1、 PERFORMANCE SPECIFICATION PRIMER COATINGS: EPOXY, HIGH-SOLIDS 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 corrosion inhibiting, chemical and solvent resistant, solvent-borne,
2、high-solids epoxy primer coatings that have a maximum volatile organic compound (VOC) content of 340 grams per liter (g/L)(2.8 pounds per gallon lb/gal) as supplied by the manufacturer. 1.2 Classification. The primer coatings are of the following types and classes, as specified (see 6.2): 1.2.1 Type
3、s. The types of primer coatings are as follows: Type I - Standard pigments Type II - Low infrared reflective pigments 1.2.2 Classes. The classes of primer coatings are as follows: Class C1 - Barium chromate based corrosion inhibitors Class C2 - Strontium chromate based corrosion inhibitors Class N -
4、 Non-chromate based corrosion inhibitors AMSC N/A FSC 8010 MIL-PRF-23377K 7 June 2012 SUPERSEDING MIL-PRF-23377J W/AMENDMENT 2 10 April 2007 Comments, suggestions, or questions on this document should be addressed to: Commander, Naval Air Warfare Center Aircraft Division, Code 4L8000B120-3, Highway
5、547, Lakehurst, NJ 08733-5100 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.dla.mil. NOT MEASUREMENT SENSITIVEProvided by IHSNot for ResaleNo reproduction o
6、r networking permitted without license from IHS-,-,-MIL-PRF-23377K 2 1.3 Part or Identifying Number (PIN). The PINs to be used for primer coatings acquired to this specification are created as follows: M23377 - X - XX - XXXX Specification identifier Type designator 1 = Type I 2 = Type II Class desig
7、nator (C1, C2 or N) Kit size designator (see 1.3.1) 1.3.1 Kit size. The primer coatings covered by this specification should be purchased by volume, 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,
8、 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-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/ Desi
9、gnators for less than pint size kits (small touch-up kits) should be expressed in cubic centimeters (cc) and should be designated by “C.” Example: A type I, class C2, 50 cc kit should be designated M23377-1-C2-050C. 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specif
10、ied in sections 3 and 4 of this specification. This section does not include documents cited in other sections of this specification 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 t
11、hey must meet all specified requirements of documents cited in sections 3 and 4 of this specification, whether or not they are listed. 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.
12、 Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-23377K 3 FEDERAL SPECIFICATION TT-R-2918 - Remover, Paint, No Hazardous Air Pollutants
13、 (HAPs). FEDERAL STANDARD FED-STD-595 - Colors Used in Government Procurement/ Color numbers 17925, 36375. DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-DTL-5541 - Chemical Conversion Coatings on Aluminum and Aluminum Alloys. MIL-C-8514 - Coating Compound, Metal Pretreatment, Resin-Acid. MIL-A-8625 - Ano
14、dic Coatings for Aluminum and Aluminum Alloys. MIL-PRF-23699 - Lubricating Oil, Aircraft Turbine Engine, Synthetic Base, NATO Code Number 0-156. MIL-R-81294 - Remover, Paint, Epoxy, Polysulfide, and Polyurethane Systems. MIL-T-81772 - Thinner, Aircraft Coating. MIL-PRF-83282 - Hydraulic Fluid, Fire
15、Resistant, Synthetic Hydrocarbon Base, Metric, NATO Code Number H-537. MIL-PRF-85285 - Coating: Polyurethane, Aircraft and Support Equipment. (Copies of these documents are available on line at https:/assist.dla.mil/quicksearch/ or https:/assist.dla.mil or from the Standardization Document Order Des
16、k, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.3 Non-Government publications. The following documents 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. ASTM INTE
17、RNATIONAL ASTM B117 - Standard Practice for Operating Salt Spray (Fog) Apparatus ASTM D823 - Standard Practices for Producing Films of Uniform Thickness of Paint, Varnish, and Related Products on Test Panels ASTM D1200 - Standard Test Method for Viscosity by Ford Viscosity Cup ASTM D1210 - Standard
18、Test Method for Fineness of Dispersion of Pigment-Vehicle Systems by Hegman-Type Gage ASTM D1296 - Standard Test Method for Odor of Volatile Solvents and Diluents ASTM D1649 - Standard Specification for Strontium Chromate Pigment. ASTM D1849 - Standard Test Method for Package Stability of Paint Prov
19、ided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-23377K 4 ASTM D2803 - Standard Guide for Testing of Filiform Corrosion Resistance of Organic Coatings on Metal ASTM D3335 - Standard Test Method for Low Concentrations of Lead, Cadmium, and Cobalt i
20、n Paint by Atomic Absorption Spectroscopy ASTM D3359 - Standard Test Method for Measuring Adhesion by Tape Test ASTM D3718 - Standard Test Method for Low Concentrations of Chromium in Paint by Atomic Absorption Spectroscopy ASTM D3924 - Standard Specification for Standard Environment for Conditionin
21、g and Testing Paint, Varnish, Lacquer, and Related Materials ASTM D3960 - Standard Practice for Determining Volatile Organic Compound (VOC) Content of Paints and Related Coatings. ASTM D5402 - Standard Practice for Assessing the Solvent Resistance of Organic Coatings Using Solvent Rubs ASTM D5895 -
22、Standard Test Method for Evaluating Drying and Curing During Film Formation of Organic Coatings Using Mechanical Recorders ASTM D6905 - Standard Test Method for Impact Flexibility of Organic Coatings (Copies of these documents are available from www.astm.org or ASTM International, 100 Barr Harbor Dr
23、ive, West Conshohocken, PA 19428-2959.) AMERICAN SOCIETY FOR QUALITY (ASQ) ANSI/ASQ Z1.4 - Sampling Procedures And Tables For Inspection By Attributes (Copies of this document are available from www.asq.org or American Society for Quality, 600 Plankinton Avenue, Milwaukee, WI 53203.) Provided by IHS
24、Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-23377K 5 SAE INTERNATIONAL SAE-AMS1640 - Compound, Corrosion Removing for Aircraft Surfaces SAE-AMS-QQ-A-250/4 - Aluminum Alloy 2024, Plate and Sheet UNS A92024. SAE-AMS-QQ-A-250/5 - Aluminum Alloy Alclad 2024
25、, Plate and Sheet UNS A82024. (Copies of these documents are available from www.sae.org or SAE World Headquarters, 400 Commonwealth Drive, Warrendale, PA 15096-0001.) 2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this docume
26、nt and the references cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 Qualification. The primer coatings furnished under this specification shall
27、 be products that are authorized by the qualifying activity for listing on the applicable qualified products list in the qualified products database (QPD) before contract award (see 4.2 and 6.3). The material supplied under contract shall be identical, within manufacturing tolerances, to the product
28、 receiving qualification. 3.2 Material. Materials used in the manufacture of the primer coatings supplied under this specification shall be products conforming to the requirements of this specification. 3.3 Toxicity. The primer coatings shall have no adverse effect on the health of personnel when us
29、ed for its intended purpose and with the precautions listed in 3.11, when evaluated in accordance with 4.5.12 (see 6.8). 3.4 Composition. The primer coatings shall consist of two or three components, as follows: Component A - a base component composed of epoxy resin and solvents. Component B - a cur
30、ing agent containing polyamide or amine resin and solvents. Component C (optional) - thinning component composed predominately of organic solvents. Component B shall act as the curing agent for component A. The components shall be packaged separately and furnished as a kit (see 1.3.1). Pigments may
31、be included with either component A or B. When the components are mixed in the proportions specified by the manufacturer, a primer coating meeting the requirements of this specification shall result. Chlorinated solvents, except for para-chlorotrifluoromethylbenzene or equal, shall be prohibited in
32、the formulation of these primer coatings. Incidental cadmium and cadmium compounds shall be not greater than one part per million (ppm). The non-volatile portion shall contain not more than 0.05 percent by weight of lead metal or lead compounds. Provided by IHSNot for ResaleNo reproduction or networ
33、king permitted without license from IHS-,-,-MIL-PRF-23377K 6 3.4.1 Pigment. 3.4.1.1 Class C1. Primer coatings containing barium chromate based corrosion inhibitors, along with extenders and other pigments, shall be identified as class C1. 3.4.1.2 Class C2. Primer coatings containing strontium chroma
34、te conforming to ASTM D1649 as the corrosion inhibitor, along with extenders and other pigments, shall be identified as class C2. 3.4.1.3 Class N. Primer coatings containing non-chromium corrosion inhibitors, along with extenders and other pigments, shall be identified as class N. Incidental hexaval
35、ent chromium content of class N primer coatings shall be not greater than 5 ppm (see 4.5). 3.4.2 Volatile organic compound (VOC) content. The VOC content of admixed primer coatings shall be not greater than 340 g/L (2.8 lb/gal). The resistivity of the solvents shall permit application of the coating
36、s by electrostatic spray application (see 4.5). 3.4.2.1 Thinner compatibility. The admixed primer coatings shall be compatible with thinner conforming to MIL-T-81772, type II (see 6.11). 3.5 Physical properties components before mixing. 3.5.1 Fineness of grind. The fineness of grind of the pigmented
37、 component shall be 5 or greater on the Hegman scale (see 4.5). 3.5.2 Condition in container. Components A, B, and C (if applicable) shall be free of grit, seeds, lumps, abnormal thickening or livering, and shall not show pigment flotation nor excessive settling. They shall mix to a smooth, homogene
38、ous, and pourable condition. In addition, the containers shall exhibit no deformation (see 4.5.1). 3.5.3 Storage stability. The unopened coating components, as packaged by the manufacturer, shall meet all requirements of this specification after storage for a period of one year for metal containers
39、and six months for plastic containers. The conditions for the storage shall be a daily ambient air temperature that is maintained at 1.7 to 46 C (35 to 115 F) (see 4.5 and 6.3.1). 3.5.4 Accelerated storage stability. The primer coating, as packaged by the manufacturer, shall meet all requirements of
40、 this specification after storage for 14 days and admixing (see 4.5.2). The container shall not become deformed or the lid shall not become unsealed during the storage period. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-23377K 7 3.6 Physi
41、cal properties - admixed components. 3.6.1 Color. 3.6.1.1 Type I. The color of the admixed type I primer coatings shall be the natural color of the corrosion inhibiting pigments used. Tinting to a different shade is permitted. 3.6.1.2 Type II. The color of the admixed type II primer coatings shall b
42、e dark green, black, or gray. 3.6.2 Odor. The odor of the admixed coatings, wet or dry, shall be characteristic of the solvents used (see 4.5). 3.6.3 Viscosity. Immediately after mixing components A and B, the maximum viscosity of the unthinned, admixed primer coatings shall be 40 seconds through a
43、#4 Ford cup (see 4.5). 3.6.4 Pot life. After mixing and storage at room temperature in a closed container (see 4.5) for 4 hours, the maximum viscosity of the unthinned primer coatings (see 3.6.3) shall be 70 seconds through a #4 Ford cup (see 4.5). 3.7 Physical properties - film. 3.7.1 Surface appea
44、rance. The admixed primer coatings, applied to a vertical surface, shall not sag, run, or streak. The dried film shall have a smooth, uniform surface free of grit, seeds, craters, blisters, and other irregularities (see 4.4.1). No orange peel (wavy appearance) shall be evident when viewed from six f
45、eet away. 3.7.2 Drying time. The admixed primer coatings shall be tack free within 5 hours and shall dry hard within 8 hours (see table II). 3.7.3 Lifting. There shall be no evidence of lifting or any other film irregularity after topcoating the admixed primer coatings that have air dried for 5 hour
46、s (see 4.5.3). 3.7.4 Adhesion. There shall be no peeling or delamination between the primer and topcoat or at the primer and substrate interface. The coatings shall have a rating of no less than a 4A when examined in accordance with ASTM D3359 (see 4.5.4). 3.7.5 Flexibility. The primer coatings shal
47、l exhibit an elongation of not less than 10 percent when tested in accordance with 4.5.5. 3.7.6 Infrared reflectance (type II primer coatings only). The total reflectance (specular and diffuse) of the type II primer coatings, relative to barium sulfate, shall be not greater than ten percent througho
48、ut the range of 700 to 2,600 nanometers (nm) (see 4.5.6). 3.8 Resistance properties. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-23377K 8 3.8.1 Water resistance. The topcoated primer coatings shall withstand immersion in distilled water m
49、aintained at 49 3 C (120 5 F) for 4 days without exhibiting any evidence of wrinkling, blistering, or any other coating deficiency (see 4.5.7). 3.8.2 Corrosion resistance. 3.8.2.1 Salt spray. The primer coatings, with and without a topcoat, shall not exhibit blistering, lifting of either coating, nor substrate pitting after exposure to a 5 percent sa
