-% 21 22 23 24 25 26 27 28 39 30 1) The value determined for each batch shall not differ from that determined at qualification by more *) Test for bat
14、ch acceptance. than 0,03 Mg/m3. AECMA PREN82566 75 m L01231L 0007394 T40 m 2 Page 5 prEN 2566 : 1995 I Conditions of in test media exposure Units 70 h/250 OC Table 2 - Tests after exposure to test media Mass 1 % l- Test media Tensile strength I Air % - 20 max. % Elongation at break Permitted variation of the properties compared to the initial value - 50 max. IRHD Hardness +I5 O *) Test for batch acceptance. 4 Liquid 6, see IS0 1817 70 h/40 OC +7 O +7 O +3 -7 5 Liquid No. 101, see IS0 1817 70 h/150 OC +12 “t O +10 *) O +5 - 10
