1、BRITISH STANDARD AEROSPACE SERIESBS EN 2435-004:2006Paints and varnishes Corrosion resistant chromated two component cold curing primer Part 004: High corrosion and fluid resistance with surface preparation toleranceThe European Standard EN 2435-004:2006 has the status of a British StandardICS 49.04
2、0g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 2435-004:2006This British Standard was published under the authority of the Standards Policy
3、and Strategy Committee on 31 July 2006 BSI 2006ISBN 0 580 48546 3National forewordThis British Standard is the official English language version of EN 2435-004:2006. The UK participation in its preparation was entrusted by Technical Committee ACE/65, Non-metallic materials for aerospace purposes (ex
4、cluding textiles), to Subcommittee ACE/65/-/3, 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 inte
5、rnational and European developments and promulgate 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 foun
6、d in the BSI Catalogue under the section entitled “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 respon
7、sible for its correct application.Compliance with 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 notic
8、e displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 2435-004June 2006ICS 49.040English VersionAerospace series - Paints and varnishes - Corrosion resistantchromated two com
9、ponent cold curing primer - Part 004: Highcorrosion and fluid resistance with surface preparation toleranceSrie arospatiale - Peintures et vernis - Peinture primaireanti-corrosion chromate, deux composants polymrisant temprature ambiante - Partie 004 : Haute rsistance lacorrosion et aux fluides avec
10、 tolrance la prparation desurfaceLuft- und Raumfahrt - Anstrichstoffe -Korrosionsbestndiger Zweikomponenten-Grundanstrich,kalthrtend, chromathaltig - Teil 004: HoheKorrosionsbestndigkeit und hohe Bestndigkeit gegenFlssigkeiten, mit OberflchentoleranzThis European Standard was approved by CEN on 27 F
11、ebruary 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 and bibliographical references concerning such nationalstandards may be ob
12、tained 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 responsibility of a CEN member into its own language and notified to the Central Secr
13、etariat 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, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portu
14、gal, 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 Brussels 2006 CEN All rights of exploitation in any form and by any means res
15、ervedworldwide for CEN national Members.Ref. No. EN 2435-004:2006: 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 2435-004:20063 Foreword This European Standard (EN 2435-004:2006) has been
16、 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 approval of the National Associations and the Official Services of the member
17、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 conflicting national standards shall be withdrawn at the latest by December 2
18、006. 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. According to the CEN/CENELEC Internal Regulations, the national standards organiz
19、ations 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, Lithuania, Luxem-bourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slo
20、vakia, Slovenia, Spain, Sweden, Switzer-land and the United Kingdom. EN 2435-004:20064 0 Introduction This standard is part of a series of EN non-metallic materials standards for aerospace applications. The general organisation of this series is described in EN 4385. This standard is a level 3 docum
21、ent 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 primer with a high degree of resistance to aggressive hydraulic fluids and
22、improved tolerance to the standard of surface preparation 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, process A or B or C or D and ISO 3270. T
23、he 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 The following referenced doc
24、uments are indispensable for the 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 2379, Aerospace series Fluids for assessment of non-metallic materials1)E
25、N 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 grain control1)EN 3837, Aerospace series Paints and varnishes Na
26、ture 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 Links be-tween types of standards1)ISO 1513, Paints and varnish
27、es 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 methods TR 7000-9, Aerospace series Non-metallic materials Rules f
28、or 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 standard. EN 2435-004:20065 3 Definitions Not applicable. 4 Classi
29、fication 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: polyurethane (reaction between an hydroxyl functional resin a
30、nd 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 5 shall be performed. 5.2 Qualification tests For product qualification, all tests mentioned in this standard, in the Tables 1 to
31、 5, shall be performed. Table 1 General requirements 1.001 Material description Two component cold curing chromated primer with high corro-sion and fluid resistance with surface tolerance. 1.002 Formulation Base a base containing essentially chromate corrosion in-hibitor associated, or not, with pig
32、ments 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 manufacturers instructions. 1.00
33、4 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 1.094 Designation Primer EN
34、 2435-004 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 2435-004:20066 Table 2 Physical and chemical characteristics 1 ISO 1513 Condition 6 As received in original container. 2.014 * 7 Shall
35、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 or D Degreased Application properties and finish 5 Primer to this sta
36、ndard. 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 Test 9aPot life 6 Base + activator + thinner
37、 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 matter 7 % m/m 2 b c 2 b cEN 3840 1 Test 4
38、9 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 2435-004:20067 Table 2 Physical and chemical characteristics (concluded) EN 3840 1 Test 4 6 Activator + thinner Density hydrometer A
39、ctivator 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 or D Degreased 5 Primer to this standard. 6 ISO 3270 2.041 Surface dry tim
40、e 7 h 1dEN 3840 1 Test 22 3 EN 3837 A22024-T3 Clad 4 EN 3837 Process A or B or C or D Degreased 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 Clad 4 EN 3837 Process A or B or C or D Degreased 5 Primer to this st
41、andard. 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 reference value is that established during qualification.dUnless otherwise specified
42、. eTest could also be used for activator and thinner if required. EN 2435-004:20068 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 or D Degreased 5 Primer to this standard Colour 6 ISO 3270 3.084 or 3.053 *7 E If specified shall matc
43、h 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 Gloss units 20 * See 5.1 Table 4 Mechanical characteristics EN 3840 1 Test 24 3 EN 3837 A22024-T3
44、Clad 4 EN 3837 Process A or B or C or D Degreased 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 or D Degreased 5 Primer to this standard. Scratch resistance 6 ISO 3270 4.076 *7 1 800 g metal not expo
45、sed. EN 3840 1 Test 25 6 mm mandrel 3 EN 3837 A62024-T3 Clad 4 EN 3837 Process A or B or C or D Degreased 5 Primer to this standard. 6 ( 55 2) C 4.082 Bend test cylindrical 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
46、C or D Degreased 5 Primer to this standard. 6 ISO 3270 4.082 Slow deformation 7 3 mm no detachment or cracking (10 magnification). EN 3840 1 Test 26 3,8 mm spacing 3 EN 3837 A22024-T3 Clad 4 EN 3837 Process A or B or C or D Degreased 5 Primer to this standard. 6 ISO 3270 4.080 Impact 7 No detachment
47、 or cracking. 4.999 Notes * See 5.1 EN 2435-004:20069 Table 5 Environmental characteristics EN 3840 1 Test 38 3 EN 3837 A22024-T3 Clad 4 EN 3837 Process A or B or C or D Degreased 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 Cla
48、d 4 EN 3837 Process A or B or C or D Degreased 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 4 EN 3837 Process A or B or C or D Degreased 5 Primer to this standard, panel scribed to substrate immediately before test-ing. A tri
49、-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 blistering, softening, lifting or other film defect. Test 29 1 800 g metal not exposed EN 3840 1 Test 34 3 EN 3837 A22024-T3 Clad 4 EN 3837 Process A or B or C or D Degreased 5 Primer to this standard, panel scribed to substrate immediately before test
