1、AECMA PREN+2104 95 1012311 0009140 TO8 AECMA STANDARD NORME AECMA AECMA NORM prEN 2104 Edition 2 I .e- .,: January 1995 EDIT PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATERIEL AROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cedex - Tl. (11 47.36.98.76 UDC
2、: Supersedes edition 1 January 1978 Descriptors : ENGLISH VERSION Aerospace series Acrylonitrile-butadiene rubber (NBR) Hardness 40 IRHD Srie arospatiale lastomre butadine-nitile acrylique (NBRI Duret 40 DIDC Luft- und Raumfahrt Acrylnitril-Butadien-Elastomer INBRI Hrte 40 IRHD This “Aerospace serie
3、s.“ Standard has been drawn up under the responsibility of AECMA (Association Europenne des Constructeurs de Matriel Arospatial). It is published on yell0 w paper in three equivalent versions (English, French, German). It will be submitted as a draft European Standard to CEN (European Committee for
4、Standardization) for formal vote. Edition approved for publication 1995-01-31 The equivalent versions in French and German languages can be supplied by B.N.A.E. - Technopolis 54 - 199, rue Jean-Jacques Rousseau 92138 ISSY - LES - MOULINEAUX CEDEX - FRANCE I I aecma 1995 AECMA PRENX2104 95 3032333 00
5、07343 944 Description block RUBBER Page 3 EN 21 04 : 1995 Identity block EN2104 1 Scope This standard specifies the properties of acrylonitrile-butadiene rubber (NBR) 1) , hardness 40 IRHD, for aerospace applications. 2 Normative references This European Standard incorporates by dated or undated ref
6、erence, 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 European Standard only when incorpo
7、rated in it by amendment or revision. For undated references the 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 specificatio
8、n 2) 3 Application of the matenal 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 Typical use General purpose applicat
9、ion where resistance to mineral-oil-based fluids is required. NOTE : These materials have poor natural weathering and ozone resistance, a test is not required. 3.2 Temperature range - Continuous service : from - 40 OC to + 100 OC - Intermittent service : from - 40 OC to + 120 OC 4 Properties See tab
10、les 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 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 standa
11、rd Previous page is blank Density Tensile strength Mglm3 MPa Tear strength Resistance to low temperatures TRI O Crvstaliization Nlmm OC Point Page 4 EN 2104 : 1995 Table 1 - Test methods 1 3 2 I Properties I Units Reauirements +5 *) 40 -4 1 Hardness I IRHD I 4 7 min. *I I 5 Elonaation at break I % 4
12、50 min. *) I Modulus at - % strain I M Pa 10 11 I 12 - 30 max. I 13 p 15.2 :ompression set after 72 h at 100 OC I w 40 max. *) after - h at - OC I t 16 I Ozone resistance )zone concentration : t - i - 1 pphm ilongation of test piece : % -emperature OC ime h :orrosion and adhesion on metals Time :-h
13、Temperature : - OC :orrosion and adhesion on metals . Time :-h Temperature : - OC Humidity :-% Test fluid - Time :-h Temperature : - OC Test fluid *- Humidity : -% ! 1 21 I 22 tii I 30 *I Test for batch acceptance. 1) The value determined for each batch shall not differ from that determined at quali
14、fication by more than 0,02 MgIm3. Column Line 3 1 4 5 2 Permitted variation of the properties compared to the initial value 3 4 Mass % Tensile strength % - % Elongation at break Hardness IRHD 8 AECNA PREN*2104 95 2022321 0009243 727 Page 5 EN 2104 : 1995 Table 2 - Tests after exposure to test media 1 I 2 Test media I- Conditions of exposure in test media Units Volume Oil No. 1, se0 IS0 Air I 1817 I 70 h/100 OC 70 h/100 OC l- I - 10 max. I -20max. 1 - I I - 50 max. + 20 + 30 O O “i Test for batch acceDtance.
