1、AECMA STANDARD NORME AECMA AECMA NORM Edition approved for publication Comments should be sent within six months afer the date of publication to Gulledelle 94 AECMA-STAN 2001 -1 0-31 8-1200 BRUXELLES prEN 2436-01 Edition P I October 2001 Material Domain Mr Pays PUBLISHED BY THE EUROPEAN ASSOCIATION
2、OF AEROSPACE INDUSTRIES - STANDARDIZATION (AECMA-STAN) Gulledelle 94 - 8-1200 BRUXELLES - Tel. (+32) 2 775 81 10 - Fax. (+32) 2 775 81 11 ICs: Descriptors: ENGLISH VERSION Aerospace series Paints and varnishes Corrosion resistant chromate-free two component cold curing primer Part O1 : Basic require
3、ments Srie arospatiale Peintures et vernis Peinture primaire anti-corrosion sans chromate deux composants polymrisant temprature ambiante Partie 01: Exigences gnrales Luft- und Raumfahrt Anstrichstoffe Korrosions bestndiger Zwei komponenten-Grundanstrich, kalthrtend chromatfrei Teil 01: Grundlegend
4、Anforderungen This “Aerospace 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 technically approved by the ex
5、perts of the concerned Domain following member comments. Subsequent to the publication of this Prestandard, the technical confent shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and review
6、 by users and formal agreement of AECMA-STAN it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. Page 2 prEN 2436-01 : 2001 Blank page Page 3 prEN 2436-01 : 2001 O Introduction This standard is pari of a series of EN non-metallic materia
7、ls standards for aerospace applications. The general organisation of this sedes is described in EN 4385. This standard is a level 3 document as defined in EN 4385. 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
8、 component, cold curin polyurethane, corrosion resistant primer which can be used with or withoi applications. chromate-free epoxy or a finish for aerospace The properties specified in this standard are obtained on defined aluminium alloy test pieces prepared in accordance with EN 3837 Process A and
9、 IS0 3270. 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 requirements of this standard are met. 2 Normative references This European St
10、andard 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 these publications apply
11、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 IS0 3270 Paints and varnishes and their raw materials - Temperature and humidities for IS0 3696 EN 2334 EN 2379 EN 3837 EN 3840
12、EN 4385 EN 7000-9 Paints and varnishes - Examination and preparation of samples for testing 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 a
13、ssessment of non-metallic materials 1) Aerospace series - Paints and varnishes - Nature and method for surface preparation of test pieces in aluminium alloys 1) Aerospace series - Paints and varnishes - Technical specification 1) Aerospace series - Non-metallic materials - General organisation of st
14、andardisation - Links between types of standards 1) Aerospace series - Non-metallic materials - Rules for the drafting and presentation of material standards - Part 9: Paints and varnishes 1) e i) Published as AECMA Prestandard at the date of publication of this standard Page 4 prEN 2436-01 : 2001 1
15、 .O01 1 .O02 1 .O03 3 Not applicable Def i n it ions Material description Formulation Form and method of production 4 Classification The primer is classified according to the nature of the most typical chemical reaction that occurs between the two components: 1 .O96 1 .O97 Type A: epoxy - (reaction
16、between an epoxy resin and an activator with amino functional groups). Type B: polyurethane - (reaction between an hydroxyl functional resin and a polyisocyanate activator). Identification marking Flash point 5 Batch release and qualification testing 5. I Batch release testing For batch acceptance t
17、he tests marked with an * in tables 2 to 5 shall be performed. 5.2 Qualification tests For product qualification, all tests mentioned in this standard, in the tables 1 to 5, shall be performed. Table 1 - General requirements I 1 .O94 I Designation I 1 .O95 I Packaging I 1.098 1 Health and safetv Two
18、 component cold curing chromate-free primer Base - a base containing essentially chromate corrosion inhibitor associated, or not, with pigments and fillers dispersed in a mixture of resins and solvents. Activator - an activator solution Thinner - if required These components shall be mixed in simple
19、 whole number proportions, by volume or by weight, in accordance with the manufacturers instructions. EN 3840 Dry film thickness of (20 f 5) j.un See EN 3840. See EN 3840. IS0 3270 for 7 days before testing unless otherwise specified. See EN 3840. Chromate-free primer. EN 2436-01 Type A or Type B Se
20、e EN 3840. See EN 3840. See EN 3840. See EN 3840. Page 5 prEN 2436-01 : 2001 6s 7 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 defect free film. 4 5 EN 3837
21、Process A Primer to this standard I EN 2334 Pickle 7 Paint film shall show an opaque even finish, free from runs, sags, wrinkling, pinholing or other defect. EN 3840 1 6 Test5 base + activator + thinner 7 ml EN 3840 V s 30 after 4 h 6 7 base + activator + thinner sorPas I I 2 x initial value after 4
22、 h 1 EN 3840 Test 10 7 Pm 5 30 EN 3840 1 EN 3840 Test49 1 EN 3840 Test3 Table 2 - Physical and chemical characteristics 2.014- Condition I 1 IISO1513 * 2.01 1 Application properties and finish 1 None I2024-T3 clad 3 I EN 3837 -A3 * 2.034 Sedimentation rating 2.01 2 Pot life * I I Test 20 followed bv
23、 Test 8 a or Test 9 a K840 viscosity * 2.029 1 I Test 8 a or Test 9 a 6base + activator + thinner 7 Isorpas I f 10 % bc Fineness of grind * 2.035 6 I base + activator 2.027 Non volatile matter . 1 ITest1 71 I base I activator 2.027 Volatile organic compound (VOC) content 6 I base + activator + thinn
24、er 7 Is/! 1 I reference value 2.057 Density 6 Ibase * continued Page 6 prEN 2436-01 : 2001 1 Table 2 - Physical and chemical characteristics (concluded) EN 3840 Test4 e * Flash point - 2.057 g/cm3 (fl bc (fi bc EN 3840 1 Test7 2.036 2.041 2.041 2.041 Surface dry time 2.999 7 base activator thinner “
25、C 2 reference value 2 reference value 2 reference value EN 3840 1 Test21 3 EN3837-Ap 2024-T3 clad Dens i ty hydrometer 4 5 EN 3837 Process A Primer to this standard I EN 2334 Pickle I 6 I activator + thinner 6 7h Drying time - Print free 1 3 4 5 6 7h Through dry time 1 3 171 I activator I thinner IS
26、03270 d 51 EN 3840 Test22 EN 3837-A2 2024-T3 clad EN 3837 Process A Primer to this standard IS03270 EN 2334 Pickle I s 4 using a load of 1 O00 g EN 3840 Test23 EN 3837-A2 I2024-T3 clad 4 5 EN 3837 Process A Primer to this standard I EN 2334 Pickle 6 7h IS03270 I16 * Notes a e Page 7 prEN 2436-01: 20
27、01 AE Table 3 - Physic0 - chemical characteristics If specified shall match the colour specified by the user. x EN 3837 - A2 EN 3837 Process A 3.084 or 3.053 2024-T3 clad EN 2334 Pickle 3.088 or 3.083 Gloss units 4.082 5 20 4.076 EN 3837 - A2 EN 3837 Process A 2olour I EN 3840 I 2024-T3 clad EN 2334
28、 Pickle I 1 (Test30 3 IEN3837-A2 12024-T3 clad I 4 IEN3837ProcessA EN 2334 Pickle 5 I Primer to this standard 6 7 - * loss SO“ ti- I I 7 * id hesion * Scratch resistance 7 * Table 4 - Mechanical characteristics EN 3840 1 Test 24 EN 3837 - A2 12024-T3 clad EN 3837 Process D Primer to this standard I
29、Degreased IS0 3270 Classification O EN 3840 Test 29 Page 8 prEN 2436-01 : 2001 EN 3837 - A2 EN 3837 Process A Table 5 - Environmental characteristics 2024-T3 clad EN 2334 Pickle 5.101 :orrosion - Test 5.1 O0 7 No blistering, softening, lifting or other film defect Test 24 Classification I 1 Test 29
30、2 1 200 g metal not exposed EN 3840 5.107 I 3 ,esistanCe to ieutral salt spray - 5.999 Test42 EN3837-Ai I2024-T3 unclad ?esistanCe to luids - a 4 5 Nater iehaviou r EN 3837 Process A Primer to this standard, panel scribed to substrate immediately before testing. I EN 2334 Pickle ti- Votes EN 3837 -
31、A2 I2024-T3 clad 6 I O00 h 7 No blistering, detachment or pitting. No corrosion more than 2 mm from the scribe a Additional fluids shall be subject of agreement between manufacturer and the user. EN 3837 Process A Primer to this standard, panel scribed to substrate immediately before testing. tri-n-
32、butyl phosphate to EN 2379 G2 for 24 h at (70 f 2) OC a No blistering, softening, lifting or other film defect Test 29 2 1 200 g metal not exposed EN 3840 Test 34 I EN 2334 Pickle 13 I 14 - Primer to this standard, panel scribed to substrate immediately before testing. water to IS0 3696 Grade 2 for 336 h e I 0
