1、ASD-STAN STANDARD NORME ASD-STAN ASD-STAN NORM prEN 4688 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 Corrosion inhibiting two components cold curing primer for military application Srie arospatiale Peinture et vernis Peinture primaire anti corrosion chromate deux composants polymrisant temprature ambiante pour applications militaires Luft- und Raumfahrt Bes
3、chichtungsstoffe Zweikomponenten Grundbeschichtung, korrosionshemmend, raumtemperaturhrtend, fr militrische Anwendung This “Aerospace Series“ Prestandard has been drawn up under the responsibility of ASD-STAN (The AeroSpace and Defence Industries Association of Europe - Standardization). It is publi
4、shed 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 this Prestandard, the technical content shall not be changed to an extent that interchangeability is affected, ph
5、ysically 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 Standard (prEN) to CEN (European Committee for Standardization) for formal vote and transformation to full European St
6、andard (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 conflicting with the EN. Edition approved for publication 1 July 2011 Comments should be sent within six months after the
7、 date of publication to ASD-STAN Non-metallic Material Domain Copyright 2011 by ASD-STAN prEN 4688:2011 (E) 2 Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Terms and definitions .5 4 Surface pretreatment .6 5 Classification 6 6 Batch release and qualification testing .6 7 Designation
8、 17 Foreword This standard was reviewed by the Domain Technical Coordinator of ASD-STANs Non-metallic Material Domain. 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
9、 4688:2011 (E) 3 1 Scope This European Standard defines the requirements for a two components, high corrosion inhibiting epoxy primer. The coating shall be suitable for use on suitably prepared metallic substrates, chromic acid anodized or conversion coated aluminium alloys, fibre reinforced composi
10、te materials and other suitably prepared substrates. 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 the referenced document (includin
11、g 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
12、alloys 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 varnis
13、hes 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 Chrom
14、ate free non corrosion inhibiting two components cold curing primer for military application 1)EN 4689, Aerospace series Paints and varnishes Two components cold curing polyurethane finish High flexibility and chemical agent resistance for military application 1)EN ISO 1513, Paints and varnishes Exa
15、mination and preparation of test samples 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 1) Published as
16、 ASD-STAN Prestandard at the date of publication of this standard (www.asd-stan.org). prEN 4688:2011 (E) 4 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 Pa
17、rt 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
18、 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
19、-metallic paint films at 20, 60 and 85 EN ISO 3251, Paints, varnishes and plastics Determination of non-volatile-matter content ISO 3270, Paints and varnishes and their raw materials Temperatures and humidities for conditioning and testing EN ISO 3675, Crude petroleum and liquid petroleum products L
20、aboratory 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 4623-2, Paints and varnishes De
21、termination of resistance to filiform corrosion Part 2: Aluminium substrates 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
22、-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 4628-10, Paints and varnishes Evaluation of degradation of c
23、oatings Designation of quantity and size of defects, and of intensity of uniform changes in appearance Part 10: Assessment of degree of filiform corrosion EN ISO 6270-1, Paints and varnishes Determination of resistance to humidity Part 1: Continuous condensation ISO 7724-1, Paints and varnishes Colo
24、rimetry Part 1: Principles ISO 7724-2, Paints and varnishes Colorimetry Part 2: Colour measurement prEN 4688:2011 (E) 5 ISO 7724-3, Paints and varnishes Colorimetry Part 3: Calculation of colour differences EN ISO 9117-1, Paints and varnishes Drying tests Part 1: Determination of through-dry state a
25、nd 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 Preparation and c
26、onditioning of samples and guidelines for testing EN ISO 11890-1, Paints and varnishes Determination of volatile organic compound (VOC) content Part 1: Difference method MIL-PRF-5606H, Performance specification: Hydraulic fluid, petroleum base; aircraft, missile, and ordnance. (NATO H-515) 2)MIL-PRF
27、-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),
28、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, Standard Practice for Operating Salt Spray (Fog) Apparatus 3)AMS 1533A, Cleaner for exterior aircraft surfaces gel-type, solvent-base 3)ASTM B 117, Cleaner for
29、 exterior aircraft surfaces gel-type, solvent-base 4)DEF STAN 68-10, Corrosion Preventive, Water Displacing NATO Code: C-634 Joint Service Designation: PX-24 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
30、) 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: ASTM National (US) American Society for Testing and Materials http:/www.astm.org/ prEN 4688:2011 (E) 6 4 Surface pretreatment In accordance w
31、ith EN 3837, the surface pretreatment applicable to aluminium alloy test panels are the following: EN 3837 Procedure A : Sulfochromic pickling in accordance with EN 2334; EN 3837 Procedure B : Chromic acid anodizing in accordance with EN 2101; EN 3837 Procedure C : Chromate conversion coating in acc
32、ordance with EN 2437. 5 Classification The primer is classified according to the following types: TYPE I: Standard solvent content (VOC 680 g/l); TYPE II: Low volatile organic (VOC 420 g/l); TYPE III: Waterborne (VOC 350 g/l). 6 Batch release and qualification testing 6.1 General The general require
33、ments for qualification and batch release testing shall be in accordance with (i.a.w.) EN 3840 and the applicable appendix for the specific material. 6.2 Qualification tests For product qualification, all tests defined in this standard, in the Tables 2 to 7, shall be performed. A minimum of three ba
34、tches shall be tested for qualification purposes. 6.3 Batch acceptance 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 o
35、f waterborne paints to solventborne paints The waterborne primer type III shall be compatible to solventborne primers type I and type II according to this standard and to type I and type II primers to EN 4687. All tests to demonstrate the compatibility are defined in Table 7 and shall be performed.
36、6.5 Purchaser batch release testing The purchaser may perform any of the test of this specification deemed necessary to ensure continuing uniform quality in material shipments. prEN 4688:2011 (E) 7 Table 1 General requirements Material description Primer, corrosion inhibiting, for aerospace applicat
37、ions Formulation Base Activator Thinner if appropriate 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 See EN 3840. Applicati
38、on and use Dry film thickness of (25 5) m Drying conditions (23 2) C / (50 5) % RH for 7 (seven) days before testing, or after air drying for 4 (four) hours to 6 (six) hours before the application of the topcoat EN 4689. ISO 3270 for 7 (seven) days before application of the top EN 4689. Quality assu
39、rance See EN 3840. Designation Primer corrosion inhibiting Packaging See EN 3840. Health and safety See EN 3840. 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 the o
40、riginal container) Requirement Shall be free from contaminants and show no skinning, gelling, hard settlement, or other defect. 1 * Non volatile matter Test method EN ISO 3251 Requirement % m/m Base Activator Thinner 2 % reference value a b 2 % reference value a b 49 Volatile organic content (VOC) (
41、not Type I) Test method EN ISO 11890-1 Test condition Base Activator Thinner Requirement g/l reference value acontinued prEN 4688:2011 (E) 8 Table 2 Physical and chemical characteristics Delivery conditions (continued) Tests according to EN 3840 Test Test criteria Test requirements 7 Flash point Tes
42、t method EN ISO 3679 or EN ISO 3680 Requirement C Base Activator Thinner reference value a reference value a reference value a8 * Flow time Test method EN ISO 2431 Test condition Base Activator Thinner Requirement s 10 % reference value a b5 Sedimentation rating Test method EN 3847 Coating Base Acti
43、vator Thinner Requirement ml/4 h 30 3 * 4 * Density Test method EN ISO 2811-1 to EN ISO 2811-4 or EN ISO 3675 Test condition (23 2) C / (50 5) % RH Requirement g/cm3Base Activator Thinner aaa10 Fineness of grind Test method EN ISO 1524 Requirement m Base Activator Thinner cc * Application, propertie
44、s 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 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, sag
45、s, wrinkling, pinholing or other defects. 20 * Pot life Test method EN ISO 9514 Coating Base Activator Thinner Requirement s or Pa.s acontinued prEN 4688:2011 (E) 9 Table 2 Physical and chemical characteristics Delivery conditions (concluded) Tests according to EN 3840 Test Test criteria Test requir
46、ements 21 * Drying time at the surface Test method EN ISO 9117-3 Panel EN 3837 A1or EN 3837 A2 (2024-T3 unclad or 2024-T3 clad) Pretreatment EN 3837 Procedure A or B or C Coating Coating to this standard. Requirement h Type I 1 Type II 2,5 Type III 2 Type IV aType V a22 * Drying time Print free test
47、 Test method EN ISO 3678 Panel EN 3837 A1or EN 3837 A2 (2024-T3 unclad or 2024-T3 clad) Pretreatment EN 3837 Procedure A or B or C Coating Coating to this standard. Requirement h Type I 4 using a mass of 1 000 g Type II 5 using a mass of 1 000 g Type III 4 using a mass of 1 000 g Type IV aType V a23
48、 * Through dry time Test method EN ISO 9117-1 Panel EN 3837 A1or EN 3837 A2 (2024-T3 unclad or 2024-T3 clad) Pretreatment EN 3837 Procedure A or B or C Coating Coating to this standard. Requirement h 16 using a mass of 1 500 g * See 6.3. a The reference value is that established during qualification.bThe deviation is that compared to the reference value. cTo be agreed between manufacturer and customer. prEN 4688:2011 (E) 10 Table 3 Mechanical and physical characteristics Dried film Tests according to EN 3840 Test Test criteria Test requirements 24 * Cross cut adhesion Test method EN ISO 24
