1、SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirelyvoluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefro
2、m, is the sole responsibility of the user.”SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions.QUESTIONS REGARDING THIS DOCUMENT: (724) 772-8512 FAX: (724) 776-0243TO PLACE A DOCUMENT
3、 ORDER; (724) 776-4970 FAX: (724) 776-0790SAE WEB ADDRESS http:/www.sae.orgCopyright 1992 Society of Automotive Engineers, Inc.All rights reserved. Printed in U.S.A.SURFACEVEHICLE400 Commonwealth Drive, Warrendale, PA 15096-0001RECOMMENDEDPRACTICEAn American National StandardJ2100ISSUEDAUG92Issued 1
4、992-08-18ACCELERATED ENVIRONMENTAL TESTING FOR BONDED AUTOMOTIVE ASSEMBLIESForewordThis Document has not changed other than to put it into the new SAE Technical Standards BoardFormat.1. ScopeThis SAE Recommended Practice defines conditions to which bonded assemblies can be exposed tosimulate environ
5、mental aging. These recommendations are generally based on existing Original EquipmentManufacturer requirements at this time. (Environmental specifications used for this proposal were fromGeneral Motors, Ford, and Chrysler.) The substrate type, dimension, and number are described by thestandard for
6、materials being tested and should include control specimens which receive no environmentalaging.2. References2.1 Applicable PublicationsThe following publications form a part of this specification to the extent specifiedherein.2.1.1 ASTM PUBLICATIONSAvailable from ASTM, 100 Barr Harbor Drive, West C
7、onshohocken, PA 19428-2959.ASTM B 117Method of Salt Spray (Fog) TestingASTM E 171Specification for Standard Atmospheres for Conditioning and Testing Materials3. EquipmentAll temperatures are 2 C and relative humidities (RH) are 5% unless otherwise indicated.3.1 Air circulating ovens capable of maint
8、aining 88 C and 204 C.3.2 Humidity cabinets (noncondensing preferred) capable of maintaining 38 C/95 to 100% RH and 60 C/85%RH.3.3 Salt spray cabinet per ASTM B 117.3.4 Low-temperature cabinet capable of maintaining 30 C.3.5 Deionized water bath capable of maintaining 60 C.SAE J2100 Issued AUG92-2-4
9、. TestingEvaluate after exposure to each environment and compare to control.4.1 ControlTest at 23 C, 50% RH.4.2 Low TemperatureTest at 30 C. Precondition at 30 C for a minimum of 2 h.4.3 High Temperature4.3.1 Test at 88 C. Precondition at 88 C a minimum of 15 min.4.3.2 Test at 204 C. Precondition at
10、 204 C a minimum of 15 min.4.4 Water ImmersionImmerse 14 days in deionized water at 60 C.4.4.1 WETRemove specimens from water bath, place in an air-tight container (such as a plastic bag), cool to23 C, 15 to 30 min, and test wet at 23 C.4.4.2 RECOVERYTest dry at 23 C, 50% RH, after 24 h conditioning
11、 at 23 C, 50% RH.4.5 Heat AgingAfter designated time at 88 C, test at 23 C, 50% RH after 30 min conditioning at 23 C,50% RH.4.5.1 4 weeks4.5.2 6 weeks4.5.3 8 weeks4.6 Humidity Aging4.6.1 After designated time at 38 C/100% RH, remove specimens from humidity chamber, place in air-tightcontainer (such
12、as a plastic bag), cool to 23 C, 15 to 30 min, and test wet at 23 C.4.6.1.1 4 weeks4.6.1.2 6 weeks4.6.1.3 8 weeks4.6.2 After designated time at 38 C/100% RH, test dry at 23 C, 50% RH, after 24 h conditioning at 23 C,50% RH.4.6.2.1 4 weeks4.6.2.2 6 weeks4.6.2.3 8 weeksSAE J2100 Issued AUG92-3-4.7 Sal
13、t SprayAfter designated time in ASTM B 117 salt spray cabinet, test at 23 C, 50% RH.4.7.1 250 h4.7.2 500 h4.7.3 1000 h4.8 Thermal Cycle4 h at 30 C4 h at 88 C16 h at 38 C/100% RHa. Run 10 cyclesb. No more than 10 min should elapse between each exposure. To maintain 24 h cycles, reduce humidityexposur
14、e time.c. If delay is incurred during thermal cycle, including Saturday and Sunday, storage of specimens inhumidity chamber is acceptable.d. Test at 23 C, 50% RH, after 24 h conditioning at 23 C, 50% RH.4.9 Corrosion Cycle2 h at 30 C2 h at 23 C/50% RH2 h at 70 C2 h salt spray, ASTM B 11716 h at 38 C
15、/100% RHa. Run 30 cyclesb. No more than 10 min should elapse between each exposure. To maintain 24 h cycles, reduce humidityexposure time.c. If delay is incurred during corrosion cycle, including Saturday and Sunday, storage of specimens inhumidity chamber is acceptable.d. Test at 23 C, 50% RH, afte
16、r 24 h conditioning at 23 C, 50% RH.4.10 Scab CycleMonday only:60 min at 60 C30 min at 30 C15 min immersion in 5% sodium chloride solution at 23 C75 min at 23 C/50% RH21 h at 60 C/85% RHTuesday thru Friday:15 min immersion in 5% sodium chloride solution at 23 C75 min at 23 C/50% RH22.5 h at 60 C/85%
17、 RHSaturday and Sunday:60 C/85% RHSAE J2100 Issued AUG92-4-a. Run 20 cycles (one cycleone 24 h weekday).b. At completion of last cycle, rinse assemblies in warm water.c. No more than 10 min should elapse between each exposure. To maintain 24 h cycles, reduce humidityexposure time.d. If delay is incu
18、rred during scab cycle, storage of specimens in humidity chamber is acceptable.e. Test at 23 C, 50% RH after 24 h conditioning at 23 C, 50% RH.5. Key WordsAccelerated aging, adhesive, bonded assemblies, corrosive, environment, salt spray, scab.PREPARED BY THE SAE PLASTICS BONDING SUBCOMMITTEE OF THE
19、SAE MATERIALS JOINING COMMITTEESAE J2100 Issued AUG92RationaleNot applicable.Relationship of SAE Standard to ISO StandardNot applicable.ApplicationThis SAE Recommended Practice defines conditions to which bonded assemblies can beexposed to simulate environmental aging. These recommendations are gene
20、rally based on existingOriginal Equipment Manufacturer requirements at this time. (Environmental specifications used for thisproposal were from General Motors, Ford, and Chrysler.) The substrate type, dimension, and numberare described by the standard for materials being tested and should include control specimens whichreceive no environmental aging.Reference SectionASTM B 117Method of Salt Spray (Fog) TestingASTM E 171Specification for Standard Atmospheres for Conditioning and Testing MaterialsDeveloped by the SAE Plastics Bonding SubcommitteeSponsored by the SAE Materials Joining Committee
