ASTM_D_1084_-_08.pdf

Designation:D108408Standard Test Methods forViscosity of Adhesives1This standard is issued under the fixed designation D1084;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 the determination of theviscosity of free-flowing adhesives.1.1.1 The limitation of this test method to self-levelingadhesives eliminates thixotropic and plastic materials whoseviscosity is a function of the rate of stirring and previoushistory of the adhesive.1.2 The values stated in SI units are to be regarded as thestandard.The values in parentheses are for information only.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:2D88 Test Method for Saybolt ViscosityD115 Test Methods for Testing Solvent Containing Var-nishes Used for Electrical InsulationD562 Test Method for Consistency of Paints MeasuringKrebs Unit(KU)Viscosity Using a Stormer-Type Viscom-eterD907 Terminology of AdhesivesD1200 Test Method for Viscosity by Ford Viscosity CupD1545 Test Method for Viscosity of Transparent Liquids byBubble Time MethodD1601 Test Method for Dilute Solution Viscosity of Ethyl-ene PolymersD2556 Test Method for Apparent Viscosity of AdhesivesHaving Shear-Rate-Dependent Flow Properties Using Ro-tational Viscometry2.2 ISO Document:3ISO 2555 Plastics Resins in the Liquid State or asEmulsions or Dispersions Determination of ApparentViscosity by the Brookfield Test Method3.Terminology3.1 Definitions:3.1.1 Many terms in these test methods are defined inTerminology D907.3.1.2 viscosity,nof a liquid,the resistance to flow ex-pressed as the ratio of the applied stress to the resulting rate ofshearing strain(see Newtonian behavior and thixotropy).(Compare consistency.)3.2 Definitions of Terms Specific to This Standard:3.2.1 viscosity,nthe ratio of shear stress to shear rate.Theviscosity of a liquid is a measure of the internal friction of theliquid in motion.The unit of dynamic viscosity is the poise,which is expressed as dyne-seconds per square centimetre.Fora Newtonian liquid,the viscosity is constant at all shear rates.For a non-Newtonian liquid,viscosity will vary depending onshear rate.4.Significance and Use4.1 Several test methods are noted for viscosity determina-tion of Newtonian and near Newtonian flow characteristics.(For adhesives not fitting into this category,Test MethodD2556 should be considered.)Four test methods are covered asfollows:4.1.1 Method A is applicable only to adhesives that willdeliver 50 mL in a steady uninterrupted stream from one of thecups described in Section 5.4.1.2 Method B is intended for measuring the viscosity ofadhesives covering a range from 0.05 Pa s to 200 Pa s(50 to 200 000 cP)and is limited to materials that have orapproach Newtonian flow characteristics.4.1.3 Method C is intended primarily as a control methodfor determining the viscosity of adhesives that have or ap-proach Newtonian flow characteristics.1These test methods are under the jurisdiction of ASTM Committee D14 onAdhesives and are the direct responsibility of Subcommittee D14.10 on WorkingProperties.Current edition approved Feb.1,2008.Published February 2008.Originallyapproved in 1950.Last previous edition approved in 2005 as D1084 97(2005).DOI:10.1520/D1084-08.2For 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 National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 4.1.4 Method D is intended primarily as a control methodfor determining the viscosity of materials that have an equiva-lent viscosity no greater than approximately 3000 cP and islimited to materials that have or approach Newtonian flowcharacteristics.TEST METHOD A5.Apparatus5.1 The apparatus(Fig.1)consists of a set of four viscositycups so designed as to deliver 50 mL of the sample in from 30to 100 s at a temperature of 23 6 0.5C(73.4 6 0.9F).5.1.1 Four consistency cups constitute a set as follows:Diameter of Orifice,in.First Cup0.07 0.0001Second cup0.10 0.0001Third cup0.15 0.0001Fourth cup0.25 0.00015.1.2 Cups made of brass or bronze.Orifice disks made of18%Chromium,8%Nickel stainless steel.The diameter ofthe Orifi