1、INCH-POUND MIL-DTL-82633A (OS) 10 February 2011 SUPERSEDING MIL-C-82633(OS) 27 August 1973DETAIL SPECIFICATION COMPOUND, POLYMERIC ELASTOMER, THERMOSETTING This specification is approved for use by the Naval Sea Systems Command, Department of the Navy, and is available for use by all departments and
2、 agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers a two-part, cured-in-place, polymeric thermosetting compound having elastomeric and thermal properties for sealing or padding the tail portion of the explosive cavities of bombs. Curing takes place at room temperat
3、ure with a minimum of exotherm. 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as
4、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, 4, or 5 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specificati
5、ons, standards, and handbooks. The following specifications, standards, and handbooks 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. INTERNATIONAL STANDARDIZATION AGREEMENTS STANA
6、G 4240 Liquid Fuel/External Fire, Munition Test Procedures (Copies of this document are available from NATO/MAS, Bvd Leopold 111, 1110 Brussels, BE online at https:/assist.daps.dla.mil/quicksearch/ or from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 191
7、11-5094.) Comments, suggestions, or questions on this document should be addressed to DEPARTMENT OF THE NAVY, Indian Head Division, NSWC, E12AP, Document Control, 4123 Artisans Court, Suite 103, Indian Head, MD 20640-5085 OFFICIAL BUSINESS, or emailed to amanda.pennnavy.mil. Since contact informatio
8、n can change, you may want to verify the currency of this information using the ASSIST Online database at https:/assist.daps.dla.mil. AMSC N/A FSC 8030 DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitt
9、ed without license from IHS-,-,-MIL-DTL-82633A (OS) 2 DEPARTMENT OF DEFENSE STANDARDS MIL-STD-1916 DOD Preferred Methods for Acceptance of Product (Copies of this document are available online at https:/assist.daps.dla.mil/quicksearch/ or from the Standardization Documents Order Desk, 700 Robbins Av
10、enue, 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 the documents are those cited in the solicitation or contract. AMERICAN SOCIETY FOR TESTING
11、 AND MATERIALS (ASTM) ASTM D 70 Standard Test Method for Density of Semi-Solid Bituminous Materials (Pycnometer Method) ASTM D 92 Standard Test Method for Flash and Fire Points by Cleveland Open Cup Tester ASTM D 140 Standard Practice for Sampling Bituminous Materials ASTM D 395 Standard Test Method
12、s for Rubber Property- Compression Set ASTM D 1084 Standard Test Methods for Viscosity of Adhesives (Copies of these documents are available online at http:/www.astm.org or from the American Society for Testing and Materials Customer Service, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.)
13、 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 cited herein, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a
14、 specific exemption has been obtained. 3. REQUIREMENTS 3.1 General. 3.1.1 First article. When specified (see 6.2), a sample (see 6.3) shall be subjected to first article inspection in accordance with 4.2. 3.1.2 Material. The two-component material shall polymerize in situ at room temperature when th
15、oroughly blended together in equal parts by weight. The thermosetting compound may contain a hydroxy-modified, polydiene-isocyanate system polymerized by a curing agent with asphalt as a filler material. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-
16、,-MIL-DTL-82633A (OS) 3 3.1.3 Workmanship. The individual components shall contain no volatiles or toluene diisocyanate ingredient and shall be products of high quality, suitable for the purpose intended, and so manufactured as to meet all requirements specified herein. Both components furnished und
17、er this specification shall be uniform in quality and consistency after stirring and free of agglomerates or other contaminants. The cured compound shall be free of low or high density areas and shall present an appearance of smooth homogeneity. 3.1.4 Storage (shelf) life. The cured compound (see 6.
18、4.1) shall meet all requirements of this specification when produced from components that have been stored in unopened original containers no longer than 8 months at ambient temperature. 3.2 Product characteristics. 3.2.1 Physical properties of components. The components shall have the physical prop
19、erties specified in Table I. TABLE I. Component physical properties. Property Component A Component B Test procedure Specific gravity 0.91 0.03 0.96 0.03 4.4.1 Viscosity, cp (at 75 5 F) 7,200 max. 112,000 max. 4.4.2 Flash point, F 500 min. 400 min. 4.4.3 1Not to exceed 25,000 cp after 8 months of st
20、orage. 3.2.2 Exothermic temperature. The peak exothermic temperature of the reacting polymeric compound shall not exceed 100 degrees Fahrenheit (F) when tested in accordance with 4.4.4. 3.2.3 Gel time. The gelation (reaction) time of the reacting components shall be 6 1 minutes when tested in accord
21、ance with 4.4.5. 3.2.4 Slump test. The gelled compound (see 6.4.2) shall not slump beyond the edge of the test container when tested in accordance with 4.4.6. 3.2.5 Alkalinity. The cured compound shall have a pH value of 7.0 or less when tested in accordance with 4.4.7. 3.2.6 Acidity. The cured comp
22、ound shall have less than 0.01 percent acidity when tested in accordance with 4.4.8. 3.2.7 Stability. The cured compound shall show no evidence of oil or other materials leaching out when tested in accordance with 4.4.9. 3.3 Performance requirements. 3.3.1 Resistance to cold temperature. A disc of t
23、he cured compound shall not crack, chip, or show deterioration when tested in accordance with 4.4.10. 3.3.2 Compression set. The cured compound shall have a compression set no greater than 50 percent when conditioned at 160 F and no greater than 2 percent when conditioned at -65 F and tested in acco
24、rdance with 4.4.11. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-82633A (OS) 4 3.3.3 Bomb sealing suitability. The polymeric compound furnished under this specification shall be suitable for use as a sealer in Mk 80 Series explosive loaded
25、 bombs. Suitability shall be determined by incorporating the material into Mk 82 Mod 2, 500 pound (lb), thermally protected bombs (see 6.4.3) in accordance with the loading requirements of the applicable drawings. The number of bombs loaded shall be determined by the procuring activity. The loaded b
26、ombs shall have a cook-off time of 9 minutes or more when subjected to the fast cook-off test of 4.4.12. 4. VERIFICATION 4.1 Classification of inspections. The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.2) b. Conformance inspection (see 4.3
27、). 4.2 First article inspection. The first article inspection shall consist of all tests of this specification as described in 4.4. The first article sample shall be examined and tested for all requirements of this specification. The procuring activity reserves the right to accept the manufacturers
28、certification of testing, when available, in lieu of Government testing. Unless otherwise specified in the contract, a first article inspection shall be required if: a. There has been more than 12 months since production of the latest accepted lot b. There has been a relocation of the production fac
29、ility c. There has been a major change in personnel or procedures d. There has been a change in the source of supplies for the materials used in the manufacture of the coating compound. 4.2.1 First article sample. When specified, a test report from the manufacturer or a commercial laboratory shall b
30、e forwarded to the procuring activity before the first article sample (see 6.3) is tested showing the following: a. formula number of the compound b. formulation c. composition of the thermosetting compound including: (1) the identification of ingredient samples by specific chemical name and trade n
31、ame (2) laboratory data showing complete test results required by this specification except ignition. 4.2.1.1 Sample identification. The first article sample shall consist of 3 gallons (gal) of each component. The sample shall be tested by the manufacturer or forwarded to a testing facility as direc
32、ted by the procuring activity (see 6.2). If the sample is to be forwarded to a testing facility, the material shall be packaged in suitable containers and forwarded to testing activity as designated by the procuring activity (see 6.2). Each sample submitted shall be plainly identified by securely at
33、tached durable labels marked with the following information: Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-82633A (OS) 5 a. Sample for first article inspection b. Compound, Polymeric Elastomer, Thermosetting c. Components A and B d. Name an
34、d address of manufacturer e. Location and identity of the plant which produced the samples f. Manufacturers identification g. Date of manufacture h. Submitted by (name), (date), for first article tests in accordance with the requirements of MIL-DTL-82633. 4.3 Conformance inspection. For each inspect
35、ion lot of compound submitted for acceptance, the conformance inspection shall consist of an examination for acceptability of quality control methods used by the manufacturer, an examination of filled containers for conformance to packaging, packing, and marking requirements, and examinations and te
36、sts of samples for the requirements of 3.1.2 through 3.3.2, of this specification. 4.3.1 Conformance samples. The conformance samples shall consist of a sample for tests and a sample for examination of filled containers. The sample for test shall be labeled with complete information on each componen
37、t designation, on the lot and batch number, date of sampling, contract number, and applicable specification. 4.3.1.1 Inspection lot. An inspection lot shall consist of the same type polymeric compound produced by one manufacturer, at one plant, from the same materials, and under essentially the same
38、 manufacturing conditions. 4.3.1.2 Sample for tests. A 2-gal sample of each component shall be taken at random from each lot in accordance with ASTM D 140 and subjected to tests of 4.4. Unless otherwise specified, the values specified in section 3 apply to the average of the results obtained from du
39、plicate determinations for each particular test. The lot shall be unacceptable if a sample fails to meet all requirements of this specification except as noted in 4.3. 4.3.1.3 Sample for examination of filled containers. A random sample of filled containers shall be selected from each lot of compoun
40、d in accordance with MIL-STD-1916, verification level II and examined for fill, closure and damaged or leaking container, improper container, and marking. The sample containers shall be shipped as part of the lot if the lot is accepted. 4.3.1.4 Workmanship. Conformance of the compound to the require
41、ment for workmanship and any other requirements not covered by specific tests shall be determined by appropriate visual examination. 4.4 Test methods. 4.4.1 Specific gravity. Determine the specific gravity for both component A and component B by the pycnometer method for roads, oils, and tars descri
42、bed in ASTM D 70. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-82633A (OS) 6 4.4.2 Viscosity. 4.4.2.1 Equipment. a. Brookfield Synchrolectric Viscosimeter, Model RVT or RVF, or equivalent, with No. 5 spindle 4.4.2.2 Method. Determine the v
43、iscosity in centipoises of both component A and component B by Method B of ASTM D 1084. Use a 1-pint paint can as the standard container and the viscosimeter without cylindrical calibration sleeves. Condition samples at 75 5 F for a minimum of 2 hours (hr) prior to determining the viscosity. For bot
44、h components, use spindle No. 5 at 10 revolutions per minute. 4.4.3 Flash point. Determine the flash point of component A and component B in accordance with ASTM D 92. 4.4.4 Exothermic temperature. 4.4.4.1 Preparation of test sample. Prior to mixing, condition component A and component B at 75 5 F f
45、or 4 hr, without a constant temperature bath. Condition all containers and probes to be used in the test at the test temperature at the same time. 4.4.4.2 Procedure. Use the following procedure to determine exothermic temperature. a. Use 1-gal cans to contain the two individual components and to con
46、tain the final mixture. Weigh 1 lb of each component into individual containers and slowly stir each component separately by hand with a wooden paddle for 3 minutes, avoiding the entrapment of air. b. Combine the components in the recommended ratio to provide a convenient working quantity. c. Start
47、the stopwatch, and mix the components thoroughly for 3 minutes, avoiding air entrapment by slow agitation with a stirring rod or mixing paddle. To avoid transfer of heat, do not hold the container by hand during the mixing operation. Record the start of mixing as the “starting time.” d. Place the sa
48、mple container on a nonconducting surface in still air at the test temperature. e. Insert a thermocouple, or other temperature-measuring device, into the geometric center of the reacting mass, and record the observed temperature changes to the end of the test. f. Every 15 seconds, probe the center s
49、urface of the reacting mass with the applicator stick perpendicular to the material surface. g. Continue recording the time and temperature until the temperature starts to drop. Record the highest temperature reached as the peak exothermic temperature. 4.4.5 Gel time. 4.4.5.1. Preparation of test sample. Prior to mixing, condition component A and component B at 75 5 F for 4 hr, without a constant t
