ASTM_D_816_-_06_2011.pdf

Designation:D81606(Reapproved 2011)Standard Test Methods forRubber Cements1This standard is issued under the fixed designation D816;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.This standard has been approved for use by agencies of the U.S.Department of Defense.1.Scope1.1 These test methods cover tests to measure the propertiesof adhesives,commonly called rubber cements,that may beapplied in plastic or fluid form and that are manufactured fromnatural rubber,reclaimed rubber,synthetic elastomers,orcombinations of these materials.All tests are not to beconsidered as applicable to a particular type of adhesive nor isevery test included that may be applicable to a particular type.The tests do provide standard procedures for evaluating themore important properties of the usual adhesives ordinarilyclassed as rubber cements.1.2 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.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 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:2D413 Test Methods for Rubber PropertyAdhesion to Flex-ible SubstrateD429 Test Methods for Rubber PropertyAdhesion toRigid SubstratesD573 Test Method for RubberDeterioration in an AirOvenD1084 Test Methods for Viscosity of AdhesivesD3182 Practice for RubberMaterials,Equipment,and Pro-cedures for Mixing Standard Compounds and PreparingStandard Vulcanized SheetsD3184 Practice for RubberEvaluation of NR(NaturalRubber)2.2 Other Document:SAE Handbook33.Summary of Test Methods3.1 The tests described in these test methods may begrouped into two classes,the first including those procedures inwhich the adhesive is applied to specimens of materials to bebonded together after which the quality of the bond isevaluated,and the second including those procedures appli-cable to the adhesive itself without consideration of thebonding properties.The classes are as follows:Class I:SectionAdhesion strength8 to 15Bonding range16 to 18Softening point19 to 21Cold flow22 to 24Class II:Viscosity25Stability26 to 27Cold brittleness28 to 29Density30 to 31Plastic deformation32 to 334.Significance and Use4.1 These tests are used as a means of classifying,evaluating,and controlling cement compositions.Adhesionstrength in tension,shear,and in a peeling mode are necessarywhere rubber materials are used in various engineering appli-cations where forces are encountered both normal to theadhesion plane and parallel to the plane of the adhesiveinterface.5.Materials for Bonded Specimens5.1 The following materials shall be used as specified forthe preparation of specimens bonded with the test cement fortests of Class I and shall be reported with the result of the test:5.1.1 Aluminum Sheet,Cladded Material,gauge 1.6 mm(0.064 in.),1These methods are under the jurisdiction of ASTM Committee D11 on Rubberand are the direct responsibility of Subcommittee D11.25 on Rubber AdhesiveSystems.Current edition approved Nov.1,2011.Published January 2012.Originallyapproved in 1951.Last previous edition approved in 2006 as D816 06.DOI:10.1520/D0816-06R11.2For 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.3Available from American Society of Mechanical Engineers,ASME Interna-tional Headquarters,Three Park Ave.,New York,NY 100165990.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 5.1.2 Standard Rubber Test Sheets,refer to Test MethodsD3184 for a typical rubber formulation,and refer to PracticeD3182 for preparing the sheets.5.1.3 Cotton Duck,medium texture 1030 g/m2,and5.1.4 Coated Fabrics,of which the fabric strength and theadhesion of coating to fabric exceed the strength of theadhesive bond.5.1.5 Rolled Sheet or Machined Steel,SAE No.1020,sandblasted or sanded with medium/fine abrasive,and5.1.6 Special materials such as leather,cork,felt,etc.6.Sampling6.1 Before sampling,the cement to be tested shall bethoroughly agitated to uniform consistency throughout,afterwhich a sample shall be taken of sufficient quantity forperformance of the tests required.The sample shall be kept ina tightly closed container to prevent evaporation and shall beagitated or stirred to uniform consistency immediately beforetest or use in preparation of test specimens.7.Test Conditions7.1 The tests of adhesives shall be conducted at a tempera-ture of 23 6