ASTM_D_1755_-_15.pdf

Designation:D175515Standard 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 indicates 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 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 while 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 all of thesafety problems,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.NOTE1This standard and ISO 1264 1980 address the same subjectmatter,but differ in technical content.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-tivity 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 of 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 MaterialsD2396 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 Packaging/Packing of PlasticsE2251 Specification for Liquid-in-Glass ASTM Thermom-eters with Low-Hazard Precision Liquids3.Terminology3.1 DefinitionsDefinitions are in accordance with Termi-nology D883 and Terminology D1600,unless otherwise indi-cated.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 provides 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.Where there is no interest in aproperty,a“0”is entered in place of a cell number.If it weredesirable,it is acceptable to extend a cell limit by half the cellrange into the next higher or lower cell,but not both.When thisis done,it is indicated by a dash above the cell number(n)ifthe extension is into the higher cell,or a dash below(n)if intothe lower cell.Extension of cell limits applies only to cells1This specification is under the jurisdiction of ASTM Committee D20 onPlastics and is the direct responsibility of Subcommittee D20.15 on ThermoplasticMaterials.Current edition approved Oct.1,2015.Published October 2015.Originallyapproved in 1960.Last previous edition approved in 2009 as D1755-09.DOI:10.1520/D1755-15.2For 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 appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 where ranges of properties are allowed and not where maxi-mum or minimum values are specified.The cell number of thefirst property(dilute solution viscosity)is separated from thosethat follow by a dash.4.3 Inherent Viscosity Cell NumberWhen selecting theinherent viscosity cell number,the number shall cover the fullinherent viscosity production range for the specific product.Aresin with an inherent viscosity of