1、1 flIL-P-g3038B 93 W 9997906 OLL7506 7 t MIL-P-4 m38B (MR) 3 October 1973 SUPERSEDING MIL- P-4 3D38A(MR) 10 May 1968 MILITARY SPECIFICATION PLASTIC MDLDING MATERIAL, POLYESTER, LOW-PRESSURE -TING, HIGH-TEMPERATURE RESISTANT 1. SCOPE 1.1 This specification covers one type of polyester resin suitable
2、for low pressure molding of strong-glass-laminated structures for use at high temperatures (see 6.1). 2. APPLICABLE DOCUMENTS 2.1 The following documents of the issue in effect on date of invitation for bids or request for proposal, form a part of this specification to the extent specified herein. S
3、PECIFICATIONS FEDERAL PPP-C-96 - Cans, Metal, 28Gage and Lighter PPP-D-705 - Drum, Metal Shipping, Steel (Over and Under 55 Gallon) PPP-D-729 - Drums, Shipping and Storage, Steel, 55-Gallon PPP-P-704 - Pail, Shipping, Steel (1 Through 12 Gallons) MILITARY MIL-C-9084 - Cloth, Glass, Finished, For Pol
4、yester Resin Laminates FSC 9330 THIS DOCUMENT CONTAINS 15 PAGES. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-wL-P-43038B (MR) STANDARDS MILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection by Mu-STD-129 - Marking for Shipment and
5、Storage MIL-STD-147 - Palletized and Containerized Unit Loads 40 Inch X 48 Attributes Inch Pallets, Skids, Runners, or Pallet Type Base (Copies of specifications, standards, drawings, and publications required by suppliers in connection with specific procurement functions should be obtained from the
6、 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. Unless otherwise indicated the issue in effect on date of invitation for bids or request for proposal shall apply. America
7、n Society for Testing and Materials (ASTM) Standards: D 70-70 D 618-61(1971)- Conditioning Plastics and Electrical Insulating Materials D 635-72 D 638-71a D 648-72 D 790-71 D 792-66(1970)- Specific Gravity and Density of Plastic by Displacement D 2583-67(1972)-Indentation Hardness of Plastics by Mea
8、ns of a Barco1 - Specific Gravity of Road Oils, Road Tars, Asphalt Cements, and Soft Tar Pitches for Testing - Flammability of Self-supporting Plastics - Tensile Properties of Plastics - Deflection Temperature of Plastics Under Flexural Load - Flexural Properties of Plastics Impress or (Application
9、for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, Pennsylvania 19103). National Motor Freight Traffic Association, Inc., Agent: National Motor Frelght Classification (Applications for copies should be addressed to the American Trucking
10、Associations, Inc., Tariff Order Section, 1616 P Street N. W., Washington, D. C. 20036.) 2. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Unifom- classification Committee, Agent: Uniform Freight Classification (Application for copies should be addr
11、essed to the Uniform Classification Committee, Room 1106, 222 South Riverside Plaza, Chicago, Illinois 60606) Inters tat e C ommerc e Commis si on 49 CFR 71-90 Interstate Commerce Commision Rules and Regulations for the Transporhation of Explosives and Other Dangerous Articles , I (The Interstate Co
12、mmerce Commision Regulations are now a part of the Code of Federal Regulations (latest cumulatine packet supplement) available from the Superintendent of Documents, Government Printing Office, Washington, D. C. “Code of Federal Regulations, 49 CFR 71-90 (Revised 1963)“). 20402. Orders for the above
13、publication should cite Manufacturing Chemists Association, Inc. Manual L-1 Guide to Precautionary Labeling of Hazardous Chemicals (Sixth Edition - 1961) (Application for copies should be addressed to the Manufacturing Chemists Association, Universal Building, 1825 Connecticut Avenue, Washington, D.
14、 C. 20009). 3.1 First article sample. When specified by the procuring activity (see 6.2), which has ken subjected to and has passed the first article sample inspection specified herein (see 4.2.2 and 4.2.3.2). the resin furnished under this specification shall be a product 3.2 Material. The resin sh
15、all be of the low pressure laminating type with modified polyester base and suitable cross linking agents, and shall be suitable for the production of laminated panels such as those prepared under 4.3.1.2. 3.3 Code Number. The sppplier shall designate each resin composition by a code number identify
16、ing the resin. name if desired. or in the manufacturing process shall necessitate use of a different code numbek and submission of the new product to preproduction inspection. The code number may include trade Any change in the kinds or proportions of components 3 Provided by IHSNot for ResaleNo rep
17、roduction or networking permitted without license from IHS-,-,-MIL-P-4303B 93 U 9797906 OLL9507 2 W 3.4 Physical and reactive properties (not applicable to laminate). The supplier shall furnish nominal values and tolerance limits for s ecific gravity, viscosity, and acid number of the liquid uncatal
18、yzed resin; maximum gel time and peak exotherm of the catalyzed resin; and the Barcol hardness and specific gravity of the cured unfilled resin. the methods of determination, when not specified herein, shall be included by the supplier in the instruction sheet (see 3.7) and shall be considered requi
19、rements of this specification for resin of the particular code number or designation concerned. In addition, unless otherwise specified (see 6.2), the follming values, or tolerances from the stated nominal values, shall be as shown below. These values and Property Value required . Specific gravity o
20、f uncatalysed resin resin, poises unfilled resin unfilled resin Viscosity of uncatalyzed Specific gravity of cured Barcol hardness of cured Nominal 2 0.05 5000 maximum Nominal 2 0.05 45 minimum 3.5 -Deflection temperature. The deflection temperature under load for the unfilled cured resin shall be n
21、ot less than 215OC (419“F), when specimens are prepared and tested in accordance with 4.3.8. 3.6 Property values of the laminate. cloth base plastic laminate, fabricated as specified in 4.3.1.2, shall conform to the values listed in table I. The property values of the glass 4 Provided by IHSNot for
22、ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-4303B 73 W 7779706 OLL75LO 7 W MIL-P -4303 8B (MR) , . Table I. Lengthwise property values of glass cloth base plastic laminatdl Property Value Tested after normal conditioning (see 4.3.2.2) 41,000 Tensile strength psi.
23、, min. Flexural strength., psi., min. 47,000 Barco1 hardness, min. 65 Flanrmabil ity SE (max)L/ Tested after three heat cycles (see 4.3.2.3) Tensile strength, psi., min. 35,000 Tested after one heat cycle (see 4.3.2.3) Flexural strength, 44,000 psi., min. LILengthwise direction of test specimen is p
24、arallel to warp direction of the glass fabric. 2/ - SE = Self Extinguishing. The specific gravity and percent resin content of the glass cloth base plastic laminate, including method of test, shall be supplied to the procuring activity. I 5 o Provided by IHSNot for ResaleNo reproduction or networkin
25、g permitted without license from IHS-,-,-MIL-P-q303B 73 m 7779706 OZL75LL O MIL-P-43038B (MR) 3.7 Instruction sheet. At the time of submission of the preproduction sample, the supplier shall provide the procuring agency with instruction sheets (see 6.2). number shall be accompanied by copies of the
26、approved instruction sheet (see 4.2.2.1.2 and 6.2). Each subsequent shipment of resin of the same code Instruction sheets shall contain the following: (a) The number, title, and date of thts specification, (b) Resin code number (see 3.3). (c) Limiting values required in 3.4 for the uncatalysed resin
27、, and cured unfilled resin. procedures when not specified herein. Also the applicable test (d) Maximum usable storage life of the uncatalysed resin, with recommeded storage conditions, and pot life of the catalysed resin. (e) Recommended mixing and impregnating procedures, including recommended type
28、s, percentages, and manner of utilization of catalysts. Recommended method of preparing test specimens of unfilled cured resin. (f) (g) Recommended finishes to be used on glass fabric. (h) Range of time, temperature, and pressure cycles recommended to affect the cure for laminates. Any other pertine
29、nt information, at the suppliers option, on storage and handling. (i) 3.8 Workmanship. The material specified herein shall be homogeneous and free of contamination as determined by visual examination. material shall be uniform from container to container as determined by visual examination. The 4. Q
30、UALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection requirements as specified herein. specified in the contract or order, the supplier may use his own or any oth
31、er facilities suitable for the performance of the inspection requirements specified herein, unless disapproved by the 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 supplies and serv
32、ices conform to prescribed requirements. Except as otherwise 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-i3038B 93 W 9999906 OLL9512 2 W 4.2 Sampling for inspection and acceptance. Sampling for inspection and acceptance shall be performed
33、 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 submitted for delivery at one time. 4.2.1 Inspection of materials of components. In accordance with 4.1,
34、the supplier is responsible for insuring that materials and components used were manufactured, tested, and inspected in accordance with the require- ments of referenced subsidiary specifications and standards to the extent specified, or if none, in accordance with this specification .-. In the event
35、 of conflict, this specification shall govern. A suppliers certificate of compliance with 3.1, 3.2, and 3.3 shall be furnished. 4.2.2 Inspection of material. 4.2.2.1 Examination of the material. Examination of the material shall be made in accordance with the list of defects, inspection levels and a
36、cceptable 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 100 pounds for examination in 4.2.2.1.1, and in units of shipping containers for examination in 4.2.2.1.3. 4.2.2.1.1 Examination of
37、 the material for defects in appearance and workmanship. The sample unit for this examination, specified in table II, shall be approximately one pound. Table II. Examination of the material for defects in appearance and workmanship Examine Defect Appearance and workmanship Material in each container
38、 not homogeneous, and not free of contaminat ion. Not uniform from container to container. 4.2.2.1.2 Examination of instruction sheet. Instruction sheets must be furnished in accordance with 3.7, and must be acceptable to the procuring activity as part of the first article sample requirements (see 3
39、.1 and 3.7). One sheet shall be examined as specified in table III. I 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-430386 73 m 7977706 OLL7513 4 W MIL -P-43038B (3dR) Table III. Examination of instruction sheet Examine Defect Instruction s
40、heet Not prepared in accordance with all requirements of 3.7. Specified test procedures not acceptable. 4.2.2.1.3 Examination of the preparation for delivery requirements (not applicable to preproduction inspection). made in accordance with table IV to determine that packaging, packing and marking c
41、omply with section 5 requirements. examination shall be one shipping container fully packed, selected just prior to the closing operation. Shipping containers fully prepared for delivery shall be examined for closure defects. An examination shall be The sample unit for this I 8 Provided by IHSNot fo
42、r ResaleNo reproduction or networking permitted without license from IHS-,-,-_ MIL-P-LI3038B 93 m 797790b OLL9514 b = I Table IV. Examination of preparation for .delivery Examine Defect Packing Not level specified; not in accordance with contract requirements. Resin containers improperly closed. Qua
43、ntity of material Weight Markings Any nonconforming canponent , component missing, damaged or otherwise defective affecting serviceability. Inadequate application of components such as: incomplete closures of . case liners; container flaps,loose or inadequate strappings, bulged or distorted containe
44、rs. Less than specified or indicated quantity. Gross weight exceeds specified requirement s. Interior or exterior markings omitted, illegible, incorrect, incomplete, of improper size, location, sequence, method of application, or not in accordance with contract requirements. 4.2.2.1.4 Inspection lev
45、els and acceptable quality levels (AQLs) for examinations. The inspection levels for determining the sample size and 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 II 2.5 4.2.2.1.2 s -2 2.5 4.2.2.1.3 s -
46、2 2.5 9 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-P-q303B 73 W 9779706 0337535 9 MIL-P-43038B (MR) 4.2.3 Testing. The physical and reactive properties specified in 3.4 shall be tested in accordance with test methods specified herein. Plast
47、ic laminates shall be prepared from the material (see 4.3.1.2), and shall be tested for the characteristics listed in table I in accordance with the test methods specified herein. The lot size, for the purpose of determining the sample size for testing shall be expressed in units of 100 pounds of ma
48、terial. material to prepare all required specimens. be S-1 with an acceptance number of O. be the averaged results of the specimens. The sample unit shall consist of sufficient The inspection level ahall The results for each test shall 4.2.3.1 Classification of tests. All tests shall be classified a
49、s follows: (a) Tests for first article sample (see 4.2.3.2). (b) Tests for lot acceptance (see 4.2.3.3). 4.2.3.2 First article sample tests (see 3.1). The first article sample tests shall consist of all test specified herein (see section3). 4.2.3.3 Lot acceptance tests. Lot acceptance tests shall be made on each lot of material and shall be the basis for acceptance or rejection of the lot, af
