1、BRITISH STANDARDBS EN 4406:2006Aerospace series Paints and varnishes Two component cold curing polyurethane coating Abrasion resistantThe European Standard EN 4406:2006 has the status of a British StandardICS 49.040g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g5
2、4g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 4406:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2006 BSI 2006ISBN 0 580 49533 7National forewordThis
3、 British Standard was published by BSI. It is the UK implementation of EN 4406:2006.The UK participation in its preparation was entrusted by Technical Committee ACE/65, Non-metallic materials for aerospace purposes (excluding textiles), to Subcommittee ACE/65/-/3, Paints.A list of organizations repr
4、esented on ACE/65/-/3 can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments iss
5、ued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 4406October 2006ICS 49.040English VersionAerospace series - Paints and varnishes - Two component coldcuring polyurethane coating - Abrasion resistantSrie arospatiale - Peintures et vernis - Peinture de finit
6、ionpolyurthane deux composants polymrisant temprature ambiante - Rsistance labrasionLuft- und Raumfahrt - Anstrichstoffe - ZweikomponentenPolyurethan-Decklack Kalthrtend - AbriebfestThis European Standard was approved by CEN on 21 July 2006.CEN members are bound to comply with the CEN/CENELEC Intern
7、al Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.Th
8、is European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the
9、national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United K
10、ingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 4406:2006: E2 Conten
11、ts Page Foreword3 Introduction .4 1 Scope 4 2 Normative references 4 3 Definitions 5 4 Classification5 5 Batch release and qualification testing.5 EN 4406:20063 Foreword This document (EN 4406:2006) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (AS
12、D-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of ASD, prior to its presentation to CEN. This European Standard shall be given the
13、status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2007, and conflicting national standards shall be withdrawn at the latest by April 2007. Attention is drawn to the possibility that some of the elements of this document may be the sub
14、ject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, C
15、yprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 4406:20064 Introduction This st
16、andard 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, to be applied over a primer for aerospace applications offering resistance to wear
17、 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 3270 and painted with primer to EN 2435. The ability of the material to be used fo
18、r 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 The following referenced documents are indispensable for the applica
19、tion 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 Examination and preparation of samples for testing. ISO 3270, Paints and varnishes and
20、 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 aluminium and aluminium alloys. EN 2379, Aerospace series Fluids for assessment of n
21、on-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 chromated two component cold curing primer. 1)EN 3837, Aerospace series Paints and varni
22、shes 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 for the drafting and presentation of material standards Part 9: Paints and varnishes
23、. 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 ASD Pre-standard at the date of publication of this standard. 2) Published as ASD Technical Report at the date of publicat
24、ion of this standard. EN 4406:20065 3 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
25、 release 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 t
26、o a product 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. EN 4406:20066 Table 1 General requirements Characteristic number Characteristic Requ
27、irements 1.001 Material description Two component cold curing polyurethane coating with resistance to abrasion 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. Activ
28、ator : a polyisocyanate activator solution. Thinner : if required. 1.003 Form and method of production These 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 Applicatio
29、n and use Dry film thickness of (200 25) m 1.010 Storage stability See EN 3840. 1.011 Shelf life See EN 3840. 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
30、 4 h to 16 h. 1.093 Quality assurance See EN 3840. 1.094 Designation Polyurethane abrasion resistant coating. 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 ch
31、emical characteristics Characteristic number Characteristic Requirements 2.008 1 ISO 1513 Freedom from defects 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 p
32、roduce a defect free film. The base component and activator component shall each be in a condition such that 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
33、 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 primer + coating to this standard 7 Paint film shall show an opaque even finish, free from runs, sags, wrinkling, pinholing or other defect. continued EN 4406:20067 Table 2 (concluded) Characteri
34、stic number Characteristic Requirements 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 Test 1 7 Base Activator % 2 a, b 2 a, b2.104 EN 3840 1 Test 49 Composition Volatile organic con
35、tent 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/cm3 2 a, b 2 a, b2.109 Flammability Flash point EN 3840 1 Test 7 *7 Base Activator Thinner C refe
36、rence 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 + coating to this standard 6 ISO 3270 *7 H 16 2.999 Notes a The deviation is that compared to the re
37、ference value. b The reference value is that established during qualification. c Test could also be used for activator and thinner if required. EN 4406:20068 Table 3 Physico - chemical characteristics Characteristic number Characteristic Requirements 3.111 EN 3840 Optical properties Colour 1 Test 30
38、 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
39、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 units Shall match the gloss specified by the purchaser. EN 4406:20069 Table 4 Mechanical characteristics Characteristic number Characteristic Requirements 4.304 EN 3840 Adhesion
40、 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 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 Pi
41、ckle or CAA or CCC 5 EN 2435-4 primer + coating to this standard 6 ISO 3270 *7 1 800 g primer not exposed 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
42、3270 * 7 Gloss coatings 0,1 g after 10 000 cycles 1 000 g load CS 10 wheel, resurface with No. S-11 disc every 1 250 cycles. Other coatings 0,4 g after 10 000 cycles 1 000 g load CS 10 wheel, resurface with No. S-11 disc every 1 250 cycles. EN 4406:200610 Table 5 Environmental characteristics Charac
43、teristic number Characteristic Requirements 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 to this standard 6 (40 2) C , (100 5) % r.h. 1 000 h 7 No blistering, softening, lifting or other fil
44、m 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 primer + coating to this standard, panel scribed to substrate immediately before testing. 6 Type A Tri-n-
45、butyl phosphate to EN 2379 Group 2 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 not exposed Type B 1 500 g primer not exposed 5.515 EN 3840 Water resistance absorption 1 Test
46、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 h at (40 2) C 7 No blistering, softening, lifting or other film defect Test 29 1 500 g metal n
47、ot 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 humidity 4 h for 500 h 7 Test 27 20 % reduction from initial value. Test 30 E 2 units continued
48、 EN 4406:200611 Table 5 (concluded) Characteristic number Characteristic Requirements 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 243
49、5-5 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 prim
