1、Designation:D467017Standard Test Method forPolyurethane Raw Materials:Determination of SuspendedMatter in Polyols1This standard is issued under the fixed designation D4670;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of l
2、ast 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 a procedure for visual inspec-tion to determine the presence of insoluble foreign material inpolyol
3、s.1.2 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.NOTE1There is no
4、 known ISO equivalent to this standard.2.Referenced Documents2.1 ASTM Standards:2D883 Terminology Relating to Plastics3.Terminology3.1 Terminology in this test method is in accordance withTerminology D883.4.Significance and Use4.1 This test method is suitable as a quality control orspecification tes
5、t.5.Procedure5.1 Invert a colorless,transparent glass bottle containing thewell-mixed sample and examine by transmitted light for thepresence of suspended matter.6.Report6.1 Report the presence or absence of suspended matter.7.Precision and Bias7.1 No statement is made about the precision or the bia
6、ssince this test method merely states whether suspended matteris detected or not.8.Keywords8.1 polyols;polyurethane raw materials;suspended matterSUMMARY OF CHANGESCommittee D20 has identified the location of selected changes to this standard since the last issue(D4670 07(2012)1)that may impact the
7、use of this standard.(March 1,2017)(1)Modified 7.1 to provide clearer instruction.1This test method is under the jurisdiction of ASTM Committee D20 on Plasticsand is the direct responsibility of Subcommittee D20.22 on Cellular Materials-Plastics and Elastomers.It was recommended to ASTM by the Cente
8、r for thePolyurethanes Industry Polyurethane Raw Material Analysis Workgroup.Current edition approved March 1,2017.Published March 2017.Originallyapproved in 1987.Last previous edition approved in 2012 as D4670 07(2012)1.DOI:10.1520/D4670-17.2For referenced ASTM standards,visit the ASTM website,www.
9、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 C
10、700,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 Worl
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