1、INCH-POUNDMIL-E-82902 (OS)w/Amendment 103 March 2004 SUPERSEDINGMIL-E-829024 January 1995MILITARY SPECIFICATIONEXPLOSIVE, PLASTIC-BONDED, CAST PBXN-111This specification is approved for use by the Naval Sea Systems Command, Department of the Navy, andis available for use by all Departments and Agenc
2、ies of the Department of Defense.1. SCOPE1.1 Scope. This specification covers the requirements for the procurement of one type of cast,plastic-bonded explosive, PBXN-111, for use in ordnance.2. APPLICABLE DOCUMENTS2.1 Government documents.2.1.1 Specifications and standards. The following specificati
3、ons and standards form a part of thisdocument to the extent specified herein. Unless otherwise specified, the issues of these documents arethose listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS)and supplement thereto, cited in the solicitation (see 6.2).
4、SPECIFICATIONSMILITARYMIL-R-398 RDXMIL-A-23950 Aluminum Powder, SphericalDOD-D-82727 Dibutlytin DilaurateMIL-T-82825 TriphenylbismuthSTANDARDSMILITARYMIL-STD-129 Marking for Shipment and StorageMIL-STD-650 Explosive: Sampling, Inspection, and TestingComments, suggestions, or questions on this docume
5、nt should be addressed to Commander, Indian Head Division, NavalSurface Warfare Center, Technical Information Branch (Code 4230), 101 Strauss Avenue, Indian Head, Maryland 20640-5035,or emailed to pennamih.navy.mil. Since contact information can change, you may want to verify the currency of this ad
6、dressinformation using the ASSIST Online database at www.dodssp.daps.mil.AMSC N/A FSC 1376DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited.Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-2MIL-E-82902(OS)(Unless otherwi
7、se indicated, copies of military specifications and standards are available from:Standardization Documents Order Desk, Building 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.)2.1.2 Other Government documents, drawings, and publications. The following otherGovernment documents, drawings, and pu
8、blications form a part of this document to the extent specifiedherein. Unless otherwise specified, the issues are those cited in the solicitation (see 6.2).OTHER GOVERNMENT DOCUMENTSNAVAL AIR SYSTEMS COMMAND (CAGE Code 30003)AS 2328 Isodecyl PelargonateNAVAL SEA SYSTEMS COMMAND (CAGE Codes 10001 and
9、 53711)OS 9804 Ferric AcetylacetonateWS 16305 Isophorone DiisocyanateWS 16321 4, 4-Methylenebis (2,6-Di-Tert-Butylphenol)WS 18485 Ammonium Perchlorate (For Use in PBX Explosives)WS 23148 Polybutadiene, Liquid, Hydroxyl-Terminated(Application for copies should be addressed to the Commander, Naval Sur
10、face Warfare Center, IndianHead Division (Code 8410P), 101 Strauss Avenue, Indian Head, MD 20640-5035.)CODE OF FEDERAL REGULATIONS (CFR)49 CFR 100-199 Transportation(Application for copies of CFRs should be addressed to the Superintendent of Documents, U. S.Government Printing Office, Washington, D.
11、 C. 20402-0001.)2.2 Non-Government publications. The following documents form a part of this document to theextent specified herein. Unless otherwise specified, the issues of the documents which are DODadopted are those listed in the issue of the DODISS cited in the solicitation. Unless otherwisespe
12、cified, the issues of documents not listed in the DODISS are the issues of the documents cited in thesolicitation (see 6.2).CHEMICAL PROPULSION INFORMATION AGENCYCPIA Publication No. 21 JANNAF Solid Propellant Mechanical Behavior Manual(Application for copies should be addressed to the Chemical Prop
13、ulsion Information Agency, AppliedPhysics Laboratory, Johns Hopkins University, Johns Hopkins Road, Laurel, MD 20810.)AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM)ASTM D 1744 Water in Liquid Petroleum by Karl Fischer ReagentProvided by IHSNot for ResaleNo reproduction or networking permitted wit
14、hout license from IHS-,-,-3MIL-E-82902 (OS)(Application for copies should be addressed to the American Society for Testing and Materials, 1916Race Street, Philadelphia, PA 19103-1187.)(Non-Government standards and other publications are normally available from the organizations thatprepare or distri
15、bute the documents. These documents also may be available in or through libraries orother informational services.)2.3 Order of precedence. In the event of a conflict between the text of this document and thereferences cited herein, the text of this document takes precedence. Nothing in this document
16、,however, supersedes applicable laws and regulations unless a specific exemption has been obtained.3. REQUIREMENTS3.1 First article. When specified (see 6.2), a sample shall be subjected to first article inspection(see 6.3) in accordance with 4.4.3.2 Formulation. The PBXN-111 shall be a plastic-bond
17、ed, castable material that contains aplastic material used to bond the solid component material to form a flexible explosive. Theformulation of explosive PBXN-111 shall comply with the requirements specified in table I (see 6.7).3.2.1 Cure conditions. The explosive shall be cured at a temperature be
18、tween 20 and 50C until aShore A hardness of at least 20 is measured.3.2.2 Equivalent ratio. The weight percent of the polybutadiene and the isodecyl pelargonate shallbe kept in a ratio of 1:1 0.05. The weight percent of the polybutadiene and the isocyanate shall becalculated using an NCO/OH ratio of
19、 1:1 0.05. The NCO/OH ratio shall be calculated using theequivalent weights of materials obtained by chemical analysis using the techniques of 4.5.2 of WS 16305 and 4.6.2 of WS 23148. To avoid shelf life problems with component materials, thischemical analysis must be conducted at least every six mo
20、nths on lots of materials being used. Theweight percent of each ingredient shall be determined to two significant figures (see 6.4).3.2.3 Uncured explosive requirements. The uncured explosive shall have a maximum moisturecontent of 0.05 percent, as determined on a sample of uncured explosive taken b
21、efore the addition ofthe isocyanate (see 4.6.6).Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4MIL-E-82902(OS)TABLE I. PBXN-111 formulation.Ingredient Specification Nominal % by WeightAluminum (Al) MIL-A-23950 25.0Ammonium Perchlorate (AP) WS 18485
22、 43.0RDX Type B, Class 5 MIL-R-398 8.00 4.00RDX Type B, Class 1 MIL-R-398 12.00 4.00Polybutadiene, Liquid Hydroxyl-Terminated WS 23148 15.70Isodecyl Pelargonate AS 2328 15.704, 4-Methylenebis (2,6-Di-Tert-Butylphenol) WS 16321 0.05 0.01Isophorone Diisocyanate WS 16305 10.54Dibutyltin Dilaurate (DBTD
23、L) DOD-D-82727 20.004Ferric Acetylacetonate (FeAA) OS 9804 20.004Triphenylbismuth MIL-T-82825 20.0050.031 These are nominal values assigned to these component materials. The nominal composition ofPBXN-111 was derived using the values of the sample calculations (6.4.1) and the requirementsof 3.2.2. O
24、ther experimentally determined equivalent weights could result in slightly differentweight percent values for these component materials.2 Use either TBP, DBTDL or FeAA, with TBP being the preferred catalyst. The weight percent ofthe catalysts shall be:Catalyst Min. Max.TBP 0.005 0.03DBTDL 0.001 0.01
25、FeAA 0.001 0.013.3 Cured explosive requirements. The cured explosive shall meet the requirements oftable II (see 6.6).3.4 Workmanship. The explosive material shall be free from foreign materials andmanufactured in a manner to assure compliance with this specification. The sample shall thenbe evaluat
26、ed to determine acceptability and the approved standards of workmanship willthereby become a minimum requirement for all units offered for acceptance.4. QUALITY ASSURANCE PROVISIONS4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchaseorder (see 6.2), the contracto
27、r is responsible for the performance of all inspectionrequirements (examinations and tests) as specified herein. Except as otherwise specified in thecontract or purchase order, the contractor may use his own or any other facilities suitable forthe performance of the inspection requirements specified
28、 herein, unless disapproved by theProvided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-5MIL-E-82902(OS)Government. The Government reserves the right to perform any of the inspections set forth inthis specification where such inspections are deemed necessa
29、ry to ensure supplies and servicesconform to prescribed requirements.TABLE II. Cured explosive requirements.Property Min. Max. Test MethodDensity at 25C, g/cc 1.74 1.82 4.6.1Stress (max.) at 25C, psi 40 4.6.2Strain, max. stress, at 25C, % 8 4.6.2Hardness, Shore A, 15 second delay at 25C 20 4.6.3Vacu
30、um Stability at 100C (mL gas per g per 48 hours) 0.5 4.6.4% Ammonium Perchlorate (AP) 40 44 4.6.5% Aluminum (Al) 23 26 4.6.5% RDX 18 21 4.6.5% AP + % Al + %RDX 1 86 89 4.6.51 Values for the % AP, % Al, and % RDX above are to be determined from the average values obtainedon triplicate samples using t
31、he procedures of 4.6.5.4.1.1 Responsibility for compliance. All items shall meet all requirements of sections 3and 5. The inspection set forth in this specification shall become a part of the contractorsoverall inspection system or quality program. The absence of any inspection requirements inthe sp
32、ecification shall not relieve the contractor of the responsibility of ensuring that allproducts or supplies submitted to the Government for acceptance comply with all requirementsof the contract. Sampling inspection, as part of manufacturing operations, is an acceptablepractice to ascertain conforma
33、nce to requirements, however, this does not authorizesubmission of known defective material, either indicated or actual, nor does it commit theGovernment to accept defective material.4.2 Classification of inspections. The inspection requirements specified herein areclassified as follows:a. First art
34、icle inspection (see 4.4)b. Quality conformance inspection (see 4.5)4.3 Inspection conditions. Unless otherwise specified herein, all inspections shall beperformed in accordance with the test conditions specified in the applicable inspectionparagraph.4.4 First article inspection. First article inspe
35、ction shall be performed by the contractor,after award of contract and prior to production, at a location acceptable to the Government. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-6MIL-E-82902(OS)First article inspection shall be performed on sam
36、ples which have been produced withequipment and procedures normally used in production. Any production prior to acceptance ofthe first article sample shall be at the contractors risk.4.4.1 First article sample. The sample shall consist of two sets of representative explosivematerial selected from a
37、minimum batch of 225 kg after isocyanate has been added. A setshall contain approximately 2000 g of explosive. A set shall be composed of two specimens ofexplosive, the first selected from the first third of the batch and another separate specimenselected from the final third of the batch. A batch i
38、s defined as that quantity of material thathas been subjected to one or more chemical or physical processes (or combination thereof)intended to produce a desired product having substantially uniform characteristics.4.4.2 Inspection routine. Material from one of the two sample sets from the batch sha
39、llbe subjected to the tests specified in 4.6. The second sample set shall be forwarded to theprocuring activity in a form suitable for the tests specified in 4.6. Failure to meet therequirements of this specification shall be cause for rejection of the first article sample.4.5 Quality conformance in
40、spection. Quality conformance inspection shall consist of thetests specified in 4.6.1, 4.6.3, and 4.6.5.4.5.1 Sample. The quality conformance sample shall be the same as that of 4.4.1, exceptthat it shall consist of one set. Uncured material for analysis shall be selected from the samecontainers fro
41、m which the cast samples are poured. Explosives failing to meet any of therequirements shall be classed as defective and shall be cause for rejection of the batch fromwhich it was obtained.4.5.1.1 Sample identification. Each explosive sample container and specimen shall bemarked with the following i
42、nformation:a. Complete explosive designationb. Lot numberc. Weight of the lotd. Manufacturers name and plant designatione. Contract numberf. Date of manufacture and sampling4.6 Test methods. All explosive specimens used in the tests of 4.6.1 through 4.6.6 shall becured to a constant Shore A hardness
43、 meeting the requirements of 3.2.1.4.6.1 Density.4.6.1.1 Samples. Density shall be determined on two samples cut from two separate curedtest specimens (one sample taken from the beginning of the pour and one sample taken from theend of the pour). Each sample should weigh between 10 and 20 g.4.6.1.2
44、Density determination. The density of the sample shall be determined on ananalytical balance equipped for weighing in a liquid medium. The sample shall be weighed toan accuracy of 0.1 mg, first in air then in hexane.Provided by IHSNot for ResaleNo reproduction or networking permitted without license
45、 from IHS-,-,-7MIL-E-82902(OS)4.6.1.3 Density calculation. The density shall be calculated according to the followingformula:Where:D = Density of test sample, g/ccDH = Density of hexane at test temperature, g/ccWa = Weight of test sample in air, gWb = Weight of test sample in hexane, g4.6.1.4 Failur
46、e. If one sample selected for density fails to meet the requirements of tableII, another sample shall be taken from the same section of mix and tested. If the secondsample meets the density requirement, the batch shall be considered to meet the densityrequirement of this specification. If the second
47、 sample fails to meet the density requirement,then the batch shall be considered unacceptable.4.6.2 Stress and strain at maximum stress. Stress and strain at maximum stress shall bedetermined in accordance with JANNAF Solid Propellant Mechanical Behavior Manual, CPIAPublication No. 21, Section 4.3.2
48、, Uniaxial Tensile Tests at Constant Strain Rate, Nov. 1970. Class C testing shall be used; however, final specimens may be die cut from the half-inchslices from the bulk sample. The specimens for testing may be selected from the first third ofthe batch or the final third when sampled as described i
49、n 4.4.1.4.6.3 Shore A hardness test.4.6.3.1 Sample. The explosive of 4.5.1 in a suitable form as in 4.6.1.1 shall be tested forShore A hardness. Any sample which exhibits bleeding at the surface at the end of the cureperiod shall not be tested.4.6.3.2 Shore A hardness (15 seconds) determination. The hardness of the curedmaterial shall be determined using a Type A-2 durometer, with a maximum dial indicator orhand, together with a const
