ASTM_D_3529M_-_10.pdf

Designation:D3529M 10Standard Test Methods forConstituent Content of Composite Prepreg1This standard is issued under the fixed designation D3529M;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.This standard has been approved for use by agencies of the Department of Defense.1.Scope1.1 This test method covers the determination of the fibercontent,fiber areal weight,matrix solids content and matrixcontent of composite material prepregs.Optionally,the matrixsolids content can also be determined after a volatiles contenthas been established.Volatiles content,if appropriate andrequired,is determined by means of Test Method D3530/D3530M.1.2 Procedure A of this test method applies to compositeprepreg of primarily thermosetting matrices that can be ex-tracted in organic solvent.The reinforcement and filler must besubstantially insoluble in the selected extraction reagent.Thisprocedure may also be used for the same purposes to extractother matrix material types.1.3 Procedure B of this test method uses ignition loss of acomposite prepreg matrix and applies to organic matrix com-posite systems containing reinforcing fibers that do not changemass when exposed to the matrix combustion method.1.4 This test method assumes a two-part material system(plus volatiles)and does not distinguish between hybridreinforcements or matrices.Use with hybrid composites islimited to determination of total reinforcement or total matrixcontent.1.5 Matrix solids determination for Procedures A or B usesTest Method D3530/D3530M to determine volatiles content.1.6 Alternate techniques for determining constituent contentinclude Test Methods C613/C613M(resin content by Soxhletextraction)and D3171(used principally for consolidatedlaminates).1.7 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.8 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.Specific precau-tionary information is given in Notes 2-8.2.Referenced Documents2.1 ASTM Standards:2C613/C613M Test Method for Constituent Content of Com-posite Prepreg by Soxhlet ExtractionD883 Terminology Relating to PlasticsD3171 Test Methods for Constituent Content of CompositeMaterialsD3530/D3530M Test Method for Volatiles Content of Com-posite Material PrepregD3878 Terminology for Composite MaterialsE177 Practice for Use of the Terms Precision and Bias inASTM Test MethodsE1309 Guide for Identification of Fiber-ReinforcedPolymer-Matrix Composite Materials in Databases2.2NFPA Standard:NFPA 86 Standard for Ovens and Furnaces33.Terminology3.1 DefinitionsTerminology D3878 defines terms relatingto composite materials.Terminology D883 defines termsrelating to plastics.Practice E177 defines terms relating tostatistics.In the event of a conflict between terms,TerminologyD3878 shall have precedence over the other documents.3.1.1 fiber content,nthe amount of fiber present in acomposite or prepreg expressed either as percent by weight orpercent by volume.This is sometimes stated as a fraction,thatis,fiber volume fraction.See Terminology D3878.3.1.2 matrix content,nthe amount of matrix present in acomposite or prepreg expressed either as percent by weight orpercent by volume.For polymer matrix composites this is resincontent.See Terminology D3878.3.1.3 prepreg,nthe admixture of fibrous reinforcementand polymeric matrix used to fabricate composite materials.Itsform may be sheet,tape,or tow.For thermosetting resins,it has1This test method is under the jurisdiction of ASTM Committee D30 onComposite Materials and is the direct responsibility of Subcommittee D30.03 onConstituent/Precursor Properties.Current edition approved Nov.1,2010.Published December 2010.Originallyapproved in 1976.Last previous edition approved in 2008 as D3529/D3529M 97(2008).DOI:10.1520/D3529M-10.2For 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 National Fire Protection Association(NFPA),1 BatterymarchPark,Quincy,MA 02269-9101.1Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959,United States.been partially cured to a controlled viscosity called“B stage”.See Terminology D3878.3.1.4 reinforcement content,nthe amount of reinforce-ment present in a composite or prepreg expressed either aspercent by weight or percent by volume.3.1.4.1 DiscussionIf fiber is the sole reinforcement