1、Designation: D4670 07 (Reapproved 2012)1Standard 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 o
2、f 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.1NOTEReapproved with editorial changes in August 2012.1. Scope*1.1 This test method covers a procedure for
3、 visual inspec-tion to determine the presence of insoluble foreign material inpolyols.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 a
4、nd determine the applica-bility of regulatory limitations prior to use.NOTE 1There is no 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. Si
5、gnificance and Use4.1 This test method is suitable as a quality control orspecification test.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 o
6、f suspended matter.7. Precision and Bias7.1 No statement is made about the precision or the biassince this test method merely states whether there is confor-mance to the criteria for success specified in the procedure.8. Keywords8.1 polyols; polyurethane raw materials; suspended matterSUMMARY OF CHA
7、NGESCommittee D20 has identified the location of selected changes to this standard since the last issue(D4670 07) that may impact the use of this standard. (August 1, 2012)(1) Modified Note 1 to be meet the requirements of GuideD4968.(2) Updated footnote 1 to include the current name for thepolyuret
8、hane division under the American Chemistry Counciland for the current name of the work group.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
9、 by the Center for thePolyurethanes Industry Polyurethane Raw Material Analysis Workgroup.Current edition approved Aug. 1, 2012. Published November 2012. Originallyapproved in 1987. Last previous edition approved in 2007 as D4670 07. DOI:10.1520/D4670-07R12E01.2For referenced ASTM standards, visit t
10、he 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 B
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14、not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple c
15、opies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/COPYRIGHT/).D4670 07 (2012)12
