1、AECMA STANDARD NORME AECMA AECMA NORM Edition approved for publication 2001-07-31 prEN 2719 Edition P 1 July 2001 Comments should be sent within six months after the date of publication to Gulledelle 94 AE CM A-STAN 6-1200 BRUXELLES PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES - STA
2、NDARDIZATION (AECMA-STAN) Gulledelle 94 - 6-1200 BRUXELLES - Tel. (+32) 2 775 8110 - Fax. (+32) 2 775 81 11 ICs: Descriptors: ENGLISH VERSION Aerospace series Polycarbonate sheet Technical specification Srie arospatiale Feuilles en polycarbonate Spcification technique Luft- und Raumfahrt Platten aus
3、 Polycarbonat Technische Lieferbedingungen This Herospace Series Prestandard has been 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 tec
4、hnically approved by the experts of the concerned Domain following member comments. 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. A
5、fter examination and review by users and formal agreement of AECMA-STAN it will be submitted as a drafi European Standard to CEN (European Committee for Standardization) for formal vote. Nota - Extra copies can be supplied by B.N.A.E. - Technopolis 54 - 199, rue Jean-Jacques Rousseau - 92138 ISSY-LE
6、S-MOULINEAUX CEDEX I I Material Domain Mr Pays I I 0 aecma 20C Page 2 prEN 2719: 2001 Contents Page 1 2 3 4 5 6 7 8 Annex A Scope . . . . . . . . . , . . . . , , . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Normative references Definitions . . . . .
7、 . . Quality assurance . . (informative) Certificate of Conformity for semi-finished polycarbonate . 3 3 4 4 6 7 7 7 10 Page 3 prEN 2719: 2001 Scope This standard specifies the inspection and testing requirements for polycarbonate sheet material for aerospace glazing applications. 2 Normat ive refer
8、ences This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the next and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of the
9、se 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 (all parts) IS0 179 (all parts) IS0 306 IS0 489 IS0 527 (all parts) IS0 554 IS0 1172 IS0 1183 IS0 739
10、1-1 IS0 8402 Plastics - Determination of water absorption Plastics - Determination of temperature of deflection under load Plastics - Determination of Charpy impact properties Plastics - Thermoplastic materials - Determination of Vicat Softening Temperature (VST) Plastics - Determination of the refr
11、active index Plastics - Determination of tensile properties Standard atmospheres for conditioning andlor testing - Specifications Textile-glass-reinforced plastics - Prepregs, moulding compounds and laminates - Determination of the textile-glass and mineral-filler content - Calcination methods Plast
12、ics - Methods for determining the density and relative density of non-cellular plastics Plastics - Polycarbonate (PC) moulding and extrusion materials - Part 1 : Designation system and basis for specifications Quality management and quality assurance - Vocabulary EN 2000 EN 2155-5 EN 2155-6 EN 2155-
13、7 EN 2155-8 EN 2155-12 EN 2310 EN 2825 EN 2826 EN 3042 Aerospace series - Quality assurance - EN aerospace products - Approval of the quality system of manufacturers Aerospace series - Test methods for transparent materials for aircraft glazing - Part 5: Determination of visible light transmission A
14、erospace series - Test methods for transparent materials for aircraft glazing - Part 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 mate
15、rials for aircraft glazing - Part 8: Determination of optical distortion Aerospace series - Test methods for transparent materials for aircraft glazing - Part 12: Determination of linear thermal expansion Aerospace series - Test methods for the flame resistance rating of non-metallic materials Aeros
16、pace series - Burning behaviour of non metallic materials under the influence of radiating heat and flames - Determination of smoke density 1) Aerospace series - Burning behaviour of non metallic materials under the influence of radiating heat and flames - Determination of gas components in the smok
17、e 1) Aerospace series - Quality assurance - EN aerospace products - Qualification procedure EN 3779 e Aerospace series - Polycarbonate Sheet - Dimensions 2) I) published as AECMA Prestandard at the date of publication of this standard 2) In preparation at the date of publication of this standard Pag
18、e 4 prEN 271 9: 2001 3 Defini tionc For the purpose of this standard the definitions in IS0 8402 and following apply. 3.1 Production batch A production batch is the number of sheets produced from one batch of raw material in one machine under the same conditions in continuous production. 3.2 Qualifi
19、cation testing A test or a series of tests to demonstrate that the product sample submitted for qualification satisfies the requirements specified in the standard. 3.3 Acceptance testing Testing to demonstrate that the quality characteristics of a product are in conformity with the quality character
20、istics of the qualified type. 4 Requ i remen ts 4.1 Materials - ultra violet stabilised high optical quality including cockpit transparency constructions and exterior glazings e.g. cabin windows, external light covers; - polycarbonate sheet material which is self extinguishing and has low smoke emis
21、sion, for general use within the interior of the aircraft and which may be filled, unfilled or reinforced; - polycarbonate sheet material utilising particulate, short strand and continuous fibre reinforcement, for use in external and internal structural applications. The material requirements are sp
22、ecified in the relevant EN material standards. The material from which the semi-finished product is produced shall consist basically of a thermoplastic polyester of carbonic acid and dihydroxy-compounds to IS0 7391 -I. 4.2 Dimensions In accordance with EN 3779. 4.3 Quality The semi-finished product
23、shall be of a uniform quality. In certain standards the use of clean recycled traceable polycarbonate material is permissible to the level (percentage) given in the particular material standard. 4.4 Surface structure or texture The surface structure and the texture shall be agreed between the custom
24、er and the supplier. 4.5 Colour Sheets may be supplied either colourless or coloured. The colour shall be agreed between the customer and the supplier. Page 5 prEN 2719: 2001 4.6 4.6.1 Class I Optical classification (for transparent, smooth types only) - Optical deviation not more than 3. - Optical
25、distortion not more than gradient 1: 12. 4.6.2 Class 2 - Optical deviation not more than 6. - Optical distortion not more than gradient 1: 12. 4.6.3 Class 3 - Optical deviation not more than 6. - Optical distortion not more than gradient 1: 8. 4.6.4 Class 4 - Optical deviation not more than IO. - Op
26、tical distortion not more than gradient I : 5. 4.7 Defects Defects unless covered by 4.8 shall be agreed between the customer and the supplier. 4.7.1 Optical defects Requirements with regards to freedom from optical defects are specified particularly for transparent, smooth surface types. Sheets sha
27、ll be clear when viewed through the surface. A slightly yellow or blue tint is acceptable. Sheets shall have a shiny surface and be free from larger scratches and scrapes. For testing to EN 2155-6, the defects listed in 4.8 are permissible, taking into account the number and spatial distribution spe
28、cified in 4.8.1 to 4.8.4. 4.7.2 Physical defects 4.7.2.1 Major defects - Bubbles, foreign matter from 0,8 mm2 to I2 mm2. - Surface faults 0,8 mm2 to I 13 mm2. 4.7.2.2 Minor defects - Hairs, fibres from 0,5 mm and I5 mm in length. - Bubbles, foreign matter from 0,4 mm2 to I 0,8 mm2 - Surface faults f
29、rom 0,4 mm2 to 50.8 mm2. 4.8 Defects criteria 4.8.1 Criteria for Class 1 Sheets to Class 1 shall have no defects other than those specified in 4.7 and no major defects as in 4.7.2.1. AISO there shall be not more than 3 minor defects as in 4.7.2.2 within an area with a radius of 150 mm. 4.8.2 . Crite
30、ria for Class 2 Sheets to Class 2 shall have no defects other than those specified in 4.7 and no major defects as in 4.7.2.1. AISO there shall be not more than 3 minor defects as in 4.7.2.2 within an area with a radius of 150 mm. Page 6 prEN 2719: 2001 4.8.3 Criteria for Class 3 There shall be no de
31、fects larger than those specified in 4.7. Sheets to Class 3 containing major andlor minor defects as in 4.7 shall fulfil the following conditions: - within an area with a radius of 150 mm around a major defect, there shall be no further major defects and not more than 3 minor defects: - within an ar
32、ea with a radius of 150 mm without major defects, the midpoint of which may be located at any point on the sheet, there shall be not more than 8 minor defects. 4.8.4 Criteria for Class 4 There shall be no defects larger than those specified in 4.7. Sheets to Class 4 containing major andlor minor def
33、ects as in 4.7 shall fulfil the following conditions: - within an area with a radius of 150 mm around a major defect, there shall be no further major defects and not more than 5 minor defects; - within an area with a radius of 150 mm without major defects, the midpoint of which may be located at any
34、 point on the sheet, there shall be not more than 8 minor defects. 4.9 Deep drawing qualities Sheets shall be formable without cracks by thermoforming. The formability shall be tested on hemispheres with a deep drawing ratio for diameter: depth of 2: 1. Forming conditions (heating time, temperature)
35、 and preliminary drying temperatures and times shall be specified by the manufacturer of the sheet. 5 Quality assurance See EN 2000 and EN 3042. 5.1 Qualification testing The batch size for qualification testing is specified in the relevant material standard. 5.2 Acceptance testing 5.2.1 Sampling Ra
36、ndom samples for testing in accordance with tables 1 to 3 shall be taken by the manufacturer from each production batch. 5.2.2 Tests The manufacturer shall perform the tests defined as batch acceptance test in the material standard. 5.2.3 Certificate of Conformity For each delivery the manufacturer
37、of the semi-finished polycarbonate product shall demonstrate conformance to the batch acceptance requirements of the relevant material standard by means of a Certificate of Conformity (for example see Annex A) to be submitted to the customer. Page 7 prEN 271 9: 2001 6 Storage Storage conditions shal
38、l be recommended to the customer on his request. 7 Protection and packaging Each sheet shall be provided with a suitable protective covering (plastic film or paper) on both sides, which is easily removable without damaging the surface or transfer of adhesive to the sheet. The protective layer shall
39、protect the surface during delivery, storage, handling and also during cutting to size. Sheets structured on one side may be protected on the smooth side only. Unless otherwise agreed with the customer, all sheets shall be packed separately accordingly to thickness and size. The packaging shall be s
40、uch that the material remains in its original condition and the sheets are protected from damage. 8 Marking Sheets shall be marked approximately every 600 mm on the protective covering. The following data shall be marked: - Designation in accordance with product standard. - Manufacturers name or ide
41、ntity (as defined on qualification). - Production batch number. - Extrusion direction for fibre filled materials. - Dimensions. Page 8 prEN 2719: 2001 Column Table 1 - Physical Tests 1 2 3 4 Number of wecimens for 1 2 Density a No. I Characteristics IS0 1183 2 1 Method A Test to I qualification test
42、ing i acceptance testing *) 7 - Water absorption IS0 62 2 Method 1 Mechanical characteristics I I I 12 13 3 I Glass content Impact strength IS0 179 10 10 Specimen Type 1 I IS01172 I 3 I 3 14 15 16 - 4 1 Deep drawing characteristics I 1ause4.9 I 1 I Thermal characteristics 18 Test speed Modulus of el
43、asticity 5 mm/min 10 Vicat softening temperature Temperature of deflection under I l7 I load Linear thermal expansion coefficient 21 22 I 23 I Method A I 2 2 IS0 306, Method B 50 “C/h 2 EN2155-12 I 1 *) The characteristics to be demonstrated by acceptance testing are specified in the relevant materi
44、al standard. a After 48 h of conditioning at standard atmosphere (23 f 2) “C and relative humidity (50 k 5) % according tc IS0 554. For glass fibre reinforced types only. Only for sheets with a thickness of 14 rnm. Page 9 prEN 271 9: 2001 EN 2155-6 EN 2155-7 Table 2 - Optical Tests Each sheet Each s
45、heet :olumn EN 2155-8 a No. Each sheet 2 Zolumn No. 2 3 4 3 1 2 3 4 Number of specimens for qualification testing acceptance testing *) Characteristics Test to Flammability EN 2310 3 3 Smoke density Section 3.1 without flame exposure EN 2825 - - with flame exposure EN 2825 4 4 Fume gas components a
46、without flame exposure EN 2826 - - with flame exposure EN 2826 4 4 4 5 6 7 8 9 1 Characteristics Refractive index n Visible light transmission Optical defects Optical deviation Optical distortion Number of specimens for qualification testing I acceptance testing *I Test to IS0 489 Method A Test at 2
47、0 “C 1 EN 2155-5 Test to product thickness, thickness shall be stated 1 1 *) The characteristics to be demonstrated by acceptance testing are specified in the relevant material standard. a Angle of incidence 45“ Table 3 - Flammability Tests Page 10 prEN 2719: 2001 Density a Glass content Annex A (in
48、formative) IS0 1183 Method A % IS0 1172 g/cm3 Certificate of Conformity for semi-finished polycarbonate Tensile stress at yield Customer: . . . Contract or order no.: . Product standard: . . Technical specification: EN 271 9 Name and address of manufacturer: Manufacturers material designation: . Qua
49、ntity supplied: Production batch n Test report no.: . . . . Delivery note no.: Date of supply: of materials testing laboratory - IS0 527 Specimen Type 1 B MPa Test speed 5 mm/min Characteristics Tensile stress at yield Modulus of elasticity Test to IS0 527 Specimen Type 1 B IS0 527 Specimen Type 1 B % MPa Impact strength IS0 179 Specimen Type 1 kJ/m2 load Vicat softening temperature Method A IS0 306 “C Method B - Refractive index n io 50 “C/h IS0 489 Method A Required values according to material standard EN Visible light transmission Minimum values from production batch
