1、AECMA STANDARD prEN 4365 NORME AECMA Edition P 1 AECMA NORM August 2001 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES - STANDARDIZATION (AECMA-STAN) Gulledelle 94 - 8-1200 BRUXELLES - Tel. (+32) 2 775 81 10 - Fax. (+32) 2 775 81 11 ICs: - Edition approved for publication Comments sho
2、uld be sent within six months after the date of publication to Gulledelle 94 Material Domain Mr Pays 2001-08-31 AECM A-STAN 8-1200 BRUXELLES 0 aecrna 200 Descriptors: ENGLISH VERSION Aerospace series Heat and crazing resistant cast acrylic, crosslinked, and low moisture absorption Properties Srie ar
3、ospatiale Luft- und Raumfahrt Acryliques rsistant la chaleur et au fendillement, couls et rticuls, avec faible absorption dhumidit Wrmeform- und Spannungsrissbestndiges Acrylglas, gegossen und vernetzt, niedrige Wasseraufnahme Caractristiques Eigenschaften This Rerospace Series“ Prestandard has been
4、 drawn up under the responsibility of AECMA-STAN (The European Association of Aerospace Industries - Standardization). It is published on green paper for the needs of the European Aerospace Industry. It has been technically approved by the experts of the concerned Domain following member comments. S
5、ubsequent 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. After examination and review by users and formal agreement of AECMA-STAN it will be su
6、bmitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. Nota - copies can be supplied by B.N.A.E. - Technopolis 54 - 199, nie Jean-Jacques Rousseau - 92138 ICCY-LES-MOULINEAUX CEDEX COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceL
7、icensed by Information Handling ServicesPage 2 prEN 4365: 2001 Blank page COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling ServicesPage 3 prEN 4365: 2001 Scope This standard specifies the properties of heat and crazing resistant cast, crosslinke
8、d, low moisture absorption acrylic (PMMA). 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 ref
9、erences, 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 the latest edition of the publication referred to applies. IS0 62 IS0 75-2 Plastics - Determination of water absor
10、ption Plastics - Determination of temperature of deflection under load - Part 2: Plastics and B is0 179 ebonite Plastics - Determination of Charpy impact strength IS0 306 Plastics - Thermoplastic materials - Determination of Vicat softening temperature IS0 489 Plastics - Determination of the refract
11、ive index IS0 527-2 Plastics - Determination of tensile properties - Part 2: Test conditions for moulding and extrusion plastics IS0 554 Standard atmospheres for conditioning and/or testing - Specifications IS0 1183 (ail parts) Plastics - Methods for determining the density of non-cellular plastics
12、IS0 281 8 EN 2155-4 EN 2155-5 EN 2155-6 EN 2155-7 D EN2155-8 EN 2155-9 EN 21 55-1 2 EN 21 55-1 9 EN 21 55-20 EN 3844-2 EN 4243 EN 4367 ASTM-D 1925 Plastics - Preparation of test specimens by machining Aerospace series - Test methods for transparent materials for aircraft glazing - Part 4: Determinat
13、ion of ultraviolet light transmission over the wavelength range 280 nm to 360 nm 1) Aerospace series - Test methods for transparent materials for aircraft glazing - Part 5: Determination of visible light transmission Aerospace series - Test methods for transparent materials for aircraft glazing - Pa
14、rt 6: Determination of optical defects 1) Aerospace series - Test methods for transparent materials for aircraft glazing - Part 7: Determination of optical deviation Aerospace series - Test methods for transparent materials for aircraft glazing - Part 8: Determination of optical distortion Aerospace
15、 series - Test methods for transparent materials for aircraft glazing - Part 9: Determination of haze Aerospace series - Test methods for transparent materials for aircraft glazing - Part 12: Determination of linear thermal expansion Aerospace series - Test methods for transparent materials for airc
16、raft glazing - Part 19: Determination of craze resistance Aerospace series - Test methods for transparent materials for aircraft glazing - Pari 20: Determination of retention of strength after crazing for as-cast acrylics 1) Aerospace series - Flammability of non-metallic materials - Part 2: Small b
17、urner test, horizontal determination of the horizontal flame propagation 1) Aerospace series - Cast acrylic sheets - Technical Specification 2) Aerospace series - Cast acrylic sheets - Dimensions 2) Standard Test Method for Yellowness Index for Plastics (Discontinued 1995, no replacement 3) 1) Publi
18、shed as AECMA Prestandard at the date of publication of this standard 2) In preparation at the date of publication of this standard 3) Published by: American Society for testing and Materiais (ASTM), 1916 Race Street, Philadelphia, PA 19103, USA COPYRIGHT Association Europeene Des Constructeurs de M
19、ateriel AerospaceLicensed by Information Handling ServicesPage 4 prEN 4365: 2001 3 Field of application 3.1 Typical application Heat and crazing resistant, civil and military aircraft glazing, colourless or with a transparent coloration 3.2 Material condition As cast and crosslinked, without heat tr
20、eatment 3.3 Surface finish Sheet surfaces shall not be chemically treated. NOTE The surfaces may however be polished. 4 Required characteristics In accordance with table i For qualification testing, all properties called for in the present material standard shall be substantiated by performing tests
21、 on three production batches. For acceptance testing (batch control), all tests identified in footnotes e and in table 1 shall be performed, 5 Designation See EN 4367. 6 Technical specification See EN 4243. COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Informatio
22、n Handling ServicesPage 5 prEN 4365: 2001 Properties Table 1 - Tests Units Test to Minimum requirements Column Line No. 1 1 .I 1.2 1.3 1.4 1.5 1.6 1.7 2 2.1 2.2 2.3 2.4 3 3.1 3.2 3.3 3.4 3.5 continued IS0 527-2 Specimen Type 1B 1 62 2 2 800 T-2 I 3 I 4 “C Temperature of deflection under load IS0 75-
23、2Ae 1 O0 Tensile stress at break a 1 Vicat softening temperature e “C Vicat softening temperature ef “C I MPa I IS0 306 108 Method B 50 C/h 105 Tensile strain at break a Modulus of elasticity 1/K Coefficient of linear thermal expansion EN 2155-12 7,s x IO- max. Impact strength IS0 489 IS0 179/lfU n
24、1,49 f 0,Ol Thermal properties Optical defects - EN 2155-7 EN 2155-8 EN 4243, see 4.4.1. EN 4243, see 4.4.1. Optical properties Refractive index nr I - Optical distortion Visible light transmission - 12,5mm 2,5 mm a I 8 mm 8 mm a I 12 mm 12 mm a 2 20 mm 20 mm a150 mm 50 mm a 5 70 mm % Optical deviat
25、ion Minutes I of arc 91 I 90 89 88 85 84 EN 2155-5 EN 4243, see 4.4.2 and 4.4.3. EN 2155-6 COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling ServicesPage 6 prEN 4365: 2001 5.3 a Test speed: 5 mmlmin Specimen prepared in accordance with IS0 2818 T
26、est speed: 1 mm/min Only applicable to sheets 2 4 mm in thickness One of these values shall be demonstrated during acceptance testing of the production batch. Penetration of intending tip 0,l mm only This value shall be demonstrated during acceptance testing of the production batch. Testing in produ
27、ct thickness, thickness to be stated. At all wavelengths between 280 and 360 nm After conditioning 144 h in the standard atmosphere of (23 12) OC and (50 f 5) % relative humidity in accordance with IS0 554 Outer fibre stress 14 MPa Failure of more than one test specimen shall entail rejection. If on
28、e test specimen fails, a further sample of 10 specimens from another sheet shall be tested. None of these re-test specimens shall fail. i * For all thicknesses I rn 1 2 3 Properties Units Test to Haze % EN 2155-9 UV transmission % EN 21 55-4 Column Line No. 3.6 3.7 3.8 4 4.1 4.2 4.3 4.4 4.5 4.6 4.7 4.8 4.9 4 Minimum requirements 3 max. 5 max. j I 4.10 Density 15 1 ,I9 t 0,Ol IS0 1183 Method A g/cm3 I 5.1 Retention of strength after crazing no failures - EN 2155-20 COPYRIGHT Association Europeene Des Constructeurs de Materiel AerospaceLicensed by Information Handling Services
