1、Designation:D118303(Reapproved 2011)Standard Practices forResistance of Adhesives to Cyclic Laboratory AgingConditions1This standard is issued under the fixed designation D1183;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year
2、 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 These practices cover the determinatio
3、n of the resistanceof adhesives to cyclic accelerated service conditions by expos-ing bonded specimens to conditions of high and low tempera-tures and high and low relative humidities.The extent ofdegradation is determined from changes in strength propertiesas a result of exposure to the test condit
4、ions(Note 1).It isrecognized that no accelerated procedure for degrading mate-rials correlates perfectly with actual service conditions,andthat no single or small group of laboratory test conditions willsimulate all actual service conditions.Consequently,care mustbe exercised in the interpretation a
5、nd use of data obtained inthis practice.The test condition,the number of cycles of thetest condition to be used,the particular strength property to beused to determine the extent of degradation,and whether testspecimens or test panels are to be used,is specified in thematerial specification.NOTE1The
6、se practices/conditions are intended for use with speci-mens described in the approvedASTM strength test methods for adhesivesas follows:Test Methods D897,D903,D906,D950,D1002,D1062,and MethodD1344.1.2 The values stated in SI units are to be regarded as thestandard.1.3 This standard does not purport
7、 to address all of thesafety concerns,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:2D897 Test
8、Method for Tensile Properties of Adhesive BondsD903 Test Method for Peel or Stripping Strength of Adhe-sive BondsD906 Test Method for Strength Properties of Adhesives inPlywood Type Construction in Shear by Tension LoadingD907 Terminology of AdhesivesD950 Test Method for Impact Strength of Adhesive
9、BondsD1002 Test Method for Apparent Shear Strength of Single-Lap-Joint Adhesively Bonded Metal Specimens by Ten-sion Loading(Metal-to-Metal)D1062 Test Method for Cleavage Strength of Metal-to-Metal Adhesive BondsD1141 Practice for the Preparation of Substitute OceanWaterD1344 Test Method for Testing
10、 Cross-Lap Specimens forTensile Properties of Adhesives(Withdrawn 1985)33.Terminology3.1 DefinitionsMany terms in these practices are definedin Terminology D907.4.Significance and Use4.1 This practice provides information on the resistance tocyclic laboratory aging.5.Apparatus5.1 Circulating Air Ove
11、ns,capable of being controlled at therequired temperatures.1These practices are under the jurisdiction of ASTM Committee D14 onAdhesives and are the direct responsibility of Subcommittee D14.80 on MetalBonding Adhesives.Current edition approved April 1,2011.Published April 2011.Originallyapproved in
12、 1951.Last previous edition approved in 2003 as D1183 03.DOI:10.1520/D1183-03R11.2For 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 Summary page onth
13、e ASTM website.3The last approved version of this historical standard is referenced onwww.astm.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.2 Rooms,Cabinets,or Desiccators,with means for con-trolling the relative humidity of the
14、air in them at the requiredvalues.NOTE2The following saturated salt solutions give 85 to 90%relativehumidity:(1)Potassium chloride at 23C(2)Manganous sulfate at 38.5C5.3 Vessels with Water,for immersion tests.5.4 Substitute Ocean Water,with the following composition(Note 3):CompoundConcentration,g/L
15、NaCl24.53MgCl26H2O11.11Na2SO44.09CaCl21.16KCl0.695NaHCO30.201KBr0.101H3BO30.027SrCl26H2O0.042NaF0.003NOTE3These requirements for composition of substitute ocean waterare identical with those prescribed for substitute ocean water,withoutheavy metals,in Specification D1141.5.5 Other Apparatus as requi
16、red by the ASTM method forthe particular strength property used to evaluate the extent ofdegradation.6.Test Specimens6.1 The number and type of test specimens meet therequirements of the particular strength method used to evaluatethe extent of degradation.Test panels may also be exposed tothose conditions,after which the specified test specimens shallbe cut from the panels.One set of specimens shall be testedwithout exposure to the accelerated service condition,andanother set after exposure.7.Co
