1、M I L -A-82484 33 June 1967 SUPERSEDING (See Section 6) MILITARY SPECIFICATION ADHESIVE AND SEALING COMPOUNDS, CELLULOSE NITRATE BASE, SOLVENT TYPE (FOR ORDNANCE USE) This specification is mandatory for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 This specification
2、 establishes the requirements for cellulose nitrate based adhesive and sealing compounds that are suitable for Ordnance use (see 6.1). 1.2 Classification - The adhesive hd sealing,cornpounds shall be of the following types, as specified (see 6.2, 6.6.1). . Type I - Adhesive, Ordnance (38 to 42 perce
3、nt solids content) Type II - Adhesive, Ordnance (Low Viscosity) Type III - Sealing Compound, Ordnance (Clear or Colored by Dye) 2. APPLICABLE DOCUMENTS 2.1 The followtnp documents, of the issue in effect on date of invitation for bids, or request for proposal, form a part of this specification to th
4、e, extent specified herein. SPECIFICATIONS Federal TT-B-838 Butyl Acetate, Normal (For Use in Organic Coatings) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-82484 Federal (Continued) TT-N-350 TT-P-143 Military MIL-E-463 JAN-A-489 STANDARDS F
5、ederal FED-STD-141 Military MIL-STD-105 Organic Coatings) Paint, Varnish, Lacquer and Related Materids; General Specification for Packaging, Packing and Marking Ethyl Alcohol (For Ordnance Use) Acetone (For Ordnance Use) Paint, Varnish, Lacquer and Related Materials; Methods of Inspection, Sampling
6、and Testing Sampling Procedures and Tables for Inspection by Attributes (Copies of specifications and standards required by suppliers in connection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer. ) 3. REQUIREMENTS 3.1 Data
7、 - No data is required by-this specification or by the applicable documents referenced in Section 2 unless specified in the contract or order (see 6.2). 3.2 Materials (Type III) only - The Type III compound shdl be a uniform solution or homogeneous dispersion of celhlose nitrate of differeht viscosi
8、ties and organic plasticizers in relatively low bojling organic solvent mixtures, so formulated as to meet all the applicable requirements of this specification. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-A-82qAV 80 7997906 OLL0837 7 M MIL
9、-A-82484 3.2.1 Suitability for Ordnance use (Type III only) - When specified by the procuring activity, the compound shall be subjected to such tests as necessary to demonstrate its acceptability for use in Ordnance (see 6.2). 3.2.2 Solvent toxicity (Type III only) - The manufacturer shall certify i
10、n writing that each of the organic solvents used in the compound has a threshold limit greater than 100 parts per million. The threshold limit value of any solvent shall be that published by the American Conference of Governmental Industrial Hygienists (see 4.4.1 and 6.8). 3.2.2.1 . Benzene and chlo
11、rinated solvent (All Types) - When tested as specified in 4.5.6, there shall be no benzene or chlorinated solvent present. in the compound. 3.3 Composition (Types I and II) - The manufacturer shall certify in writing that compounds conform to the requirements and proportions specified in Table I (se
12、e 4.4.1). TABLE I (COMPOSITION OF TYPES I AND II) Ingredient Specification Percent (by weight) Type I Type II -. .- Cellulose nitrate TT-N-350, Type II 26 fl 13 f1 Methyl abietate Good commercial grade, 90 percent 14 51 7 51 Ethyl alcohol MIL-E-463, Grade 2 26 fl 34 fl Acetone JAN-A-489 17 fl 23 51
13、Butyl acetate TT-B-838 17 kl 23 51 3.3.1 Color (Type III only) - When specified by the procuring activity (see 6.2), Type III compound shall be colored green or red by the addition of soluble dyes. When tested as specified in 4.5.9, the compound shall deposit a film that is distinctly green or red i
14、n color. 3.4 Properties (All Types) - The compounds shall conform to the applicable requirements specified in Table II. 3.5 Adhesion to and corrosion of brass (All -Types) - When tested as specified in 4.5.7, the compound shall form a tough, adherent film on brass. The film shall be difficult to rem
15、ove from the panel and shall strip off in a ribbon when scraped with a sharp knife blade, The brass, after removal of the cellulose nitratefilm, shall show no sign of chemical attack or corrosion. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A
16、-82484 TABLE II Property Non-volatile, % Viscosity, poise Air dry time, tack free A/ Air dry time, dry hard - 2/ Shear strength, pounds per square inch, min. Flexibility (after 4 hours 121 f2O C) - 3/ Color (of clear compounds) Blushing Test h FED- STD- 141 4041 4271 406 1 - - 6222 4242 3thod Requir
17、ement I Para. Type I Type II Type III No. - 40 *2 20 f2 20 to 26 - 63 to 120 0.6 to 1. O 55 to 75 - - - 5 minutes, Max. I 4.5.2 30 minutes, mm. 4.5.3 200 150 - No cracking or flak- - ing, 1/8 inch mandrel - - I No darker than No, 3 Hellige I 4.5.4 1 Positive I 4.5.5 No more than slight streaking or
18、dis- coloration J,/ O. O01 to O. 002 inch dry film. - 2/ O. 020 +O. 002 inch wet film. - 3/ Type I, O. 004 inch min. dry film; Type II, O. 002 inch min. dry film Air dry 24 hours prior to baking. 3.6 Cold stability (All Types) - When stored at -25 C (-13 F) for 16 hours as specified in 4.5.8, the co
19、mpound shall show no sign of gelation, separation, sedimentation, or any other deterioration. 3.7 Workmanshik (All Types) - When examined visually, the compound shall be a homogeneous material that is free from lumps, gelation, separation, sedimentation and foreign matter. 4. QUALITY ASSURANCE PROVI
20、SIONS 4.1 Responsibiliiy for inspection - Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of dl 4 “ - 6. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-82484 inspection requirements
21、 as specified herein. Except as otherwise specified, . - the supplier may utilize his own facilities or any commercial laboratory accept- able to the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed neces
22、sary to assure that supplies and services conform to prescribed requirements. 4.2 Lot formation - For purpose of sampling, a lot shall consist of an indefinite number of unit containers of the same size and construction that have been filled with compound from one batch, and presented for inspection
23、 at one time. A batch is defined as that quantity of adhesive which has been mixed, blended, or processed in a single operation intended to make the final product substantially uniform. 4.3 Quality conformance samples - 4.3.1 Samples for tests - Two 1-pint samples of the compound shall be selected a
24、t random from each lot either during. or after the filling operation. Each sample shall be placed in a separate, clean, dry container. The container shall be sealed with a tight cover and marked with the lot number, the sample number, and the product identification. 4.3.2 Samples of the end item and
25、 preparation for delivery - Samples for the inspections specified in 4.4.2.1, 4.4.2.2, 4.4.2.3, and 4.4.2.4 shall be selected at random from each lot in accordance with MIL-STD-105 and Table III. The lot size shall be the number of unit containers for inspections 4.4.2.1, 4.4.2.2, and 4.4.2.3; and t
26、he number of shipping containers for inspection 4.4.2.4. TABLE m Inspection End item (4.4.2.1) Filled unit containers (4.4.2.2) Net contents (4.4.2.3) Shipping containers (4.4.2.4) Inspection Level s- 3 s- 3 s- 2 II AQL 4. o 2.5 - 2.5 Sampling Unit Filled unit container Filled unit container Filled
27、unit container Shipping container fully prepared for delivery (just prior to closure) 4.4 Quality conformance inspection - 4.4.1 Inspection of samples for tests - Each sample selected in 4.3.1 shall be examined and tested to determine-conformance to all the applicaljle F“ Provided by IHSNot for Resa
28、leNo reproduction or networking permitted without license from IHS-,-,-for the defects classified in 4.4.2.1, 4.4.2.2, 4.4.2.3 and 4.4.2.4 and to determine compliance with all the other applicable. requirements of Section 5 of this specification. If the number of defective samples exceeds the Accept
29、able Qu a nonbrittle film will strip off in ribbons. Remove the remaining film with acetone or other suitable solvent. Using a bright light and a 10 power magnification, examine the brass for any sign of chemical attack or corrosion. Provided by IHSNot for ResaleNo reproduction or networking permitt
30、ed without license from IHS-,-,-of the compound to a 4 ounce jar. After tightly sealing the jar place it in a cold box at -25 k3 C (-13 +Go F) for 16 hours. After 16 hours examine the compound while still in the cold box for signs of gelation, separation, sedimentation or any other deterioration. In
31、troduce the recommended thinner into the sample while stirring with a spatula and observe for ease of reduction at -25 C. Extreme difficulty in incorporating the thinner into the compound will be evidence that the compound has gelled. 4.5.9 Color (me III with dye) - Apply a brush coat of the compoun
32、d to a smooth, clean brass panel. After air drying for 30 minutes at room tem- per.gture, examine the film deposited on the panel for a distinctly red or green coloration. 5. PREPARATION FOR DELIVERY . 5.1 Packaging and packing - Packaging and packing shall be in accordance with the requirements of
33、TT-P-143 for unpigmented liquid products. Packaging shall be Level A or C; packing shall be Level A, B or C as specified (see 6.2). 5.2 Marking - All containers shall be marked in accordance with TT-P-143. 5.2.1 Additional marking (All Types) - 5.2.1.1 All containers (unit, intermediake and shipping
34、) shall be marked with the following. (a) DANGER: HIGHLY FLAMMABLE. DO NOT USE NEAR HEAT OR FLAME (b) CAUTION: USE WITH ADEQUATE VENTILATION 5.2.1.2 Unit containers only shall be marked with the following: Directions for use - Directions for use to include but not be limited to (1) thinning instruct
35、ions for spray application, and for material that has thickened in storage (as applicable); (2) surface preparation,priming, method of application and bonding, and drying conditions shall be marked on each unit container. 6. NOTES 6.1 Intended use - Types I-and II compounds are intended for general
36、Ordnance use in ammunition. General use does not imply that the compounds are to be used as Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-i MIL-A-82484 80 3999906 OLZ0844 4 W .“ . - - MIL-A-82484 all purpose adhesives; they are not recommended for
37、use with concrete, wood, rubber, ceramics or p-ker. Types I and II may be used to provide good bonds for glass, leather, metals, textiles and some types of thermoplastics. “ manufacture of ammunition. Type III compound is intended for use as a sealing compound in the 6.2 Ordering data - Procurement
38、documents should specify the following: (a) Title, number and date of this specification. (b) Type of compound and whether dye shall be added to (c) Size and type of unit container (see 5.1). (d) Quantity required. (e) Levels of packaging and-pmking (see 5.1). (f) Whether special Ordnance tests are
39、required (see 3.2.1). (g) Additional data, if required (see 3.1). Type III compound (see ;3.3,1). 6.3 Influences on application techniques - In applying compounds pro- cured under this specification, the using activity should maintain flexibility in its application techniques. For example, variation
40、s in temperature and humidity influence drying time. Variations in surface conditions may require cleaning of the surface to remove waxes, oh, or greases. Porous surfaces may require a preliminary coat of adhesive to seal the surface. 6.4 Thinner (mes I and II only) - The following thinner compositi
41、on is considered satisfactory for use with Types I and II compounds. Ethyl dcohl 42 LC2 percent Acetone 29 f2 percent Butyl acetate 29 52 percent 6.5 Humidity - The conditions specified in 4.5.5 may be obtained by placing a wet towel, one end of which dips in a beaker of water, in an oven at 35 C. G
42、. 6 Supersession data - This specification supersedes the requirements of MIL-A-11238A (ORD) dated 18 September 1962, and Type III, only, of MIL-A-388A, dated 9 June 1959. 6, 6.1 Cross reference - Superseded specifications TYPe I - identicd to Type I of MIL-A-l1238A(ORD) Type II identicd to Type II
43、of MIL-A-l1238A(ORD) .“. .“ .-.Tm=QII identical to Type III of MIL-A-388A Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-A-82484 NOTE Types I and II of MIL-A-388A have been superseded by Types I and II, respectively, of MMM-A-105. 6.7 Marginal n
44、otations - The margins of this specification are marked with an asterisk to indicate where changes (deletions, additions, etc.) to the superseded documents were made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidde
45、rs and contractors are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notations and relationship to the superseded documents. 6.8 Toxicity- Any questions regarding possible toxic effects on per- sonnel from contact, or by breathing va
46、pors, shall be referred to the appropriate departmental medical authority. In the case of Army procurement, the procuring agency will determine that the adhesive and sealing compounds, when used for their intended purposes are not likely toresult in adverse effects on health of personnel. The Surgeo
47、n General will act as -&visor in those instances where professional medical advice is indicated. Military custodians: Preparing activity: Army - MR Navy - OS Air Force - 84 Review activities: Army - GL, MR, MU Navy - AS, OS Air Force - 84 Navy - OS Project No. 8040-0188 WS. GOVERNMENT PRINTING OFFICE: 1867-261-520/6826 . _. 11 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
