1、BRITISH STANDARD AEOSPACE SERIESBS EN 2435-002:2006Paints and varnishes Corrosion resistant chromated two primer Part 002: High corrosion resistanceBritish StandardICS 49.040g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g
2、51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58component cold curing The European Standard EN 2435-002:2006 has the status of a BS EN 2435-002:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2006 BSI 200
3、6ISBN 0 580 48544 7National forewordThis British Standard is the official English language version of EN 2435-002:2006. 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,
4、 Paints, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promul
5、gate them in the UK.A list of organizations represented on this subcommittee can be obtained on request to its secretary.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entit
6、led “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance w
7、ith a British Standard does not of itself confer immunity from legal obligations.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 10, an inside back cover and a back cover.The BSI copyright notice displayed in this document indicates when th
8、e document was last issued.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 2435-002June 2006ICS 49.040English VersionAerospace series Paints and varnishes Corrosion resistantchromated two component cold curing primer Part 002: Highcorrosion
9、resistanceSrie arospatiale Peintures et vernis Peinture primaireanti-corrosion chromate, deux composants polymrisant temprature ambiante Partie 002 : Haute rsistance lacorrosionLuft- und Raumfahrt Anstrichstoffe Korrosionsbestndiger Zweikomponenten-Grundanstrich,kalthrtend, chromathaltig Teil 002: H
10、oheKorrosionsbestndigkeitThis European Standard was approved by CEN on 27 February 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists
11、 and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibi
12、lity 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 national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Ital
13、y, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Br
14、ussels 2006 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 2435-002:2006: E2 Contents Page Foreword3 0 Introduction4 1 Scope 4 2 Normative references 4 3 Definitions 5 4 Classification5 5 Batch release and qualification testing.5 EN
15、 2435-002:20063 Foreword This European Standard (EN 2435-002:2006) has been prepared by the AeroSpace and Defense Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has re-ceived the app
16、roval 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 status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2006, and co
17、nflicting national standards shall be withdrawn at the latest by December 2006. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. Accord
18、ing to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Den-mark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuan
19、ia, Luxem-bourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzer-land and the United Kingdom. EN 2435-002:20064 0 Introduction This standard is part of a series of EN non-metallic materials standards for aerospace applications. The general organisati
20、on of this series 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 TR 7000-9. 1 Scope This standard defines the requirements for a two component, chromated epoxy or polyurethane, high corrosion resistant
21、primer with a degree of resistance to aircraft fluids which can be used with or without a finish for aerospace applications. The properties specified in this standard are obtained on defined aluminium alloy test pieces prepared in accordance with EN 3837 and ISO 3270. The ability of the material to
22、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 The following referenced documents are indispensable for t
23、he application of this document. For dated refer-ences, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2334, Aerospace series Chromic-sulphuric acid pickle of aluminium and aluminium alloys EN 2379, Aerospa
24、ce series Fluids for assessment of non-metallic materials1)EN 2434-004, Aerospace series Paints and varnishes Two component cold curing polyurethane finish Part 004: High flexibility1)EN 2709, Aerospace series Aluminium alloy 2024-T3510 bar and section 1,2 (a or D) 150 mm with peripheral coarse grai
25、n control1)EN 3837, Aerospace series Paints and varnishes Nature and method for surface preparation of test pieces in aluminium alloys1)EN 3840, Aerospace series Paints and varnishes Technical specification1)EN 4385, Aerospace series Non-metallic materials General organisation of standardisation Lin
26、ks be-tween types of standards1)ISO 1513, Paints and varnishes Examination and preparation of samples for testing ISO 3270, Paints and varnishes and their raw materials Temperature and humidities for conditioning and testing ISO 3696, Water for analytical laboratory use Specification and test method
27、s TR 7000-9, Aerospace series Non-metallic materials Rules for the drafting and presentation of material standards Part 9: Paints and varnishes2) 1) Published as ASD Prestandard at the date of publication of this standard. 2) Published as ASD Technical Report at the date of publication of the standa
28、rd. EN 2435-002:20065 3 Definitions Not applicable. 4 Classification The primer is classified according to the nature of the most typical chemical reaction that occurs between the two components: Type A: epoxy (reaction between an epoxy resin and an activator with amino functional groups). Type B: p
29、olyurethane (reaction between an hydroxyl functional resin and a polyisocyanate activator). 5 Batch release and qualification testing 5.1 Batch release testing For batch acceptance the tests marked with the symbol * in Tables 2 to 4 shall be performed. 5.2 Qualification tests For product qualificati
30、on, all tests mentioned in this standard, in the Tables 1 to 5, shall be performed. Table 1 General requirements 1.001 Material description Two component cold curing chromated primer with high corro-sion resistance. 1.002 Formulation Base a base containing essentially chromate corrosion in-hibitor a
31、ssociated, or not, with pigments and fillers dispersed in a mixture of resins and solvents. Activator an 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 manuf
32、acturers instructions. 1.004 Technical specification EN 3840 1.009 Application and use Dry film thickness of (20 5) m. 1.010 Storage See EN 3840 1.011 Shelf life See EN 3840 1.013 Processing conditions ISO 3270 for 7 days before testing unless otherwise specified.1.093 Quality assurance See EN 3840
33、1.094 Designation Primer EN 2435-002 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 EN 2435-002:20066 Table 2 Physical and chemical characteristics 1 ISO 1513 Condition 6 As received in original
34、container. 2.014 * 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. 1 None 3 EN 3837 A22024-T3 Clad 4 EN 3837 Process A or B or C EN 2334 Pickle or CAA or CCC Application p
35、roperties and finish 5 Primer to this standard. 2.011 * 7 Paint film shall show an opaque even finish, free from runs, sags, wrinkling, pin holing or other defect. EN 3840 1 Test 5 6 Base + activator + thinner 2.034 Sedimentation rating 7 ml V 30 after 4 h EN 3840 1 Test 20 followed by Test 8aor Tes
36、t 9aPot life 6 Base + activator + thinner 2.012 *7 s or Pa.s 2 initial value after 4 h EN 3840 1 Test 8aor Test 9aViscosity 6 Base + activator + thinner 2.029 *7 s or Pa.s 10 %b cEN 3840 1 Test 10 Fineness of grind 6 Base + activator 2.035 *7 m 30 EN 3840 1 Test 1 Base Activator 2.027 Non volatile m
37、atter 7 % m/m 2 b c 2 b cEN 3840 1 Test 49 6 Base + activator + thinner 2.027 Volatile organic compound (VOC) content 7 g/l reference valueb cEN 3840 1 Test 3 Density 6 Base 2.057 * 7 g/cm3 2b c econtinued EN 2435-002:20067 Table 2 Physical and chemical characteristics (concluded) EN 3840 1 Test 4 6
38、 Activator + thinner Density hydrometer Activator Thinner 2.057 *7 g/cm3 1b c 1b cEN 3840 1 Test 7 Base Activator Thinner 2.036 Flash point 7 C reference valuec reference valuec reference valuecEN 3840 1 Test 21 3 EN 3837 A22024-T3 Clad 4 EN 3837 Process A or B or C EN 2334 Pickle or CAA or CCC 5 Pr
39、imer to this standard. 6 ISO 3270 2.041 Surface dry time 7 h 1dEN 3840 1 Test 22 3 EN 3837 A22024-T3 Clad 4 EN 3837 Process A or B or C EN 2334 Pickle or CAA or CCC 5 Primer to this standard. 6 ISO 3270 2.041 Drying time Print free 7 h 4 using a load of 1 000 gdEN 3840 1 Test 23 3 EN 3837 A22024-T3
40、Clad 4 EN 3837 Process A or B or C EN 2334 Pickle or CAA or CCC 5 Primer to this standard. Through dry time 6 ISO 3270 2.041 * 7 h 16 2.999 Notes *See 5.1aTest 8 shall be used for non-thixotropic paints and test 9 for thixotropic paints. bThe deviation is that compared to the reference value. cThe r
41、eference value is that established during qualification.dUnless otherwise specified. eTest could also be used for activator and thinner if required. EN 2435-002:20068 Table 3 Physico-chemical characteristics EN 3840 1 Test 30 3 EN 3837 A22024-T3 Clad 4 EN 3837 Process A or B or C EN 2334 Pickle or C
42、AA or CCC 5 Primer to this standard Colour 6 ISO 3270 3.084 or 3.053 *7 E If specified shall match the colour specified by the user. EN 3840 1 Test 27 3 EN 3837 A22024-T3 Clad 4 EN 3837 Process A or B or C EN 2334 Pickle or CAA or CCC 5 Primer to this standard. Gloss 60 6 ISO 3270 3.088 or 3.083 *7
43、Gloss units 20 * See 5.1 Table 4 Mechanical characteristics EN 3840 1 Test 24 3 EN 3837 A22024-T3 Clad 4 EN 3837 Process A EN 2334 Pickle or CAA or CCC 5 Primer to this standard. Adhesion 6 ISO 3270 4.082 * 7 Classification 0 EN 3840 1 Test 29 3 EN 3837 A22024-T3 Clad 4 EN 3837 Process A or B or C E
44、N 2334 Pickle or CAA or CCC 5 Primer to this standard. Scratch resistance 6 ISO 3270 4.076 *7 1 500 g metal not exposed. EN 3840 1 Test 25 6 mm mandrel 3 EN 3837 A62024-T3 Clad 4 EN 3837 Process A or B or CaEN 2334 Pickle or CAA or CCC 5 Primer to this standard. 6 ( 55 2) C 4.082 Bend test cylindric
45、al mandrel 7 No detachment or cracking (10 magnification). EN 3840 1 Test 46 3 EN 3837 A22024-T3 Clad 4 EN 3837 Process A or B or CaEN 2334 Pickle or CAA or CCC 5 Primer to this standard. 6 ISO 3270 4.082 Slow deformation 7 3 mm no detachment or cracking. 4.999 Notes * See 5.1 aPre-treatments specif
46、ied shall be used for qualification testing. For batch testing pre-treatment shall be the subject of agreement between manufacturer and user. EN 2435-002:20069 Table 5 Environmental characteristics EN 3840 1 Test 38 3 EN 3837 A22024-T3 Clad 4 EN 3837 Process A or B or CbEN 2334 Pickle or CAA or CCC
47、5 Primer to this standard. 6 150 C 24 h 5.102 Heat 7 Test 46 1,5 mm (ISO 3270) EN 3840 1 Test 38 3 EN 3837 A22024-T3 Clad 4 EN 3837 Process A or B or CbEN 2334 Pickle or CAA or CCC 5 Primer to this standard. 6 40 C 24 h 5.102 Cold 7 Test 46 3 mm (ISO 3270). EN 3840 1 Test 35 3 EN 3837 A22024-T3 Clad
48、 4 EN 3837 Process A or B or CbEN 2334 Pickle or CAA or CCC 5 Primer to this standard, panel scribed to substrate immediately before test-ing. A tri-n-butyl phosphate to EN 2379 G2 for 168 h (ISO 3270)a6 B tri-n-butyl phosphate to EN 2379 G2 for 168 h at (70 2) Ca5.101 Resistance to fluidsa7 No blis
49、tering, softening, lifting or other film defect. Test 29 1 500 g metal not exposed EN 3840 1 Test 34 3 EN 3837 A22024-T3 Clad 4 EN 3837 Process A or B or CbEN 2334 Pickle or CAA or CCC 5 Primer to this standard, panel scribed to substrate immediately before test-ing. 6 Water to ISO 3696 Grade 2 for 168 h at (40 2) C. 5.100 Water behaviour 7 No blistering, softening, lifting or other film
