1、Designation: D 4670 07Standard Test Method forPolyurethane Raw Materials: Determination of SuspendedMatter In Polyols1This standard is issued under the fixed designation D 4670; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the y
2、ear of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) 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 mat
3、erial 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 and determine the applica-bility of regulatory limitations prior to use
4、.NOTE 1There is no similar or equivalent ISO standard.2. Referenced Documents2.1 ASTM Standards:2D 883 Terminology Relating to Plastics3. Terminology3.1 Terminology in this test method is in accordance withTerminology D 883.4. Significance and Use4.1 This test method is suitable as a quality control
5、 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 of suspended matter.7. Precision and Bias7.1 No statement is made about
6、the precision or the biassince this test method merely states whether there is conform-ance to the criteria for success specified in the procedure.8. Keywords8.1 polyols; polyurethane raw materials; suspended matterSUMMARY OF CHANGESCommittee D20 has identified the location of selected changes to th
7、is standard since the last issue(D 4670 97(02) that may impact the use of this standard. (November 1, 2007)(1) Added descriptive adjectives to better define the proce-dural requirements.1This test method is under the jurisdiction of ASTM Committee D20 on Plasticsand is the direct responsibility of S
8、ubcommittee D20.22 on Cellular Materials -Plastics and Elastomers. It was recommended to ASTM by the Society of ThePlastics Industry Polyurethane Raw Materials Analysis Committee.Current edition approved Nov. 1, 2007. Published November 2007. Originallyapproved in 1987. Last previous edition approve
9、d in 2002 as D 4670 97(2002).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.1*A Summary of Changes section a
10、ppears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users
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12、ive years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of theresponsible technical
13、 committee, which you may attend. If you feel that your comments have 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 copies) 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).D4670072
