1、ASD-STAN STANDARD NORME ASD-STAN ASD-STAN NORM prEN 2837 Edition P 1 July 2011 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATIONAvenue de Tervuren, 270 - B-1150 Brussels - Tel. 32 2 775 8126 - Fax. 32 2 775 8131 - www.asd-stan.orgICS: Descriptors: ENGLISH VERS
2、ION Aerospace series Chloroprene rubber (CR) Heat resistance Hardness 60 IRHD Srie arospatiale lastomre chloroprne (CR) Rsistant la chaleur Duret 60 DIDC Luft- und Raumfahrt Chloropren-Elastomer (CR) Wrmebestndig Hrte 60 IRHD This “Aerospace Series“ Prestandard has been drawn up under the responsibi
3、lity of ASD-STAN (The AeroSpace and Defence Industries Association of Europe - Standardization). It is published for the needs of the European Aerospace Industry. It has been technically approved by the experts of the concerned Domain following member comments. Subsequent to the publication of this
4、Prestandard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and review by users and formal agreement of ASD-STAN, it will be submitted as a draft European Standard (
5、prEN) to CEN (European Committee for Standardization) for formal vote and transformation to full European Standard (EN). The CEN national members have then to implement the EN at national level by giving the EN the status of a national standard and by withdrawing any national standards conflicting w
6、ith the EN. Edition approved for publication 1 July 2011 Comments should be sent within six months after the date of publication to ASD-STAN Non-metallic Material Domain Copyright 2011 by ASD-STAN prEN 2837:2011 (E) 2 Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Application of the m
7、aterial 3 4 Properties .3 5 Designation 5 6 Technical specification .5 Foreword This standard was reviewed by the Domain Technical Coordinator of ASD-STANs Non-metallic Material Domain. After inquiries and votes carried out in accordance with the rules of ASD-STAN defined in ASD-STANs General Proces
8、s Manual, this standard has received approval for Publication. prEN 2837:2011 (E) 3 1 Scope This standard specifies the properties of chloroprene rubber (CR) 1)heat resistant, hardness 60 IRHD, for aerospace applications. 2 Normative references The following referenced documents are indispensable fo
9、r the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 3207, Aerospace series Rubber compounds Technical specification ISO 1629, Rubber and lattices Nomencl
10、ature ISO 1817, Rubber, vulcanized Determination of the effect of liquids 3 Application of the material 3.1 General 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 a
11、re obtained from standard test specimens. 3.2 Typical use For applications where resistance to atmospheric ageing and ozone attack is required coupled with moderate resistance to petroleum based fuels and lubricants. 3.3 Temperature range Continuous service : from 40 C to 120 C; Intermittent service
12、 : from 40 C to 150 C. 4 Properties See Table 1 and Table 2 according to EN 3207. For qualification, all tests shall be performed. For batch acceptance, the tests identified with footnote “ in Table 1 and Table 2 shall be performed. 1) Symbol as per ISO 1629. prEN 2837:2011 (E) 4 Table 1 Test method
13、s Line Column1 2 3 Properties Units Requirements1 Hardness IRHD 60 45 2 3 Density Mg/m3a 4 5 Tensile strength MPa 13 min. 6 7 Elongation at break % 300 min. 8 9 Modulus at % strain MPa 10 11 Tear strength N/mm 12 13 Resistance to low temperatures TR 10 C 30 max. 14 Crystallization 168 h at 10 C Poin
14、t 5 15 Compression set % 15.1 After 24 h to 125 C 40 max. 15.2 After h to C 16 17 Ozone resistance Ozone concentration : (50 5) pphm Elongation of test piece : 20 % Time : 70 h Temperature : 30 C nil cracking 18 19 Corrosion and adhesion on metals Time : 168 h Temperature : 100 C no corrosion no adh
15、esion 20 Corrosion and adhesion on metals 20.1 Time : h Temperature : C Humidity : % 20.2 Time : h Temperature : C Humidity : % 21 22 23 24 25 26 27 28 29 30 Test for batch accepted. aThe value determined for each batch shall not differ from that determined at qualification by more than 0,02 Mg/m3.
16、prEN 2837:2011 (E) 5 Table 2 Tests Line Column 1 2 3 4 5 1 Test media Air Liquid B, see ISO 1817 2 Conditions of exposure in test media Units 70 h/125 C 70 h/23 C 3 Permitted variation of the properties compared to the initial value Volume % 75 4 Mass % 5 Tensile strength % 1015 6 Elongation at break % 305 7 Hardness IRHD 010 8 Test for batch acceptance. 5 Designation EXAMPLE Description block RUBBER Identity block EN2837 Number of this standard 6 Technical specification See EN 3207.
