1、Designation: E 1800 08Standard Specification forAdhesive for Bonding Foam Cored Sandwich Panels (160FElevated Humidity Service), Type I Panels1This standard is issued under the fixed designation E 1800; the number immediately following the designation indicates the year oforiginal adoption or, in th
2、e case of revision, the year of last revision. 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
3、specification covers two-part paste adhesives forbonding foam core sandwich panels. The adhesive may be usedfor new production or depot maintenance. The adhesive shouldbe suitable for forming bonds that can withstand long termexposure to temperatures from 55 to 71C (67 to 160F) andalso withstand com
4、binations of stress, temperature, and humid-ity expected to be encountered in service. The adhesives shallbe used for bonding aluminum alloy facing to foam core,inserts, internal aluminum framing members, and other com-ponents of a foam cored sandwich panel.1.2 The values stated in SI units are to b
5、e regarded as thestandard where only SI units are given or where SI units aregiven first followed by inch-pound units; where inch-poundunits are given first followed by SI units, the inch-pound unitsare to be regarded as the standard.1.3 This standard does not purport to address all of thesafety con
6、cerns, if any, associated with its use. It is theresponsibility of the user of this 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:2B 209 Specification for Aluminum and A
7、luminum-AlloySheet and PlateD 1002 Test Method forApparent Shear Strength of Single-Lap-Joint Adhesively Bonded Metal Specimens by Ten-sion Loading (Metal-to-Metal)E 864 Practice for Surface Preparation of Aluminum Alloysto Be Adhesively Bonded in Honeycomb Shelter PanelsE 1749 Terminology Relating
8、to Rigid Wall RelocatableSheltersE 1793 Practice for Preparation of Aluminum Alloy forBonding in Foam and Beam Type Transportable Shelters2.2 Military Standard:3MIL-STD-202F Test Methods for Electronic and ElectricalComponent Parts2.3 Federal Specification:3QQ-A-250/11d Aluminum Alloy 6061 T6 Plate
9、and Sheet3. Terminology3.1 DefinitionsSee Terminology E 1749 for definitions ofterms used in this specification.3.2 Definitions of Terms Specific to This Standard:3.2.1 adhesive lifethe maximum time that an adhesive,when mixed in a prescribed quantity, can set at a designatedtemperature, after which
10、 the adhesive, when used to preparespecimens, will deliver the required properties.4. Requirements4.1 MaterialThe adhesive shall be a two-part thermoset-ting epoxy paste containing no asbestos and, when tested usingthe test methods described in Section 6, shall meet therequirements of Section 4. The
11、 adhesive shall not have adetrimental effect on the components being bonded over therange of temperatures at which the adhesive will be used.4.2 Working Characteristics:4.2.1 ApplicationThe adhesive shall be suitable for appli-cation to facings and foam core materials. The adhesive shallbe suitable
12、for spray application to faying surfaces.4.2.2 CuringThe time, temperature, and pressure used tocure the adhesive shall be within the range specified herein.4.2.2.1 Curing Time and TemperatureThe adhesive, whenmixed in accordance with the manufacturers instruction, shallmeet the requirements of this
13、 specification when cured at atemperature of not less than 52C (125F) for 4 h, or 63C(145F) for 60 min. The timing of the cure shall start when thepanel skins have reached the specified temperature. Thetemperature for the cure shall be fully attained within 2 h afterthe first application of the adhe
14、sive to the faying surface.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
15、cember 2008. Originallyapproved in 1996. Last previous edition approved in 2003 as E 1800 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
16、Summary 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
17、.4.2.2.2 Curing PressureSpecimens for testing under thisspecification shall be cured under a normal load of 0.05 60.007 MPa (8.0 6 0.5 psi). No more than 75 min at 25C(77F) shall elapse between the application of the adhesive tothe faying surface and the application of the pressure.4.2.3 Mix RatioTh
18、e mix ratio for the two parts of theadhesive shall be as defined by the manufacturer.4.3 Storage LifeThe storage life shall not exceed one yearfrom the date of manufacture, when the components of theadhesive shall be stored at a temperature between 10C (50F)and 42C (90F). The storage life of the two
19、 parts of theadhesive, from the date of shipment, when stored in airtightcontainers at 23 6 3C (73.4 6 5.4F), shall be at least 12months. The adhesive shall be considered to have met thisstorage life requirement if all the characteristics described in4.1 and 4.5 are met by the adhesive after the 12-
20、month storageperiod described above.4.4 Adhesive LifeThe adhesive life of one quart of themixed adhesive at 25C (77F) shall not be less than 160 min,at which time the adhesive shall meet the requirements of 4.5.4.5 Mechanical PropertiesThe minimum mechanicalproperties of the adhesives, when cured as
21、 specified, shall meetthe requirements of Table 1.5. Significance and Use5.1 This specification is intended to provide information onthe properties of adhesives, and the test methods required toevaluate adhesives to be used in the production bonding ofaluminum alloys to foam core materials for the m
22、anufacture oftactical shelters.6. Test Methods6.1 Qualification TestsFor qualification, the adhesiveshall be tested using the tests described in this section. Sheartests shall be performed in accordance with Test MethodD 1002 except that the length of the test coupon shall be 103.7mm (414 in.) and t
23、he thickness shall be 2.196 mm (0.090 in.).6.2 Preparation of Test SpecimensPrepare at least tenspecimens for each separate test. The metal to be bonded shallbe 6061 T6 (Federal Specification QQ-A-250/11d or Specifi-cation B 209) cleaned as specified in Practice E 864. Time,temperature, and pressure
24、 for curing the adhesive shall be asspecified in 5.3.2.1 and 5.3.2.2.6.3 Room Temperature ShearSubject specimens to a ten-sile shear test at a room temperature of 27 6 6C (80 6 10F).6.4 Low Temperature ShearTest specimens at 54 6 3C(65 6 5F). Bring the specimens to temperature as indicatedby a therm
25、ocouple at the bond area and stabilize for 10 6 1min just prior to test. Stabilize the chamber used to test thespecimens at the test temperature for 45 min prior to testing.6.5 High Temperature ShearTest specimens at93 + 0, 3C (200 + 0, 5F). Bring the specimens to tempera-ture as indicated by a ther
26、mocouple at the bond area andstabilize for 10 min just prior to test. Stabilize the chamberused to test the specimens at the test temperature for 45 minprior to testing.6.6 Humidity ExposureTest lap shear specimens at 71 63C (160 6 5F) after 2 weeks exposure to 100 % relativehumidity and 71 6 3C (16
27、0 6 5F). Bring the specimen totemperature as indicated by a thermocouple at the bond areaand stabilize for 10 min just prior to test. Stabilize the chamberused to test the specimens at temperature and humidity for 45min prior to testing. Start the test of each humidity exposuretest specimen no later
28、 than 30 min after removing it from thehumidity chamber.6.7 Salt Spray ExposureTest specimens at 27 6 6C (806 10F) after exposure to the salt spray test of MIL-STD-202Fusing a 20 % NaCl solution at 35 6 3C (95 6 5F). Stabilizethe specimens at the test temperature as indicated by athermocouple at the
29、 bond area for 10 min just prior to test.7. Inspection7.1 Qualification InspectionThe inspection requirementsspecified herein are classified as follows:7.1.1 Qualification TestUnless otherwise specified by thepurchaser, adhesives that have not passed the qualificationtests, or that have previously p
30、assed the tests but havesubsequently been modified in any manner, must be testedagainst this specification and shown to meet its requirements.7.1.1.1 Instruction SheetA dated, coded, and titled in-struction sheet that outlines instruction for use of the adhesiveon bonding metal facings to foam core
31、and metal componentsshall be supplied by the manufacturer. These instructions shallbe forwarded with the test report when requesting qualification.In addition, a copy of the instruction sheet shall accompanyeach shipment of the adhesive.7.1.2 Reevaluation ProcedureIn the event that two ormore test r
32、esults should fall below the minimum specified forany of the qualification tests, the submitted product shall beconsidered to have failed qualification testing. In this case, thelot along with two additional lots may be retested for that test.If all of these pass, the product will be considered as b
33、eingqualified.7.2 Quality Conformance InspectionThe number of testspecimens for conformance testing shall be five. The testprocedure, cure of the adhesive, and surface preparation shallbe in accordance with 6.2.8. Keywords8.1 160F/elevated humidity; adhesive; foam and beamTABLE 1 Physical Property R
34、equirementsTest RequirementRoom temperature, shear 1500 psi, min, 10.4 MPaLow temperature, shear 1500 psi, min, 10.4 MPaHigh temperature, shear 400 psi, min, 2.8 MPaHumidity exposure, shear, hot 500 psi, min, 3.4 MPaSalt spray exposure, shear, RT 1500 psi, min, 10.4 MPaE1800082ASTM International tak
35、es no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own re
36、sponsibility.This standard is subject to revision at any time by the responsible technical committee and must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addres
37、sed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at th
38、e address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).E1800083
