1、Designation:D406520Standard 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 140C to polymer softening andis 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 to
7、 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 technique
8、 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 v
9、alues 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 standard to establish appro-priate safety,
10、health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.Specific hazards statements are given in Section 8.NOTE1This practice is equivalent to ISO 67211.1.10 This international standard was developed in accor-dance with internationally recognized pr
11、inciples 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:2D618 Practice for Conditioning Pl
12、astics for TestingD4000 Classification 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 Be
13、nding)D5024 Test Method for Plastics: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(D
14、ual Cantilever Beam)1This practice is under the jurisdiction ofASTM Committee D20 on Plastics andis the direct responsibility of Subcommittee D20.10 on Mechanical Properties.Current edition approved Sept.1,2020.Published September 2020.Originallyapproved in 1982.Last previous edition approved in 201
15、2 as D4065-12.DOI:10.1520/D4065-20.2For 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.*A Summary of Changes section a
16、ppears at the end of this standardCopyright 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.E1867 Test Methods for Temperature Calibrati
