1、Designation: E 865 08Standard Specification forStructural Film Adhesives for Honeycomb Sandwich Panels1This standard is issued under the fixed designation E 865; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of last revi
2、sion. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.This standard has been approved for use by agencies of the Department of Defense.1. Scope1.1 This specification covers film adhesives for b
3、onding ofhoneycomb sandwich panels. The adhesives are used for newproduction or depot repair. The adhesives shall be suitable forforming bonds that can withstand long exposures to tempera-tures from 55 to 93C (67 to 200F) and also withstand thecombinations of stress, temperature, and relative humidi
4、tyexpected to be encountered in service. The adhesives shall beused for bonding aluminum alloy facing to nonmetallic core,edge attachments, and other components of a sandwich panel.1.2 The values stated in SI units are to be regarded as thestandard where only SI units are given or where SI units are
5、given first followed by inch-pound units; where inch-poundunits are given first followed by SI units, the inch-pound unitsare to regarded as the standard.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of t
6、his standard to establish appro-priate safety and health practices and determine the applica-bility of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2B117 Practice for Operating Salt Spray (Fog) ApparatusB 209 Specification for Aluminum and Aluminum-AlloySheet and Pla
7、teC 297/C 297M Test Method for Flatwise Tensile Strengthof Sandwich ConstructionsD 1002 Test Method forApparent Shear Strength of Single-Lap-Joint Adhesively Bonded Metal Specimens by Ten-sion Loading (Metal-to-Metal)D 1781 Test Method for Climbing Drum Peel forAdhesivesD 2919 Test Method for Determ
8、ining Durability of Adhe-sive Joints Stressed in Shear by Tension LoadingD 3167 Test Method for Floating Roller Peel Resistance ofAdhesivesE 864 Practice for Surface Preparation ofAluminumAlloysto Be Adhesively Bonded in Honeycomb Shelter PanelsE 866 Specification for Corrosion-Inhibiting AdhesivePr
9、imer for Aluminum Alloys to Be Adhesively Bonded inHoneycomb Shelter PanelsE 874 Practice forAdhesive Bonding ofAluminum Facingsto Nonmetallic Honeycomb Core for Shelter PanelsE 1091 Specification for Nonmetallic Honeycomb Core forUse in Shelter PanelsE 1826 Specification for Low Volatile Organic Co
10、mpound(VOC) Corrosion-Inhibiting Adhesive Primer for Alumi-num Alloys to Be Adhesively Bonded2.2 Federal Specifications:3QQ-A-250/8d Aluminum Alloy 5052H34, Plate and SheetQQ-A-250/11d Aluminum Alloy 6061T6, Plate and SheetNOTE 1Copies of specifications, standards, drawings, and publica-tions requir
11、ed by suppliers in connection with specific purchases shall beobtained from the purchaser or as directed by his contracting officer.3. Ordering Information3.1 Procurement DocumentsPurchasers shall select anyof the desired options offered herein and the procurementdocuments shall specify the followin
12、g:3.1.1 Title, number, and date of this specification;3.1.2 Adhesive type and code number;3.1.3 Amounts and unit quantities of adhesives required;3.1.4 Length, width, and film weight of adhesive;3.1.5 Curing conditions;3.1.6 Level of packaging and packing required; and3.1.7 Whether or not qualificat
13、ion (see 3.2) is necessary.1This specification is under the jurisdiction of ASTM Committee E06 onPerformance of Buildings and is the direct responsibility of Subcommittee E06.53on Materials and Processes for Durable Rigidwall Relocatable Structures.Current edition approved Nov. 1, 2008. Published De
14、cember 2008. Originallyapproved in 1982. Last previous edition approved in 2003 as E 865 03.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document S
15、ummary page onthe ASTM website.3Available from Standardization Documents Order Desk, DODSSP, Bldg. 4,Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http:/www.dodssp.daps.mil.1Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
16、3.2 QualificationIn the case of adhesives for which thepurchaser requires qualification, comprehensive testing in ac-cordance with Section 5 shall be performed and documented ina test report.4. Requirements4.1 MaterialThe adhesive shall be thermosetting and,when tested using the tests described in S
17、ection 5, shall meetthe strength and durability requirements of this specification.The adhesive shall not have a deleterious effect on the metalsurfaces being bonded over the range of temperatures at whichthe adhesives will be used.4.2 Form and Film WeightThe adhesive shall be filmform and shall con
18、sist either entirely of adhesive or of a carrierimpregnated with adhesive. The film weight shall be within therange specified in Table 1.4.3 AppearanceThe adhesive film shall be uniform inappearance. It shall be of a uniform coating that is free ofstreaks and color variations.4.4 QualificationAt the
19、 option of the purchaser, the ad-hesive may be required to be a product (see 6.3) for listing onthe applicable qualified products list at the time set for openingof bids. The qualification shall only apply to the formulation onwhich qualification tests have been made. Any changes by themanufacturer,
20、 such as the adding of fillers, changing the carrier,changing the method of manufacture, or changing the mass perunit area, shall be cause for designating the adhesive as a newproduct. The new product shall be given a new code numberand shall not be approved until it has been shown to meet therequir
21、ements of the specification.4.5 Working Characteristics:4.5.1 ApplicationThe adhesive shall be suitable for appli-cation to metal facings and core materials in accordance withthe manufacturers instructions at temperatures between 18 and30C (65 and 85F) and at relative humidities of up to 50 %.4.5.2
22、CuringThe time, temperature, and pressure used tocure the adhesive shall be within the range specified herein.4.5.2.1 Curing Time and TemperatureThe adhesive shallmeet the requirements of this specification when cured for notlonger than1hatabond line temperature not exceeding 145C(293F).4.5.2.2 Curi
23、ng PressureIn the preparation of specimensfabricated for qualification, the pressure required for curing theadhesive shall not be less than 140 kPa (20 psi) nor more than350 kPa (50 psi).4.6 Storage LifeThe adhesive manufacturer shall deter-mine the maximum temperature and the storage period at this
24、temperature (from date of manufacture) for which the adhe-sive, when stored in airtight containers or wrapped in suitablevapor barriers, will retain its ability to meet the strengthrequirements specified in Table 1. These storage conditionsshall be stated in the instruction sheet (see 6.3.1.1).4.7 M
25、echanical PropertiesThe average mechanical prop-erties of the adhesive shall meet the requirements of Table 1.5. Test Methods5.1 Qualification TestsFor qualification, the adhesiveshall be tested using the tests described in this section. Sheartests shall be performed in accordance with Test MethodD
26、1002.5.2 Preparation of Test SpecimensPrepare at least tenspecimens for each separate test except as otherwise specifiedin the individual test methods. The metal bonded shall be6061T6 or 5052H34 aluminum alloy (Federal SpecificationQQ-A-250/11d or QQ-A-250/8d, respectively, or SpecificationB 209) cl
27、eaned as described in Practice E 864 and at thepurchasers option, primed in accordance with SpecificationE 866 or Specification E 1826. Time and temperature of curingof the adhesive shall be in accordance with the adhesivemanufacturers most recent recommendation. Test panels orspecimens, or both, ot
28、her than the breakaway type shall be cutin such a manner that minimum vibration or heat is generatedduring the cutting operation.5.3 Normal-Temperature Lap ShearSubject specimens toa lap shear test at normal temperature 25 6 3C (77 6 5F).5.4 High-Temperature Lap ShearTest specimens at 60 63C (140 6
29、5F) and 93 6 3C (200 6 5F). Bring thespecimen to temperature as indicated by a thermocouple at thebond area and stabilize for 10 min just prior to test. Stabilizethe chamber used to test the specimens at the test temperaturefor 45 min prior to testing.5.5 Low-Temperature Lap ShearTest specimens at 5
30、5 63C (67 6 5F). Bring the specimen to temperature asindicated by a thermocouple at the bond area and stabilize for10 min just prior to test. Stabilize the chamber used to test thespecimens at the test temperature for 45 min prior to testing.5.6 Humidity Exposure Lap ShearTest lap shear speci-mens a
31、t 93 6 3C (200 6 5F) after 2 weeks exposure to 956 5 % relative humidity and 93 6 3C (200 6 5F). Bring thespecimen to temperature as indicated by a thermocouple at thebond area and test within 2 min. The test chamber used to testthe specimens shall be stabilized at the test temperature for atleast 4
32、5 min prior to testing. Start the test of each humidityTABLE 1 Physical Requirements for the Film AdhesiveTest RequirementAFilm weight, kg/m2 (lb/ft2) 0.405 to 0.480 (0.083 to0.100)Normal-temperature lap shear, MPa (psi) 20 (2903)High-temperature lap shear, MPa (psi)60C (140F) 20 (2903)93C (199F) 13
33、 (1888)Low-temperature lap shear, MPa (psi) 20 (2903)Humidity exposure lap shear, MPa (psi) 5 (723)Salt spray exposure lap shear, MPa (psi) 16 (2322)Normal-temperature floating roller peel, N/m(lbf/in.)4400 (25.1)Low-temperature floating roller peel, N/m (lbf/in.) 2625 (15.0)Dead load stress durabil
34、ity, h:40 % of 60C (140F) failure stress 4030 % of 60C (140F) failure stress 54020 % of 60C (140F) failure stress 1500Normal-temperature climbing drum peel, Nm/m(lbfin./in.)36 (8)High-temperature climbing drum peel, Nm/m(lbfin./in.)18 (4)Flatwise tensile strength, MPa (psi) 2.1 (306)Storage life tes
35、tBAExcept for film weight, values stated are the minimal to be met by the averagesof the results for the specimens tested.BThe storage life at the maximum recommended temperature and under therecommended storage conditions shall be stated in the instructions.E865082exposure lap shear test specimen n
36、o later than 30 min afterremoving it from the humidity chamber.5.7 Salt Spray Exposure Lap ShearTest specimens inaccordance with the salt spray test of Practice B117 for 2weeks exposure to salt spray using 5 % NaCl solution at 35 63C (95 6 5F).5.8 Normal-Temperature Floating Roller PeelTest speci-me
37、ns at normal temperature 25 6 3C (77 6 5F) inaccordance with Test Method D 3167.5.9 Low-Temperature Floating Roller PeelTest eachspecimen at 55 6 3C (67 6 5F). Bring the specimen totemperature as indicated by a thermocouple at the bond areaand stabilize for 10 min just prior to testing. Stabilize th
38、echamber used to test the specimen at the test temperature for 45min prior to testing.5.10 Dead Load Stress DurabilityTest the specimens inaccordance with Test Method D 2919. Maintain the conditionsof the test chamber at 60 6 3C (140 6 5F) and 95 6 5%relative humidity.5.11 Normal-Temperature Climbin
39、g Drum PeelTest fivespecimens (constructed using a 50-mm (2-in.) deep core, TypeIV of Specification E 1091, and 0.5-mm (0.02-in.) skins) in the“L” direction for peel strength in accordance with Test MethodD 1781 using the load correction described in 7.1.2 of thatmethod. Make an autographic recordin
40、g of force versus headmovement. Test the specimen at normal temperature 25 6 3C(77 6 5F) and at a relative humidity of 50 6 10 %.5.12 High-Temperature Climbing Drum PeelTest fivespecimens (constructed using a 50-mm (2-in.) deep core, TypeIV of Specification E 1091, and 0.5-mm (0.02-in.) skins) inacc
41、ordance with 5.11, except stabilize the test temperature at93 6 3C (200 6 5F) for 10 min as determined by athermocouple adjacent to the specimen skin. The test chamberused to test the specimens shall be stabilized at the testtemperature for at least 45 min prior to testing.5.13 Flatwise Tensile Stre
42、ngthTest five specimens (con-structed using 50-mm (2-in.) deep core, Type IV of Specifica-tion E 1091, and 0.50-mm (0.02-in.) thick skins) in accordancewith Test Method C 297/C 297M, except that 76.2 by 76.2-mm(3 by 3-in.) test specimens shall be used with corresponding76.2 by 76.2-mm (3 by 3-in.) t
43、ension blocks. Test the speci-mens at normal temperature 25 6 3C (77 6 5F) and at arelative humidity of 50 6 10 %.NOTE 2Core may be dried prior to preparation of test specimen.6. Inspection6.1 Responsibility for InspectionUnless otherwise speci-fied in the contract or purchase order, the supplier is
44、 respon-sible for the performance of all inspection requirements asspecified herein. Except as otherwise specified in the contractor order, the supplier may use his own or any other facilitiessuitable for the performance of inspection requirements speci-fied herein unless disapproved by the purchase
45、r. The purchaserhas the right to perform any of the inspections set forth in thespecification where such inspections are deemed necessary toassure compliance with the requirements.6.2 Classification of InspectionsThe inspection require-ments specified herein are classified as follows:6.2.1 Qualifica
46、tion inspection (see 6.3), and6.2.2 Quality conformance inspection (see 6.4).6.3 Qualification Inspection:6.3.1 Qualification TestUnless otherwise specified by thepurchaser (see 3.2), adhesives that have not passed the quali-fication tests, or that have previously passed the tests but havesubsequent
47、ly been modified in any manner, must be testedagainst this specification and shown to meet its requirements.6.3.1.1 Instruction SheetA dated, coded, and titled in-struction sheet that outlines instructions for use of the adhesivein bonding metal facings to paper cores and metal componentsshall be su
48、pplied by the manufacturer. These instructions shallbe forwarded with the test report (see 6.3.3) when requestingqualification. In addition, a copy of the instruction sheet shallaccompany each shipment of the adhesive.At the option of thepurchaser, qualification tests may be repeated at any time onm
49、aterial previously found satisfactory.6.3.2 Periodic ReevaluationAreevaluation of an adhesiveshall be made at 5-year intervals after the date of notification ofthe products acceptability for qualification.6.3.2.1 Reevaluation ProcedureIt shall be the responsibil-ity of the supplier of the qualified adhesive to furnish to thepurchaser, at 5-year intervals, the data necessary to confirm thecontinued conformity of the product to the qualification re-quirements. These data shall be complete test re
