1、MIL-L-82677(0S) 10 January 1978 MILITARY SPECIFICATION This specification is approved for use by the Naval Sea Systems Comnand, Department of the Navy, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCDPE 1.1 Scope. polybutadiene base liner material. This s
2、pecification covers the requirements for one type of 2. APPLICAEEE DocuMEwrs 2.1 Issues of documents. on date of invitation for bids or request for proposals form a part of the specification to the extent specified herein. SPEC1F;TCATIONS The following documents of the issue in effect FEDERAL L-P-50
3、9 7T-D-301 MILITARY MIL-D-6998 MIL-P-23942 MIL-A-81236 Plastic Sheet, Rod and Tube, Laminated, Themsett ing Dibutyl Phthalate: Plasticizer (For Use in Organic Coatings) Dichloromethane , Technical Polybutadiene, Linear, Carboxyl Terminated Adhesive: Epoxy Resin with Polyamide Curing Agent MIL-R-8265
4、7 Resin, Epoxy, Trifunctional Beneficial comnts (recomndations, additions, deletions), and any pertinent data which may be of use in improving this document, should be addressed to: Conmanding Officer, Naval Ordnance Station, Standardization Division (611), Indian Head, MD 20640, by using the self-a
5、ddressed Standardization Document Improvement Proposal (DD Form 1426) appeasing at the end of this doeument, or by letter. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-L-Zb77 13 m 777770b 0362564 m - .* MIGG82677( OS) DRAWINGS NAVAL AIR SYS- C
6、OMMAND (CODE IDENT 30003) 673AS128 673AS130 Modifier, Cure Curative 673AS131 Filler, Liner 736AS115 Tri-Phosphite (Copies of specifications, standards, drawings, and publications required by suppliers in connection with specific procurement functions should be obtained from the Government procuring
7、activity or as directed by the contracting officer.) 2.2 0t;her publications. specification to the extent specified herein, the issue in effect on the date of invitation for bids or request for proposal shall apply. lhe following documents form a part of this Unless otherwise indicated, AMERICAN SOC
8、IFI7I FOR IESTING AND MAR1AI.S (ASTM) ASTM D 412-75 Tension Testing of Rubber ASTnll D 792-66 Specific Gravity and Density of Plastics by Displacement (Applications for copies should be addressed to the American Society for testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) CHEMICAL P
9、RPWION INMIRMATION AGENCY (CPIA) CPIA Publication No. 21 Behavior Manual ICRPG Solid Propellant Mechanical (Application for copies should be addressed to the Chemical Propulsion Information Agency, Johns Hopkins University, Applied Physics Libratory, 8621 Georgia Avenue, Silver Spring, MD 20910.) (T
10、echnical society and technical association specifications and standards are generally available for reference from libraries. They are also distributed mng technical groups and using Federal agencies.) 3.1 Preproduction sample. When specified in the contract (see 6.2), the contractor shall produce a
11、 preproduction sample of the liner material for preproduction inspection and approval (see 4.4.1 and 6.2). shall be mufactured using the mthods and procedures proposed for The sample 2- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-L-2677 13 =
12、7779906 O362565 T I production. the purpose of determining that, prior to starting production, the contractors production methods are capable of yielding items that corrg?ly with the technical requirements of the contract. The sample shall be tested as specified in section 4 for 3,2 Formulation. The
13、 formulation of the liner material shall be in accordance with TAE3LE I and the following : TBLE I. Liner Material formulation. Ingredients Binder : Polybut adiene Curative Resin, liquid,epoxy Dibutyl phthalate Tr i-Phosphit e Liner filler Cure mdifier - Diluent : Dichloranethane Specification Parts
14、 by weight OF draiving MIL-P-23942, type II 673AS130 MIGR- 82657 “F-E-301 7 36AS115 66.88 1.60 to 2.65 1.15 to 1.90 8.36 1.67 673AS131 673AS128 16.72 2.68 MIGD-6998, grade B Approx. 1.5/1.0 diluent to liner mat erial 3.2.1 Curative and liquid epoxy resin. liquid epoxy resin shall be adjusted within
15、the range specified in TBLE I The mmt of curative and so as to provide the curgd liner physical properties specified in TAEK!3 II. 3.2.2 Diluent. The ratio of diluent to liner material shall be adjusted from batch to batch so as to provide the proper viscosity for application of the liner material a
16、nd to result in the proper liner weight. 3.2.3 Weighing accuracy. accuracy of 0.7% of the values specified in TABLE I or to the nearest 0.1 gram (g) * whichever is greater. Fach lher ingredient shall be weighed to an 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without lice
17、nse from IHS-,-,-MIL-L-2677 13 W 7979906 03b25bb L W MIGG82677( OS ) 3.3 Cured liner physical properties. steps. The precure shall be accomplished by exposure to 74 f 5.5“C (165 3. 10F) for 40 to 64 hours (h) . obtained during the cure of the applicable propellant. properties of the final cured line
18、r shall be in accordance with T.Al3.Z II. The liner shall be cured in two The final cure of the liner shall be The physical TABLE II, Cured liner physical properties Property Test temperature I Liner Bond to Propellant (a) * 24 Hours - Maximum tensile strength, minimum (psi (b) (a) * 4 Weeks - Maxim
19、um tensile * 24 Hours - Type Failure strength, minimum (psi (b) * 4 Weeks - Type failure (a) * 8 Weeks - Maximum tensile (b) * 8 Weeks - Type failure (a) * 13 Weeks - Maximum tensile (b) I strength, minimum (psi .- strength, minimum (psi * 13 Weeks - Type failure 77F . 165F 80 CP or BI B Or CPI CP o
20、r CPI 91 57 8 or BI I 8. Liner 450F ! 77F 165F 75 (c) Maximum stress, minh (psi) 300 100 (d) Elongation at maximum stress, 175 i 75 minimum (%) i t 100 1. (e) Density ( g/m3), 68 to 86F O. 941 to 1.052 * Storage conditions for all samples tested shall be 165F at 22 percent relative humidity. One hal
21、f of sanples from each withdrawal shall be tested at 77F and one half shall be tested at 165F. * Refer to CPIA Publication No. 21, Section 4.7.1 - 3. -4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-L-2677 13 m 7777706 0362567 3 m AIIGL-82677(m
22、) 3.4 FYorlrmanship. The liner material shall be uniform in consistency, free from contamination, foreign materials, or any other defect that would prevent its use for the purpose intended. 4. QUAJ-,I!LY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contra
23、ct, the contractor is responsible for the perfomce of all inspection requirements as specified herein. in the contract, the contractor may use his own or any other facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the Government The Govern
24、ment reserves the right to perform any of the inspections set forth in the specification where such inspections are deemednecessary to assure that supplies and services conform to prescribed requirements. Except as otherwise specified 4.2 Classification of inspection. ?he inspection requirements spe
25、cified herein are classified as follows: 1. Preproduction inspection (see 4.5). 2. Quality conformance inspection (see 4.6). 4.3 Inspection conditions. nless otherwise specified herein (see 6.2), all inspections shall be performed under the following conditions: a. Temperature: Rom ambient 18 to 35C
26、 (65 to 95F) b. Altitude: Normal ground c. Vibration : hbne d. Humidity: Room ambient to 95 percent relative, maximum 4.4 Sampling. 4.4.1 Preproduction sampling. When specified in the contract (see 6.2), a preproduction sample batch shall be prepared as specified in 3.1 and subjected to .the preprod
27、uction inspection specified in 4.5. 4.4.2 Quality conformance inspection sanpling. ?he quality conformance inspection consists of in-process monitoring of the weighing and blending of constituents (see 4.6). Sampling, therefore, shall not be required. 4.4.3 Batch. A batch shall consist of all liner
28、material produced at one time in one mixer. 4.5 Preproduction inspection. The preproduction inspection shall consist of the tests of 4.5.3 through 4.5.5 conducted on specimens prepared in acbrdance with 4.5.1 and 4.5.2 from the sample liner material of 4.4.1. 5 Provided by IHSNot for ResaleNo reprod
29、uction or networking permitted without license from IHS-,-,-MIL-L-2677 13 m 7777706 0362568 5 m MIL-G82677( Os) 4.5.1 Liner bond specimen preparation. The liner bond specimens shall be prepared as follows: a. Clean and line to the proper thickness one side of each of two 6 X 6 X 0.031 inch thick gla
30、ss epoxy sheets, conforming to grade G10, type IV of GP-509, concurrent with the cleaning and lining of the applicable inhibitor tubes. 64 h. Precure at 74 k 5.5OC (165 k 10F) for 40 to b. Remve sufficient mixed propellant from the propellant container after mixing and prior to casting the propellan
31、t grains to make propellant layer 0.5 inches thick for a. above. the two lined sheets. Place this uncured propellant between c. Place the resultant sandwich under a minimum vacuum of 27 inches The pressing shall of mercury for 1 minute and press the sandwich with a force of 500 to 1,000 pounds for 1
32、5 to 30 seconds while under vacuum. be done in a close fitting square mold. d. Cure the liner/propellant sandwich in its mold in the cure oven concurrent with the batch of propellant grains it represents. e. Cut the 6 X 6 inch sandwich into 1 X 1 inch pieces. Sand the external flat surfaces of the g
33、lass epoxy sheet with course sandpaper (approximately 60 mesh), and bond on the mild steel tees with a 50/50 mix by weight of adhesive and curing agent in accordance with MIL-A-81236. Repeat the procedure for an additional two glass epoxy sheets. f. 4.5.2 Cured liner material specimen preparation. S
34、ample liner material shall be fomd into sheets and precured in a platen press at 74 rC 5.5“C (165 k 10F) for 40 to 64 h. oven concurrent with the batch of propellant grains they represent. The samples shall then be cured in the cure 4.5.3 Liner bond test. in accordance with CPIA publication Nmkr 21
35、to verify conformance with TABLE II (a) and (b). tenperature combination. Failure of the average bond strength of the five specimens or of the type of failure of any specimen to meet the requirements of TABLF: II (a) and (b), respectively, shall be cause for rejection of the preproduction sample. Ih
36、e test specimens of 4.5.1 shall be tested Five specimens shall be tested for each time- 4.5.4 Stress and elongation test. at maximum stress of five specimens from the sample of 4.5.2 for each The maximum stress and the elongation temperature specified in TAI3LE II (c) and (d) shall be determined in
37、accordance with ASTM D 412-75, method A, die C, value of the five specimens to confomto the requirement of TABLZ II (c) or (d) shall be cause for rejection of the preproduction sample. Failure of the average 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from
38、IHS-,-,-MIL-L-2677 13 m 7397706 0362569 7 MIGL82677( OS) 4.5.5 Density test, of 4.5.2 shall be subjected to a density test in accordance with ASTM D 792-66, method A-1 with the exceptions that isopropyl alchohol be used in place of water and that the test temperature be 20 to 30C (68 to %OF). Failur
39、e of the average vaiue of the three specimens to conform to the requirement of TAl3LE II (e) shall be cause for rejection of the preprcduct ion sample. Three test specimens of 2 to 1% from the sample 4.6 Quality conformance inspection. The quality conformance inspection shall. consist of the inspect
40、ion of weighing and blending procedures and techniques. sheets for each batch of liner material produced. The mix sheets shall be available for inspection by the Government upon request. The contractor shall maintain records consisting of mix 5. ACXAGING This section is not applicable to this specif
41、ication. 6.1 Intended use. Liner material in accordance with this specification is intended to be used as a liner between the mtor tube and the propellant of various cartridge and propellant activated devices; specifically, the Ml19 rocket motor assembly in accordance with MIL-R-50753. 6.2 Ordering
42、data. - Procurement documents should specify the following: 6.2.1 Procurement requirements. a. b. Quantity required. c. d. e. Title, number and date of this specification. Applicable drawings for motor tube, liner material thickness and type of propellant. When a preproduction sample is required (se
43、e 3.1, 6.3 and 6.4). Inspection conditions when other than as specified (see 4.5). 6.2.2 Contract data requirements. Any data required for delivery in connection with this document shall be specified on a DD Form 1423 incorporated into the contract. on completed (numbered) DIB (Data Item Description
44、s/DD 1664) which will be documented iii the Applicable ADL (Authorized Data List). 6.3 Preproduction sample. Vhen a preproduction sample is required (see 6. ad) , it shall be tested and approved under the appropriate provisions of 7-104.55 of The Armed Services Procurement Regulation (ASPR). The con
45、tracting officer should include specific instructions in all procurement instruments regarding arrangements for examinations, test and approval of the preproduction sample. 6.4 Preproduction sample waiver. Preproduction samples submitted and approved on a recent contract (a contract remaining in pro
46、duction or a contract out of production for less than one year) may be accepted by the Procuring activity in lieu of an additional preproduction inspection. Such data will be delivered as identified Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL
47、-L-82677 13 777970b 03Li2570 3 MIG.G82677( OS) When the production sample is waived (see 6.2.1 d. ) , the procurement document should contain a statement specifying that the standards of workmanship exhibited by the previously approved preproduction sample shall determine the minm requirements of th
48、e current contract or order, 6.5 Suggested source of supply. of this specification in past procurement actions is UF 44-055, Universal Propulsion Co., P. O. Box 3126, 117 Hayden Rd., Tempe, AZ 85281. This information is for the convenience of the procuring activity and is not to be construed as a wa
49、iver of any requirement of this specification nor as any limitation of additional potential sources of supply. A product that has met the requirements Custodian : NAW-CXS *U.S. GOVERNMENT PRINTING OFFICE: 1978 - 703-122/707 8 Preparing Activity Project Number NAVY - CE 1377 - N644 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
