1、Designation:D460318Standard Test Method forDetermining Inherent Viscosity of Poly(EthyleneTerephthalate)(PET)by Glass Capillary Viscometer1This standard is issued under the fixed designation D4603;the number immediately following the designation indicates the year oforiginal adoption or,in the case
2、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.Scope*1.1 This test method is for the determination of the inherentviscosity of poly(ethylene terephthalate)
3、(PET)soluble at0.50%concentrationina60/40phenol/1,1,2,2-tetrachloroethane solution by means of a glass capillary vis-cometer.Highly crystalline forms of PET that are not soluble inthis solvent mixture will require a different procedure.1.2 The inherent viscosity values obtained by this testmethod ar
4、e comparable with those obtained using differentialviscometry described in Test Method D5225.1.3 The values stated in SI units are to be regarded as thestandard.The values given in parentheses are for informationonly.1.4 This standard does not purport to address all of thesafety concerns,if any,asso
5、ciated 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.Specific hazards statements are given in Section 8.1.4.1 WarningMercury has been design
6、ated by manyregulatory agencies as a hazardous material that can causeserious medical issues.Mercury,or its vapor,has beendemonstrated to be hazardous to health and corrosive tomaterials.Caution should be taken when handling mercuryand mercury containing products.See the applicable productSafety Dat
7、a Sheet(SDS)for additional information.Usersshould be aware that selling mercury and/or mercury contain-ing products into your state or country may be prohibited bylawNOTE1This standard and ISO 1628-5 address the same subjectmatter,but differ in technical content.This ISO standard gives an optionof
8、solvents for PET.Solvent specified in this ASTM test method is one ofthe options in the ISO method.ISO also uses Type 1C Ubbelohdeviscometer,rather than the 1B,and reports viscosity number,rather thaninherent viscosity.1.5 This international standard was developed in accor-dance with internationally
9、 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:2D445 Test Method fo
10、r Kinematic Viscosity of Transparentand Opaque Liquids(and Calculation of Dynamic Viscos-ity)D446 Specifications and Operating Instructions for GlassCapillary Kinematic ViscometersD1972 Practice for Generic Marking of Plastic Products(Withdrawn 2014)3D5225 Test Method for Measuring Solution Viscosit
11、y ofPolymers with a Differential ViscometerE2251 Specification for Liquid-in-Glass ASTM Thermom-eters with Low-Hazard Precision LiquidsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test MethodE2935 Practice for Conducting Equivalence Testing inLaboratory Applic
12、ationsIEEE/ASTM SI-10 Practice for Use of the InternationalSystem of Units(SI)2.2 ISO Standard:ISO 1628-5 Determination of the Viscosity of Polymers inDilute Solution Using Capillary ViscometersPart 5:Thermoplastic Polyester(TP)homopolymers and Copo-lymers.42.3 NIST Standard:C 602 Testing of Glass V
13、olumetric Apparatus51This test method is under the jurisdiction of ASTM Committee D20 on Plasticsand is the direct responsibility of Subcommittee D20.70 on Analytical Methods(D20.70.05).Current edition approved May 1,2018.Published June 2018.Originallyapproved in 1986.Last previous edition approved
14、in 2011 as D4603 03(2011)1.DOI:10.1520/D4603-18.2For 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.3The last approved
15、 version of this historical standard is referenced onwww.astm.org.4Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.5Available from National Institute of Standards and Technology(NIST),100Bureau Dr.,Stop 1070,Gaithersburg,MD 2089
16、9-1070,http:/www.nist.gov.*A Summary of Changes section appears 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(T
