ASTM_E_1953_-_14.pdf

Designation:E195314Standard Practice forDescription of Thermal Analysis and Rheology Apparatus1This standard is issued under the fixed designation E1953;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 generic descriptions of apparatusused for thermal analysis or rheometry measurements and itspurpose is to achieve uniformity in description of thermalanalysis,rheometry,and viscometer instrumentation through-out standard test methods.These descriptions are intended tobe used as templates for inclusion in any test method where thethermal analysis instrumentation described herein is cited.1.2 Each description contains quantifiable instrument per-formance requirements to be specified for each test method.1.3 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.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:2E473 Terminology Relating to Thermal Analysis and Rhe-ologyE1142 Terminology Relating to Thermophysical PropertiesIEEE/ASTM SI 10 Standard for Use of the InternationalSystem of Units(SI):The Modern Metric System3.Terminology3.1 Technical terms used in this document are found inTerminologiesE473andE1142andStandardIEEE/ASTM SI 10.4.Significance and Use4.1 Section 5 identifies essential instrumentation and acces-sories required to perform thermal analysis,rheometry,orviscometry for a variety of different instruments.The appro-priate generic instrument description should be included in anytest method describing use or application of the thermalanalysis,rheometry,or viscometry instrumentation describedherein.4.2 Units included in these descriptions are used to identifyneeded performance criteria and are considered typical.Otherunits may be used when including these descriptions in aspecific test method.Items underlined constitute requiredinputs specifically established for each test method(forexample,sensitivity of temperature sensor).4.3 Additional components and accessories may be added asneeded,with the appropriate performance requirements speci-fied.Items listed in these descriptions but not used in a testmethod(for example,vacuum system)may be deleted.5.Apparatus5.1 Differential Scanning Calorimeter(DSC)The essen-tial instrumentation required to provide the minimum differen-tial scanning calorimetric capability for this method includes:5.1.1 DSC Test Chamber composed of:5.1.1.1 A furnace(s)to provide uniform controlled heatingor cooling of a specimen and reference to a constant tempera-ture or at a constant rate within the applicable temperaturerange of this method.5.1.1.2 A temperature sensor to provide an indication of thespecimen temperature to 6 _ K.5.1.1.3 Differential sensors to detect a heat flow(power)difference between the specimen and reference with a range of_ mW and a sensitivity of 6 _ W.5.1.1.4 Ameans of sustaining a test chamber environment of_ at a purge rate of mL/min 6 _ mL/min.NOTE1Typically,_%pure nitrogen,argon,or helium isemployed when oxidation in air is a concern.Unless effects of moistureare to be studied,use of dry purge gas is recommended and is essential foroperation at subambient temperatures.5.1.2 A temperature controller,capable of executing aspecific temperature program by operating the furnace(s)between selected temperature limits at a rate of temperaturechange of _ K/min constant to 6 _ K/min(list1This practice is under the jurisdiction of Committee E37 on Thermal Measure-ments and is the direct responsibility of Subcommittee E37.10 on Fundamental,Statistical and Mechanical Properties.Current edition approved March 1,2014.Published March 2014.Originallyapproved in 2002.Last previous edition approved in 2013 as E1953 07(2013).DOI:10.1520/E1953-14.2For 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 cooling requirements separately if different)or at an isothermaltemperature constant to 6 _ K.5.1.3 A data collection device,to provide a means ofacquiring,storing,and displaying measured or calculatedsignals,or both.The minimum output signals required for DSCare heat flow,temperature,and time.5.1.4 Containers(pans,crucibles,vials,lids,closures,seals,etc.)that are inert to the specimen and r