1、1 1 MIL-P-63462 73 W 7939706 0322373 7 W 7-57 - -Y 7 NIL-P-6 34 6 2 (AR) 10 September 1979 MILITARY SPECIFICATION PLASTIC MOLDING AND EXTRUSION MATERIAL, ETHYL CELLULOSE, FOR ROCKET GRAIN INHIBITING MATERIALS This specification is approved for use by the Missile Command, Department of the Army and i
2、s available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 molding, and extrusion for rocket grain inhibiting materials. This specification covers ethyl cellulose suitable for injection 1.2 Classification. The ethyl cellulose compounds shall be of the following ty
3、pes and classes (see Table I), as specified. (See 6.2). Table I. Classification of ethyl cellulose compounds Type Class Tensile strength, MPa (psi) min I - Extrusion 1 37.2 (5400) 2 33 (4800) 3 31 (4500) II - Injection molding 1 26 (3800) 2. Applicable Documents 2.1 The following documents of the is
4、sue in effect on date of invita- tion for bids or request for proposal; form a part of this specification to the extent specified herein. MILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attributes. MIL-STD-129 - Marking for Shipment and Storage. Beneficial comments (recommend
5、ations, additions, deletions) and any per- tinent data which may be of use in improving this document should be addressed to: Commanding General, Ariny Armament Research and Development Command, ATTN: DRDAR-LCA-OK, Dover, NJ 07801 by using the self-addressed Standardization Document Improvement Prop
6、osal (DD Form 1426) appearing at the end of this document or by letter. pr. FSC 9330 Licensed by Information Handling ServicesMIL-P-63q62 93 9999906 0322392 O = MIL-P-63462 (AR) (Copies of specifications, standards, drawings, and publications required by suppliers in connection with specific procure
7、ment functions should be obtained from the procuring activity or as directed by the contracting officer.) 2.2 Other publications. The following documents form a part of this specification to the extent specified herein. the issue in effect on date of invitation for bids or request for proposal. shal
8、l apply. Unless otherwise indicated, American Society for Testing and Materials (ASTM) Standards: D 569 Measuring the Flow Properties of Thermoplastic Molding Materials. D 570 Water Absorption of Plastics. D 618 Conditioning Plastics and Electrical Insulating Materials for Testing . D 638 Tensile Pr
9、operties of Plastics. D 648 Deflection Temperature of Plastics Under Load. D 785 Rockwell Hardness of Plastics and Electrical Insulating Materials. D 792 Specific Gravity and Density of Plastics by Displacement. D 914 Standard Method of Testing Ethyl Cellulose. (Application for copies should be addr
10、essed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, Pennsylvania 19103.) National Motor Freight Traffic Association, Incorporated, Agent: Natjlonal Motor Freight Classification. (Application for copies should be addressed to the American Trucking Associations, In
11、c., Tariff Order Section, 1616 P Street N.W., Washington, D.C. 20036.) Uniform Classification Committee, Agent: Uniform Freight Classification (Application for copies should be addressed to the Uniform Classification committee, Room 1106, 22 South Riverside Plaza, Chicago, Illinois 60606.) U.S. Depa
12、rtment of Transportation (DOT) Specification 21C - Fiber Drums (This and other specifications on hazardous materials issued by DOT are published in the Code of Federal Regulations (CFR), available from the Superintendent of Documents. U.S. Government Printing Office, Washington, D.C. 20402. Spec 21C
13、 is published in Title 49, p. 945, 8178.224.) 2 o :. Licensed by Information Handling ServicesI flIL-P-63qb2 93 = 999990b 0322393 2 MIL-P-63462 (AR) 3. REQUIREMENTS 3.1 Material. The material shall consist of plasticized ethyl cellulose thermoplastic compounds as follows: Proportions. - The ingredie
14、nts of the material shall be compounded in the following proportions: Type 1 5Pe 2 Ethyl Cellulose Flake 100 Parts 100 Parts Stabilizer O to 2.2 Parts Plasticizer 17.7 to 25.0 Parts 31 to 35 Parts . - When a stabilizer is used, a corresponding reduction in the limits of plasticizer is requlred. tion
15、s of flake and plasticizer to be varied to give the proper extrudability and desired physical properties to the compounded material. The variation in formulation allows the propor- 3.1.1 Ethyl Cellulose Flake Ethoxyl content 45% to 47% (ASTM D 914) Viscosity of flake 65 to 85 x lo3 Pa-s (65 to 85 cp
16、s) (When measured at 25 2 l0C with a 5% solution of the flake in a 60/40 solution of toluene/95% ethanol in accordance with ASTM D 914). NOTE: One acceptable source of this material is: Dow Chemical USA (Ethocel, Standard Grade, 70 cps completely de- ached). 3.1.2 Plasticizer, substituted phenyl eth
17、er - with bis (p-1,1,3,3 (Dow P- tetramethyl butyl phenyl) ether as the principal constituent. 1099 plasticizer is the only commercial form of-this material). Specification: (1) Color Light Amber (2) Minimum % Transmission 45 through 1 cm. of liquid (450 millimicron wave length) (3) Viscositz at 25O
18、C, m /s (.Cent istokes) 4 - 8 x (4000 - 8000) (4) % Volatile (148.5OC and 9 5 x lo2 Pa (4mm Hg) pressure for one hour) maximum 3 . Licensed by Information Handling ServicesMIL-P-63462 73 9999906 0122394 4 MIL-P-6 3 4 6 2 (AR) (5) Acid number O. 5 (6) Specific Gravity, 25/4OC O. 92-0.95 3.1.3 Dye or
19、Colorants. - No dye or other colorant is permissible unless otherwise specified by the procuring agency. 3.1.4 Stabilizer. Epoxy Resin - Em-2774 (manufactured by Union Carbide Company) may be used as a stabilizer. be used as stabilizers with permission of the procuring activity. Alternate materials
20、may 3.2 Property values. The material shall conform to the property values specified in Table II, when tested as specified in the applicable procedure of 4.3. Table II. Property values. Type I Type II Property Class 1 Class 2 Class 3 Class I Specific gravity 23/23OC (73F) (unpigmented), max. 1.12 1.
21、12 1.12 1.10 Tensile strength, min, (5400) (4800) (4500) (3800) MPa (psi) 37 33 31 26 Deflection temperature at- 264 psi fiber stress, min: OC F 71 66 60 49 160 150 140 120 Flow temperature OC 145-155 145-155 145-155 135-14.5 Water absorption, max, percent weight gain 2 2 2 2 Hardness (Rockwell), mi
22、n, R Scale 100 100 100 95 P Weight loss on heating, max, percent 1.5 1.5 1.5 1.8 4 L Licensed by Information Handling ServicesMIL-P-63q62 73 W 79777Ob 0322375 b W MIL-P -63462 (AR) 3.3 Flow temperature. The flow temperature shall be tested when required by the procuring activity. and class of materi
23、al shall be within - + SOC (gol?) of that specified by the procuring activity. Flow temperature of a given type 3.4 Form. The form shall be as specified by the procuring activity. The.plastic granule size shall be uniform. maintained by screening the plastic granules through a screen with .187 inch
24、square openings. The plastic granules shall pass through a 0.1875- inch size screen. The uniformity shall be 3.5 Color and transparency. the material shall be as specified by the procuring activity. transparency shall be uniform. shall have its basic color-slightly amber. The color and degree of tra
25、nsparency of When color is not specified, the material Color and 3.6 Suitability for use with nitroglycerin or other explosives. When reasonable resistance to nitroglycerin or other explosives is required, the suitability for use with a particular explosive or propellant shall- be as specified by th
26、e procuring activity. nitroglycerin resistance, or resistance to other explosives, shall be as specified by the procuring activity. The method for determining 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the supplier
27、 is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract or order, the supplier may use his own or any other facilities suitable for the performance of the inspection require- ments specified herein, unless disapproved by t
28、he Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure that supplies and services conform to prescribed requirements. 4.2 Sampling for inspection and acceptance. Sampling for inspection s
29、hall be performed in accordance with the provisions set forth in MIL- STD-105, except where otherwise indicated. For purposes of sampling, an inspection lot for examination and tests shall consist of all material of the same type and class submitted for delivery at one time. 4.2.1 Inspection of mate
30、rials and components. In accordance with 4.1 above, the supplier is responsible for insuring that materials and components used were manufactured, tested and inspected in accordance with the requirements of referenced subsidiary specifications and standards to the extent specified or, if none, in ac
31、cordance with this specification. In the event of conflict, this specification will govern. A suppliers certificate of compliance with 3.1, shall be furnished. 4.2.2 Inspection of material. O Licensed by Information Handling Services- MIL-P-63q62 73 7777906 0322376 B W % MIL-P-63462 (AR) 4.2.2.1 Exa
32、mination of the material. Examination of the material shall be made in accordance with the list of defects inspection levels and acceptable quality levels (AQLs) set forth below. The lot size, for purpose of determining the sample size in accordance with MIL-STD- 105, shall be expressed in units of
33、45.4 kg (i00 pounds) for examination in 4.2.2.1.1, and in units of shipping containers for examination in 4.2.2.1.2. 4.2.2.1.1 Examination of the material for defects in appearance and workmanship. III shall be approximately .454 kg (one pound). The sample unit for this examination specified in Tabl
34、e Table III. Examination of the material for defects in appearance and workmanship Examine Defect Appearance and workmanship Form improper Form not uniform Color improper Transparency improper Not clean, presence of foreign material 4.2.2.1.2 Examination of the preparation for delivery requirements.
35、 An examination shall be made in accordance with Table IV, to determine that packaging, packing and marking comply with the requirements of section 5. The sample unit for this examination shall be one shipping container fully packed, selected just prior to the closing operation. Shipping containers
36、fully prepared for delivery shall be examined for closure defects. Table IV. Examination of preparation for delivery Examine Defect Packing Not level specified; not in accordance with contract requirements 6 o Licensed by Information Handling ServicesMIL-P-b3462 93 7779906 0322397 T MIL-P -63462 (AR
37、) Examine Defect Any nonconforming component, component missing, damaged or other defective affecting serviceability Inadequate application of components such as: incomplete closures of case liners; containflaps, loose or inadequate strapping, bulged or distorted container Quality of material Weight
38、 Markings Less than specified or indicated quantity. Gross weight exceeds specified requirements. interior or exterior markings omitted, illegible, incorrect, incomplete, or improper size, location, sequence, method of application, or not in accordance with contract requirements. 4.2.2.1.3 Inspectio
39、n levels and acceptable quality levels (AQLs) for The inspection levels for determining the sample size and examinations. the acceptable quality level (AQL) expressed as defects per 100 units shall be as follows: Examination Paragraph Inspection Level AQL 4.2.2.1.1 4.2.2.1.2 II s-2 2.5 2.5 4.2.3 Tes
40、ting. characteristics listed in Table I in accordance with the test methods specified herein. samplesize for testing, shall be expressed in units of 45.4 kg (100 pounds). all required specimens. The inspection level shall be S-1, with an acceptance number of O. The results for each test shall be the
41、 averaged results of the specimens. The molding material shall be tested for the applicable The lot size, for the purpose of determining the The sample unit shall consist of sufficient material to prepare 4.2.3.1 Classification of tests. All tests shall be classified as follows : (a) Lot acceptance
42、tests (see 4.2.3.2). (b) Periodic lot check tests (see 4.2.3.3). i 7 o Licensed by Information Handling ServicesMIL-P-63q62 73 7977706 O322398 3 MIL-P-63462 (AR) 4.2.3.2 Lot Acceptance tests. Lot acceptance tests shall be made on each lot of material and shall be the basis for acceptance or rejectio
43、n of the lot except when periodic lot check tests are required. acceptance tests shall be as specified in Table V. The lot Table V. Lot Acceptance Tests. Applicable to: Specific Tensile Deflection Flow Type Class gravity streng th temperature temp er ature I R1 R R R II 1 R1 R R R R1 Indicates test
44、is required. 4.2.3.3 Periodic lot check tests. Periodic lot check tests shall be made on the first lot of material furnished under this specification, and on any subsequent lot specified by the procuring activity. lot check tests shall consist of all the tests specified in Table II. When periodic lo
45、t check tests are made, they shall be included in the basis for acceptance or rejection of the lot. Periodic 4.3 Test Methods. 4.3.1 Specimen preparation and conditioning. Specimens shall be prepared by injection molding under conditions specified by the manufacturer. Unless otherwise specified, the
46、 dimensions of test specimens shall conform to that specified in the applicable test procedure. otherwise specified, test specimens shall be conditioned in accordance with procedure A of ASTM D .618 and tested at 23 5 2 (73.4 5 3.6F) and 45 - + 5 percent relative humidity. Unless 4.3.2 Specific grav
47、ity. Two specimens shall be tested in accordance with method A-1 of ASTM D 792, except for specimen size, which will be specified by procuring agency. 4.3.3 Tensile strength. Three specimens shall be tested in accordance with ASTM D 638, using Type I specimen and testing speed B. 4.3.4 Deflection te
48、mperature. Three specimens shall be conditioned in accordance with procedure B of ASTM D 618, and tested in accordance with ASTM D 648. to 0.128 inches). Specimen thickness shall be 3.18 mm to 3.35 mm (0.125 8 Licensed by Information Handling ServicesMIL-P-63462 73 7797906 0222377 3 MIL-P-6 34 62 (A
49、R) 4.3 Water absorption. Three specimens shall be conditioned in accordance with paragraph 5.1.1 of ASTM D 570. accordance with ASTM D 570, using the 24 hour immersion period, except for specimen size, which will be specified by procuring agency. Testing shall be in 4.3.6 Rockwell hardness. Two specimens shall be tested in accordance with procedure A of ASTM D 785 except for specimen size which will be specified by procuring agency. 4.3.7 Weight loss on heating. Three specimens shall be conditioned for a minimum of 48 hours over anhydrous calcium c
