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 Page 2 prEN 2435-05:2005 Foreword This standard was reviewed by the 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 st
8、andard has received approval for Publication. Contents Page 1 2 3 4 5 5.1 5.2 6 7 Scope 3 Normative references 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
9、 13 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 anodised or conversion coated aluminium alloys and other suitably prepared substrates. 2 Normative
10、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 publications are listed hereafter. For dated references, subsequent amendments to or revisions of any o
11、f 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 amendments). IS0 151 3, IS0 151 7, IS0 151 8, IS0 151 9, IS0 1520, IS0 1524, IS0 2409, IS0 2431, IS0
12、 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 for testing Paints and varnishes - Surface-drying test - Ballotini method Paints and varnishe
13、s - 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 - Cross-cut test Paints and varnishes - Determination of flow time by use of flow cups Paints and
14、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 - Patt 3: Oscillation method Paints and varnishes - Determination of density - Patt 4: Pressure cu
15、p 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, varnishes and plastics - Determination of non-volatile-matter content Paints and varnishes and their
16、 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-free test Determination of flash point - Rapid equilibrium closed cup method Determination of
17、 flashho flash - Rapid equilibrium closed cup method Paints and varnishes - Determination of resistance to filiform corrosion - Patt 2: Aluminium substrates 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, I
18、S0 11890-1, 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 varn
19、ishes - 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 Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and size of defect
20、s, and of 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 varnis
21、hes - Colorimetry - 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 -
22、 Determination 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) co
23、ntent - Patt 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
24、 buffered 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 rati
25、ng ) Aerospace 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 Page 5 prEN 2435-05:2005 Marking Storage stability 4 Classi
26、fication See EN 3840. See EN 3840. The primer is classified according to the following types and classes: Type I: 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.
27、IS0 3270 for 168 h before testing. See EN 3840. 5 Batch release and qualification testing Packaging Health and safety 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 qualif
28、ication purposes. 5.2 Batch acceptance testing For batch acceptance the tests marked with the symbol * shall be performed. Table 1 - General requirements See EN 3840. See EN 3840. Material description Epoxy primer, with corrosion resistance chromate pigments, for aerospace applications Formulation P
29、reparation Base - epoxy resin Activator with polyamide and/or amine resin Thinner These components shall be mixed 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 thick
30、ness of (25 k 5) pm I I Quality assurance I See EN 3840. Page 6 prEN 2435-05:2005 I* Table 2 - Physical and chemical characteristics - Delivery conditions Non volatile matter 2 reference value 2 reference 2 reference value value k 2 % ref. k 2 % ref. 10 Fineness of grind Test Test criteria Test req
31、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 defect which will prevent satisfactory application to produce a defect free film. IS0
32、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 content (VOC) (Type II only) test method test condition requirement test method 7 Fl
33、ash 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 + activator + thinner test condition Irequirement m1/4 h I g30 I test method I IS0 2
34、81 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. value ab test method IS0 15 4 requirement base I activator thinner 30 I continued I
35、I Page 7 prEN 2435-05:2005 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
36、. test method IS0 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
37、 EN 3837 - A2 Application, 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
38、using a mass of 1 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 require
39、ment I h I Type I 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. Page 8 prEN 2435-05:2005 29 * Table 3 - Mechanical and physical chara
40、cteristics - Dried film Scratch resistance test method pretreatment panel IS0 1518 EN 3837 - Process A or B or C EN 3837 - 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
41、. annex E panel factor (Class B only) pretreatment EN 3837 - A2 EN 3837 - Process A, B or C 25 Bend test requirement test 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
42、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 (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 * Sl
43、ow deformation I pretreatment I EN 3837 - Process B and C coating I coating to this standard I =Adition I IS03270 I requirement 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 IS
44、03270 cylindrical mandrel I panel I EN 3837 - A6 I =Adition I (-55k2)“C I I reauirement I mandrel - 6 mm a Substrate not exposed No cracking or detachment (x10 magnification) 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
45、EN 3840 test 46 2 3 mm 38 pretreatment coating 37 EN 3837 - Process B and C coating to this standard 34 requirement Table 4 - Environmental exposure/testing - Dried film EN 3840 test 24 classification 1 EN 3840 test 29 2 1 500 g a IS0 4628-2, degree of blistering O Test test method panel pretreatmen
46、t Thermal exposure (resistance to high temperature) IS0 2812-2 EN 3837 - A2 EN 3837 - Process B and C Resistance to humidity requirement Water behaviour EN 3840 test 24 classification 1 EN 3840 test 29 2 1 500 g a IS0 4628-2, degree of blistering O Test criteria I Test requirements test method I EN4
47、160 panel I EN 3837 -A2 pretreatment I EN 3837 - Process B and C coating I coating to this standard I (150 k 2) OC, 24 h test condition test method I IS0 6270-1 panel I EN 3837 -A2 (40 k 2) OC, (95 to 100) % RH, 500 h test condition coating I coating to this standard (40 k 2) OC, 168 h test conditio
48、n a Substrate not exposed No cracking or detachment (x10 magnification) The time lag between exposure and testing shall not exceed 0,5 h Page 10 prEN 2435-05:2005 42 Table 5 - Corrosion tests - Dried film Resistance to neutral salt according to EN 3840 Test Resistance to “ alternate immersion 43 Fil
49、iform corrosion resistance Test criteria test method panel pretreatment coating test condition requirement Test method panel pretreatment test requirement test method panel pretreatment coating test condition requirement Test req ui remen ts IS0 7253 EN 3837 - Al EN 3837 - Process A, B or C as specified coating to this standard (35 k 2) OC, 3 O00 h, Procedure Ba (35 k 2) OC, 1 O00 h, Procedure A and C a 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 EN 3212 EN 3837 -
