1、Designation:D175521Standard Specification forPoly(Vinyl Chloride)Resins1This standard is issued under the fixed designation D1755;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 indic
2、ates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This specification covers the establishment of require-ments for homopolymers of vinyl chloride in original powderform intended for subsequent mixing and processing
3、in ther-moplastic compositions.These resins have a nominal specificgravity of 1.4 and a theoretical chlorine content of 56.8%.1.2 Two types of resin have been recognized:generalpurpose(suspension or mass)and dispersion.When mixedwith plasticizer,general-purpose resins yield a dry or moistpowder whil
4、e dispersion resins yield a liquid slurry.Sincemany resins are polymerized to meet special requirements,asystem of classification has been provided that permits a widechoice of grades.1.3 The values stated in SI units are to be regarded as thestandard.1.4 This standard does not purport to address al
5、l 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.NOTE1This standard and ISO 1264 1980 address the sam
6、e subjectmatter,but differ in technical content.1.5 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 th
7、e World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D495 Test Method for High-Voltage,Low-Current,Dry ArcResistance of Solid Electrical InsulationD883 Terminology Relating to PlasticsD1125 Test Methods for Electrical Conductivity and Resis-ti
8、vity of WaterD1243 Test Method for Dilute Solution Viscosity of VinylChloride PolymersD1600 Terminology forAbbreviated Terms Relating to Plas-ticsD1823 Test Method for Apparent Viscosity of Plastisols andOrganosols at High Shear Rates by Extrusion ViscometerD1824 Test Method for Apparent Viscosity o
9、f Plastisols andOrganosols at Low Shear RatesD1895 Test Methods for Apparent Density,Bulk Factor,andPourability of Plastic MaterialsD1921 Test Methods for Particle Size(Sieve Analysis)ofPlastic MaterialsD2132 Test Method for Dust-and-Fog Tracking and ErosionResistance of Electrical Insulating Materi
10、alsD2396 Test Methods for Powder-Mix Time of Poly(VinylChloride)(PVC)Resins Using a Torque RheometerD3030 Test Method for Volatile Matter(Including Water)ofVinyl Chloride ResinsD3367 Test Method for Plasticizer Sorption of Poly(VinylChloride)Resins Under Applied Centrifugal ForceD3892 Practice for P
11、ackaging/Packing of PlasticsE2251 Specification for Liquid-in-Glass ASTM Thermom-eters with Low-Hazard Precision Liquids3.Terminology3.1 DefinitionsFor definition of terms that appear in thisstandard specification relating to plastics,refer to TerminologyD883.For abbreviations use in this standard s
12、pecificationrelating to plastics,refer to Terminology D1600.4.Classification4.1 TypesThis specification covers two types of resin:4.1.1 Type GPGeneral-purpose suspension or mass resins.4.1.2 Type DDispersion resins primarily intended for usein organosols and plastisols.4.2 GradesThis specification p
13、rovides for as many gradesof resin as it is feasible to be selected from the possiblecombinations of requirements in Table 1 and Table 2.A gradeis designated by first indicating the type(GPor D),followed bycell numbers for each property in the order in which they arelisted in Table 1 and Table 2.Whe
14、re there is no interest in a1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterials.Current edition approved May 1,2021.Published June 2021.Originallyapproved in 1960.Last previous edition approv
15、ed in 2015 as D1755-15.DOI:10.1520/D1755-21.2For 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
16、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(TBT)Committee.1property,a“0”is entered in place o
