ASTM_C_1294_-_15.pdf

Designation:C129415Standard Test Method forCompatibility of Insulating Glass Edge Sealants with Liquid-Applied Glazing Materials1This standard is issued under the fixed designation C1294;the number immediately following the designation indicates the year oforiginal adoption or,in the 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.1.Scope1.1 This test method covers a laboratory procedure forquantitatively measuring the compatibility of liquid-appliedglazing materials with an insulating glass unit edge sealant.Compatibility is determined by measuring the changes in theinsulating glass edge sealant adhesive and cohesive properties.Hereinafter insulating glass is referred to as IG.1.2 This test method does not address the issue of theintegrity of the hermetic seal or changes to the vision area in anIG unit.Such factors as possible unit fogging or primarysealant reaction in a dual-seal system due to volatile compo-nents permeating the IG sealant are not considered in this testmethod.1.3 The committee with jurisdiction over this standard is notaware of any comparable standards published by other orga-nizations.1.4 This standard does not purport 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:2C717 Terminology of Building Seals and SealantsC1265 Test Method for Determining the Tensile Propertiesof an Insulating Glass Edge Seal for Structural GlazingApplications3.Terminology3.1 DefinitionsRefer to Terminology C717 for definitionsof the following terms:adhesive failure,cohesive failure,compatibility,compound,elongation,glazing,seal,sealant,standard conditions,and substrate.4.Summary of Test Method4.1 This test method includes the measurement of tensileforce,elongation,and percent cohesive or adhesive failure andobservations of the specimens general physical appearanceand observation of elongation.4.2 Test specimens are exposed to 70C(158F)heat forfour weeks while contacting the liquid-applied glazing materialbeing evaluated.4.2.1 Control specimens are exposed only to the 70C(158F)heat.4.3 Compatibility is determined by comparing the measuredand observed properties of the test specimens to the controlsamples.5.Significance and Use5.1 Liquid-applied glazing materials,bedding sealants,glazing compounds(that is,glazing sealants)are designed toprovide a seal between the IG unit and the window or wallframing.Frequently there is physical contact between thesematerials and an IG unit edge sealant.Depending on theparticular IG unit edge sealant,there can be a detrimentalphysical or chemical interaction between it and the liquid-applied glazing material.Detrimental effects may include:weakening,softening,hardening,or adhesive failure of the IGedge sealant,or visual obstruction inside the IG unit.6.Apparatus and Accessory Materials6.1 Oven,forced draft,capable of maintaining a constanttemperature of 70 6 3C(158 6 5F).6.2 Tensile Testing Machine,capable of producing a tensileload on the specimen at the rate of 5 6 0.51 mm(0.2 6 0.02in.)per minute.6.2.1 Fixed MemberA fixed or essentially stationarymember carrying one grip.6.2.2 Moveable MemberA moveable member carrying asecond grip.6.2.3 GripsThe grips should be suitable to firmly graspthe test fixture that holds the test specimen and should be1This test method is under the jurisdiction ofASTM Committee C24 on BuildingSeals and Sealants and is the direct responsibility of Subcommittee C24.20 onGeneral Test Methods.Current edition approved Dec.1,2015.Published January 2016.Originallyapproved in 1995.Last previous edition approved in 2011 as C129407(2011).DOI:10.1520/C1294-15.2For 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 onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 designed to eliminate eccentric specimen loading.Specimenloading should be parallel to the centerline of the short axis ofthe sealant.A swivel or universal joint near each end of thespecimen should be provided for alignment purposes.6.2.4 Grip FixtureA fixture capable of being held by thegrips and furnishing a tensile force to and maintaining properalignment with the test specimen.6.3 Spatulas,for use in mixing and applying sealant.6.4 Paper Cup or Can,for use in mixing multicomponentsealants when applicable.6.5 Plastic Cartridge,(Semco),to extrude sealant whenapplicable.6.6 Triple-Beam or Electronic Balance,accurate to 60.01 g(3.5 by 104oz)for weighing multicomponent sealant mixesand finish