1、 PERFORMANCE SPECIFICATION COATING: POLYURETHANE, AIRCRAFT AND SUPPORT EQUIPMENT This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the requirements for polyurethane coating with a maximum volatile organi
2、c compound (VOC) and maximum volatile organic hazardous air pollutants (VOHAPs). The coating is furnished in kit form. 1.2 Classification. The coating covered by this specification is divided into the following types and classes (see 6.2): 1.2.1 Type. The types of coatings are as follows: Type I - A
3、ircraft application (420 grams/liter g/l maximum VOC content) Type II - Support equipment application (340 g/l maximum VOC content) Type III - Aircraft and support equipment application (50 g/1 maximum VOC content) Type IV- Aircraft application with extended weatherability (420 g/l maximum VOC conte
4、nt) 1.2.2 Class. The classes of coatings are as follows: Class H High-solids formulation Class W Water-borne formulation Comments, suggestions, or questions on this document should be addressed to: Commander, Naval Air Warfare Center Aircraft Division, Code 4L8000B120-3, Highway 547, Lakehurst, NJ 0
5、8733-5100 or emailed to michael.sikoranavy.mil. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at https:/assist.daps.dla.mil. AMSC N/A FSC 8010NOT MEASUREMENT SENSITIVEMIL-PRF-85285E 12 January 2012 SUPERSEDING M
6、IL-PRF-85285D w/AMENDMENT 3 2 February 2009 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-85285E 2 1.3 Part or Identifying Number (PIN). The PINs to be used for polyurethane coatings acquired to this specification are created as follows: M8
7、5285 - X - X - XXXXX - XXXX Specification identifier Type designator 1 = Type I 2 = Type II 3 = Type III 4 = Type IV Class designator (H or W) FED-STD-595 Color designation (see 6.7) Kit size designator (see 1.3.1) 1.3.1 Kit size. The coatings covered by this specification should be purchased by vol
8、ume, the unit being a kit containing two or three components. The kit component sizes need not be of the same size. When this part numbering system is used, the kit size is to be identified as: Kit Size 1/ Kit Size Designator Less than one pint 2/ 4-pint (0.47-liter) 004P 4-quart (0.95-liter) 004Q 4
9、-gallon (3.79-liter) 004G 20-gallon (75.7-liter) 020G 1/ The kit size and its designator may be modified for ease of procurement and is not limited. 2/ Designators for less than pint size kits (small touch-up kits) should be expressed in cubic centimeters (cc) and should be designated by “C.” Exampl
10、e: A type I, class H, 50 cc kit, gloss red should be designated M85285-1-H-11136-050C. 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specification. This section does not include documents cited in other sections of this specificat
11、ion or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in sections 3 and 4 of this specification, whether or not they are li
12、sted. 2.2 Government documents. 2.2.1 Specifications and standards. The following specifications and standards form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. Provided by IHSNot fo
13、r ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-85285E 3 FEDERAL SPECIFICATION TT-R-2918 - Remover, Paint, No Hazardous Air Pollutants (HAPs). FEDERAL STANDARD FED-STD-595 - Colors Used in Government Procurement Color numbers 34095, 13538, 17925, 36375. DEPARTMEN
14、T OF DEFENSE SPECIFICATIONS MIL-DTL-5541 - Chemical Conversion Coatings on Aluminum and Aluminum Alloys. MIL-DTL-5624 - Turbine Fuel, Aviation, Grades JP-4 and JP-5. MIL-A-8625 - Anodic Coatings for Aluminum and Aluminum Alloys. MIL-PRF-23377 - Primer Coatings: Epoxy, High-Solids. MIL-PRF-23699 - Lu
15、bricating oil, Aircraft Turbine Engine, Synthetic Base, NATO Code Number O-156 MIL-R-81294 - Remover, Paint, Epoxy, Polysulfide, and Polyurethane Systems MIL-T-81772 - Thinner, Aircraft Coating. MIL-PRF-83282 - Hydraulic Fluid, Fire Resistant, Synthetic Hydrocarbon Base, Metric, NATO Code Number H-5
16、37. MIL-PRF-85570 - Cleaning Compound, Aircraft, Exterior. MIL-PRF-85582 - Primer Coatings: Epoxy, Waterborne. (Copies of these documents are available online at https:/assist.daps.dla.mil/quicksearch/ or https:/assist.daps.dla.mil or from the Standardization Document Order Desk, 700 Robbins Avenue,
17、 Building 4D, Philadelphia, PA 19111-5094.) 2.2.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are th
18、ose cited in the solicitation or contract. UNITED STATES ENVIRONMENTAL PROTECTION AGENCY (EPA) EPA Method 311 - HAPS in Paints and type II, 5 percent; when tested in accordance with 4.6.7.1. 3.7.8.2 Low-temperature flexibility (Type I, Type III and Type IV only). The type I, type III, and type IV co
19、atings, at a temperature of -51 3 C (-60 5 F), shall exhibit no cracking when bent, coated side away, over a 1.0 inch (in.) 25.4 millimeter (mm) mandrel for gloss and semi-gloss colors, and over a 2.0 in. (50.8 mm) mandrel for camouflage colors, when tested in accordance with 4.6.7.2. 3.8 Resistance
20、 properties. 3.8.1 Fluid resistance. When immersed in lubricating oil conforming to MIL-PRF-23699, hydraulic fluid conforming to MIL-PRF-83282, and JP-5 fuel conforming to MIL-DTL-5624, the coating shall not exhibit any blistering, softening, or other coating defects. Slight staining of the coating
21、is acceptable (see 4.6.8). 3.8.2 Weather resistance. For types I, II, and III, after exposure in Xenon-arc weatherometer for 500 hours as specified in 4.6.9: (a) 60 specular gloss of the coating shall be a minimum of 80 Gloss Units (G.U.) for gloss colors; a minimum of 15 G.U. for semi-gloss colors;
22、 a maximum of 5 G.U. for camouflage colors, and (b) the coating color difference (E) shall have a value of less than 1.0 when compared to an unexposed sample of the same batch using CIELAB color coordinates. For type IV, after exposure in Xenon-arc weatherometer for 3000 hours as specified in 4.6.9:
23、 (a) The 60 specular gloss of gloss colors shall have a change in Gloss Units (G.U.) of less than 20 from the unexposed initial value. (b) The semi-gloss colors shall have a minimum of Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-85285E 10
24、 15 G.U. at 60. (c) The camouflage colors shall have a change in G.U. of less than 3 at 60 and 85 from the unexposed initial values, and (d) the coating color difference (E) shall have a value of less than 1.0 when compared to an unexposed sample of the same batch using CIELAB color coordinates. 3.8
25、.3 Humidity resistance. The coating shall withstand exposure for no less than 30 days in a humidity cabinet maintained at 49 2 C (120 3 F) and 100 percent relative humidity (RH) without blistering, softening, exhibiting any loss of adhesion, nor other film defects when tested as specified in 4.6. 3.
26、8.4 Heat resistance (color change). The coating after exposure shall have a color difference (E) less than or equal to 1.0 when compared to an unexposed sample of the same batch and tested as specified in 4.6.10 using CIELAB color coordinates. 3.8.5 Solvent resistance (cure). The coating shall withs
27、tand 25 double rubs with a cotton terrycloth rag soaked in methyl ethyl ketone (MEK) solvent (see 6.10) when tested in accordance with 4.6.11. Rubbing through to bare metal indicates failure of the coating due to improper cure. 3.8.6 Tape resistance. The coating shall not exhibit permanent marring c
28、aused by masking tape applied to the coated test panels, when tested in accordance with 4.6.12. 3.9 Working properties. 3.9.1 Mixing. The components of the coating, including thinner if applicable (see 3.5.1.3), shall homogeneously blend when mixed by a paint shaker in the volume mixing ratio specif
29、ied by the manufacturer. Within one hour of mixing, the admixed coating shall not separate into visually distinct layers or exhibit foaming that persists one hour or more after mixing. 3.9.2 Application. The coating shall be applied by conventional, airless, HVLP (High Volume Low Pressure), or elect
30、rostatic (class H only) spray application. When spray is applied at 15.6 to 32.2 C (60 to 90F) and a relative humidity of 20 to 80 percent, the coating material shall yield a smooth, uniform film at a dry-film thickness of 1.7 to 2.3 mil. No orange peel (wavy appearance) shall be evident when viewed
31、 from six feet away. When reducing the coating, caution shall be taken not to exceed the maximum VOC content of 420 g/l for types I and IV, 340 g/l for type II, and 50 g/l for type III. 3.9.3 Cleanability. The coating shall maintain a cleaning efficiency of not less than 75 percent for semi-gloss an
32、d camouflage colors and 90 percent for gloss colors, when cleaned in accordance with 4.6.13 through 4.6.13.5. 3.9.4 Strippability. Coatings shall be tested in accordance with Methods A and B of 4.6.14, and a minimum of 90 percent of the coating shall be stripped by one of the methods. 3.10 Identific
33、ation of material. Individual containers greater than 1 pint and cases of containers 1 pint or less, shall bear permanent labels showing the information contained herein. Approved modified coatings shall be clearly identified on the label ( 6.5.3.1). Provided by IHSNot for ResaleNo reproduction or n
34、etworking permitted without license from IHS-,-,-MIL-PRF-85285E 11 Specification MIL-PRF-85285E, “Coating: Polyurethane, Aircraft and Support Equipment” Component A, B, or C (as applicable) Type and class Color (name and FED-STD-595 color number) Manufacturers name, product number, and batch number
35、Date of manufacture by month and year VOC content in grams/liter Net contents Mixing and thinning instructions 3.10.1 Component containers. All containers of toxic and hazardous chemicals and materials shall be labeled in accordance with the applicable federal, state, and municipal laws, statutes, r
36、egulations, and ordinances. In addition to the labeling, the following shall appear on each component container in every kit, on each exterior shipping container, and on the case of containers less than 1 pint. CAUTION THIS COATING MATERIAL IS TOXIC AND FLAMMABLE (if applicable) DO NOT USE IN CONFIN
37、ED AREAS DO NOT USE WHERE THERE ARE OPEN FLAMES, ARCING EQUIPMENT, HOT SURFACES, NOR WHERE SMOKING IS PERMITTED. USE ONLY WITH ADEQUATE VENTILATION. AVOID BREATHING OF VAPOR. DO NOT GET IN EYES, ON SKIN, ON CLOTHING. IN CASE OF CONTACT, IMMEDIATELY FLUSH EYES OR SKIN WITH PLENTY OF WATER. FOR EYES,
38、GET MEDICAL ATTENTION. 3.10.2 Lid (component B only). Each lid of component B material shall have a red printed label with the following information: “USE CAUTION. OPEN SLOWLY.“ 3.10.3 Precautions. Each kit shall include a sheet listing the following precautions: a. The surface to be coated must be
39、clean (free of oil, dust, etc.) b. Spray equipment must be adequately grounded. Clean equipment immediately after use. For class W only, use water followed by thinner. For all other classes use thinner only. In all cases thinner conforming to MIL-T-81772, type I shall be used. c. Mix only the amount
40、 of coating to be used within four hours. d. Never mix coating or individual component from one vendor with that of another vendor. Components from different kits are not interchangeable. For example, do not use Component A in white with component B in gray. Provided by IHSNot for ResaleNo reproduct
41、ion or networking permitted without license from IHS-,-,-MIL-PRF-85285E 12 e. Apply to pretreated metal or appropriately prepared organic matrix composite surfaces. f. Dispose of, without opening, any container that is bulged or deformed. g. Open component B carefully. If the contained material is n
42、ot clear, dispose of it. h. Perform production type operations only in specifically designated areas with local exhaust ventilation and other environmental control measures, as may be recommended on the basis of an on-site industrial hygiene survey. i. Perform touch-up type operations only in areas
43、with good ventilation (such as a hangar deck or in a hangar with the doors open). Do not expose unprotected personnel in adjacent areas to mist, spray, or vapor. Application shall be restricted to brush, roller, or self-pressurized spray kit. No one person shall apply more than one quart of polyuret
44、hane coating by self-pressurized spray in any 24-hour period. 4. VERIFICATION 4.1 Classification of inspections. The inspection requirements specified herein are classified as follows: a. Qualification inspection (see 4.3). b. Conformance inspection (see 4.4). 4.2 Inspection conditions. Unless other
45、wise specified, all inspections shall be performed in accordance with the conditions specified in ASTM D3924, and in duplicate. Unless otherwise stated in the test method or paragraph herein, room temperature shall be 21 5C (70 10F) and relative humidity as 50 10 percent. 4.3 Qualification inspectio
46、n. The qualification inspection shall consist of all tests specified in 4.6 and table IV. 4.4 Conformance inspection. 4.4.1 Tests. The conformance inspection shall be performed on each production batch. Conformance inspection consists of all the tests specified in table IV, except toxicity (3.3), co
47、mposition (3.4), storage stability (3.5.2), freeze-thaw stability (3.5.4), infrared reflectance (3.7.4), weather resistance (3.8.2), humidity resistance (3.8.3), cleanability (3.9.3), and strippability (3.9.4) (see 6.9). 4.4.1.1 Visual inspection of filled containers. Samples shall be selected at ra
48、ndom from each lot (see 6.8) in accordance with ANSI/ASQ Z1.4, inspection level S-2. The lot size for this examination shall be the number of kits fully prepared for delivery. The samples shall be examined for container fill, weight, and marking. 4.5 Test panels. All test panels shall be prepared un
49、der laboratory conditions (see 4.2). The dimensions for all test panels shall be approximately 0.020 by 3.0 by 6.0 in. (0.5 by 76.2 by 152.4 mm). With the exception of the panels used for flexibility testing, test panels shall be Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-85285E 13 aluminum alloy 2024 (T
