ASTM_D_3030_-_11.pdf

Designation:D303011Standard Test Method forVolatile Matter(Including Water)of Vinyl Chloride Resins1This standard is issued under the fixed designation D3030;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 test method covers the quantitative determinationof the volatile matter(including water)present in vinylchloride resins.1.2 The values stated in SI units are to be regarded asstandard.1.3 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 and health practices and determine the applica-bility of regulatory limitations prior to use.NOTE1This test method is identical ISO 1269.2.Referenced Documents2.1 ASTM Standards:2D618 Practice for Conditioning Plastics for TestingD883 Terminology Relating to PlasticsD1600 Terminology forAbbreviated Terms Relating to Plas-ticsE145 Specification for Gravity-Convection and Forced-Ventilation Ovens2.2 ISO Standard:ISO 1269 Homopolymer and Copolymer Resins of VinylChlorideDetermination of Volatile Matter IncludingWater33.Terminology3.1 Definitions:Definitions are in accordance with Defini-tions D883 and Terminology D1600,unless otherwise indi-cated.4.Summary of Test Method4.1 This test method consists of heating at 110C a knownquantity of powdered resin to constant mass.The calculatedmass loss defines quantitatively the volatile matter present inthe sample.5.Significance and Use5.1 The quantity of volatile components in a vinyl chlorideresin can be established by this test method.This test methoddoes not identify the components.6.Apparatus6.1 OvenA forced-ventilation oven conforming to therequirements for Type IIA in Specification E145.The ovenshould be capable of maintaining a temperature of 110 6 1Cwhen the damper is half open and the vent is wide open.6.1.1 The oven shall be equipped with a calibrated ASTMthermometer and the proper stem correction shall be applied tothe temperature measurement.6.1.2 The oven temperature shall be controlled by anaccurate,reliable thermoregulator,maintaining the set pointwithin 60.5C or better.6.1.3 The inside of the oven shall be free of contaminationor surface deposits.Stainless steel oven liners should be usedto reduce corrosion due to continued exposure to decomposi-tion gases.6.2 Sample ContainerA weighing vessel of low shapedesign in glass,aluminum,or stainless steel of sufficient size tohold a 10-g resin sample.An aluminum weighing dish,57 mmin diameter and 18 mm in depth,is suitable.6.3 BalanceAweighing balance with a precision to within0.001 g.7.Preparation of Apparatus7.1 Maintain the oven at the temperature of the test for atleast 1 h prior to insertion of the specimens.7.2 Prior to test operation,verify the uniformity of tempera-ture within the oven according to Specification E145.Theairflow in the oven should be greater than 0.3 m3/min(10ft3/min).NOTE2The temperature uniformity can also be verified by placing 5or more portions of the same resin sample in the oven,distributed over the1This test method is under the jurisdiction of ASTM Committee D20 on Plasticsand is the direct responsibility of Subcommittee D20.15 on Thermoplastic Materials(Section D20.15.08).Current edition approved Sept.1,2011.Published September 2011.Originallyapproved in 1972.Last previous edition approved in 2006 as D3030-95(2006).DOI:10.1520/D3030-11.2For 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.3Available from American National Standards Institute(ANSI),25 W.43rd St.,4th Floor,New York,NY 10036,http:/www.ansi.org.*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 test area,following Section 8.Calculate the percent of volatile loss(Section 9).If the differences in the volatile loss of the samples exceed thetest reproducibility,the temperature in the oven is not uniform and mustbe corrected before proceeding with the test.8.Procedure8.1 Dry the weighing vessel in the oven at 110 6 1C for 30min and cool to room temperature in a desiccator.Tare theweighing vessel to the nearest 0.001 g.8.2 Spread approximately 10 g of sample resin evenly overthe bottom of the weighing vessel and weigh to the nearest0.001 g.Record the sample mass.8.3 Place the resin-filled weighing dish in the oven con-trolled at 110 6 1C and close the oven.8.4 After 1 h,remove the weighing dish,cool to roomtemperature in a desiccator,and weigh to the nearest 0.001 g.Return the weighing dish to the o