AECMA PREN 2434-05-2004 Aerospace series Paints and varnishes Two component cold curing polyurethane finish Part 05 High flexibility and chemical agent resistance for military appl.pdf

1、AECMA STANDARD NORME AECMA AECMA NORM Edition approved for publication 31 August 2004 prEN 2434-05 Edition P 1 August 2004 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 and

2、varnishes Two component cold curing polyurethane finish Part 05: High flexibility and chemical agent resistance for military application Srie arospatiale Peintures et vernis Peinture de finition polyurthane, deux composants polymrisant temprature ambiante Partie 05: Haute flexibilit et rsistance aux

3、 substances chimiques pour applications militaires Luft- und Raumfahrt Anstrichstoffe Zwei komponenten Polyurethan-Decklack kalthrtend Teil 05: Hohe Elastizitt und Bestndigkeit gegen Chemikalien fr militrische Anwendung This “Aerospace Series“ frestandard has been drawn up under the responsibility o

4、f AECMA-STAN (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, t

5、he technical 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

6、 (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 conflicting with the EN.

7、I I Copytight 2004 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 2434-05:2004 Foreword This standard was reviewed by the

8、Domain Technical 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 Scope 3 2 Normative referenc

9、es . 3 Definitions 5 4 Classification . 5 5 Batch release and qualification testing . 5 5.1 Qualification tests 5 5.2 Batch acceptance testing . 6 6 Designation 16 7 Requirements for fibre reinforced composites 16 Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by

10、IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 3 prEN 2434-05:2004 1 Scope This standard specifies the requirements for a two component flexible polyurethane topcoat to be applied over EN 2435-05 or EN 2436-06 primer mainly for ext

11、erior 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 instructionirable 1. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publi

12、cations. These normative references are cited at the appropriate places in the text and the publications 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 revisio

13、n. For undated references the latest edition of the publication referred to applies (including amendments). 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 281 2-2, IS0 281 3, IS0 3251, Paints and

14、 varnishes - Examination and preparation of samples 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 - Determina

15、tion of fineness of grind Paints and varnishes - Cross-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 P

16、aints and varnishes - Determination of density - Patt 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 liqu

17、ids - Patt 2: Water immersion method Paints and varnishes - Determination of specular gloss of non-metallic paint films at 20, 60“ and 85“ Paints, varnishes and plastics - Determination of non-volatile-matter content Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided

18、by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 4 prEN 2434-05:2004 IS0 3270, IS0 3675, IS0 3678, IS0 3679, IS0 3680, IS0 4623-2, IS0 4628-2, IS0 4628-8, Paints and varnishes and their raw materials - Temperatures and humidities

19、for conditioning and testing Crude petroleum and liquid petroleum products - Laboratory determination of density - Hydrometer method Paints and varnishes - Print-free fest Determination of flash point - Rapid equilibrium closed cup method Determination of flashho flash - Rapid equilibrium closed cup

20、 method Paints and varnishes - Determination of resistance to filiform corrosion - Patt 2: Aluminium substrates Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Patt 2: Assessment of degree

21、 of blistering Paints and varnishes - Evaluation 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 IS0 4628-1 O, Paints and varnishes - Evaluation of degradation of coatings

22、- Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Patt IO: Assessment of IS0 6270-1, IS0 7253, IS0 7724-1, IS0 7724-2, IS0 7724-3, IS0 91 17, IS0 9514, IS0 11341, degree of filiform corrosion Paints and varnishes - Determination of resistance to humid

23、ity - Patt I: Continuous condensation Paints and varnishes - Determination of resistance to neutral salt spray (fog) Paints and varnishes - Colorimetry - Patt I: Principles Paints and varnishes - Colorimetry - Patt 2: Colour measurement Paints and varnishes - Colorimetry - Patt 3: Calculation of col

24、our differences Paints and varnishes - Determination of through-dry state and through-dry time - Method of test Paints and varnishes - Determination of the pot-life of liquid systems - Preparation and conditioning of samples and guidelines for testing Paints and varnishes - Artificial weathering and

25、 exposure to attificial radiation - Exposure to filtered xenon-arc radiation IS0 11890-1, Paints and varnishes - Determination of volatile organic compound (VOC) content - Patt I: Difference method IS0 11890-2, Paints and varnishes - Determination of volatile organic compound (VOC) content - Patt 2:

26、 Gas-chromatographic method IS0 1 1909, Binders for paints and varnishes - Polyisocyanate resins - General methods of test IS0 15710, Paints and varnishes - Corrosion testing by alternate immersion in and removal from a buffered sodium chloride solution Copyright Association Europeene des Constructe

27、urs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 5 prEN 2434-05:2004 EN 2435-05, EN 2436-06, EN 3837, EN 3840, EN 3847, EN 4160, EN 6042, Aerospace series - Paints and varnishes - Corrosion res

28、istant chromated two component cold curing epoxy primer - Part 05: High corrosion resistance for military application ) Aerospace series - Paints and varnishes - Corrosion resistant chromate-free two component cold curing epoxy primer - Part 06: High corrosion resistance for military application ) A

29、erospace 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 ) Aerospace series - Non-metall

30、ic materials - Paints and varnishes - Test methods - Determination of the effects of thermal exposure Aerospace series - Organic compounds - Test method - Analysis by infrared spectroscopy STANAG 4477, Specification for paints and paint systems resistant to chemical agents an decontaminations for pr

31、otection of aerospace military equipment 2, 3 Definitions For the purposes of this standard, the definitions given in EN 3840 apply. 4 Classification The topcoat is classified according to the following types and classes: Type I: Standard solvent content; Type II: Low volatile organic content ( 90 u

32、nits at 60“ and 80 units at 20“. 5 Batch release and qualification testing 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. 1) Published as AECMA Pre

33、standard at the date of publication of this standard 2) Published by: NATO Military Agency for Standardization (MAS); B-I 110 Brussels Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitt

34、ed without license from IHS-,-,-Page 6 prEN 2434-05:2004 5.2 Batch acceptance testing For batch acceptance the tests marked with the symbol * shall be performed. Table 1 - General requirements Material description Formulation Preparation Technical specification Marking Storage stability Application

35、and use Drying conditions Freedom from defects Quality assurance Packaging Health and safety Two component cold curing polyurethane topcoat Base: hydroxyl functional polyester or acrylic resins Activator: a polyisocyanate activator solution Thinner: if required These components shall be mixed in sim

36、ple whole number proportions, by volume or weight, in accordance with the manufacturers instructions. EN 3840 See EN 3840. See EN 3840. Dry film thickness of (50k5) pm (with primer EN 2435-05 or EN 2436-06 (25 k 5) pm will be 65 pm to 85 pm) IS0 3270 for 168 h before testing. Finish is applied to th

37、e primer (EN 2435-05 or EN 2436-06) following drying up the primer for 4 hours to 6 hours as specified See EN 3840. See EN 3840. See EN 3840. See EN 3840. Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot for ResaleNo reproduction o

38、r networking permitted without license from IHS-,-,-Page 7 prEN 2434-05:2004 g/l Table 2 - Physical and chemical characteristics - Delivery conditions 90 units at 60“ and 80 units at 20“ 31 coating 25 EN 2435-05 or EN 2436-06 and coating to this standard Test Specular gloss IR reflection factor Bend

39、 test cylindrical mandrel a Primer not exposed Test criteria Test requirements test method I IS0 2813 panel I EN 3837 -A2 pretreatment I EN 3837 - Process A or B or C I IS03270 test condition test method I EN 3840, annex E panel EN 3837 - A2 2024-T3 clad standard I IS03270 test condition requirement

40、 I to be agreed between purchaser and supplier test method I IS0 1519 panel I EN 3837 -A6 pretreatment I EN 3837 - Process B (- 55 k 2) “C test condition requirement I mandrel - 6 mm a No cracking or detachment (x10 magnification) Copyright Association Europeene des Constructeurs de Materiel Aerospa

41、tial Provided by IHS under license with AECMANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 12 prEN 2434-05:2004 requirements EN 3840 test 24 classification 1 I I EN 3840 test 29 2 1 500 g a Table 4 - Environmental exposure/testing - Dried film Test Test crit

42、eria Test req ui remen ts according to EN 3840 38 Thermal exposure (resistance to high temperature) I test method I EN 4160 I panel I EN 3837 - A2 EN 3837 - Process B and C EN 2435-05 or EN 2436-06 and coating to this standard (150 k 2) OC, 24 h EN 3840 test 24 classification 1 EN 3840 test 29 2 1 5

43、00 g a EN 3840 test 46 2 5 mm IS0 6270-1 EN 3837 - A2 pretreatment coating test condition requirements 37 Resistance to humidity test method panel pretreatment EN 3837 - Process B and C coating EN 2435-05 or EN 2436-06 and coating to this standard I (40 k 2) OC, (95 to 100) % RH, 500 h I :idition re

44、quirements EN 3840 test 24 classification 1 EN 3840 test 29 2 1 500 g a IS0 4628-2, degree of blistering O 34 Water behaviour I test method I IS0 2812-2 EN 3837 - A:, EN 3837 - Process B and C pretreatment coating EN 2435-05 or EN 2436-06 and coating to this standard I :idition I (40 k 2) OC, 168 h

45、+ test method IS0 4628-2, degree of blistering O IS0 11341, cycle A 40 Artificial weathering I panel I EN 3837 - A2 EN 3837 - Process A or B or C pretreatment coating EN 2435-05 or EN 2436-06 and coating to this standard I light 4 h, humidity 4 h, for 1 O00 h I :idition Test 27 20 % reduction from i

46、nitial value Test 30 AE 2 units requirements a Substrate not exposed No cracking or detachment (x10 magnification) The time lag between exposure and testing shall not exceed 0,5 h Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMANot fo

47、r ResaleNo reproduction or networking permitted without license from IHS-,-,-Page 13 prEN 2434-05:2004 pretreatment coating test condition Table 5 - Corrosion tests - Dried film EN 3837 - Process A or B or C as specified EN 2435-05 or EN 2436-06 and coating to this standard (35 k 2) OC, 3 O00 h Proc

48、edure B a (35 k 2) OC, 1 O00 h Procedure A and C a Tests accordi ng to EN 3840 requirements 42 EN 3840 test 24 classification 1 EN 3840 test 29 2 1 500 g IS0 4628-8, no corrosion more than 1,5 mm from the scratch IS0 4628-2, degree of blistering O 41 coating 43 EN 2435-05 or EN 2436-06 and coating t

49、o this standard Test requirements Resistance to neutral salt spray EN 3840 test 24 classification 1 EN 3840 test 29 2 1 500 g IS0 4628-8, no corrosion more than 1,5 mm form the scratch IS0 4628-2, degree of blistering O Resistance to alternate immersion pretreatment coating Filiform corrosion resistance EN 3837 - Process B and C EN 2435-05 or EN 2436-06 and coating to this standard Test criteria I re