1、. a O O MIL-P-47077A 57 = 7777706 0072030 O W 1 INCH-POUND 1 MIL -P -47099A (MI ) 31 March 1989 SUPERSEDING 24 May 1974 MIL-P-47099( MI ) MILITARY SPECIFICATION POLYURETHANE FOAM, POLYETHER TYPE, RIGID, FOR PACKAGING AND ENCAPSULATION OF ELECTRONIC COMPONENTS This specification is approved for use b
2、y the US Army Missile Command, Department of the Army, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the requirements and tests for three types of two-component polyether type polyurethane foam, rigid, for packagi
3、ng and encapsulation of electronic components. 1.2 Classification. The polyether type polyurethane foam will be furnished in the following types, as characterized by their densities and acqui sit i on document (see 6.2) : Type I - 2 pounds per cubic foot (lb/ft3) Type II - 2 to 3 lb/ft3 Type III - 4
4、 lb/ft3 Benef i ci al comment s ( recommendat i on s , addi ti on s , del et i on s ) and any pertinent data which may be of use be addressed to: Commander, US Army Missile Command, ATTN: AMSMI-RD-SE-TD-ST, Redstone Arsenal, AL, 35898-5270 by using the self -addressed Standardization Document Improv
5、ement Proposal (DD Form 1426) at the end of this document or by letter in improving this document should AMSC N/A FSC 5970 DISTRIBUTION STATEMENT A. Approved for public release; distribution is un1 imi ted. , THIS DOCUMENT CONTAINS /o PAGES. 1 Licensed by Information Handling ServicesProvided by IHS
6、Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-_ _ - . - MIL-P-q7077A 57 7777906 00720311 2 = MIb-P-47099A(MI) 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 mons, standards _- and - handbooks. The fol 1 owing specifications. standards and handbooks form
7、a Dart of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those 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). SPECIFICATIONS FEDE
8、RAL PPP-B-591 - PPP-B-601 - PPP-B-621 - PPP-B-636 - PPP-T-45 - PPP-T-76 - M I L I TAR Y MIL-P-116 - MIL-F-83671 - STANDARDS MI L I TAR Y MIL-STD-129 - MIL-STD-810 - MIL-STD-1190 - Boxes , Shi ppi ng, Fi berboard, Wood-Cleated Boxes, Wood, Cleated-Plywood Boxes, Wood, Nailed and Lock-Corner Boxes , S
9、hi ppi ng, Fi berboard Tape, Gummed, Paper, Reinforced and Plain, for Seal i ng and Securing Tape, Packaging, Paper (For Carton Sealing) Preservation, Methods of Foam-In-Place Packaging Materials, General Specification for Marking for Shipment and Storage Envi ronmental Test Methods and Engineering
10、Gui del i nes Minimum Guide1 ines for Level C Preservation, Packing and Marking (Unless otherwise indicated, copies of federal and military specifications, standards, and handbooks are available from the Naval Publications and Forms Center, (ATTN: NPODS), 5801 Tabor Avenue, Philadelphia, PA 19120-50
11、99.) 2.2 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of the documents which are DOD adopted are those listed in the issue of the DODISS cited in the solicitation. Unless otherwise specified,
12、the issues of documents not listed in the DODISS are the issues of the documents cited in the solicitation (see 6.2). AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-Y7077A 57 = 7777706 007203
13、2 Y I a O O M I L -P -47099A (M I ) ASTM D149 - Dielectric Breakdown Vol tage and Dielectric Strength of Solid Electrical Insulating Materials at Commercial Power Frequencies, Standard Test Method for ASTM D150 - A-C Loss Characteristics and Permittivity (Dielectric Constant) of Solid Electrical Ins
14、ulating Materials, Standard Test Method for ASTM D732 Shear Strength of Plastics by Punch Tool, Standard Test Method for ASTM D1621 - Compressive Properties of Rigid Cellular Plastics, Standard Test Method for ASTM Di622 - Apparent Derisi ty of Rigid Ce1 1 u1 ar P1 asti cs, Standard Test Method for
15、ASTM D1623 - Tensile and Tensile Adhesion Properties of Rigid Cellular Plastics, Standard Test Method for (Application for copies should be addressed to the American Society for Testing and Materi al s, 1916 Race Street , Phi 1 adel phi a-, PA 19103. ) (Non-government standards and publications are
16、normally available from the These documents also organizations that prepare or distribute the documents. may be available in or through libraries or other informational services.) 2.3 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, t
17、he text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First article. When specified (see 6.2), a sample shall be subjected to first article inspection (see 6.3) in ac
18、cordance with 4.4. 3.2 Material. The polyurethane foam compound shall consist of a polyether type base resin and a separate is-ocyanate-type base resin and a separate isocyanate-type curing agent, so formulated as to produce, upon mixing, a polyurethane foam of a specified density certified by the m
19、anufacturer (see 6.2). 3.3 Storage life. The foam shall conform to the requirements of this specification after a storage period which shall be not less than 6 months for type I and III and 24 months for type II when stored in the original unopened container at a temperature between 16 and 32“ Celsi
20、us (C) 60 and 90“ Fahrenheit (F). The storage life shall be certified by the manufacturer (see 6.2). 3.4 Physical properties. The physical properties of the cured material shall be in accord.ance with table I (see 4.7). Provided by IHSNot for ResaleNo reproduction or networking permitted without lic
21、ense from IHS-,-,-MIL-P-47099A(MI ) TABLE I. Physical properties Type II 2 to 3 P 10 (3 25C f l“(77“F f 2“ 3 6 - 45 - sel f extingui shi ng None 10% 6 0% no fungus growth Type1 I 4 f 10% - 15 1.25 - 1.5 - - - - 3.5 Workmanshi . The polyurethane foam shall meet all requirements of this specid The mat
22、erials shall be clean and free of foreign matter, gel particles and other contaminants that would affect the intended purpose. The foam shall be of uniform quality, condition and appearance (see 4.5.3). 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in
23、the contract or purchase order. the contractor is responsible for the performance f all inspection requirements (examinations and tests) as specified herein. Except as otherwise specified in the contract or purchase order, the contractor may use his own or any other facilities suitable for the perfo
24、rmance 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 this specification where such inspections are deemed necessary to ensure supplies and services conform to prescribed requi re
25、ment s. 4.1.1 Responsibility for compliance. All items shall meet all reauirements of sections 3 and 5. The inspection set forth in this specification shall become a part of the contractors overall inspection system or quality program. The absence of any inspection requirements in the specification
26、shall not relieve the contractor- of the responsibility of ensuring that all products or supplies submitted to the Government for 4 - -=- I o O o Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-P-47099A 59 m 9999906 0072034 8 m Requi rement Inspe
27、ction paragraph Densi ty 3.4, table I Tensi 1 e st rength 3.4, table I Compres s i on strength 3.4, table I Shear strength 3.4, table I Dielectric constant 3.4, table I Di electric strength 3.4, table I Dimensi onal stabi 1 i ty 3.4, table I Flammability 3.4, table I Temperature resistance 3.4, tabl
28、e I Humidity growth 3.4, table I Fungus resi stance 3.4, table I Workmanshi p 3.5 MIL-P-47099A (M I ) Test paragraph 4.7.2 4.7.3 4.7.4 4.7.5 4.7.6 4.7.7 4.7.8 4.7.9 4.7.10 4.7.11 4.7.12 4.5.3 acceptance comply with all requirements of the contract. Sampling inspection, as part of manufacturing opera
29、tions, is an acceptable practice to ascertain conformance to requirements, however, this does not authorize submission of known defective material, either indicated or actual, nor does it commit the Government to accept defective materi al. 4.2 Classification of inspections. The inspection requireme
30、nts specified herein are classified as follows: a. First article inspection see (4.4). b. Quality conformance inspection (see 4.5). 4.3 Inspection conditions. Unless otherwise specified, al 1 inspections shall be conducted at a temperature of 16 to 32C (60 to 9O“F), relative humidity of ambient to 9
31、5 percent and barometric pressure of facility ground. 4.4 First article inspection. The first article inspection shall consist of the inspections and tests specified in table II in an order acceptable to the procuring activity. The first article sample shall consist of a one pint kit containing all
32、required ingredients of each type of material, manufactured under the same conditions as those proposed for subsequent production. Quantity production shall be withheld until the first article sample has been determined to be satisfactory by the procuring activity. 4.5 Quality conformance inspection
33、. Quality conformance inspections shall be as specified in table II. TABLE II. Quality conformance inspection. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- - PlIL-P-GO97A 57 m 9777706 0072035 T M I L -P -4 7 O9 9A (M I ) 4.5.2 Lot formation. A lo
34、t shall consist of a batch of material manufactured-nuous operation by the same process, by the same manufacturer, using the same batches of raw materials and submitted for 100 percent inspection at one time. 4.5.3 Examination. The polyether type polyurethane foam shall be examined for compliance wi
35、th the requirements specified in 3.2 through 3.5. ging. Except when commerci al packagi ng i s inspection of the preservation and interior package marking shall be in accordance with groups A and B quality conformance inspection requirements of MIL-P-116. The sampling and inspection of the packing f
36、or shipment and storage shall be in accordance with the quality assurance provisions of the applicable container specification shown in section 5. The inspection of marking for shipment and storage shall be in accordance with MIL-STD-129. The inspection of commercial packaging shall be as specified
37、in the contract (see 6.2). 4.7 -. preparation. - Utilizing the samples selected as est sicxs shall be prepared as specified in the applicable test method. Fiie specimens shali be prepared for tensile strength, compression strength, shear strength and dimensional stability tests. One specimen shall b
38、e prepared for the remainder of the tests. The foam compound used for preparing specimens shall be mixed and cured in accordance with the manufacturers recommendations. Specimens prepared for dimensional stability testing shall be four inches high and three inches in diameter. All other specimens sh
39、all be prepared in accordance with the applicable test method. No defects shall be allowed for dimensional stability or density tests. 4.7.2 Densit . The material shall be tested in accordance with ASTM D1622 for con -+ ormance to table I. 4.7.3 Tensile strength. The material shall be tested in acco
40、rdance with ASTM D1623 for conformance to table I. 4.7.4 Compression strength. The material shall be tested in accordance with ASTM D1621 for conformance to table I. 4.7.5 Shear strength. The material shall be tested in accordance with ASTM D732 for conformance to table I. 4.7.6 Dielectric constant.
41、 The material shall be tested in accordance with ASTM D150 for conformance to table I. 4.7.7 Dielectric strength. The material shall be tested in accordance with ASTM D149 for conformance to table I. 4.7.8 Dimensionalstabilitx. - The material shall be exposed to seven heat cycles in accordance with
42、figure 1 to determine conformance to table I. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-P-L17099A 57 m 9797706 0072036 1 m MIL-P-47099A(MI ) + 55 OF 7- 40% HUXIDI TY - AHBIEHT 7- (ROOHI LI- c O H TROi L E -65OF- lb4 I D FIGURE 1. Heat cycl
43、e for dimensional stability test. 4.7.9 Flammabilit . The material shall be tested in accordance with MIL-F-83671 + or conformance to table I. 4.7.10 Temperature resistance. The material shall be baked for a period which shall be not less than one hour at 86.9 f 3“C(190 f 5OF) for conformance to tab
44、le I. 4.7.11 Humidity growth. The material shall be tested in accordance with MIL-STD-810, Method 507, for conformance to table I. 4.7.12 Fungus resistance. The material shall be tested in accordance with MIL-STD-810, Method 508, for conformance to table I. 5. PACKAGING 5.1 Preservation. Preservatio
45、n shall be levels A, B or C (see 6.2). 5.1.1 Level A. 5.1.1.1 Unit packs. The polyether type polyurethane base resin and a separate isocyanate-type curing agent shall be unit packed in accordance with MIL-P-116, method IA-5. The polyether type polyurethane base resin and the isocyanate-type curing a
46、gent shall each be packed as one unit in a fiberboard box conforming to PPP-B-636. 5.1.1.2 Intermediate packs. Unit packs shall be placed in a close- fitting container conforming to PPP-B-636, type I, class 2 and closed as specified in 5.1.1.3. L Provided by IHSNot for ResaleNo reproduction or netwo
47、rking permitted without license from IHS-,-,- MIL-P-Y7077A 57 777770b 0072037 3 W MI L -P -4 7099A (M I ) 5.1.1.3 Closure. Containers conforming to PPP-B-636, type I, class 2 shall be closedsix strips of 2-inch tape conforming to PPP-T-76. These strips shall be applied using three on the top seams a
48、nd three on the bottom seams. When the bottom of the container is closed with staples or adhesive, only three pieces of tape on the top seams are required. The tape shall extend at least 3 inches onto each side panel. In instances where the end panel is less than 3 inches in depth, the tape shall ex
49、tend to the full depth. 5.1.2 Level 9. 5.1.2.1 Unit packs. Same as level A. 5.1.2.2 Intermediate packs. Unit packs shall be placed in close-fitting container conforming to PPP-B-636, type I, class 1 and closed as specified in 5.1.2.3. 5.1.2.3 Closure. Containers conforming to PPP-P-636, type I, class 1 shall be closmspecified in 5.1.1.3 using tape conforming to PPP-T-45, class 2 or 3. 5.1.3 Level C. Unit pac
