1、MIL-R-L703A 0 7977706 OLL0583 2 W y (y- 134 bJIL-R:81903A(AS) 22 December 1977 SWERSEDiivti 26 May 1972 MIL-R-81903 (AS) MTLITARY SPECIFICATION RF,MOVER, ACID ACTIVATED, FOR AMINE-CURED EPOXY COATING SYSTEMS This specification is approved for use by the Naval Air Systems Command, Department of the N
2、avy, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the requirements for removers used on amine-cured epoxy coating systems(see 6.1). 1.2 Classification. Coating removers covered by this specification shall be of t
3、he following types as specified (see 6.2). Type I - Hydroxyacetic acid Type II - Formic acid 2. APPLICABLE DOCUMENTS 2.1 Issues of documents. The following documents, of the issue in effect on date of invitation for bids or request for proposal, form a part of this specification to the extent specif
4、ied herein. SPECIFICATIONS FEDERAL QQ-A-25014 - Aluminum Alloy 2024, Plate and Sheet QQ- A- 25 O / 5 - Aluminum Alloy Alclad 2024, Plate and Sheet data which may be of use in improving this document should be addressed to: Engineering Specifications and Standards Department (Code 93, Naval Air Engi-
5、 neering Center, Lakehurst, NJ 08733, by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this FSC THIS DOCUMENT CONTAINS / 5 PAGES. i Licensed by Information Handling ServicesMIL-R-81903 (AS) FEDERAL (continued) QQ-A-250/13 QQ-i-416 TT-T-
6、 291 PPP-P-704 M I L I TARY MIL-C-5541 MIL-S-7952 MI L -A- 86 25 MIL-T-9046 MIL-P-23377 MIL-C-81773 STANDARDS FEDERAL FED-STD-141 FED-STD-313 MIL ITARY MIL-STD-105 MIL-STD-129 SUPP from - Aluminum Alloy Alclad 7075, Plate and Sheet - Plating, Cadmium (Electroplated) - Thinner; Paint, Volatile Spirit
7、s (Petroleum Spirits) - Pai1,Metal: (Shipping, Stee1,l through 12 gallons) - Chemical Films and Chemical Film Materials - Steel, Sheet and Strip, Uncoated Carbon (1020 - Anodic Coatinas, for Aluminum and Aluminum for Aluminum and Aluminum Alloys and 1025) (Aircraft Qual i ty) Y- Al 1 oys P1 ate Solv
8、ent Resistant Res i s tant - Titanium and Titanium Al - Primer Coating, Epoxy Po - Coating, Polyurethane, A oy, Sheet, Strip and yamide, Chemical and iphatic, Weather - Paint, Varnish, Lacquer and Related Materials, Methods of Inspection, Sampling and Testing - Material Safety Data Sheet, Preparatio
9、n and Submission of - Sampling Procedures and Tables for Inspection by Attributes - Marking for Shipment and Storage (Copies of specifications, standards, and publications required by the procuring activity or as directed by the- contracting officer.) 1 iers in connection with specific procurement f
10、unctions, should be obtained Licensed by Information Handling Services2.2 Other pub1 ications. The following documents form a part Unless otherwise of this specification to the extent specified herein. indicated, the issue in effect on date of invitation for bids or request for proposal shall apply.
11、 NATIONAL MOTOR FREIGHT TRAFFIC ASSOCIATION, INC., AGENT National Motor Frei ght Classification (Application for copies should be addressed to the National Motor Freight Traffic, Tariff Department, 1616 P Street, N. W., Washington, DC 20036. ) UNIFORM CLASSIFICATION COMMITTEE, AGENT Uni form Freight
12、 C1 ass if ication Ru1 es (Application for copies should be addressed to the Uniform Classification Committee, Room 1106, 222 South Riverside Plaza, Chicago, IL 60606.) DEPARTMENT OF TRANSPORTATION 49 CFR 100-199 - Department of Transportation (DOT) Regulations for the Transportation of Explosive an
13、d Other Dangerous Articles by Land and Water (Application for copies should be addressed to the Superintendent of Documents, Government Printing Office, Washington, DC 20402. Orders for the publications should cite “The latest issue and supplements thereto“. ) 3. REQUIREMENTS 3.1 Qualification. The
14、coating remover furnished under this specification shall be products which are qualified for listing on the appli- cable qualified products list at the time set for opening of bids (see 4.3 and 6.3). In addition, the retention of the coating remover on the applicable qualified products list shall be
15、 dependent on periodic verification of con- tinued compliance with the requirements of this specification (see 4.3.1). 3.2 Material. The remover covered by this specification shall con- sist of organic solvents, evaporation retarders, and other ingredients needed to impart properties which conform t
16、o the requirements specified herein. The acid active ingredient of type I shall be hydroxyacetic acid, and the acid active ingredient of type II shall be formic acid. with the manufacturer, except that it shall be restricted by other requirements specified herein. 3.2.1 Composition. The formulation
17、of the remover shall be optional 3 Licensed by Information Handling Services3.2.2 Toxicity. The material shall have no adverse effect on the health of personnel when used for its intended purpose in accordance with the directions specified herein. The remover shall contain no components which produc
18、e noxious vapors in such concentrations as to be an annoyance to per- sonnel uring coating removal operations under conditions of adequate ventila- tion while exercising caution to avoid prolonged contact with the skin and while observing Occupational Safety and Health Administration (OSHA) guidelil
19、les. Questions pertaining to the toxic effect shall be referred by the procuring activity to the appropriate departmental medical service who will act as an advisor to the procuring activity (see 6.5). 3.3 remover s ha 1 1 3.4 4.5.2, it chal the flame. 3.5 Consistency and flow. low to a point within
20、 18 and 23 cms in five minutes. Flammability. When the remover is tested as specified in not continue to burn longer than 3 seconds after removal of When tested as specified in 4.5.1, the Effect on metals. When the remover is tested as specified in Slight discoloration of cadmium plated steel 4.5.3
21、on the metals listed in table I (see 4.5.3.1), there shall be no discolor- ation or evidence of corrosion. panels shall not be considered objectionable. 3.6 Rinsability. The remover, when tested as specified in 4.5.4, shall be rinsable with water. If residue or noticeable water break occurs it shall
22、 not adversely affect the drying or adhesion of an applied polyurethane system. ied in 4.5.5. shall remove epoxy finish from all panels specified in table II (see 4.5.5.1) better than the control formula product (see 4.5.5.2). 3.7 Paint stripping efficiency. The remover, when tested as specif- 3.8 R
23、efinishing properties of stripped surfaces. After the stripping operation specified in 4.5.5 has been completed, the remover shall leave a surface suitable for refinishing as described in 4.5.6. volatility of distilled water when distilled water and the remover are tested as specified in 4.5.7. 3.9
24、Volatility. The volatility of the remover shall not exceed the 3.10 Storage stability. The remover shall conform to all require- ments of this specification after 6 months storage at 21.15 2.8“C (70 55F). 3.11 Service test. When required by the qualifying activity, the remover shall be tested as spe
25、cified in 4.5.9 and shall show satisfactory performance in actual use. erature, shall be a homogeneous liquid that shows no caking, or gelation. 3.12 Workmanship. The remover, when examined visually at room temp- 4 Licensed by Information Handling ServicesMIL-R-81703A 80 7977706 0110587 T MIL -R-819
26、03A (AS) 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract, the contractor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract, the contractor may use his own
27、or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government. reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services
28、conform to prescribed requirements. specified herein are classified as follows: The Government 4.2 Classification of inspections. Inspection requirements 1. Qualification inspection (see 4.3). 2. Quality conformance inspection (see 4.4). 4.2.1 Inspection conditions, Unless otherwise specified, all i
29、nspections required by this specification shall be performed at a temperature of 21.1 - +2.8“C (70+5“F) - and relative humidity of 50 - +5 percent. 4.3 shall consist of all the examinations and tests required under this specification. Qual if i cation inspection . The qual if icati on inspection 4.3
30、.1 Retention of qualification. The retention of qualification of products approved for listing on the qualified products list (QPL) shall be accomplished by a periodic verification to determine continued compliance of a suppliers product with the requirements of this specification. The verification
31、intervals shall not exceed two years. Unless otherwise specified by the activity responsible for the qualified products list, verification of qualification may be made by certification. shall consist of two gallons of remover contained in two one-gallon glass containers. Samples shall be forwarded t
32、o the Supply Officer, Naval Air Development Center, Warminster, Pennsylvania 18974, Attention: Director, Aircraft and Crew Systems Technology Directorake, Code 60622. Samples shall. be plainly identified by securely attached durable tags with the following information: 4.3.2 Qualification samples. Q
33、ualification inspection samples Sample for qualification inspection Remover, Acid Activated for Amine-Cured Epoxy Coating Systems Manufacturers formula No. Date compounded Manufacturers name Batch or lot number Submitted by (name) (date) for qualification inspection in accordance with the require- m
34、ents of speciifcation MIL-R-1903A(AS) under authorization of (reference authorizing letter) = 5 Licensed by Information Handling Services4.3.2.1 Service test samples. Service test samples shall consist of 150 gallons of paint remover contained in thirty (5 gallon) steel pails conforming to PPP-P-704
35、., Type I, Class 4. required, Samples shall be forwarded in accordance with instructions contained in the authorizing letter granting service test which will be sent to the manufacturer on satisfactory completion of all laboratory tests . No overpacking is 4.3.2.2 Inspection report and other data. T
36、he contractor shall submit a report, in duplicate, to accompany the qualification inspection sample. This report shall include the results of the manufacturers tests, reported quantitatively, where applicable, in the units specified for all of the requirements specified herein. Tests not conducted d
37、ue to lack of special test facilities or materials shall be so noted in the report, The contractor shall also furnish toxicological data necessary to evaluate the safety of the cleaning compound for the proposed use, and a certified statement specifically identifying each ingredient in the compound
38、by a readi 1 y recogni zabl e chemical name , source , and percentage by weight. Trade names alone will not be considered satisfactory. The formulation shall be clearly identified by the manufacturers formula number. 4.3.3 Qualification tests. The qualification tests of the remover shall consist of
39、all the tests required under this specification. 4.4. Qual i ty conformance inspection. The qual i ty conformance inspection of the remover shall consist of the following tests: Cons i s tency F1 amma bi 1 i ty Effect on metals Paint stri ppi ng efficiency Vol a ti 1 i ty Rinsability 4.4.1 Lot forma
40、tion. A lot shall consist of all the coating remover produced by one manufacturer, at one plant, from the same materials, and under essentially the same conditions provided the operation is continuous. In the event the process is a batch operation, each batch shall constitute a lot (see 6.4). 4.4.2
41、test samples shall be selected in accordance with Fed. Test Method Std. No. 141, except that the sample shall consist of at least one gallon of remover. The applicable test methods of Fed. Test Method Std. No. 141 shall be used throughout this specification where test methods of Fed. Test Method Std
42、. No. 141 are specified. Each sample shall be clearly identified by the manufacturers formula number as specified in 4.3.2. The test samples shall be forwarded to the Naval Air Development Center as specified in 4.3.2. Qual i ty conformance test samples. Qual i ty conformance The manufacturer 6 Lice
43、nsed by Information Handling ServicesMIL-R- 8 19 O 3A (AS ) shall furnish with each lot a certificate to the effect that the material has been processed in the same manner and degree using the same base ingredients as the approved qualification sample. 4.4.3 Packaging inspection. A random sample of
44、filled containers shall be selected from each lot and inspected for fill, packing and marking. The sampling shall be in accordance with MIL-STD-105, Inspection Level I and Acceptable Quality Level (AQL) 2.5 percent defective. The packing shall be in accordance with PPP-P-704 and the marking shall co
45、nform to the requirements of MIL-STD-129. 4.5 Test methods. 4.5.1 Consistency and flow. The consistency and flow of the re- .mover shall be determined with a Consistometer (Central Scientific Company Catalog No. 24925) or equivalent type instrument. 4.5.2 Flammability. 4-5.2.1 Panel preparation. One
46、 end of a clean, 4 by 314 by 0.040 inch aluminum alloy panel, conforming to QQ-A-25014 and anodized in accordance with MIL-A-8625, shall be held at an angle of approximately 45 degrees. The remover shall be poured along the upper edge of the panel, allowing the remover to drain freely over the surfa
47、ce. Remover settling on the reverse side of the panel shall be wiped clean before proceeding with the test. 4.5.2.2 Procedure. A microburner flame, not exceeding 3/16 inch in length shall be passed, within a 2-second period, back and forth along the lower edge of the panel. This operation shall be r
48、epeated three times at 3- second intervals. If the remover ignites, the burner flame shall be removed and observation shall be made to ascertain whether the remover continues to burn. panel except that the panel shall be placed in an oven for 15 minutes at 45 +2.2C (113 +4F). jected to the fiame tes
49、t. The above procedure shall be repeated on another similarly prepared The panel shall then be removed from the oven and sub- 4.5.3 Effect on metals. 4.5.3.1 Preparation of test panels. Test panels, 1 by 6 inches, shall be made in accordance with Table I. line 1-114 inches from one end to form an angle of 45 degrees. shall then be cleaned in a beaker of hot petroleum spirits conforming to type I, grade A of TT-T-291 by using a surgical gauze swab. The panels shall then be rinsed in hot petroleum spirits, boiled in 95 percent methanol, and finally boiled in absolute methanol.
