1、BRITISH STANDARD AEROSPACE SERIES BS EN 2434-005:2006 Paints and varnishes Two component cold curing polyurethane finish Part 005: High flexibility and chemical agent resistance for military application The European Standard EN 2434-005:2006 has the status of a British Standard ICS 49.040 BS EN 2434
2、-005:2006 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2006 BSI 2006 ISBN 0 580 48536 6 National foreword This British Standard is the official English language version of EN 2434-005:2006. The UK participation in its preparation w
3、as entrusted by Technical Committee ACE/65, Non-metallic materials for aerospace purposes (excluding 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
4、interpretation, or proposals for change, and keep UK interests informed; monitor related international 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-references The British Standards
5、 which implement international or European publications referred to in this document may be found 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 pub
6、lication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front co
7、ver, the EN title page, pages 2 to 17 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN2434005 June2006 ICS49.040 EnglishVersio
8、n AerospaceseriesPaintsandvarnishesTwocomponentcold curingpolyurethanefinishPart005:Highflexibilityand chemicalagentresistanceformilitaryapplication SriearospatialePeinturesetvernisPeinturedefinition polyurthane,deuxcomposantspolymrisant tempratureambiantePartie005:Hauteflexibilitet rsistanceauxsubs
9、tanceschimiquespourapplications militaires LuftundRaumfahrtAnstrichstoffeZweikomponenten PolyurethanDecklackkalthrtendTeil005:Hohe ElastizittundBestndigkeitgegenChemikalienfr militrischeAnwendung ThisEuropeanStandardwasapprovedbyCENon3February2006. CENmembersareboundtocomplywiththeCEN/CENELECInterna
10、lRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheCentralSecretariatortoanyCENmember. ThisEuropeanStandardexistsinthreeofficia
11、lversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheCentralSecretariathasthesamestatusast heofficial versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,Cyprus,CzechRepublic,Denmark,Estonia,F
12、inland,France, Germany,Greece,Hungary,Iceland,Ireland,Italy,Latvia,Lithuania,Luxembourg,Malta,Netherlands,Norway,Poland,Portugal, Romania, Slovakia,Slovenia,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG Managemen
13、tCentre:ruedeStassart,36B1050Brussels 2006CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN2434005:2006:EEN 2434-005:2006 2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Definitions 6 4 Classification6 5 Batch release and qualification
14、 testing.6 6 Designation . 17 7 Requirements for fibre reinforced composites . 17 EN 2434-005:2006 3 Foreword This European Standard (EN 2434-005:2006) has been prepared by the AeroSpace and Defense Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried out
15、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 status of a national standard, either by public
16、ation 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 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
17、 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, Cyprus, Czech Republic, Denmark, Estonia,
18、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. 4 1 Scope This standard specifies the requirements for a two component flex
19、ible polyurethane topcoat to be applied over EN 2435-005 or EN 2436-006 primer mainly for exterior aerospace applications. The primer and the finish tested to this specification will be from the same manufacturer applied in accordance with (i.a.w.) their instruction/Table 1. 2 Normative references T
20、he 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 amendments) applies. ISO 1513, Paints and varnishes Examination and prepara
21、tion of samples for testing ISO 1517, Paints and varnishes Surface-drying test Ballotini method ISO 1518, Paints and varnishes Scratch test ISO 1519, Paints and varnishes Bend test (cylindrical mandrel) ISO 1520, Paints and varnishes Cupping test ISO 1524, Paints, varnishes and printing inks Determi
22、nation of fineness of grind ISO 2409, Paints and varnishes Cross-cut test ISO 2431, Paints and varnishes Determination of flow time by use of flow cups ISO 2811-1, Paints and varnishes Determination of density Part 1: Pyknometer method ISO 2811-2, Paints and varnishes Determination of density Part 2
23、: Immersed body (plummet) method ISO 2811-3, Paints and varnishes Determination of density Part 3: Oscillation method ISO 2811-4, Paints and varnishes Determination of density Part 4: Pressure cup method ISO 2812-1, Paints and varnishes Determination of resistance to liquids Part 1: General methods
24、ISO 2812-2, Paints and varnishes Determination of resistance to liquids Part 2: Water immersion method ISO 2813, Paints and varnishes Determination of specular gloss of non-metallic paint films at 20, 60 and 85 ISO 3251, Paints, varnishes and plastics Determination of non-volatile-matter content EN
25、2434-005:20065 ISO 3270, Paints and varnishes and their raw materials Temperatures and humidities for conditioning and testing ISO 3675, Crude petroleum and liquid petroleum products Laboratory determination of density Hydrometer method ISO 3678, Paints and varnishes Print-free test ISO 3679, Determ
26、ination of flash point Rapid equilibrium closed cup method ISO 3680, Determination of flash/no flash Rapid equilibrium closed cup method ISO 4623-2, Paints and varnishes Determination of resistance to filiform corrosion Part 2: Aluminium substrates ISO 4628-2, Paints and varnishes Evaluation of degr
27、adation of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 2: Assessment of degree of blistering ISO 4628-8, Paints and varnishes Evaluation of degradation of coatings Designation of quantity and size of defects, and of intensity of unifor
28、m changes in appearance Part 8: Evaluation of corrosion around the scribe ISO 4628-10, Paints and varnishes Evaluation of degradation of coatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 10: Assessment of degree of filiform corrosion ISO 627
29、0-1, Paints and varnishes Determination of resistance to humidity Part 1: Continuous condensation ISO 7253, Paints and varnishes Determination of resistance to neutral salt spray (fog) ISO 7724-1, Paints and varnishes Colorimetry Part 1: Principles ISO 7724-2, Paints and varnishes Colorimetry Part 2
30、: Colour measurement ISO 7724-3, Paints and varnishes Colorimetry Part 3: Calculation of colour differences ISO 9117, Paints and varnishes Determination of through-dry state and through-dry time Method of test ISO 9514, Paints and varnishes Determination of the pot-life of liquid systems Preparation
31、 and conditioning of samples and guidelines for testing ISO 11341, Paints and varnishes Artificial weathering and exposure to artificial radiation Exposure to filtered xenon-arc radiation ISO 11890-1, Paints and varnishes Determination of volatile organic compound (VOC) content Part 1: Difference me
32、thod ISO 11890-2, Paints and varnishes Determination of volatile organic compound (VOC) content Part 2: Gas- chromatographic method ISO 11909, Binders for paints and varnishes Polyisocyanate resins General methods of test ISO 15710, Paints and varnishes Corrosion testing by alternate immersion in an
33、d removal from a buffered sodium chloride solution EN 2434-005:20066 EN 2435-005, Aerospace series Paints and varnishes Corrosion resistant chromated two component cold curing epoxy primer Part 005: High corrosion resistance for military application 1)EN 2436-006, Aerospace series Paints and varnish
34、es Corrosion resistant chromate-free two component cold curing epoxy primer Part 006: High corrosion resistance for military application1)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
35、 varnishes Technical specification 1)EN 3847, Aerospace series Paints and varnishes Determination of sedimentation rating 1)EN 4160, Aerospace series Non-metallic materials Paints and varnishes Test methods Determination of the effects of thermal exposure 1)EN 6042, Aerospace series Organic compound
36、s Test method Analysis by infrared spectroscopy 1)STANAG 4477, Specification for paints and paint systems resistant to chemical agents an decontaminations for protection of aerospace military equipment 2)3 Definitions For the purposes of this standard, the definitions given in EN 3840 apply. 4 Class
37、ification The topcoat is classified according to the following types and classes: Type I: Standard solvent content; Type II: Low volatile organic content ( 420 g/l); Class A: Matt finish 90 units at 60 and 80 units at 20. 5 Batch release and qualification testing 5.1 Qualification tests For product
38、qualification, all tests defined in this standard, in the Tables 1 to 7, shall be performed. A minimum of three batches shall be tested for qualification purposes. 1) Published as ASD Prestandard at the date of publication of this standard. 2) Published by: NATO Military Agency for Standardization (
39、MAS); B-1110 Brussels. EN 2434-005:20067 5.2 Batch acceptance testing For batch acceptance the tests marked with the symbol * shall be performed. Table 1 General requirements Material description Two component cold curing polyurethane topcoat Formulation Base: hydroxyl functional polyester or acryli
40、c resins Activator: a polyisocyanate activator solution Thinner: if required Preparation These components shall be mixed in simple whole number proportions, by volume or weight, in accordance with the manufacturers instructions. Technical specification EN 3840 Marking See EN 3840. Storage stability
41、See EN 3840. Application and use Dry film thickness of (50 5) m (with primer EN 2435-005 or EN 2436-006 (25 5) m will be 65 m to 85 m) Drying conditions ISO 3270 for 168 h before testing. Finish is applied to the primer (EN 2435-005 or EN 2436-006) following drying up the primer for 4 h to 6 h as sp
42、ecified Freedom from defects See EN 3840. Quality assurance See EN 3840. Packaging See EN 3840. Health and safety See EN 3840. EN 2434-005:20068 Table 2 Physical and chemical characteristics Delivery conditions Tests according to EN 3840 Test Test criteria Test requirements test method ISO 1513 (as
43、received in original container) * Condition requirements 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 test method ISO 3251 requirements % base activator thinner 1 Non vola
44、tile matter 2 % ref. value a b 2 % ref. value a b test method ISO 11890-1, ISO 11890-2 test condition base + activator + thinner 49 Volatile organic content (VOC) requirements g/l reference value bTest method ISO 3679 or ISO 3680 requirements C base activator thinner 7 Flash point reference value b
45、reference value b reference value btest method ISO 2431 test condition base + activator 8 * Flow time requirements s 10 % ref. value a bTest method EN 3847 test condition base + activator + thinner 5 * Sedimentation rating requirements ml/4 h 30 test method ISO 2811 test condition ISO 3270 requireme
46、nts g/cm 3base activator thinner 3 * Density 2 % ref. value a b 2 % ref. value a b continued EN 2434-005:20069 Table 2 Physical and chemical characteristics Delivery conditions (continued) Tests according to EN 3840 Test Test criteria Test requirements test method ISO 3675 test condition ISO 3270 re
47、quirements g/cm 3base activator thinner 4 * Density hydrometer 1 % ref. value a b 1 % ref. value a b16 Isocyanate value test method ISO 11909 12 IR spectroscopy test method EN 6042 test method ISO 1524 requirement m base activator thinner 10 Fineness of grind To meet the gloss level stated in Table 3 test method none panel EN 3837 A 2pretreatment EN 3837 Process A or B or C coating EN 2435-005 or EN 2436-006 and coating to this standard test condition ISO 3270 * Application, properties and finish requirements the paint film applied shall result in a opaque even finish free from
