AECMA PREN 2435-05-2005 Aerospace Series Paints and Varnishes Corrosion Resistant Chromated Two Component Cold Curing Epoxy Primer Part 05 High Corrosion Resistance for Military Ap.pdf

1、AECMA STANDARD NORME AECMA AECMA NORM Edition approved for publication 31 January 2005 prEN 2435-05 Edition P 1 January 2005 Comments should be sent within six months after the date of publication to Non-metallic Material Domain AECMA-STAN ICs: Descriptors: ENGLISH VERSION Aerospace series Paints an

2、d varnishes Corrosion resistant chromated two component cold curing epoxy primer Part 05: High corrosion resistance for military application Srie arospatiale Luft- und Raumfahrt Peintures et vernis Anstrichstoffe Peinture primaire anti-corrosion Korrosionsbestndiger Zweikomponenten chromate, deux co

3、mposants Partie 05: Haute rsistance la corrosion pour Grundanstrich, kalthrtend Teil 05: Hoher Korrosionsschutz fr polymrisant temprature ambiante chromathaltig applications militaires militrische Anwendung This “Aerospace Series“ frestandard has been drawn up under the responsibility of AECMA-STAN

4、(The European Association of Aerospace Industries - 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 this frestandard, the technical

5、content shall not be changed to an extent that interchangeabilify is affected, physically or functionally, without re-identification of the standard. After examination and review by users and formal agreement of AECMA-STAN, it will be submitted as a draft European Standard (prEN) to CEN (European Co

6、mmittee 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 conflicting with the EN. I I Copytight

7、 2005 O by AECMA-STA1 Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 2 prEN 2435-05:2005 Foreword This standard was reviewed by the Domain Techni

8、cal Coordinator of AECMA-STANS Non-metallic Material Domain. After inquiries and votes carried out in accordance with the rules of AECMA-STAN defined in AECMA- STANS General Process Manual, this standard has received approval for Publication. Contents Page 1 2 3 4 5 5.1 5.2 6 7 Scope 3 Normative ref

9、erences 3 Definitions 4 Classification . 5 Batch release and qualification testing . 5 Qualification tests 5 Batch acceptance testing . 5 Designation 13 Requirements for fibre reinforced composites 13 Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under lic

10、ense with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 3 prEN 2435-05:2005 1 Scope This standard defines the requirements for a two component, chromated epoxy, high corrosion resistant primer. The coating shall be suitable for use on chromic acid anodi

11、sed or conversion coated aluminium alloys and other suitably prepared substrates. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publicati

12、ons are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendm

13、ents). IS0 151 3, IS0 151 7, IS0 151 8, IS0 151 9, IS0 1520, IS0 1524, IS0 2409, IS0 2431, IS0 281 1-1, IS0 281 1-2, IS0 281 1-3, IS0 281 1-4, IS0 2812-1, IS0 2812-2, IS0 3251, IS0 3270, IS0 3675, IS0 3678, IS0 3679, IS0 3680, IS0 4623-2. Paints and varnishes - Examination and preparation of samples

14、 for testing Paints and varnishes - Surface-drying test - Ballotini method Paints and varnishes - Scratch test Paints and varnishes - Bend test (cylindrical mandrel) Paints and varnishes - Cupping test Paints, varnishes and printing inks - Determination of fineness of grind Paints and varnishes - Cr

15、oss-cut test Paints and varnishes - Determination of flow time by use of flow cups Paints and varnishes - Determination of density - Patt I: Pyknometer method Paints and varnishes - Determination of density - Patt 2: Immersed body (plummet) method Paints and varnishes - Determination of density - Pa

16、tt 3: Oscillation method Paints and varnishes - Determination of density - Patt 4: Pressure cup method Paints and varnishes - Determination of resistance to liquids - Patt I: General methods Paints and varnishes - Determination of resistance to liquids - Patt 2: Water immersion method Paints, varnis

17、hes and plastics - Determination of non-volatile-matter content Paints and varnishes and their raw materials - Temperatures and humidities for conditioning and testing Crude petroleum and liquid petroleum products - Laboratory determination of density - Hydrometer method Paints and varnishes - Print

18、-free test Determination of flash point - Rapid equilibrium closed cup method Determination of flashho flash - Rapid equilibrium closed cup method Paints and varnishes - Determination of resistance to filiform corrosion - Patt 2: Aluminium substrates Copyright Association Europeene des Constructeurs

19、 de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 4 prEN 2435-05:2005 IS0 4628-2, IS0 4628-8, IS0 4628-1 O, IS0 6270-1, IS0 7253, IS0 7724-1, IS0 7724-2, IS0 7724-3, IS0 91 17, IS0 9514, IS0 11890-

20、1, IS0 11890-2, EN 2434-05, EN 3212, EN 3837, EN 3840, EN 3847, EN 4160, Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensify of uniform changes in appearance - Patt 2: Assessment of degree of blistering Paints and varnishes - E

21、valuation of degradation of coatings - Designation of quantity and size of defects, and of intensify of uniform changes in appearance - Patt 8: Evaluation of corrosion around the scribe Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and size of defects, and of

22、 intensity of uniform changes in appearance - Patt IO: Assessment of degree of filiform corrosion Paints and varnishes - Determination of resistance to humidity - Patt I: Continuous condensation Paints and varnishes - Determination of resistance to neutral salt spray (fog) Paints and varnishes - Col

23、orimetry - Patt I: Principles Paints and varnishes - Colorimetry - Patt 2: Colour measurement Paints and varnishes - Colorimetry - Patt 3: Calculation of colour differences Paints and varnishes - Determination of through-dry state and through-dry time - Method of test Paints and varnishes - Determin

24、ation of the pot-life of liquid systems - Preparation and conditioning of samples and guidelines for testing Paints and varnishes - Determination of volatile organic compound (VOC) content - Patt I: Difference method Paints and varnishes - Determination of volatile organic compound (VOC) content - P

25、att 2: Gas-chromatographic method Aerospace series - Paints and varnishes - Two component cold curing polyurethane finish - Patt 05: High flexibilify and chemical agent resistance for military application ) Aerospace series - Paints and varnishes - Corrosion test by alternate immersion in a buffered

26、 sodium chloride solution Aerospace series - Paints and varnishes - Nature and method for surface preparation of test pieces in aluminium alloys 1) Aerospace series - Paints and varnishes - Technical specification Aerospace series - Paints and varnishes - Determination of sedimentation rating ) Aero

27、space series - Non-metallic materials - Paints and varnishes - Test methods - Determination of the effects of thermal exposure 3 Definitions See EN 3840. 1) Published as AECMA Prestandard at the date of publication of this standard Copyright Association Europeene des Constructeurs de Materiel Aerosp

28、atial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 5 prEN 2435-05:2005 Marking Storage stability 4 Classification See EN 3840. See EN 3840. The primer is classified according to the following types and classes: Type I

29、: Standard solvent content; Type II: Low volatile organic content ( 350 g/l). Drying conditions Freedom from defects Class A: Standard pigments; Class B: Low infrared reflective pigments. IS0 3270 for 168 h before testing. See EN 3840. 5 Batch release and qualification testing Packaging Health and s

30、afety 5.1 Qualification tests For product 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. 5.2 Batch acceptance testing For batch acceptance the tests marked with the symbol * shall be

31、performed. Table 1 - General requirements See EN 3840. See EN 3840. Material description Epoxy primer, with corrosion resistance chromate pigments, for aerospace applications Formulation Preparation Base - epoxy resin Activator with polyamide and/or amine resin Thinner These components shall be mixe

32、d in simple whole number proportions, by volume or weight, in accordance with the manufacturerss instructions. I I Technical specification I EN3840 I I Application and use I Dry film thickness of (25 k 5) pm I I Quality assurance I See EN 3840. Copyright Association Europeene des Constructeurs de Ma

33、teriel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 6 prEN 2435-05:2005 I* Table 2 - Physical and chemical characteristics - Delivery conditions Non volatile matter 2 reference value 2 reference 2 referenc

34、e value value k 2 % ref. k 2 % ref. 10 Fineness of grind Test Test criteria Test req ui remen ts according to EN 3840 * - test method IS0 1513 (as received in the original container) Condition requirement Shall be free from extraneous matter and show no skinning, gelling, hard settlement, or other d

35、efect which will prevent satisfactory application to produce a defect free film. IS0 3251 test method requirement % I base I activator I thinner k 2 % ref. k 2 % ref. value ab I valueab I- 49 IS0 1 1890-1, IS0 1 1890-2 base + activator + thinner g/l I ref. value IS0 3679 or IS0 3680 Volatile organic

36、 content (VOC) (Type II only) test method test condition requirement test method 7 Flash point requirement “C I base I activator I thinner 8* I test method I IS02431 Flow time I :idition I base + activator I requirement I s k IO % ref. value ab 5 I Sedimentation I test method I EN 3847 rating I base

37、 + activator + thinner test condition Irequirement m1/4 h I g30 I test method I IS0 281 1 I :idition I IS03270 base I activator I thinner requirement g/cm3 4* I Density I test method IS0 3675 IS0 3270 test condition hydrometer requirement g/cm3 base I activator thinner k 1 %ref. I valueab k 1 % ref.

38、 value ab test method IS0 15 4 requirement base I activator thinner 30 I continued I I Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 7 prEN 2435

39、-05:2005 Test Table 2 - Physical and chemical characteristics - Delivery conditions (concluded) Test criteria Tests according to EN 3840 Pot life * - requirement The paint film applied shall result in a opaque even finish free from runs, sags, wrinkling, pin holing or other defects. test method IS0

40、9514 20 * sor Pas 21 * Equal to the reference value after 4 h, and shall meet or fulfil all the specification requirements. 22 * pretreatment coating 23 * EN 3837 - Process A, B or C coating to this standard Drying time - Print free test Test requirements test method IS0 3678 panel EN 3837 - A2 Appl

41、ication, 1 test method 1 none properties and panel finish EN 3837 - A2 pretreatment coating coating to this standard EN 3837 - Process A or B or C pretreatment coating I :idition I IS03270 EN 3837 - Process A, B or C coating to this standard requirement Surface dry time h Type I 4 using a mass of 1

42、O00 g Type II 5 using a mass of 1 O00 g base + activator + thinner I :idition Through dry time require ment test method IS0 91 17 panel EN 3837 - A2 test method pretreatment coating panel EN 3837 - Process A, B or C coating to this standard EN 3837 - A2 I :idition I IS03270 requirement I h I Type I

43、1 Type II 2,5 I :idition I IS03270 I :idition I IS03270 I requirement I h I 16 a ? The deviation is that compared to the reference value (see Note ?). The reference value is that established during qualification. Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by I

44、HS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 8 prEN 2435-05:2005 29 * Table 3 - Mechanical and physical characteristics - Dried film Scratch resistance test method pretreatment panel IS0 1518 EN 3837 - Process A or B or C EN 3837

45、- A2 test method panel IS0 1520 EN 3837 - A:, test method panel IS0 7724 EN 3837 - A:, 31 requirement To be agreed between purchaser and supplier IR reflection test method EN 3840. annex E panel factor (Class B only) pretreatment EN 3837 - A2 EN 3837 - Process A, B or C 25 Bend test requirement test

46、 method To be agreed between purchaser and supplier IS0 1519 pretreatment coatina EN 3837 - Process B coatina to this standard Test criteria n Test Test req ui remen ts according to EN 3840 24 * I test method I IS0 2409 Cross cut I panel I EN 3837 - A2 I pretreatment EN 3837 - Process A or B and C (

47、B and C are I preferred) I coating I coating to this standard I =Adition I IS03270 I coating I coating to this standard I =Adition I IS03270 I I I requirement I 2 1 500 ga 46 * Slow deformation I pretreatment I EN 3837 - Process B and C coating I coating to this standard I =Adition I IS03270 I requi

48、rement I 2 3 mm 30 * Colour I pretreatment I EN 3837 - Process A, B or C coating I coating to this standard I =Adition I IS03270 coating I coating to this standard I =Adition I IS03270 cylindrical mandrel I panel I EN 3837 - A6 I =Adition I (-55k2)“C I I reauirement I mandrel - 6 mm a Substrate not

49、exposed No cracking or detachment (x10 magnification) Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 9 prEN 2435-05:2005 requirement Tests according to EN 3840 EN 3840 test 24 classification 1 EN 3840 test 29 2 1 500 g a EN 3840 test 46 2 3 mm 38