NAVY MMM-A-1931-1975 ADHESIVE EPOXY SILVER FILLED CONDUCTIVE《银芯传导环氧粘合剂》.pdf
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1、ADHESIVE, EPOXY, SILVER FILLED, CONDUCTIVE This specification was approved by the Commissioner, Federal Supply Service, General Services Administration, for the use of all Federal agencies. 1. SCOPE AND CLASSIFICATION 1.2 Classification. The adhesives shall be of the following types, as specified Ty
2、pe I - Volume resistivity 0.010 ohm/cm. Type II - Volume resistivity 0.003 ohm/cm. 2. APPLICABLE DOCUMENTS 2.1 The following documents, of the issues in effect on date of invitation for bids or request for proposal, form a part of this specification to the extent specified herein: Federal Specificat
3、ions: 3 QQ-A-250/5 - Aluminum Alloy Alclad 2024, Plate and Sheet. PPP-B-566 - Boxes., Folding, Paperboard. PPP-B-636 - Boxes, Shipping, Fiberboard. PPP-B-665 - Boxes, Paperboard, Metal Edged and Components. PPP-B-676 - Boxes, Setup. PPP-C-96 - Cans, Metal, 28 Gage and Lighter. I Fed. Std. No. 123 -
4、Marking for Shipment (Civil Agencies). Fed. Test Method Std. No. 141 - Paint, Varnish, Lacquer, and Related Materials; Fed. Test Method Std. No. 175 - Adhesives; Methods of Testing. Methods of Inspection, Sampling, and Testing. (Activities outside the Federal Government may obtain copies of Federal
5、Specifica- tions, Standards, and Handbooks as outlined under General Information in the Index of Federal Specifications- and Standards and at the prices indicated in the Index. The Index, which includes cumulative monthly supplements as issued, is for sale on a subscription basis by the Superintende
6、nt of Documents, U.S. Government Printing Office, Washington, DC 20402, (Singlecopies of this specification and other Federal Specifications required by activities outside the Federal Government for bidding purposes are available without charge from Business Service Centers at the General Services A
7、dministration Regional Offices in Boston, New YQrk, Washington, DC, Atlanta, Chicago, Kansas City, MO, Fort Worth, Denver, San Francisco, Los Angeles, and Seattle, WA. (Federal Government activities may obtain copies of Federal Specifications, Standards, and Handbooks and the Index of Federal Specif
8、ications and Standards from established distribution points in their agencies.) Military Standards: MIL-STD-105 - Sampling Procedures and Tables for Inspection by Attributes. MIL-STD-129 - Marking for Shipment and Storage. (Copies of hilitary Specifications and Standards required by suppliers in con
9、nection with specific procurement functions should be obtained from the procuring activity or as directed by the contracting officer.) FSC 8040 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- . _- H“-A-1931.80 W q79777i 000b900 S U MM“A-1931 2.2 Oth
10、er publicatas,. The following documents form a part of this specification to the extent specified herein. Unless a specific issue is identified, the issue in effect on date of invitation for bids or request for proposal shall apply. American Society for Testing anEaterials (ASTP) Standards: D 257 -
11、D-C Resistance or Conductance of Insulating Materials. D 1002 - Strength Properties of Adhesives in Shear by Tension Loading (Metal-to- D 2471 - Gel Time and Peak Exothermic Temperature of Reacting Thermosetting Resins. D 2651 Preparation of Metal Surfaces for Adhesive Bonding. . D 2730 - Sag Flow o
12、f Highly Viscous Resins. Metal) (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, PA 19103.) National Motor Freight Traffic Association, Inc. , Agen!-: National Motor Freight Classification. (Application for copies should b
13、e addressed to the American Trucking Associations, Inc.,-Tariff Order Section, 1616 P Street, N.W., Washington, DC 20036.) Uniform Classification Committee, Agent: Uniform Freight Classification. (Application for copies should be addressed to the Uniform Classification Committee, Room 1106, 222 Sout
14、h Riverside Plaza, Chicago, IL 60606.) 3. REQUIREMENTS 3.1 Material. The adhesive shall consist of two components, a base polymer and a curing agent, so compounded and formulated that when mixed in accordance with instruc- tions (see 3.5)., they shall produce an adhesive meeting the requirements of
15、this specification. metallic silver particles, but it shall contain no copper or other metals, and it shall contain no fillers or extenders. as directed- shall produce an adhesive meeting the requirements of this specification. The curing agent shall contain no metals, extenders, or fillers. 3.1.1 B
16、ase polymer. The base polyner shall be of the epoxy type and contain the 3.1.2 Curin a ent. The curing agent shall be of a suitable type, which when mixed 3.1.3 Thinner. If required for attainment of specified working characteristics (see 3.2), a thinner compatible with the mixed adhesive components
17、 shall be furnished. 3.1.4 Form. The base polymer shall be in paste form. The curing agent shall be a paste or liquid, and the thinner, if required, shall be a liquid: but the forms in all cases shall be such as to assure conformance with 3.2. 3.1.5 Color. The mixed adhesive shall have a characteris
18、tic silver color. 31.6 Solids. The complete adhesive system shall be free of volatile solvents, and the average nonvolatile matter in the adhesive system shall be not less than 99.5 percent when tested as specified in 4.4.2. 3.1.7 Corrosion. The adhesive shall be noncorrosive to metal surfaces when
19、tested as specified in 4.4.3. 3.2 Working characteristics. 3.2.1 5plication. The adhesive, when mixed according to the manufacturers instructions (see 3.51, shall be smooth, free of lumps, and of consistency suitable for application. The individual components shall.not settle, nor shall the mixed co
20、mponents separate or settle out during normal pot life. The adhesive shall be capable of being applied at room temperatures between 16 to 38OC (60 and 100OF) and at a relative humidity not greater than 75 percent. 2 - i Provided by IHSNot for ResaleNo reproduction or networking permitted without lic
21、ense from IHS-,-,-MM“A-1931 3.2.2 Application life (pot life). The application life of the adhesive, when mixed and ready for use at 23 5 l0C (73 5 2F) shall be at least 60 minutes for a 1-ounce mass when tested as specified in table III. 3.2.3 Sag flow. The mixed adhesive shall not exhibit sag flow
22、 of more than 0.5 inch when tested as specified in table III and 4.4.4. 3.2.4 Curing time. The adhesive shall attain the minimum strength requirements specified herein (see table I) when cured 24 hours at 23 5 l0C (73 5 2F). Full cure shall not exceed 7 days. 3.3 Mechanical properties. Mechanical an
23、d electrical properties of test Specimens, prepared and tested as specified in section 4, shall conform to the respective requirements listed in table I. TABLE I. Mechanical and electrical properties Type I Type II Tensile shear, psi (minimum) at 23 t 1C (73 t 2F) at 60 T 1C (140-t 2F at -55-t 1C (-
24、67-L 2F) Volume rezistivity, ohm/cm (maximum) 1200 1200 1200 o. O10 1200 1200 1200 O. 003 3.4 Storage stability. After the separate components are stored as specified in 4.4.5t the prepared adhesive (see 3.5) shall conform to the following requirements: a. All requirements of 3.2.1 and 3.2.3. b. App
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