1、i MIL-PRF-SLL7E = 999990b 202bOLL 3bT = pEiEq MIL-PRF-9117E 31 December 1996 SUPERSEDING 19 Apr 1971 MIL-A-9 1 17D PERFORMANCE SPECIFICATION ADHESIVE; SEALING, FOR AROMATIC FUEL CELLS AND GENERAL REPAIR This specification is approved for use by all Departments and Agencies of the Department of Defen
2、se. 1. SCOPE 1.1 Scope. This specification covers a one-part sealing adhesive for fuel cell repair work and for other general repairs where resistance to aromatic fuel is required. 2. APPLICABLE DOCUMENTS 2.1 Generd. The documents listed in this section are specified in sections 3 and 4 of this spec
3、ification. This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirem
4、ents documents cited in sections 3 and 4 of this specification, whether or not they are listed. 2.2 Government documeI distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-SL17E = 9999906 2026012 2Tb MIL-PRF-9 1 17E I 2.
5、2.1 mns and standards and handbooks . The following specifications standards, and handbooks form a part 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 St
6、andards (DoDISS) and supplement thereto, cited in the solicitation (see 6.2). SPECIFICATIONS FEDERAL TT-S-735 Standard Test Fluids; Hydrocarbon FED-STD-3 13 Material Safety Data, Transportation and Disposal Data for Hazardous Materials Furnished to Government Activities (Unless otherwise indicated,
7、copies of the above specifications, standards, and handbooks are available from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, Pennsylvania 191 11-5094.) 2.3 Non Governma Publications . The following documents form a part of this document to the extent specif
8、ied 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, the issues of documents not listed in the DoDISS are the issues of the documents cited in the solicitation (see
9、 6.2). SAE AMs 3217/1A TEST SLABS, ACRYLONITRILE, BUTADENE (NBR-H) Medium High Acrylonitrile, 65 - 75 (Application for copies should be addressed to SAE International, 400 Commonwealth Drive, Warrendale, PA 15096-0001 .) 2.4 Order of urecedence. In the event of a conflict between the text of this do
10、cument and the references cited herein, the 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 QP. When specified (see 6.2), a sample shall be subjected to first 3.1 Firs
11、t article inspecti article inspection in accordance with paragraph 4.2. 3.2 w. The material shall be a one-part adhesive suitable for bonding NBR-H surfaces such as those used in aircrafi fuel cells. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
12、MIL-PRF-SL37E = 7777706 2026033 132 W MIL-PRF-9 1 17E 3.3 Recvcled. recovered. o r environmental ly preferable mate rials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possible provided that the material meets or exceeds the operational and mainte
13、nance requirements, and promotes economically advantageous life cycle costs. 3.4 Bond stre na. 3.4.1 Mmimum bond strena . The minimum bond strength shall be 5.0 lb. after 4 hours of cure and 10.0 lb. after 24 hours of cure when prepared and tested in accordance with paragraph 4.4.3.2. 3.4.2 Bond str
14、enprt h upon e xt)osure to aro matic fuels. After exposure to aromatic fuels the bond strength shall be a minimum of 6 lb when prepared and tested in accordance with paragraph 4.4.3.3. 3.4.3 Bond strength afte r storage. The bond strength of cured specimens prepared using aged adhesive shall be at l
15、east 80 percent of the strength obtained for the 24 hour cure on the unaged adhesive (see 4.4.4.2). 3.5 Heat resistance . The adhesive, when applied and cured properly, shall be able to withstand exposure to elevated operating temperatures (1 58 “F)without failure of the adhesive bond under a shear
16、load of 2 pounds per square inch (see 4.4.5.2). 3.6 Storam . The adhesive, when aged, shall show no signs of gelling, or deterioration such as lumping, coagulation, or separation of adhesive components, and shall be readily brushable (see 4.4.4.1). 3.7 Photochcal reauirements . The manufacturer shal
17、l certiQ that materials used in the adhesive are non-photochemically reactive. 3.8 Fements . The adhesive shall not contain any EPA Class I ozone depleting substances or hazardous materials as defined in FED-STD-3 13, nor shall it contain any chemical listed in the current report of known carcinogen
18、s of the National Toxicology Program. 4. VERIFICATION 4.1 classification of instectiom . The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.2). b. Conformance inspection (see 4.3). 3 Provided by IHSNot for ResaleNo reproduction or networking pe
19、rmitted without license from IHS-,-,-MIL-PRF-LL7E Ob 2026034 O79 H MIL-PRF-9 1 17E 3.4.1 3.4.2 4.2 EK& article iaispectioii . First article testing shall be accomplished using two containers of adhesive (see 3.1). One container shall be used to prepare and test specimens in accordance with paragraph
20、s 4.4.3 and 4.4.5. The second container shall be used for storage stability testing in accordance with paragraph 4.4.4. Failure to pass any examination or test shall be cause for rejection of the first article. 4.4.3.2 4.4.3.3 4.3 Conformance inspection . Conformance testing shall be accomplished us
21、ing two containers of adhesive representative of each lot or order. Unless otherwise specified, a lot shall consist of all adhesive manufactured at one time fkom one batch, forming part of one contract or order, and submitted for inspection at the same time and place. One container shall be used to
22、prepare and test specimens in accordance with paragraphs 4.4.3 and 4.4.5. The second container will be used for storage stability testing, paragraph 4.4.4. Failure of any sample to pass any examination or test shall be cause for rejection of the lot or order. 3.4.3 3.5 3.6 4.4 Test methods. 4.4.4.2
23、4.4.5.2 4.4.4.1 Reaudents C ross-Reference Matrix I REQUIREMENT I VERTFICATION 4.4.1 during air cure shall be 77 k 2F, and 50 & 5 % relative humidity, CO nditions. Standard conditions during the make-up of samples and 4.4.2 Test ggxbmru . The standard NBR-H stock used for tests shall conform to AMs
24、321 7/1A or equivalent material as certified by the supplier. 4.4.3 Bond test h. Nine samples will be prepared using unaged adhesive as described in paragraph 4.4.3.1. Three will be strip-back tested per paragraph 4.4.3.2 after 4 hours cure time, three will be strip-back tested per paragraph 4.4.3.2
25、 after 24 hours cure time and three will be strip-back tested after immersion in aromatic fuel, paragraph 4.4.3.3. 4.4.3.1 Specimgnpeparation badfbr stre- test &. The standard NBR-H stock sheet shall be cut into 1 1/2 inch by 6 inch strips and washed with a suitable solvent. Buffing of the strips wi
26、ll not be allowed. After the strips have dried, apply two coats of adhesive with wait times per manufacturers recommendations. The adhesive shall be allowed to air cure as specified by the manufacturer, and then reactivated with the manufacturers recommended solvent. The reactivated surfaces shall b
27、e placed together within one 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-9117E Ob 2026035 TO5 MIL-PRF-9 1 17E minute and appropriate pressure applied in accordance with the manufacturers instructions. After the curing time specified for
28、 the particular test, 1 inch by 6 inch strips shall be cut from the center portion of the 1 1/2 inch by 6 inch strips and tested, 4.4.3.2 Strip -back test. Strips bonded in accordance with 3.4.1 to be tested shall be separated by hand at one end of the strip specimen for a distance sufficient to per
29、mit the attachment of the jaws of the testing machine. The fi-ee ends of the strips shall be clamped in the jaws of a pendulum type test machine and pulled apart at an angle of 180 degrees to each other at a jaw separation rate of 2 inches per minute. The first and last inch of the bonded section sh
30、all not be considered in the test. The average constant peak load of each specimen shall be recorded. If any sample falls below the minimum requirement the adhesive shall be rejected. 4.4.3.3 Exposure to aromat ic fuels . After preparing three samples as described in paragraph 4.4.3.1 with bond stre
31、ngth as specified in 3.4.2, the samples will be air cured for at least 24 hours at standard conditions before cutting to test size. The samples shall then be fully immersed in standard test fluid conforming to Type III of TT-S-735 for 7 days. After immersion, the strip-back test, 4.4.3.2, shall be c
32、onducted. If any sample tested falls below the minimum requirement the adhesive shall be rejected. 4.4.4 -stab ility. One unopened container of adhesive shall be placed in an oven, maintained at a temperature of 120 I2“ F, and allowed to age 4 weeks. The adhesive shall then be cooled to standard tem
33、perature and tested. 4.4.4.1 Visual emation . The adhesive shall conform to the requirements listed in paragraph 3.6 after aging. 4.4.4.2 Bond stre na. Contingent upon passing the visual examination of 4.4.4.1, three samples shall be prepared in accordance with paragraph 4.4.3.1 using aged adhesive
34、and tested for bond strength per paragraph 4.4.3.2. Any failure to meet the requirements of paragraph 3.4.3 shall constitute failure of the material. 4.4.5 Beat resistance. 4.4.5.1 Sample meparat ion. Three specimens shall be prepared for testing in the following manner. Using strips of the standard
35、 NBR-H stock, a lap joint shall be made in such a way that the area bonded is 1 square inch. The surfaces shall be cleaned with a suitable solvent prior to application of two coats of the adhesive with wait times per the manufacturers recommendations. The adhesive will be allowed to air cure as spec
36、ified by the manufacturer, and then reactivated per the manufacturers instructions. The bond shall be made within one minute after reactivating, appropriate pressure applied as specified by the manufacturer and air cured at least 18 hours at room temperature before testing. 5 Provided by IHSNot for
37、ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-7117E 0b 2026016 941 = MIL-PFW-9 1 17E 4.4.5.2 Beat reme test . The cured samples as specified in 3.5 shall be placed in a dry-air oven and aged for 24 hours at a temperature of 158 k 2” F. The bond shall then be subj
38、ected to a continuous dead-weight shear load of 2 pounds while maintained at the elevated temperature for another 24 hours. If any sample fails, the adhesive shall be rejected. 5. PACKAGING 5.1 -. For acquisition purposes, the packaging requirements shall be as specified in the contract or order (se
39、e 6.2). When actual packaging of materiel is to be performed by DoD personnel, these personnel need to contact the responsible packaging activity to ascertain requisite packaging requirements. Packaging requirements are maintained by the Inventory Control Points packaging activity within the Militar
40、y Department or Defense Agency, or within the Military Departments System Command. Packaging data retrieval is available fiom the managing Military Departments or Defense Agencys automated packaging files, CD-ROM products, or by contacting the responsible packaging activity. 6. NOTES (This section c
41、ontains information of a general or explanatory nature which may be helpful, but is not mandatory.) 6.1 Mended use. The adhesive is intended for use in fuel cell repair work, or for other general repair work, where aromatic fuel resistance is necessary. . 6.2 -irema . Acquisition documents should sp
42、eciQ the following: a. Title, number, and date of this specification. b. Issue of the DoDISS to be cited in the solicitation, and if required, the specific issue of individual document referenced. c. Packaging requirements (see 5.1). d. when a first article is required (see 3.1 and 4.2). e. Any addi
43、tional marking requirements (see 6.3). f, Material Safety Data Sheets, if required (see 6.4). 6.3 Marking. Unless specified otherwise, (see 6.2), containers and boxes shall be marked with appropriate precautionary statements in accordance with the manufacturers standard commercial practice. 6.4 me D
44、ata Shea . When specified (see 6.2) Material Safety Data Sheets will be provided in accordance with FED-STD-3 13. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-6.5 Sub-iect term (key word) listing Test Slabs Butadiene Medium HighAcry lonitrile NB
45、R-H 6.5 Changes from Drevious issw Marginal notations are not used in this revision to identi changes with respect to the previous issue due to the extent of the changes. Custodian: Air Force - 99 Navy - AS Army - MR Reviewer: Air Force - 11 Navy - SH, MC Army - AR, MD Preparing Activity: Air Force - 84 Agent: Air Force - 99 Project No. 8040-0542 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
