1、 MIL-DTL-53084B 23 February 2011 SUPERSEDING MIL-DTL-0053084A (MR) 3 August 2006 MIL-P-53084 (ME) 20 July 1988 DETAIL SPECIFICATION PRIMER, CATHODIC ELECTRODEPOSITION, CHEMICAL AGENT RESISTANT This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCO
2、PE 1.1 Scope. This specification covers waterborne, cathodic epoxy electrodeposition primer formulated free of lead, hexavalent chromium and hazardous air pollutants (HAPs). The primer meets solvent emission maximums of 144 grams/liter (g/l) (1.2 pounds/gallon (lbs/gal) volatile organic compound (VO
3、C) content and is compatible with Chemical Agent Resistant Coating (CARC) topcoats. This primer is intended for use on properly cleaned and pretreated ferrous and nonferrous metal surfaces. 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3, 4, or 5
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 they must meet all speci
5、fied requirements of documents cited in sections 3, 4, or 5 of this specification, whether or not they are listed. AMSC N/A FSC 8010 INCH-POUND Comments, suggestions, or questions on this document should be addressed to: Director, U.S. Army Research Laboratory, Weapons and Materials Research Directo
6、rate, Materials Manufacturing Technology Branch, Specifications and Standards Office, ATTN: RDRL-WMM-D, Aberdeen Proving Ground, MD 21005-5069 or emailed to rsquillaarl.army.mil. Since contact information can change, you may want to verify the currency of this address information using the ASSIST On
7、line database at https:/assist.daps.dla.mil/. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-53084B 2 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a par
8、t of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract. FEDERAL SPECIFICATIONS TT-C-490 - Chemical Conversion Coatings And Pretreatments for Ferrous Surfaces (Base for Organic Coatings). FEDERAL STA
9、NDARDS FED-STD-313 - Material Safety Data, Transportation Data and Disposal Data for Hazardous Materials Furnished to Government Activities. FED-STD-595 - Colors Used in Government Procurement. FED-STD-595/26270 - Gray, Semigloss (Haze). FED-STD-595/26373 - Gray, Semigloss (Light). FED-STD-595/26493
10、 - Gray, Semigloss (Pearl). FED-STD-595/37030 - Miscellaneous, Flat or Lusterless (Black). DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-DTL-5541 - Chemical Conversion Coatings on Aluminum and Aluminum Alloys. MIL-DTL-12468 - Decontaminating Agent, STB. MIL-DTL-53039 - Coating, Aliphatic Polyurethane, Si
11、ngle Component, Chemical Agent Resistant. MIL-DTL-64159 - Camouflage Coating, Water Dispersible Aliphatic Polyurethane, Chemical Agent Resistant. (Copies of these documents are available online at https:/assist.daps.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Av
12、enue, 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 a
13、re those cited in the solicitation or contract. UNITED STATES ENVIRONMENTAL PROTECTION AGENCY (EPA) The Clean Air Act Amendments of 1990 List of Hazardous Air Pollutants (Copies of this document are available online at http:/www.epa.gov/ttn/atw/orig189.html or from the Environmental Protection Agenc
14、y, Ariel Rios Building, 1200 Pennsylvania Avenue, N.W., Washington, DC 20460.) 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 contra
15、ct. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-53084B 3 ASTM INTERNATIONAL ASTM A109/ - Standard Specification for Steel, Strip, Carbon (0.25 A109M Maximum Percent), Cold-Rolled. (DoD adopted) ASTM A1008/ - Standard Specification for Ste
16、el, Sheet, Cold-Rolled, A1008M Carbon, Structural, High-Strength Low-Alloy, High- Strength Low-Alloy with Improved Formability, Solution Hardened, and Bake Hardenable. (DoD adopted) ASTM B117 - Standard Practice for Operating Salt Spray (Fog) Apparatus. (DoD adopted) ASTM D522 - Standard Test Method
17、s for Mandrel Bend Test of Attached Organic Coatings. (DoD adopted) ASTM D523 - Standard Test Method for Specular Gloss. (DoD adopted) ASTM D610 - Standard Practice for Evaluating Degree of Rusting on Painted Steel Surfaces. (DoD adopted) ASTM D1153 - Standard Specification for Methyl Isobutyl Keton
18、e. (DoD adopted) ASTM D1394 - Standard Test Methods for Chemical Analysis of White Titanium Pigments. (DoD adopted) ASTM D1475 - Standard Test Method for Density of Liquid Coatings, Inks, and Related Products. (DoD adopted) ASTM D2196 - Standard Test Methods for Rheological Properties of Non-Newtoni
19、an Materials by Rotational (Brookfield type) Viscometer. (DoD adopted) ASTM D2369 - Standard Test Method for Volatile Content of Coatings. (DoD adopted) ASTM D3335 - Standard Test Method for Low Concentrations of Lead, Cadmium, and Cobalt in Paint by Atomic Absorption Spectroscopy. (DoD adopted) AST
20、M D3359 - Standard Test Methods for Measuring Adhesion by Tape Test. ASTM D3363 - Standard Test Method for Film Hardness by Pencil Test. (DoD adopted) ASTM D3924 - Standard Specification for Standard Environment for Conditioning and Testing Paint, Varnish, Lacquer and Related Materials. (DoD adopted
21、) ASTM D3960 - Standard Practice for Determining Volatile Organic Compound (VOC) Content of Paints and Related Coatings. (DoD adopted) ASTM D4214 - Standard Test Methods for Evaluating the Degree of Chalking of Exterior Paint Films. (DoD adopted) ASTM D4399 - Standard Test Method for Measuring Elect
22、rical Conductivity of Electrocoat Baths. ASTM G90 - Standard Practice for Performing Accelerated Outdoor Weathering of Nonmetallic Materials Using Concentrated Natural Sunlight. (Copies of these documents are available from www.astm.org or ASTM International, 100 Barr Harbor Drive, PO Box C700, West
23、 Conshohocken, PA 19428-2959.) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-53084B 4 2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between the text of this document and the references
24、 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 furnished under this specification shall be a product that is authoriz
25、ed by the qualifying activity for listing on the applicable Qualified Products Database (QPD) before contract award (see 4.2 and 6.3). Any change in the formulation of a qualified product shall necessitate its requalification. The material supplied under contract shall be identical, within manufactu
26、ring tolerances, to the products receiving qualification. 3.2 Materials. The materials used in the primer shall be as specified herein. Materials not specified shall be selected by the contractor and shall be subject to all provisions of this specification. 3.3 Color and 60 gloss. For qualification
27、purposes, the primer shall be a gray visual color match to chip number 26493 of FED-STD-595, or at the most no darker than chip number 26373. Qualification is also acceptable for black, color chip number 37030. For actual production, the color may darken to chip number 26270. When black primer is ap
28、plied, the CARC topcoats conforming to MIL-DTL-53039 or MIL-DTL-64159 shall be applied at a minimum dry film thickness of 2.0 mils (50 microns) to ensure the infrared reflectance (IR) signature requirements of the topcoats are met. The 60gloss range shall be 30 - 85. 3.4 Composition. Cathodic electr
29、ocoat primer can be supplied in a single container as premixed resin and pigment paste, or in two separate containers, one for the resin and another for the pigment paste. The composition for the primer shall be as follows. 3.4.1 Resin feed component. The resin feed component shall consist of an epo
30、xy-based or an epoxy-urethane resin combined with the necessary amounts of flow control agents and volatile solvents. The use of acrylic resins as flow control agents is restricted to less than 2.0 percent by weight. When tested as specified in 4.8, the resin feed component shall meet the quantitati
31、ve requirements of table I. 3.4.2 Pigment paste component. The pigment paste shall consist of an epoxy-based resin, volatile solvents, titanium dioxide (TiO2) and/or carbon black pigments, and siliceous extenders. The use of small amounts of tinting pigments is permissible to achieve the color as sp
32、ecified in 3.3. Hexavalent chromate, zinc chromate, or lead pigments shall not be used alone or as a component part of any pigment. Compounds of antimony, arsenic, beryllium, cadmium, chromium, cobalt, cyanide, lead, manganese, mercury, nickel and selenium shall be absent. When tested as in section
33、4, the pigment paste component shall meet the quantitative requirements of table I. 3.4.3 Single container (one component) feed. The one component feed shall consist of the resin feed component specified in 3.4.1 and the pigment paste component specified in 3.4.2 blended together. When tested as in
34、section 4, the single container feed shall meet the quantitative requirements of table II. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-53084B 5 TABLE I. Component breakdown (two component systems). Characteristic Resin Feed Gray Pigment P
35、aste Black Pigment Paste Total solids, percent by weight 38.0 5.0 53.0 2.0 40 - 55 Weight, lbs/gal 8.8 0.2 11.6 - 13.5 8.5 - 12.0 pH range 5.5 - 7.0 6.7 - 8.0 6.7 - 8.0 Viscosity, centipoise (cP) 250 cP (max) 5000 cP (max) 5000 cP (max) TiO2, percent by weight of pigment - 50 (min) N/A Hexavalent ch
36、romium - Negative Negative Epoxy-based resin Positive - - TERMS: 1 centipoise (cP) = 0.01 poise (P). TABLE II. Component breakdown (one component systems). Characteristic Cationic Feed (CF) Total solids, percent by weight 34 - 46 Weight, lbs/gal 9.0 0.5 Viscosity, centipoise (cP) 100 - 2500 cP Hexav
37、alent chromium Negative Epoxy resin Positive TERMS: 1 centipoise (cP) = 0.01 poise (P). 3.5 Mixed primer requirements. The mixed primer shall conform to the quantitative requirements of table III for a two component system when tested as in section 4. The mixed primer shall conform to the quantitati
38、ve requirements of table IV for a one component system when tested as in section 4. TABLE III. Mixed primer quantitative requirements (two component systems). Characteristic Requirement (Gray) Requirement (Black) Total solids, percent by weight 10.0 - 20.0 10 - 23 Pigment to binder ratio 0.10 - 0.35
39、 0.08 - 0.25 pH range 5.6 - 6.3 5.0 - 6.5 Conductivity, micromhos 1000 - 2000 850 - 2300 VOC content, g/l (lbs/gal) 144 (1.2) (max) 144 (1.2) (max) Lead content, percent by weight of total solids 0.06 (max) 0.06 (max) 3.6 Applied primer qualitative requirements. 3.6.1 Condition in container. When te
40、sted as specified in 4.9.1, the resin feed component and pigment paste component shall be free from grit, seeds, abnormal thickening or livering in a freshly opened container. The pigment paste component shall show no more pigment settling or caking than can be easily and completely reincorporated t
41、o a smooth homogeneous state. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-53084B 6 TABLE IV. Mixed primer quantitative requirements (one component systems). Characteristic Requirement Total solids, percent by weight 10 - 23 pH range 4.8 -
42、 6.5 Conductivity, micromhos 850 - 2300 VOC content, g/l (lbs/gal) 144 (1.2) (max) Lead content, percent by weight of total solids 0.06 (max) 3.6.2 Mixing properties. When mixed as specified in 4.9.2, a smooth homogeneous mixture shall result. 3.6.3 Electrocoating application properties. When applie
43、d as specified in 4.9.3, the primer shall electrocoat satisfactorily and shall show a continuous film after baking which conforms to the color, gloss and performance properties as specified in section 4. The baked film shall show no mottling or color separation and shall present a finish free from c
44、raters or orange peel. 3.6.4 Cure time. When tested as specified in 4.9.4, the tested area shall show no film softening when compared to an untested portion of the panel. 3.6.5 Adhesion. When tested as specified in 4.9.5, the film of the primer shall show no removal from the surface of the cross-cut
45、 area, classification 5B in accordance with ASTM D3359. The film of the primer and the topcoat shall show less than 5 percent of the area affected as described as classification 4B in accordance with ASTM D3359. 3.6.6 Flexibility. A film of the primer tested as specified in 4.9.6 shall withstand ben
46、ding without cracking or flaking. 3.6.7 Salt spray resistance. When tested as specified in 4.9.7, the panels shall be examined immediately after removal from the salt spray cabinet. Rinse the panels and examine for rusting. There shall be no more than a trace of rusting (see ASTM D610, table I, rust
47、 grade 8) and no blisters larger than 0.039 inches (1 mm) in diameter on the entire 10 inch (254 mm) coated surface. The cross-scribed area shall not exceed one-eighth of an inch score rust creeping on either side of the scribe line or loss of adhesion. The panels tested for cross hatch adhesion pro
48、perties shall satisfy classification 3B of ASTM D3359. Upon removal of the primer, the substrate shall show no more than a trace of rusting, pitting, or corrosion. 3.6.8 Super tropical bleach (STB) resistance. When tested as specified in 4.9.8, a film of the coating shall show no blistering, wrinkli
49、ng, or film softening when examined immediately after washing with water. Film softening shall not exceed a 2 pencil hardness difference (see ASTM D3363) from an unexposed film with identical cure history prior to STB exposure. After drying, there shall be a maximum color change of 2.5 NBS units when comparing a portion of the untested panel to that of the tested area. The STB
