1、Designation:D406512Standard Practice forPlastics:Dynamic Mechanical Properties:Determination andReport of Procedures1This standard is issued under the fixed designation D4065;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year o
2、f 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.Scope*1.1 This practice is for general use in
3、 gathering and report-ing dynamic mechanical data.It incorporates laboratory prac-tice for determining dynamic mechanical properties of plasticspecimens subjected to various oscillatory deformations on avariety of instruments of the type commonly called dynamicmechanical analyzers or dynamic thermom
4、echanical analyzers.1.2 This practice is intended to provide means of determin-ing the transition temperatures,elastic,and loss moduli ofplastics over a range of temperatures,frequencies,or time,byfree vibration and resonant or nonresonant forced vibrationtechniques.Plots of elastic and loss moduli
5、are indicative of theviscoelastic characteristics of a plastic.These moduli arefunctions of temperature or frequency in plastics,and changerapidly at particular temperatures or frequencies.The regionsof rapid moduli change are normally referred to as transitionregions.1.3 The practice is primarily u
6、seful when conducted over arange of temperatures from 160C to polymer degradationand is valid for frequencies from 0.01 to 1000 Hz.1.4 This practice is intended for materials that have anelastic modulus in the range from 0.5 MPa to 100 GPa(73 psito 1.5 107psi).1.5 Discrepancies in results are known
7、to arise when ob-tained under differing experimental conditions.Without chang-ing the observed data,reporting in full(as described in thispractice)the conditions under which the data were obtainedwill enable apparent differences observed in another study tobe reconciled.An assumption of this techniq
8、ue is that testing isconducted in the region of linear viscoelastic behavior.1.6 Different modes of deformation,such as tensile,bendingand shear,are used,as listed in the referenced test methods.1.7 Test data obtained by this practice are relevant andappropriate for use in engineering design.1.8 The
9、 values stated in SI units are to be regarded asstandard.The values given in parentheses are for informationonly.1.9 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 practice to establish appro-priate safet
10、y and health practices and determine the applica-bility of regulatory limitations prior to use.Specific hazardsstatements are given in Section 8.NOTE1This practice is equivalent to ISO 67211.2.Referenced Documents2.1 ASTM Standards:2D618 Practice for Conditioning Plastics for TestingD4000 Classifica
11、tion System for Specifying Plastic Materi-alsD4092 Terminology for Plastics:Dynamic MechanicalPropertiesD4440 Test Method for Plastics:Dynamic Mechanical Prop-erties Melt RheologyD5023 Test Method for Plastics:Dynamic Mechanical Prop-erties:In Flexure(Three-Point Bending)D5024 Test Method for Plasti
12、cs:Dynamic Mechanical Prop-erties:In CompressionD5026 Test Method for Plastics:Dynamic Mechanical Prop-erties:In TensionD5279 Test Method for Plastics:Dynamic Mechanical Prop-erties:In TorsionD5418 Test Method for Plastics:Dynamic Mechanical Prop-erties:In Flexure(Dual Cantilever Beam)E1867 Test Met
13、hod for Temperature Calibration of DynamicMechanical AnalyzersE2254 Test Method for Storage Modulus Calibration ofDynamic Mechanical AnalyzersE2425 Test Method for Loss Modulus Conformance ofDynamic Mechanical Analyzers1This practice is under the jurisdiction ofASTM Committee D20 on Plastics andis t
14、he direct responsibility of Subcommittee D20.10 on Mechanical Properties.Current edition approved Aug.1,2012.Published September 2012.Originallyapproved in 1982.Last previous edition approved in 2006 as D4065-06.DOI:10.1520/D4065-12.2For referenced ASTM standards,visit the ASTM website,www.astm.org,
15、orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West
16、Conshohocken,PA 19428-2959.United States1 2.2 ISO Standard:ISO 67211 Plastics Determination of Dynamic Mechani-cal Properties,Part 1,General Principles33.Terminology3.1 DefinitionsFor definitions of terms relating to thispractice,see Terminology D4092.4.Summary of Practice4.1 A specimen of known geometry is placed in mechanicaloscillation either at fixed or natural resonant frequencies.Elastic or loss moduli,or both of the specimen are measuredwhile varying time,temperature of the specimen or fr
