1、AECMA STANDARD NORME AECMA AECMA NORM prEN 2434-01 Edition P 1 October 2001 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES - STANDARDIZATION (AECMA-STAN) Gulledelle 94 - 6-1200 BRUXELLES - Tel. (+32) 2 775 81 10 - Fax. (+32) 2 775 811 1 ICs: Descriptors: ENGLISH VERSION Aerospace seri
2、es Paints and varnishes Two component cold curing polyurethane finish Part O1 : Basic requirements Srie arospatiale Peintures et vernis Peinture de finition polyurthane, deux composants polymrisant temprature ambiante Partie 01: Exigences gnrales Luft- und Raumfahrt Anstrichstoffe Zwei komponenten P
3、olyurethan-Decklack kalthrtend Teil 01: Grundlegende Anforderungen 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
4、Industry. It has been technically 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 fhat interchangeability is affected, physically or functionally, without re-identifi
5、cation of the standard. After examination and review by users and formal agreement of AECMA-STAN it will be submitted as a draft European Standard to CEN (European Commiftee for Standardization) for formal vote. Nota -Extra copies can be supplied by B.N.A.E. - Technopolis 54 - 199, rue Jean-Jacques
6、Rousseau - 92138 ISSY-LES-MOULINEAUX CEDEX I I Edition approved for publication I Comments should be sent within six months after the date of publication to I 2001-10-31 AECMA-STAN Gulledelle 94 Material Domain Mr Pays 8-1200 BRUXELLES I aecma 200 Page 2 prEN 2434-01 : 2001 Blank page a Page 3 prEN
7、2434-01 : 2001 O In trod ucti on Definition of subcase numbering in tables 2 to 5 is given in EN 7000-9. 1 Scope This standard specifies the basic requirements for a two component polyurethane finish, available in a range of colours and levels of gloss, to be applied over a primer for aerospace appl
8、ications. The properties specified in this standard are obtained on defined aluminium alloy test pieces prepared in accordance with EN 3837 Procedure A and IS0 3270 and painted with primer to prEN 2435-02. The ability of the material to be used for a specific application (e.g. alternative substrate,
9、 alternative primer, specific drying conditions etc.) shall be determined by supplementary tests to confirm that the requirements of this standard are met. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative re
10、ferences 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 incorporated in it by amendment or revision. For undated references t
11、he latest edition of the publication referred to applies. IS0 1513 IS0 3270 IS0 3696 EN 2334 EN 2379 EN 2435-01 EN 2435-02 EN 3837 EN 3840 EN 7000-9 Paints and varnishes - Examination and preparation of samples for testing Paints and varnishes and their raw materials - Temperature and humidties for
12、conditioning and testing Water for analytical laboratory use - Specification and test methods Aerospace series - Chromic-sulphuric acid pickle of aluminium and aluminium alloys Aerospace series - Fluids for assessment of non-metallic materials 1) Aerospace series - Paints and varnishes - Corrosion r
13、esistant chromated two component cold curing primer - Part 01: Minimum requirements Aerospace series - Paints and varnishes - Corrosion resistant chromated two component cold curing primer - Part 02: High corrosion resistance 1) Aerospace series - Paints and varnishes - Nature and method for surface
14、 preparation of test pieces in aluminium alloys 1) Aerospace series - Paints and varnishes - Technical specification 1) Aerospace series - Non-metallic materials - Rules for the drafting and presentation of material standards - Part 9: Paints and varnishes 1) 1) Published as AECMA Prestandard at the
15、 date of publication of this standard Page 4 prEN 2434-01 : 2001 I .O02 1 .O03 3 Definitions Formulation Form and method of production For the purposes of this standard the following definition applies. Gloss finish is defined as 2 80 units measured at 60“ according to EN 3840 test 27. 1 .O96 1 .O97
16、 4 Classification Not applicable Identification marking Flash point 5 5.1 Batch release testing For batch acceptance the tests marked with an * in tables 1 to 5 shall be performed. Batch release and qualification testing 5.2 Qualification tests For product qualification, all tests mentioned in this
17、standard, in the tables 1 to 5, shall be performed. Table I - General requirements I 1 .O01 1 Material description I 1 .O04 I Technical sDecification I 1,009 I Atmkation and use I 1.010 Istorage I 1.011 I Shelf life I .O1 3 Processing conditions Il _ I 1 .O93 I Quality assurance I 1 .O94 I Designati
18、on I 1.095 !Packaging I .O98 I Health and safety solvents and pigments. Activator - a polyisocyanate activator solution Thinner - if rewired - These components shall be mixed in simple whole number proportions, by volume or by weight, in accordance with the manufacturers instructions. See EN 3840. D
19、ry film thickness of (50 i 5) pm See EN 3840. See EN 3840. IS0 3270 for 7 days before testing unless otherwise specified. Finish is applied to the primer following drying of the primer for 4 h to 16 h. See EN 3840. Polyurethane Finish EN 2434-01 See EN 3840. See EN 3840. I - See EN 3840. See EN 3840
20、. I Page 5 prEN 2434-01: 2001 :ondition * Table 2 - Physical and chemical characteristics 1 IS01513 6 7 As received in original container Shall be free from extraneous matter and show no skinning, gelling, hard settlement or other defect which will prevent satisfactory application to produce a defec
21、t free film. e e 3 4 - 2.014 EN 3837-A, 2024-T3 clad EN 3837 Process A EN 2334 Pickle 2.01 1 * Sedimentation .sting 2.034 2.01 2 5 7 EN 2435-01 primer + finish to this standard Paint film shall show an opaque even finish, free from runs, sags, wrinkling pinholing or other defect. EN 3840 base + acti
22、vator + thinner I Test5 6 7 ml 1 V = 5 30 after 4 h 2.035 2.029 * 7 Pm I Gloss finish I 15, other gloss levels I 30 I discosity EN 3840 1 6 Test 8 a or Test 9 a base + activator + thinner 7 sorPas 10 %bC Non volatile EN 3840 matter 1 Test 1 7 base activator % +2bc +2bc Volatile organic EN 3840 compo
23、und 1 Test49 (“Oc) Ontent 6 base + activator + thinner Density EN 3840 7 g/l 1s reference value 1 Test3 2.027 * :neneSS of grind 2.027 6 7 sorPas 1s 2 x initial value after 4 h 1 Test 10 base + activator + thinner EN 3840 2.057 . 6 * 7 Density hydrometer 1 6 2.057 base g/cm3 pee EN 3840 Test4 activa
24、tor + thinner * 4pplication xoperties md finish _ 7 activator thinner g/cm3 f2bc +2bc II ot life I EN 3840 1 I Test 20 followed bv Test 8 a or Test 9 a I 6 1 base +activator continued Page 6 prEN 2434-01 : 2001 Flash point EN 3840 I Test7 7 base activator thinner “C 2 reference value 2 reference val
25、ue 2 reference value EN 3840 1 3 4 Test21 EN3837-Az 2024-T3 clad EN 3837 Process A EN 2334 Pickle Drying time p ri n t-free 6 IS03270 7h 153 d EN 3840 1 Test22 4 5 6 EN 3837 Process A EN 2435-01 primer +finish to this standard IS03270 1 EN 2334 Pickle Through dry time EN 3840 1 Test23 3 EN3837-Az 20
26、24-T3 clad 4 EN 3837 Process A EN 2334 Pickle 5 6 EN 2435-01 primer +finish to this standard IS03270 Notes a Test 8 shall be used for non-thixotropic paints and test 9 for thixotropic paints. The deviation is that compared to the reference value. The reference value is that established during qualif
27、ication. Unless otherwise specified. Test could also be used for activator and thinner if required. e 1 3 EN 3840 Test30 EN 3837-A2 I2024-T3 clad 4 5 6 EN 3837 Process A EN 2435-01 primer + finish to this standard IS03270 I EN 2334 Pickle 1 EN 3840 Test27 * 5 6 IS03270 7 Gloss units I shall match th
28、e gloss specified EN 2435-01 primer + finish to this standard Table 2 - Physical and chemical characteristics (concluded) 2.036 2.041 Surface dry time I 5 I EN 2435-01 Drimer + finish to this standard 2.041 13 1 EN 3837 - A2 I2024-T3 clad I 7 Ih 116 2.041 2.999 Table 3 - Physic0 - chemical character
29、istics 3.084 or 3.053 Colour * I 7 IAE I shall match the colour specified 3.088 or 3.083 Gloss 60“ 1 3 I EN 3837 -A? I2024-T3 clad I 4 I EN 3837 Process A I EN 2334 Pickle Page 7 prEN 2434-01: 2001 Adhesion Table 4 - Mechanical characteristics EN 3840 1 Test24 3 EN3837-Az 2024-T3 clad 4 EN 3837 Proc
30、ess A EN 2334 Pickle 5 6 IS03270 EN 2435-01 primer + finish to this standard I 7 I 3 4.082 Classification 2 1 EN 3840 Test29 EN3837-A? 12024-T3 clad 4.076 * 5.1 O0 4 EN 3837 Process A I EN 2334 Pickle 5 EN 2435-01 primer + finish to this standard 6 IS03270 7 2 1 500 g primer not exposed 5.101 3 4 5
31、6 5.106 EN3837-& 2024-T3 clad EN 3837 Process A EN 2435-01 primer + finish to this standard, panel scribed to substrate immediately before testing. tri-n-butvl phosphate to EN 2379 G2 for 100 h at (70 f 2) OC a EN 2334 Pickle 5.999 7 1 No blistering, softening, lifting or other film defect Test 29 2
32、 1 200 g primer not exposed EN 3840 Test34 Scratch resistance _ 3 EN3837-A, 4 EN 3837 Process A 2024-T3 clad EN 2334 Pickle 5 Table 5 - Environmental characteristics EN 2435-01 primer + finish to this standard, panel scribed to substrate immediately before testing. Resistance to fluids- a 7 1 3 Wate
33、r behaviour No blistering, softening, lifting or other film defect Test 24 Classification I1 Test 29 2 1 200 g primer not exposed EN 3840 Test40 EN 3837-Az I2024-T3 clad Artificial weathering 5 6 7 Notes EN 2435-01 primer + finish to this standard UVB 313, 4h light4 h humidityltotal 500 h Test 27 I 40 % reduction from initial value. Test 30 AE I 4 units I EN 3840 1 Test35 6 I water to IS0 3696 Grade 2 for 336 h 4 I EN 3837 Process A I EN 2334 Pickle
