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1.1 This practice lists procedures for determining the relative thermal stability of sheet or molded poly(vinyl chloride) compounds as indicated by discoloration due to exposure to an elevated temperature at controlled oven conditions.
1.2 A specimen preparation technique using a two-roll mill is provided for compositions that are not in molded or sheeted form.
1.3 This practice is not intended for use in purchasing specifications because the conditions of processing plastic compounds vary widely, and the degree of correlation of data obtained by this practice to process exposure has not been determined. However, despite this limitation, this practice does yield data of value in judging the comparative service quality of poly(vinyl chloride) compositions.
1.4 The values stated in SI units are to be regarded as the standard. The values in brackets are given for information only.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Note 1—This standard is similar in content, but not technically equivalent to ISO 305-1990.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
D883 Terminology Relating to Plastics
D1600 Terminology for Abbreviated Terms Relating to Plastics
UNSPSC Code 13102030(Polyvinyl Chloride PVC)
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ASTM D2115-92(2003), Standard Practice for Oven Heat Stability of Poly(Vinyl Chloride) Compositions, ASTM International, West Conshohocken, PA, 2003, www.astm.orgBack to Top