1、8 e Edition approved for publication Comments should be sent within six months after the date of publication to AECMA STANDARD NORME AECMA AECMA NORM Material Domain prEN 2434-03 Edition P 1 October 2001 PUBLISHEDBYTHE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES - STANDARDIZATION (AECMA-STAN) Gulle
2、delle 94 - 6-1200 BRUXELLES - Tel. (+32) 2 775 81 10 - Fax. (+32) 2 775 81 11 ICs: Descriptors: ENGLISH VERSION Aerospace series Paints and varnishes Two component cold curing polyurethane finish Part 03: Flexible and high fluid resistance for interior Srie arospatiale Peintures et vernis Peinture d
3、e finition polyurthane, deux composants polymrisant temprature ambiante Partie 03: Flexible rsistance au fluide pour intrieur Luft- und Raumfahrt Anstrichstoffe Zwei kom ponenten Polyurethan-Decklack ka1 t hrtend Teil 03: Elastisch und medienbestndig fr Innen This “Aerospace Series“ Prestandard has
4、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 technically approved by the experts of the concerned Domain following member comment
5、s. 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. After examination and review by users and formal agreement of AECMA-STAN it will b
6、e submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. 2001 -10-31 AECMA-STAN Gulledelle 94 I B-1200 BRUXELLES Mr Pays I I aecma 20C Page 2 prEN 2434-03: 2001 Blank page Page 3 prEN 2434-03: 2001 O Introduction This standard is part of a series of E
7、N non-metallic materials standards for aerospace applications. The general organisation of this series is described in EN 4385. This standard is a level 3 document as defined in EN 4385. Definition for subcase numbering in tables 2 to 5, is given in EN 7000-9. 1 Scope This standard specifies the req
8、uirements for a two component polyurethane finish, in a limited range of colours, to be applied over a primer for interior aerospace applications, offering flexibility and high resistance to fluid attack. The properties specified in this standard are obtained on defined aluminium alloy test pieces p
9、repared in accordance with EN 3837 and IS0 3270 and painted with primer to prEN 2435-03. The ability of the material to be used for a specific application (e.g. alternative substrate, alternative primer, specific drying conditions etc.) shall be determined by supplementary tests to confirm that the
10、requirements of this standard are met. 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 next and the publications are listed hereafter. For dated referen
11、ces, 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 1513 Paints and varnishes - Examination and preparation
12、 of samples for testing IS0 3270 Paints and varnishes and their raw materials - Temperature and humidities for conditioning and testing IS0 3696 Water for analytical laboratory use - Specification and test methods EN 2334 Aerospace series - Chromic-sulphuric acid pickle of aluminium and aluminium al
13、loys EN 2379 Aerospace series - Fluids for assessment of non-metallic materials 1) EN 2435-03 Aerospace series - Paints and varnishes - Corrosion resistant chromated two component cold curing primer - Part 03: High corrosion and fluid resistance ) EN 3837 Aerospace series - Paints and varnishes - Na
14、ture and method for surface preparation of test pieces in aluminium alloys 1) EN 3840 Aerospace series - Paints and varnishes -Technical specification 1) EN 4385 Aerospace series - Non-metallic materials - General organisation of standardisation - Links between types of standards 1) EN 7000-9 Aerosp
15、ace series - Non-metallic materials - Rules for the drafting and presentation of material standards - Part 9: Paints and varnishes 1) e 1) Published as AECMA Prestandard at the date of publication of this standard Page 4 prEN 2434-03: 2001 1 .O01 Material description 1 .O02 Formulation 1 .O03 Form a
16、nd method of production 3 Definitions Two component cold curing polyurethane coating Base - a base containing an hydroxyl functional resin, solvents and pigments. Activator - a polyisocyanate activator solution Thinner - if required These components shall be mixed in simple whole number proportions,
17、 by volume or by weight, in accordance with the For the purposes of this standard. Gloss finish is defined as 2 80 units measured at 60“ according to EN 3840 test 27. 1.093 1 .O94 4 Classification Not applicable Quality assurance See EN 3840. Designation Polyurethane Finish 5 Batch release and quali
18、fication testing 1 .O95 1 .O96 1 .O97 1 .O98 5.1 Batch release testing For batch acceptance the tests marked with an * in tables 1 to 5 shall be performed. Packaging See EN 3840. Identification marking See EN 3840. Flash point See EN 3840. Health and safety See EN 3840. 5.2 Qualification tests For p
19、roduct qualification, all tests mentioned in this standard, in the tables 1 to 5, shall be performed. Table 1 - General requirements I 1.011 1 Shelf life 1 .O1 3 Processing conditions I1 manufacturers instructions. See EN 3840. Dry film thickness of (30 f 5) brn See EN 3840. See EN 3840. IS0 3270 fo
20、r 7 days before testing unless otherwise specified. Finish is applied to the primer following drying of the primer for 4 h to 16 h. I I - I EN-2434-03 I Page 5 prEN 2434-03: 2001 ;ondition 1 6 IS0 1513 As received in original container 7 Shall be free from extraneous matter and show no skinning, gel
21、ling, hard settlement or other defect which will prevent satisfactory application to produce a defect free film. * I 1 None 3 4 EN3837-Ap 2024-T3 clad EN 3837 Process A or B EN 2334 Pickle or CAA 7 Paint film shall show an opaque even finish, free from runs, sags, wrinkling, pinholing or other defec
22、t. EN 3840 I 6 Test5 base + activator + thinner 1 EN 3840 Test 20 followed by Test 8 a or Test 9 a 1 6 7 Test 10 base + activator Pm EN 3840 Gloss finish 2 15, other gloss levels I 30 1 6 Test 8 a or Test 9 a base + activator + thinner 1 EN 3840 Test 1 1 EN 3840 Test49 7 gil 1s reference value EN 38
23、40 6 7 base gicm3 & 2 bee Table 2 - Physical and chemical characteristics 2.01 4 * 2.01 1 iipiication xoperties and finish 5 I EN 2435-03 primer + finish to this standard 2.034 Sedimentation *sting 2.012 Pot life 6 1 base + activator + thinner 7 Isorpas I I 2 x initial value after 4 h * 2.035 Finene
24、ss of grind * I EN 3840 2.029 viscosity 2.027 Non volatile matter I activator I% II2 bc lk2bc Volatile organic compound (VOC) content 2.027 6 I base + activator + thinner 2.057 Density * TheTest3 continued Page 6 prEN 2434-03: 2001 3ensity 7ydrometer 2.057 EN 3840 1 Test4 6 activator + thinner 7 I a
25、ctivator I thinner 2.036 , g/cm3 2.041 - Flash point 2.041 EN 3840 I Test7 2.041 7 2.999 base activator thinner “C 2 reference value 2 reference value 2 reference value Surface dry time * t- EN 3840 1 Test21 3 EN3837-A2 I2024-T3 clad Drying time print-free EN 3840 1 Test22 EN 3837 - A2 EN 3837 Proce
26、ss A or B 2024-T3 clad EN 2334 Pickle or CAA r4IEN 3837 Process A or B I EN 2334 Pickle or CAA Notes I 5 I EN 2435-03 Drimer + finish to this standard - 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 ref
27、erence value is that established during qualification. Unless otherwise specified. Test could also be used for activator and thinner if required. e 1 6 Ils03270 r7Jh IS1 t+ I 5 I EN 2435-03 primer + finish to this standard 6 7 - Through dry time - 1 3 4 5 6 - - - - IS0 3270 h Is 6 EN 3840 Test 23 EN
28、 3837 - A2 I 2024-T3 clad EN 3837 Process A or B EN 2435-03 primer + finish to this standard IS0 3270 I EN 2334 Pickle or CAA . Page 7 prEN 2434-03: 2001 Colour Table 3 - Physico - chemical characteristics EN 3840 1 Test30 3 EN3837-Ap I2024-T3 clad 4 EN 3837 Process A or B I EN 2334 Pickle or CAA e
29、e 5 - 3.084 or 3.053 EN 2435-03 primer + finish to this standard 3.088 or 3.083 6 7 4.082 4.076 4.082 4.080 IS03270 BE EN 3840 I shall match the colour specified 4.082 1 3 4 5 6 7 Test27 EN3837-Ap I2024-T3 clad EN 3837 Process A or B EN 2435-03 primer + finish to this standard IS03270 Gloss units I
30、EN 2334 Pickle or CAA I shall match the gloss specified * Gloss 60“ 5 6 7 1 3 4 5 6 7 EN 2435-03 primer + finish to this standard IS03270 no detachment or cracking EN 3840 Test46 EN3837-A2 I2024-T3 clad EN 3837 Process A EN 2435-03 primer + finish to this standard IS03270 2 4 mm no detachment or cra
31、cking 1 EN 2334 Pickle * Table 4 - Mechanical characteristics * I 7 12 I 500 g primer not exposed I Slow deformation * Page 8 prEN 2434-03: 2001 EN 3840 I 5.102 Test 38 1 5.102 a treatment shall be the subject of agreement between manufacturer and user. Additional fluids shall be subject of agreemen
32、t between the manufacturer and the user. Pre-treatments specified shall be used for qualification testing. For batch testing pre- b 5.100 4 5 5.101 EN 3837 Process A EN 2435-03 primer + finish to this standard I EN 2334 Pickle 5.100 1 3 4 5.999 Test 38 EN3837-A2 2024-T3 clad EN 3837 Process A EN 233
33、4 Pickle k ieat 1 Table 5 - Environmental characteristics EN 3840 Test37 3 4 EN3837-A2 2024-T3 clad EN 3837 Process A EN 2334 Pickle EN 3837 - A, I2024-T3 clad Resistance to fluids - a 5 EN 2435-03 primer + finish to this standard 6 (40 f 2) OC, (100 f 5) % r.h. 500 h 7 No blistering, softening, lif
34、ting or other film defect Test 24 I 1 EN 3840 1 Test35 3 EN 3837-Ap I2024-T3 clad 150 OC 24 h Test 46 2 2,5 mm (IS0 3270) EN 3840 I A B tri-n-butyl phosphate to EN 2379 G2 for 1000 h (IS0 3270) a tri-n-butyl phosphate to EN 2379 G2 for 1000 h at (70 f 2) OC a I 5 I EN 2435-03 mimer + finis= this sta
35、ndard 1 3 1 61-40C24 h Test34 EN3837-Ai I2024-T3 clad I 7 I Test 46 2 4 mm (IS0 3270) 4 5 Humidity EN 3837 Process A EN 2435-03 primer + finish to this standard, panel scribed to substrate I EN 2334 Pickle Water behaviour 1 4 I EN 3837 Process A or B I EN 2334 Pickle or CAA 5 EN 2435-03 primer + finish to this standard, panel scribed to substrate II immediatelv before testina. 6 7 - - 6 7 - immediately before testing. water to IS0 3696 Grade 2 for 168 h at (40 5 2) OC No blistering, softening, lifting or other film defect Test 24 Classification I 1 Test 29 1 1500 c1 primer not exposed Notes
