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    ASD-STAN PREN 4689-2011 Aerospace series Paints and varnishes Two components cold curing polyurethane finish High flexibility and chemical agent resistance for military application.pdf

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    ASD-STAN PREN 4689-2011 Aerospace series Paints and varnishes Two components cold curing polyurethane finish High flexibility and chemical agent resistance for military application.pdf

    1、ASD-STAN STANDARD NORME ASD-STAN ASD-STAN NORM prEN 4689 Edition P 1 July 2011 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATIONAvenue de Tervuren, 270 - B-1150 Brussels - Tel. 32 2 775 8126 - Fax. 32 2 775 8131 - www.asd-stan.orgICS: Descriptors: ENGLISH VERS

    2、ION Aerospace series Paints and varnishes Two components cold curing polyurethane finish High flexibility and chemical agent resistance for military application Srie arospatiale Peinture et vernis Peinture de finition polyurthane deux composantspolymrisant temprature ambiante Haute flexibilit et rsi

    3、stance aux substances chimiques pour applications militaires Luft- und Raumfahrt Anstrichstoffe Zweikomponenten Polyurethan- Decklack, Raumtemperaturhrtend Hohe Elastizitt und Bestndigkeit gegen Chemikalien fr militrische Anwendung This “Aerospace Series“ Prestandard has been drawn up under the resp

    4、onsibility of ASD-STAN (The AeroSpace and Defence Industries Association of Europe - Standardization). It is published for the needs of the European Aerospace Industry. It has been technically approved by the experts of the concerned Domain following member comments. Subsequent to the publication of

    5、 this Prestandard, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and review by users and formal agreement of ASD-STAN, it will be submitted as a draft European Stan

    6、dard (prEN) to CEN (European Committee for Standardization) for formal vote and transformation to full European Standard (EN). The CEN national members have then to implement the EN at national level by giving the EN the status of a national standard and by withdrawing any national standards conflic

    7、ting with the EN. Edition approved for publication 1 July 2011 Comments should be sent within six months after the date of publication to ASD-STAN Non-metallic Material Domain Copyright 2011 by ASD-STAN prEN 4689:2011 (E) 2 Contents Page Foreword 2 Introduction .3 1 Scope 4 2 Normative references 4

    8、3 Terms and definitions .6 4 Surface pretreatments .7 5 Classification 7 6 Batch release and qualification testing .7 7 Requirements for fibre reinforced composites 25 8 Designation 25 Foreword This standard was reviewed by the Domain Technical Coordinator of ASD-STANs Non-metallic Material Domain.

    9、After inquiries and votes carried out in accordance with the rules of ASD-STAN defined in ASD-STANs General Process Manual, this standard has received approval for Publication. prEN 4689:2011 (E) 3 Introduction The requirements concerning fibre reinforced composite substrates are established in Clau

    10、se 7. prEN 4689:2011 (E) 4 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 t

    11、he same manufacturer applied in accordance with (i.a.w.) their instruction / Table 1. 2 Normative references The 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

    12、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 (yel

    13、low) 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

    14、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 Determi

    15、nation 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 a

    16、pplication 1)EN 4688, Aerospace series Paints and varnishes Corrosion inhibiting two components cold curing primer for military application 1)EN 2436-006, Aerospace series Paints and varnishes Corrosion resistant chromate-free two component cold curing epoxy primer Part 006: High corrosion resistanc

    17、e 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). pr

    18、EN 4689:2011 (E) 5 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 Cro

    19、ss-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, Paint

    20、s 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

    21、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, Cru

    22、de 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 m

    23、ethod 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 Designat

    24、ion 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 ISO 7724-1, Paints and varnish

    25、es 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 prEN 4689:2011 (E) 6 EN ISO 9117-1, Paints and varnishes Drying tests Part 1: Determination of through-dry

    26、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 EN ISO 9514, Paints and varnishes Determination of the pot life of multicomponent coating systems Preparatio

    27、n 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

    28、 EN ISO 11909, Binders for paints and varnishes Polyisocyanate resins General methods of test 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)

    29、 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 exteri

    30、or 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 Join

    31、t 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 (isopro

    32、pyl alcohol). 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 3840 apply. 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

    33、) Published by: NATO EU MIL. - National (US) Mil. North Atlantic Treaty Organization http:/www.nato.int/docu/standar d.htm. prEN 4689:2011 (E) 7 4 Surface pretreatments In accordance with EN 3837, the surface pretreatments applicable to aluminium alloy test panels are the following: EN 3837 Procedur

    34、e 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: Standa

    35、rd 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

    36、 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 req

    37、uirements 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 per

    38、formed 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

    39、 10 shall be performed. prEN 4689:2011 (E) 8 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 comp

    40、onents shall be mixed in simple whole number proportions, by volume or weight, in accordance with the manufacturerss instructions. Technical specification EN 3840 Marking EN 3840 Storage stability EN 3840 Application and use Dry film thickness of (50 5) m (with primer SP-J-513-A-0013 or SP-J-513-A-0

    41、016 (25 5) m will be 65 m to 85 m) 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 poly

    42、urethane top coat Packaging EN 3840 Health and safety EN 3840 prEN 4689:2011 (E) 9 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 Sh

    43、all 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 w

    44、hich, 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

    45、 condition Base Activator Thinner Requirements g/l values stated in Clause 5 b7 Flash point Test method EN ISO 3679 or EN ISO 3680 Requirements C Base Activator Thinner reference value a reference value a reference value a8 * Flow time Test method EN ISO 2431 (cup 3 or cup 4) Test condition Base Act

    46、ivator Thinner Requirements s 10 % reference value a b5 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/cm3Base Activator Thinner Type I T

    47、ype II Type III 1,6 1,7 1,5 1,0 1,1 1,1 continued prEN 4689:2011 (E) 10 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 R

    48、equirements g/cm3Base 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 bReference value b 10 Fineness of grind Test method EN ISO 1524 Requirements m Base Activator Thinner cc * Application properties and finish Test method None Panel EN 3837 A1or EN 3837 A2 (2024-T3 unclad or 2024-T3 clad) Pretreatment EN 3837 Procedure A or B or C Coating Primer a


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