1、AECMA STANDARD NORME AECMA AECMA NORM prEN 4406 Edition P 2 March 2005 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES - STANDARDIZATION Gulledelle 94 - B-1200 Brussels - Tel. + 32 2 775 8110 - Fax. + 32 2 775 8111 - www.aecma-stan.orgICS: Supersedes edition P 1 October 2001 Descriptor
2、s: ENGLISH VERSION Aerospace series Paints and varnishes Two component cold curing polyurethane coating Abrasion resistant Srie arospatiale Peintures et vernis Peinture de finition polyurthane deux composants polymrisant temprature ambiante Rsistance labrasion Luft- und Raumfahrt Anstrichstoffe Zwei
3、komponenten Polyurethan-Decklack Kalthrtend Abriebfest This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA-STAN (The European Association of Aerospace Industries - Standardization). It is published for the needs of the European Aerospace Industry. It has been tech
4、nically 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. Af
5、ter examination and review by users and formal agreement of AECMA-STAN, it will be submitted as a draft European Standard (prEN) to CEN (European Committee for Standardization) for formal vote and transformation to full European Standard (EN). The CEN national members have then to implement the EN a
6、t national level by giving the EN the status of a national standard and by withdrawing any national standards conflicting with the EN. Edition approved for publication 31 March 2005 Comments should be sent within six months after the date of publication to AECMA-STAN Non-metallic Material Domain Cop
7、yright 2005 by AECMA-STAN Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 2 prEN 4406:2005Foreword This standard was reviewed by the Domain Techni
8、cal Coordinator of AECMA-STANs Non-metallic Material Domain. After inquiries and votes carried out in accordance with the rules of AECMA-STAN defined in AECMA-STANs General Process Manual, this standard has received approval for Publication. Contents Page Introduction 3 1 Scope 3 2 Normative referen
9、ces. 3 3 Definitions. 4 4 Classification. 4 5 Batch release and qualification testing. 4 5.1 Batch release testing 4 5.2 Qualification tests 4 Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking
10、 permitted without license from IHS-,-,-Page 3 prEN 4406:2005Introduction This standard has been prepared in accordance with TR 7000-9. 1 Scope This standard specifies the requirements for a two component polyurethane, abrasion resistant coating available in a range of colours and levels of gloss, t
11、o be applied over a primer for aerospace applications offering resistance to wear on sliding surfaces and resistance to impact from solid particles. The properties specified in this standard are obtained on defined aluminium alloy test pieces prepared in accordance with EN 3837 Procedure A and ISO 3
12、270 and painted with primer to EN 2435. The ability of the material to be used for a specific application (eg 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
13、references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 1513, Paints and varnishes Examina
14、tion and preparation of samples for testing. ISO 3270, Paints and varnishes and their raw materials Temperatures and humidities for conditioning and testing. ISO 3696, Water for analytical laboratory use Specification and test methods EN 2334, Aerospace series Chromic-sulphuric acid pickle of alumin
15、ium and aluminium alloys. EN 2379, Aerospace series Fluids for assessment of non-metallic materials 1). EN 2434 (all parts), Aerospace series Paints and varnishes Two component cold curing polyurethane finish 1). EN 2435 (all parts), Aerospace series Paints and varnishes Corrosion resistant chromate
16、d two component cold curing primer 1). EN 3837, Aerospace series Paints and varnishes Nature and method for surface preparation of test pieces in aluminium alloys 1). EN 3840, Aerospace series Paints and varnishes Technical specification 1). TR 7000-9, Aerospace series Non-metallic materials Rules f
17、or the drafting and presentation of material standards Part 9: Paints and varnishes 2). STANAG 4477, Specification for paints and paint systems, resistant to chemical agents and decontaminants, for the protection of aerospace military equipment. 1) Published as AECMA Prestandard at the date of publi
18、cation of this standard. 2) Published as AECMA Technical Report at the date of publication of this standard. Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IH
19、S-,-,-Page 4 prEN 4406:20053 Definitions None applicable. 4 Classification The coating is classified according to the degree of chemical resistance required. Type A : resistant to phosphate ester hydraulic fluid; Type B : for military use. 5 Batch release and qualification testing 5.1 Batch release
20、testing For batch acceptance the tests marked with an * 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. NOTE If the product is formulated by the addition of abrasion resisting ingredient to a produ
21、ct already approved to the appropriate part of EN 2434 without change to the base resin or activator components then only tests in the Tables 1 to 4 need be performed to prove compliance with this standard. Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS und
22、er license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 5 prEN 4406:2005Table 1 General requirements Characteristic number Characteristic Requirements 1.001 Material description Two component cold curing polyurethane coating with resistance to abr
23、asion 1.002 Formulation Base : a base containing an hydroxyl functional resin, solvents and pigments to give the required colour and gloss and other ingredients to give abrasion resistance. Activator : a polyisocyanate activator solution. Thinner : if required. 1.003 Form and method of production Th
24、ese components shall be mixed in simple whole number proportions, by volume or by weight, in accordance with the manufacturers instructions. 1.004 Technical specification EN 3840 1.009 Application and use Dry film thickness of (200 25) m 1.010 Storage stability See EN 3840. 1.011 Shelf life See EN 3
25、840. 1.013 Drying conditions ISO 3270 for seven days before testing unless otherwise specified. Polyurethane abrasion resistant coating is applied to the primer following drying of the primer for 4 h to 16 h. 1.093 Quality assurance See EN 3840. 1.094 Designation Polyurethane abrasion resistant coat
26、ing. EN 4406 - Type A or Type B. 1.095 Packaging See EN 3840. 1.096 Identification marking See EN 3840. 1.097 Flash point See EN 3840. 1.098 Health and safety See EN 3840. Table 2 Physical and chemical characteristics Characteristic number Characteristic Requirement2.008 1 ISO 1513 Freedom from defe
27、cts 6 As received in original container. * 7 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. The base component and activator component shall each be in a condition such tha
28、t stirring easily produces a smooth, uniform consistency which, after mixing in the proportions specified by the manufacturer, shall be suitable for spray application. 2.009 Application and use 1 None 3 EN 3837 - A2 2024-T3 clad 4 EN 3837 Proc. A or B or C EN 2334 Pickle or CAA or CCC 5 EN 2435-4 pr
29、imer + coating to this standard 7 Paint film shall show an opaque even finish, free from runs, sags, wrinkling, pinholing or other defect. continued Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or netw
30、orking permitted without license from IHS-,-,-Page 6 prEN 4406:2005Table 2 (concluded) Characteristic number Characteristic Requirement 2.107 EN 3840 Reactivity viscosity (flow time) 1 Test 5 6 base + activator + thinner *7 Ml 2 initial value after 4 h 2.104 EN 3840 Composition Non volatile matter 1
31、 Test 1 7 Base Activator % 2 a, b 2 a, b2.104 EN 3840 1 Test 49 Composition Volatile organic content 6 base + activator + thinner 7 g/l reference value a, b2.301 Density EN 3840 1 Test 3 6 Base *7 g/cm3 2 a, b, c2.301 EN 3840 Density hydrometer 1 Test 4 6 activator + thinner *7 Activator Thinner g/c
32、m3 2 a, b 2 a, b2.109 Flammability Flash point EN 3840 1 Test 7 *7 Base Activator Thinner C reference value b reference value b reference value b2.106 EN 3840 Reactivity Through dry 1 Test 23 3 EN 3837 - A2 2024-T3 clad 4 EN 3837 Proc. A or B or C EN 2334 Pickle or CAA or CCC 5 EN 2435-4 primer + co
33、ating to this standard 6 ISO 3270 *7 H 16 2.999 Notes a The deviation is that compared to the reference value. b The reference value is that established during qualification. c Test could also be used for activator and thinner if required. Copyright Association Europeene des Constructeurs de Materie
34、l Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 7 prEN 4406:2005Table 3 Physico - chemical characteristics Characteristic number Characteristic Requirement 3.111 EN 3840 Optical properties Colour 1 Test 30
35、3 EN 3837 - A2 2024-T3 clad 4 EN 3837 Proc. A or B or C EN 2334 Pickle or CAA or CCC 5 EN 2435-4 primer + coating to this standard 6 ISO 3270 *7 dE Shall match the colour specified by the purchaser. 3.111 EN 3840 Optical properties Specular gloss 1 Test 27 60gloss meter 3 EN 3837 - A2 2024-T3 clad 4
36、 EN 3837 Proc. A or B or C EN 2334 Pickle or CAA or CCC 5 EN 2435-4 primer + coating to this standard 6 ISO 3270 *7 Gloss units Shall match the gloss specified by the purchaser. Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for
37、ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 8 prEN 4406:2005Table 4 Mechanical characteristics Characteristic number Characteristic Requirement4.304 EN 3840 Adhesion Cross-cut 1 Test 24 3 EN 3837 - A2 2024-T3 clad 4 EN 3837 Proc. A or B or C EN 2334 Pickle or CAA
38、or CCC 5 EN 2435-4 primer + coating to this standard 6 ISO 3270 7 Classification 1 4.304 EN 3840 Adhesion Scratch resistance 1 Test 29 3 EN 3837 - A2 2024-T3 clad 4 EN 3837 Proc. A or B or C EN 2334 Pickle or CAA or CCC 5 EN 2435-4 primer + coating to this standard 6 ISO 3270 *7 1 800 g primer not e
39、xposed 4.320 EN 3840 Tribological Abrasion resistance 1 Test 47 3 EN 3837 - A2 2024-T3 clad 4 EN 3837 Proc. A or B or C EN 2334 Pickle or CAA or CCC 5 EN 2435-4 primer + coating to this standard 6 ISO 3270 * 7 Gloss coatings 0,1g after 10 000 cycles 1 000 g load CS 10 wheel, resurface with No. S-11
40、disc every 1 250 cycles. Other coatings 0,4g after 10 000 cycles 1 000 g load CS 10 wheel, resurface with No. S-11 disc every 1 250 cycles. Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking pe
41、rmitted without license from IHS-,-,-Page 9 prEN 4406:2005Table 5 Environmental characteristics Characteristic number Characteristic Requirement 5.501 EN 3840 1 Test 37 Water absorption Humidity absorption 3 EN 3837 - A2 2024-T3 clad 4 EN 3837 Procedure A EN 2334 Pickle 5 EN 2435-4 primer + coating
42、to this standard 6 (40 2) C , (100 5) % r.h. 1 000 h 7 No blistering, softening, lifting or other film defect. Test 24 1 5.502 EN 3840 1 Test 35 Resistance to aeronautical fluids scratch resistance a3 EN 3837 - A2 2024-T3 clad 4 EN 3837 Proc. A or B or C EN 2334 Pickle or CAA or CCC 5 EN 2435-4 prim
43、er + coating to this standard, panel scribed to substrate immediately before testing. 6 Type A Tri-n-butyl phosphate to EN 2379G2 for 168 h at (70 2) C Resistance to fluids aType B NATO H-515 for 168 h (ISO 3270) 7 No blistering, softening, lifting or other film defect Test 29 Type A 1 000 g primer
44、not exposed Type B 1 500 g primer not exposed 5.515 EN 3840 Water resistance absorption 1 Test 34 3 EN 3837 - A2 2024-T3 clad 4 EN 3837 Procedure A EN 2334 Pickle 5 EN 2435-4 primer + coating to this standard, panel scribed to substrate immediately before testing. 6 water to ISO 3696 Grade 2 for 168
45、 h at (40 2) C 7 No blistering, softening, lifting or other film defect Test 29 1 500 g metal not exposed 5.508 Ageing Artificial EN 3840 1 Test 40 3 EN 3837 - A2 2024-T3 clad 4 EN 3837 Proc. A or B or C EN 2334 Pickle or CAA or CCC 5 EN 2435-4 primer + coating to this standard 6 UVB 313, light 4 h
46、humidity 4 h for 500 h 7 Test 27 20 % reduction from initial value. Test 30 E 2 units continued Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 10
47、 prEN 4406:2005Table 5 (concluded) Characteristic number Characteristic Requirement 5.501 EN 3840 1 STANAG 4477 3 EN 3837 - A2 2024-T3 clad 4 EN 3837 Proc. A or B or C EN 2334 Pickle or CAA or CCC Resistance to Aeronautical Fluids Resistance to biological and chemical agents (Type B only) 5 EN 2435-
48、5 primer + coating to this standard 6 STANAG 4477, method 8c 7 1) No blistering or detachment (10 mag.) 2) Primer not exposed 3) No cracking or detachment (10 mag.) 5.501 EN 3840 Resistance to Aeronautical Fluids Resistance to biological and chemical agents (Type B only) 1 STANAG 4477 3 EN 3837 - A2 2024-T3 clad 4 EN 3837 Proc. A or B or C EN 2334 Pickle or CAA or CCC 5 EN 2435-5 primer + coating to this standard 6 STANAG 4477, method 7c 7 1) No blistering or detachment (10 mag.) 2) Primer not expos
