ARMY A-A-50272-1997 ADHESIVES EPOXY《环氧树脂胶粘剂》.pdf

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1、 I 9999974 OLbLL44 47b I INCH-POUND A - A - 50272 28 October 1997 COMMERCIAL ITEM DESCRIPTION ADHESIVES, EPOXY The General Services Administration has authorized the use of this Commercial Item Description as a replacement for MIL-A47280 which is canceled. 1. Scope. This Commercial Item Description

2、(CID) covers two types of room temperature curing, epoxy adhesives. These epoxy adhesives are intended for bonding metal to metal, metal to plastic, plastic to plastic, and electronic components to boards or metal surfaces where excellent physical and electrical properties are required. 2. Classific

3、ation. Each adhesive shall consist of a two-component system containing an epoxy resin and an activator material 2.1 Types. The adhesives shall be of the following types as specified: Type I - High viscosity Type II - Low viscosity 2.2 Operatinq temperature rame. The mixed and cured epoxy adhesives

4、shall have a useful operating range of minus 60 degrees C (minus 76 degrees F) to plus 150 degrees C ( plus 302 degrees F). L Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any other data which may improve this document should be sent by letter to: Commander, US

5、 Army ARDEC, AMSTA-AR-EDE-S Picatinnv Arsenal, NJ 07806 -5000 AMSC - N/A FSC - 8040 Distribution Statement A Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A - A - 50272 3. Salient characterist

6、ics. 3.1 Uncured phvsical properties. 3.1.1 Shelf Life. The shelf life of the resin and activator, in unopened containers, shall be a minimum of one year from date of manufacture when stored at a temperature less than 27 degrees C (80.6 degrees F). 3.1.2 Pot life. The pot life of the adhesive, when

7、properly mixed, shall (at 25 degrees C (77 degrees F) be thirty minutes. 3.1.3 Cure Time. The cure time of the adhesive, when properly mixed, shall be as follows: at 25 degrees C (77 degrees F): at 65 degrees C (149 degrees F): at 100 degrees C (212 degrees F): 72 hours. 4 hours. 2 hours. 3.1.4 Visc

8、osity. The viscosity of the resin shall not exceed 11,000 centipoises (cps) for type I, and 600 cps for type II at 23 plus or minus 2 degrees C (73.5 plus or minus 3.6 degrees F) when tested in accordance with ASTM DI 084. A Brookield viscometer, model RVF (or equivalent equipment) shall be used (wi

9、th a number 4 spindle at 4 revolutions per minute (RPM) for Type I epoxy, and a number 2 spindle at 20 rpm for Type II epoxy). 3.1.5 ADpearana?. The adhesive, in a mixed condition, shall be translucent and colorless when visually inspected. 3.1.6 Contamination. The resin and activator shall be free

10、of dirt, foreign material, or other contaminants when visually inspected. 3.2 Cured phvsicalmechanical properties. Samples prepared and cured in accordance with the manufacturers directions, when tested at 25 degrees C (77 degrees F), shall have the properties listed below: 3.2.1 SDecific gravity. T

11、he specific gravity shall be 1.2, when measured in accordance with ASTM D792. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A - A - 50272 3.2.2 Tensile strenath. The tensile strength shall be 8,300 pounds per square inch, when measured in accorda

12、nce with ASTM D638. 3.2.3 Compressive strencith. The compressive strength shall be 14,l O0 pounds per square inch, when measured in accordance with ASTM D695. 3.2.4 Flexure strength. The flexure strength shall be 13,900 pounds per square inch, when measured in accordance with ASTM DI 184. 3.2.5 Tens

13、ile shear strenath. The tensile shear strength (aluminum test samples) shall be 1,600 pounds per square inch at room temperature, when measured in accordance with ASTM D1002. 3.2.6 Elongation. The elongation shall be 3.25 percent, when measured in accordance with ASTM D638. 3.2.7 Densitv. The densit

14、y shall be 0.043 pounds per cubic inch, when measured in accordance with ASTM D792. 3.2.8 Hardness. The hardness shall be Shore D 80 plus or minus 5, when measured in accordance with ASTM D2583. 3.3 Electrical Droperties. Samples prepared and cured in accordance with the manufacturers directions sha

15、ll have the properties listed below: 3.3.1 Dielectric constant. The dielectric constant shall be 4.3 at 1,000 cycles, when measured at 25 degrees C (77 degrees F) in accordance with ASTM DI 304. 3.3.2 Dielectric strenqth. The dielectric strength shall be 370 volts per Mil., when measured at 25 degre

16、es C (77 degrees F) in accordance with ASTM DI 304. 3.3.3 Volume resistivitv. When measured in accordance with ASTM D257, The volume resistivity shall be as follows: at 25 degrees C (77 degrees F) ohm - cm: 5.9 x IOl3 at 100 degrees C (212 degrees F) ohm - cm: 5.0 x IO9 3 Provided by IHSNot for Resa

17、leNo reproduction or networking permitted without license from IHS-,-,-A - A - 50272 4. Qualitv assurance provisions. 4. I Contractor certification. The contractor shall certify and maintain substantiating evidence that the product offered meets the salient characteristics of this Commercial Item De

18、scription and that the product conforms to the producers own drawings, specifications, standards, and quality assurance practices. Items with known defects shall not be submitted for Government acceptance. The Government reserves the right to require proof of such conformance prior to the first deli

19、very and thereafter as may be otherwise provided for under the provisions of the contract. 4.2 Responsibility for inspection. Unless Otherwise specified in the contract or purchase order, the supplier is responsible for the performance of all inspection requirements (examinations and tests) as speci

20、fied herein. Except as specified in the contract or purchase order, the supplier may use his own or any other facility 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 inspectio

21、ns set forth in the CID where such inspections are deemed necessary to assure supplies and/or services conform to the prescribed requirements. 4.3 Market acceptabilitv. The items offered must have been sold to the Government or commercial market and reflect demonstrated reliability and serviceabilit

22、y. Questions regarding market acceptability criteria should be directed to: Commander US Army ARDEC Picatinny Arsenal, NJ 07806-5000 Phone (201) 724 - 6652 AUN: AMSTA-AR-EDE-S FAX: (201) 724 - 5288 5. Preservation. Dackaaina, packina. labeling and marking. Preservation, packaging, packing, labeling,

23、 and marking shall be in accordance with ASTM D3951, or as specified in the contract or purchase order. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-iiH 9999974 0161148 O11 A - A - 50272 6. Notes. This section contains information of a general o

24、r explanatory nature that may be helpful, but is not mandatory unless otherwise specified in the contract or purchase order. 6.1 Source of documents. 6.1.1 ASTM standards are available from the American Society for Testing and Materials, I O0 Barr Harbor Drive, West Conshohocken, PA 19428. 6.2 Order

25、ina data. Acquisition documents shall specify the following: a. Title, number, and date of this CID. b. Type I or Type II epoxy. c. Special preservation, packaging, packing, labeling, or marking d. Quantity and size of containers. e. Precautionary handling marking requirements. req ui rements. 6.3 M

26、aterial Safety Data Sheets. Certain of the unreacted monomers and catalysts (components of the epoxy resin/ activator materials) are known to be able to cause some toxic effects, if no precautions are taken. Because of the range of possible effects among the chemicals involved, users should obtain M

27、aterial Safety Data Sheets from their suppliers to review specific precautions applicable to the systems involved. MILITARY INTEREST: Custodians: Arm y-AR Navy-SH PREPARING ACTIVITY: Army-AR Agent: None Project No.: 8040-0651 Review activities: Army-ER, ME Navy-AS 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-