SIST EN 4689:2012
(Main)Aerospace series - Paints and varnishes - Two components cold curing polyurethane finish - High flexibility and chemical agent resistance for military application
Aerospace series - Paints and varnishes - Two components cold curing polyurethane finish - High flexibility and chemical agent resistance for military application
This European Standard defines the requirements for a two components, high corrosion inhibiting epoxy primer. The coating should be suitable for use on suitably prepared metallic substrates, chromic acid anodized or conversion coated aluminium alloys, fibre reinforced composite materials and other suitably prepared substrates.
Luft- und Raumfahrt - Anstrichstoffe - Zweikomponenten Polyurethan- Decklack, raumtemperaturhärtend - Hohe Elastizität und Beständigkeit gegen Chemikalien für militärische Anwendung
Diese Europäische Norm legt die Anforderungen an eine dehnbare Zweikomponenten-Polyurethan-Deckbeschichtung, raumtemperaturhärtend, fest, die auf Grundbeschichtungen aus Grundbeschichtungs-stoffen nach EN 4687 und/oder EN 4688 aufzubringen und hauptsächlich für Anwendungen im Außenbereich in der Luft- und Raumfahrt vorgesehen ist.
Der Grundbeschichtungsstoff und der Deckbeschichtungsstoff, die nach dieser Anforderungsnorm geprüft werden, sind von demselben Hersteller und werden nach dessen Anweisungen (Tabelle 1) aufgetragen.
Série aérospatiale - Peinture et vernis - Peinture de finition polyuréthane à deux composants polymérisant à température ambiante - Haute flexibilité et résistance aux substances chimiques pour applications militaires
La présente norme européenne les exigences relatives aux couches de finition polyuréthane à deux composants, flexibles, applicables aux peintures primaires EN 4687 et/ou 4688 pour applications aéronautiques extérieures.
La peinture primaire et la couche de finition testées selon la présente spécification doivent provenir du même fabricant conformément à leurs instructions/au Tableau 1.
Aeronavtika - Barve in laki - Dvokomponentni poliuretanski lak, ki se strdi pri temperaturi okolja - Zelo elastičen in odporen proti kemikalijam, za vojaško uporabo
Ta evropski standard določa zahteve za dvokomponentni epoksidni temeljni premaz, ki učinkovito preprečuje korozijo. Premaz naj bi bil primeren za uporabo na ustrezno pripravljenih kovinskih podlagah, aluminijevih zlitinah, anodiziranih s kromovo kislino, ali z reakcijsko prevleko, sestavljenih materialih, ojačanih z vlakni, in drugih ustrezno pripravljenih podlagah.
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.XSRUDERLuft- und Raumfahrt - Anstrichstoffe - Zweikomponenten Polyurethan- Decklack, raumtemperaturhärtend - Hohe Elastizität und Beständigkeit gegen Chemikalien für militärische AnwendungSérie aérospatiale - Peinture et vernis - Peinture de finition polyuréthane à deux composants polymérisant à température ambiante - Haute flexibilité et résistance aux substances chimiques pour applications militairesAerospace series - Paints and varnishes - Two components cold curing polyurethane finish - High flexibility and chemical agent resistance for military application49.040Prevleke in z njimi povezani postopki, ki se uporabljajo v letalski in vesoljski industrijiCoatings and related processes used in aerospace industryICS:Ta slovenski standard je istoveten z:EN 4689:2012SIST EN 4689:2012en01-september-2012SIST EN 4689:2012SLOVENSKI
STANDARD
SIST EN 4689:2012
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 4689
March 2012 ICS 49.040 English Version
Aerospace series - Paints and varnishes - Two components cold curing polyurethane finish - High flexibility and chemical agent resistance for military application
Série aérospatiale - Peinture et vernis - Peinture de finition polyuréthane à deux composants polymérisant à température ambiante - Haute flexibilité et résistance aux substances chimiques pour applications militaires
Luft- und Raumfahrt - Anstrichstoffe - Zweikomponenten Polyurethan- Decklack, raumtemperaturhärtend - Hohe Elastizität und Beständigkeit gegen Chemikalien für militärische Anwendung This European Standard was approved by CEN on 21 January 2012.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, 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, Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 4689:2012: ESIST EN 4689:2012
EN 4689:2012 (E) 2 Contents Page Foreword .3 Introduction .4 1 Scope .5 2 Normative references .5 3 Terms and definitions .8 4 Surface pretreatments .8 5 Classification .8 6 Batch release and qualification testing .8 7 Requirements for fibre reinforced composites . 26 8 Designation . 26
SIST EN 4689:2012
EN 4689:2012 (E) 3 Foreword This document (EN 4689:2012) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-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 status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2012, and conflicting national standards shall be withdrawn at the latest by September 2012. 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 organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, 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, Turkey and the United Kingdom. SIST EN 4689:2012
EN 4689:2012 (E) 4 Introduction The requirements concerning fibre reinforced composite substrates are established in Clause 7. SIST EN 4689:2012
EN 4689:2012 (E) 5 1 Scope This European Standard specifies the requirements for a two components flexible polyurethane top coat to be applied over EN 4687 and/or EN 4688 primers 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 The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2101, Aerospace series — Chromic acid anodizing of aluminium and wrought aluminium alloys EN 2334, Aerospace series — Chromic-sulphuric acid pickle of aluminium and aluminium alloys EN 2437, Aerospace series — Chromate conversion coatings (yellow) for aluminium and aluminium alloys EN 2436-006, Aerospace series — Paints and varnishes — Corrosion resistant chromate-free two component cold curing epoxy primer — Part 006: High corrosion resistance for military application EN 3212, Aerospace series — Paints and varnishes — Corrosion test by alternate immersion in a buffered sodium chloride solution 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 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 effect of thermal exposure 1) EN 4687, Aerospace series — Paints and varnishes — Chromate free non corrosion inhibiting two components cold curing primer for military application
EN 4688, Aerospace series — Paints and varnishes — Corrosion inhibiting two components cold curing primer for military application
EN 6042, Aerospace series — Organic compounds — Test method — Analysis by infrared spectroscopy 1) EN ISO 1513, Paints and varnishes — Examination and preparation of test samples
1) Published as ASD-STAN Prestandard at the date of publication of this standard (www.asd-stan.org). SIST EN 4689:2012
EN 4689:2012 (E) 6 EN ISO 1518, Paints and varnishes — Scratch test EN ISO 1519, Paints and varnishes — Bend test (cylindrical mandrel) EN ISO 1520, Paints and varnishes — Cupping test EN ISO 1524, Paints, varnishes and printing inks — Determination of fineness of grind EN ISO 2409, Paints and varnishes — Cross-cut test EN ISO 2431, Paints and varnishes — Determination of flow time by use of flow cups EN ISO 2811-1, Paints and varnishes — Determination of density — Part 1: Pyknometer method EN ISO 2811-2, Paints and varnishes — Determination of density — Part 2: Immersed body (plummet) method EN ISO 2811-3, Paints and varnishes — Determination of density — Part 3: Oscillation method EN ISO 2811-4, Paints and varnishes — Determination of density — Part 4: Pressure cup method EN ISO 2812-1, Paints and varnishes — Determination of resistance to liquids — Part 1: Immersion in liquids other than water EN ISO 2812-2, Paints and varnishes — Determination of resistance to liquids — Part 2: Water immersion method EN ISO 2813, Paints and varnishes — Determination of specular gloss of non-metallic paint films at 20°, 60° and 85° EN ISO 3251, Paints, varnishes and plastics — Determination of non-volatile-matter content EN ISO 3675, Crude petroleum and liquid petroleum products — Laboratory determination of density — Hydrometer method EN ISO 3678, Paints and varnishes — Print-free test EN ISO 3679, Determination of flash point — Rapid equilibrium closed cup method EN ISO 3680, Determination of flash/no flash — Rapid equilibrium closed cup method EN ISO 4628-2, Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity and size of defects, and of intensity of uniform changes in appearance — Part 2: Assessment of degree of blistering EN ISO 4628-8, Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity and size of defects, and of intensity of uniform changes in appearance — Part 8: Assessment of degree of delamination and corrosion around a scribe EN ISO 6270-1, Paints and varnishes — Determination of resistance to humidity — Part 1: Continuous condensation EN ISO 9117-1, Paints and varnishes — Drying tests — Part 1: Determination of through-dry state and through-dry time EN ISO 9117-3, Paints and varnishes — Drying tests — Part 3: Surface-drying test using ballotini EN ISO 9227, Corrosion tests in artificial atmospheres — Salt spray tests SIST EN 4689:2012
EN 4689:2012 (E) 7 EN ISO 9514, Paints and varnishes — Determination of the pot life of multicomponent coating systems — Preparation and conditioning of samples and guidelines for testing EN ISO 11507, Paints and varnishes — Exposure of coatings to artificial weathering — Exposure to fluorescent UV lamps and water EN ISO 11890-1, Paints and varnishes — Determination of volatile organic compound (VOC) content — Part 1: Difference method EN ISO 11909, Binders for paints and varnishes — Polyisocyanate resins — General methods of test ISO 7724-1, Paints and varnishes — Colorimetry — Part 1: Principles ISO 7724-2, Paints and varnishes — Colorimetry — Part 2: Colour measurement ISO 7724-3, Paints and varnishes — Colorimetry — Part 3: Calculation of colour differences MIL-PRF-5606H, Performance specification: Hydraulic fluid, petroleum base; aircraft, missile, and ordnance. (NATO H-515) 2) MIL-PRF-6081D, Performance specification: Lubricating oil, jet engine. (NATO O-133) 2) MIL-PRF-23699F, Performance specification: Lubricating oil, aircraft turbine engine, synthetic base, NATO code number O-156 2) MIL-DTL-83133G, Detail specification: Turbine fuel, aviation, kerosene type, JP-8 (NATO F-34), NATO F-35, and JP-8+100 (NATO F-37) 2) AMS 1526B, Cleaner for aircraft exterior surfaces water-miscible, pressure- spraying type 3)
AMS 1527B, Cleaner for aircraft exterior surfaces water-miscible, foam-on, pressure-spraying 3) AMS 1533A, Cleaner for exterior aircraft surfaces gel-type, solvent-base 3) DEF STAN 68-10, Corrosion Preventive, Water Displacing NATO Code: C-634 Joint Service Designation: PX-24 STANAG 4477, Specification for Paints and Paint Systems, Resistant to Chemical Agents and Decontaminants, for the Protection of Aerospace Military Equipment 4)
BS 1595-1:1986, Propan-2-ol (isopropyl alcohol) for industrial use — Part 1: Specification for propan-2-ol (isopropyl alcohol).
2) Published by: DoD National (US) MIL. Department of Defense http://www.defenselink.mil/ 3) Published by: SAE National (US) Society of Automotive Engineers http://www.sae.org/. 4) Published by: NATO EU MIL. - National (US) Mil. North Atlantic Treaty Organization http://www.nato.int/docu/standar d.htm. SIST EN 4689:2012
EN 4689:2012 (E) 8 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 3840 apply. 4 Surface pretreatments In accordance with EN 3837, the surface pretreatments applicable to aluminium alloy test panels are the following: EN 3837 — Procedure A : Sulfochromic pickling in accordance with EN 2334; EN 3837 — Procedure B : Chromate acid anodizing in accordance with EN 2101; EN 3837 — Procedure C : Chromate conversion coating in accordance with EN 2437. 5 Classification The top coat is classified according to the following types: TYPE I: Standard solvent content (≤ 680 g/l); TYPE II: Low volatile organic content (≤ 420 g/l); TYPE III: Waterborne (≤ 350 g/l). 6 Batch release and qualification testing 6.1 General The general requirements for qualification and batch release testing shall be in accordance with EN 3840. A minimum of three batches shall be tested for qualification purposes. 6.2 Qualification tests For product qualification, all tests defined in this standard, in the Tables 2 to 10, shall be performed. The test work to be undertaken for product qualification shall be in accordance with this specification.
In addition, the requirements for qualification of coatings in specific colours/gloss levels, shall be as defined in EN 3840. 6.3 Batch release testing The Manufacturer shall give evidence on the Test Report or the Certificate of Conformance that all the tests marked with the symbol * in this specification shall be performed for batch acceptance tests. 6.4 Compatibility of waterborne paints to solvent borne paints The waterborne top coat type III according to this specification shall be compatible to all primers qualified to EN 4687 and EN 4688. All tests to demonstrate the compatibility is defined in Tables 8 to 10 shall be performed. SIST EN 4689:2012
EN 4689:2012 (E) 9 Table 1 — General requirements
Material description Two components cold curing polyurethane top coat
Formulation Base: hydroxyl functional polyester or acrylic 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's instructions.
Technical specification EN 3840
Marking EN 3840
Storage stability EN 3840
Application and use Dry film thickness of (50 ± 5) µm (with primer SP-J-513-A-0013 or SP-J-513-A-0016 (25 ± 5) µm will be 65 µm to 85 µm)
Drying conditions (23 ± 2) °C / (50 ± 5) % RH for 7 (seven) days before testing. Finish is applied to the primer (EN 4687 or EN 2436-006) following drying up the primer for 4 (four) hours to 6 (six) hours as specified.
Quality assurance
EN 3840
Designation
Flexible polyurethane top coat
Packaging EN 3840
Health and safety EN 3840
SIST EN 4689:2012
EN 4689:2012 (E) 10 Table 2 — Physical and chemical characteristics – Delivery conditions Tests according to EN 3840 Test Test criteria Test requirements — * Condition Test method EN ISO 1513 (As received in original container) 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. The base material and curing agent shall each be in a condition such that stirring easily produces a smooth, uniform material which, after mixing in the proportion specified by the manufacturer, shall be suitable for spray application. 1
Non volatile matter Test method EN ISO 3251 Requirements % m/m Base Activator Thinner ± 2 % ref. value a b ± 2 % ref. value a b — 49 Volatile
organic content (VOC) Test method EN ISO 11890-1 Test condition Base + Activator + Thinner Requirements g/l < values stated in Clause 5 b 7 Flash point Test method EN ISO 3679 or EN ISO 3680 Requirements °C Base Activator Thinner ≥ reference value a ≥ reference value a ≥ reference value a 8 * Flow time Test method EN ISO 2431 (cup 3 or cup 4) Test condition Base + Activator + Thinner Requirements s ± 10 % reference value a b 5 Sedimentation rating Test method EN 3847 Test condition Base + Activator + Thinner Requirements ml/4 h ≤ 30 3 * Density Test method EN ISO 2811-1 to EN ISO 2811-4 Test condition (23 ± 2) °C / (50 ± 5) % RH Requirements g/cm3 Base Activator Thinner Type I Type II Type III ≤ 1,6 ≤ 1,7 ≤ 1,5 ≤ 1,0 ≤ 1,1 ≤ 1,1 — — — continued SIST EN 4689:2012
EN 4689:2012 (E) 11 Table 2 — Physical and chemical characteristics – Delivery conditions (continued) Tests according to EN 3840 Test Test criteria Test requirements 4 * Density hydrometer Test method EN ISO 3675 Test condition (23 ± 2) °C / (50 ± 5) % RH Requirements g/cm3 Base Activator Thinner Type I Type II Type III — — — ≤ 1,0 ≤ 1,1 ≤ 1,1 ≤ 0,9 — — 16 Isocyanate value Test method EN ISO 11909 Test condition — Requirements — Base Activator Thinner — Reference value b — 12 IR spectroscopy Test method EN 6042 Test condition — Requirements — Base Activator Thinner Reference value b Reference value b — 10 Fineness of grind Test method EN ISO 1524 Requirements µm Base Activator Thinner c c — — * Application properties and finish Test method None Panel EN 3837 — A1 or EN 3837 — A2 (2024-T3 unclad or 2024-T3 clad) Pretreatment EN 3837 — Procedure A or B or C Coating Primer according to EN 4687 and EN 4688 and coating to this standard. Test condition (23 ± 2) °C / (50 ± 5) % RH Requirements The paint film applied shall result in an opaque even finish free from runs, sags, wrinkling, pinholing or other defect. 20 * Pot life To be discussed with paint supplier Test method EN ISO 9514 (cup 3 or cup 4) Test condition Base + Activator + Thinner (23 ± 2) °C / (50 ± 5) % RH Requirements s or Pa s Equal to the reference value after 4 (four) hours, and shall still meet or fulfil all specification requirement. continued SIST EN 4689:2012
EN 4689:2012 (E) 12 Table 2 — Physical and chemical characteristics – Delivery conditions (concluded) Tests according to EN 3840 Test Test criteria Test requirements 21 * Drying time at the surface To be discussed with paint supplier Test method EN ISO 9117-3 Panel EN 3837 — A1 or EN 3837 — A2 (2024-T3 unclad or 2024-T3 clad) Pretreatment EN 3837 — Procedure A or B or C Coating Primer according to EN 4687 and EN 4688 and coating to this standard. Test condition (23 ± 2) °C / (50 ± 5) % RH Requirements h ≤ reference value 22 * Drying time – Print free test To be discussed with paint supplier Test method EN ISO 3678 Panel EN 3837 — A1 or EN 3837 — A2 (2024-T3 unclad or 2024-T3 clad) Pretreatment EN 3837 — Procedure A or B or C Coating Primer according to EN 4687 and EN 4688 a
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