ASTM_D_6604_-_00_2017.pdf

Designation:D660400(Reapproved 2017)Standard Practice forGlass Transition Temperatures of Hydrocarbon Resins byDifferential Scanning Calorimetry1This standard is issued under the fixed designation D6604;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 practice covers determination of glass transitiontemperatures of hydrocarbon(HC)resins by differential scan-ning calorimetry(DSC).1.2 This practice is applicable to HC resins as defined inTerminology D6640.The normal operating temperature rangeis from the cryogenic region to approximately 180C.Thetemperature range can be extended.1.3 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.4 Further discussion of glass transition can be found inTest Method D3418,and Test Method E1356.1.5 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,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D3418 Test Method for Transition Temperatures and En-thalpies of Fusion and Crystallization of Polymers byDifferential Scanning CalorimetryD6640 Practice for Collection and Handling of Soils Ob-tained in Core Barrel Samplers for Environmental Inves-tigationsE473 Terminology Relating to Thermal Analysis and Rhe-ologyE1356 Test Method for Assignment of the Glass TransitionTemperatures by Differential Scanning Calorimetry3.Terminology3.1 Definitions:3.1.1 differential scanning calorimetry(DSC),nA tech-nique in which the difference in energy inputs into a substanceand a reference material is measured as a function oftemperature,while the substance and reference material aresubjected to a controlled temperature program.3.1.1.1 DiscussionThe record is the DSC curve.Twomodes,power-compensation DSC and heat-flux DSC,can bedistinguished,depending on the method of measurement used.3.2 For other definitions of terms relating to thermalanalysis,see Terminology E473.4.Summary of Practice4.1 This practice consists of heating or cooling the testmaterial at a controlled rate,in a controlled atmosphere,andcontinuously monitoring with a suitable sensing device,thedifference in heat input between a reference material and a testmaterial due to energy changes in the material.Absorption orrelease of energy marks a transition in the specimen resultingin a corresponding baseline shift in the heating or coolingcurve.5.Significance and Use5.1 Thermal analysis provides a rapid method for determin-ing transition temperatures in HC resins that possess them.5.2 This practice is useful for both quality assurance andresearch.6.Apparatus6.1 Differential Scanning CalorimeterAn instrument ca-pable of heating or cooling at rates up to 20 6 1C/min andautomatically recording the difference in input between thesample and a reference material to the required sensitivity andprecision.1This practice is under the jurisdiction of ASTM Committee D01 on Paint andRelated Coatings,Materials,and Applications and is the direct responsibility ofSubcommittee D01.34 on Pine Chemicals and Hydrocarbon Resins.Current edition approved Dec.1,2017.Published December 2017.Originallyapproved in 2000.Last previous edition approved in 2013 as D6604 00(2013).DOI:10.1520/D6604-00R17.2For 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 StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1 6.2 Sample Tubes or PansBorosilicate glass tubes areused for certain applications and aluminum or other metal pansof high thermal conductivity for other applications.6.3 Reference MaterialGlass beads,indium,alumina,sili-con carbide,or mercury in a hermetically sealed sample pan,ora material known to be unaffected by repeated heating andcooling and free from