BS ISO 3374-2000 Reinforcement products - Mats and fabrics - Determination of mass per unit area《增强制品 毯子和织物 单位面积质量的测定》.pdf

1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS ISO 3374:2000 ICS 59.1

2、00.10 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Reinforcement products Mats and fabrics Determination of mass per unit areaThis British Standard, having been prepared under the direction of the Sector Committee for Materials and Chemicals, was published under the authori

3、ty of the Standards Committee and comes into effect on 15 October 2000 BSI 10-1999 ISBN 0 580 36542 5 BS ISO 3374:2000 Amendments issued since publication Amd. No. Date Comments National foreword This British Standard reproduces verbatim ISO 3374:2000 and implements it as the UK national standard. T

4、he UK participation in its preparation was entrusted to Technical Committee PRI/42, Fibre reinforced thermosetting plastics and prepegs, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretat

5、ion, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which imp

6、lement international publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to incl

7、ude all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the I

8、SO title page, pages ii to iv, pages 1 to 7 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued.Referencenumber ISO3374:2000(E) INTERNATIONAL STANDARD ISO 3374 Thirdedition 2000-06-15 ReinforcementproductsMatsand fabricsDeterminationofmas

9、sperunit area RenfortsMatsettissusDterminationdelamassesurfaciqueou grammageISO3374:2000(E) ii ISO3374:2000(E)iii Contents Page Foreword.iv 1 Scope1 2 Normativereferences1 3 Termanddefinition.1 4 Principle1 5 Apparatus.2 6 Testspecimens2 7 Conditioningandtestatmospheres3 8 Procedure.5 9 Calculationa

10、ndexpressionofresults.5 10 Testreport5 AnnexA(informative)Precisionandbias6ISO3374:2000(E) iv Foreword ISO(theInternationalOrganizationforStandardization)isaworldwidefederationofnationalstandardsbodies(ISO memberbodies).TheworkofpreparingInternationalStandardsisnormallycarriedoutthroughISOtechnical

11、committees.Eachmemberbodyinterestedinasubjectforwhichatechnicalcommitteehasbeenestablishedhas therighttoberepresentedonthatcommittee.Internationalorganizations,governmentalandnon-governmental,in liaisonwithISO,alsotakepartinthework.ISOcollaboratescloselywiththeInternationalElectrotechnical Commissio

12、n(IEC)onallmattersofelectrotechnicalstandardization. InternationalStandardsaredraftedinaccordancewiththerulesgivenintheISO/IECDirectives,Part3. DraftInternationalStandardsadoptedbythetechnicalcommitteesarecirculatedtothememberbodiesforvoting. PublicationasanInternationalStandardrequiresapprovalbyatl

13、east75%ofthememberbodiescastingavote. AttentionisdrawntothepossibilitythatsomeoftheelementsofthisInternationalStandardmaybethesubjectof patentrights.ISOshallnotbeheldresponsibleforidentifyinganyorallsuchpatentrights. InternationalStandardISO3374waspreparedbyTechnicalCommitteeISO/TC61,Plastics,Subcom

14、mitteeSC13, Compositesandreinforcementfibres. Thisthirdeditioncancelsandreplacesthesecondedition(ISO3374:1990),whichhasbeentechnicallyrevised. AnnexAofthisInternationalStandardisforinformationonly.INTERNATIONALSTANDARD ISO3374:2000(E)1 ReinforcementproductsMatsandfabricsDeterminationof massperunitar

15、ea 1 Scope ThisInternationalStandardspecifiesamethodfordeterminingthemassperunitareaofmats(eitherchopped- strandmatorcontinuous-strandmat)orfabricswhichmaybemanufacturedwithglassorcarbonoraramidyarns. 2 Normativereferences Thefollowingnormativedocumentscontainprovisionswhich,throughreferenceinthiste

16、xt,constituteprovisionsof thisInternationalStandard.Fordatedreferences,subsequentamendmentsto,orrevisionsof,anyofthese publicationsdonotapply.However,partiestoagreementsbasedonthisInternationalStandardareencouragedto investigatethepossibilityofapplyingthemostrecenteditionsofthenormativedocumentsindi

17、catedbelow.For undatedreferences,thelatesteditionofthenormativedocumentreferredtoapplies.MembersofISOandIEC maintainregistersofcurrentlyvalidInternationalStandards. ISO291:1997,PlasticsStandardatmospheresforconditioningandtesting. ISO3344:1997,ReinforcementproductsDeterminationofmoisturecontent. ISO

18、5725-1:1994,Accuracy(truenessandprecision)ofmeasurementmethodsandresultsPart1:General principlesanddefinitions. ISO5725-2:1994,Accuracy(truenessandprecision)ofmeasurementmethodsandresultsPart2:Basicmethod forthedeterminationofrepeatabilityandreproducibilityofastandardmeasurementmethod. 3 Termanddefi

19、nition ForthepurposesofthisInternationalStandard,thefollowingtermanddefinitionapply: 3.1 massperunitarea theratioofthemassofapieceofmatorfabricofspecifieddimensionstothearea NOTE Thismassincludesboththestrandsandanyothermaterialprotectingorbindingthestrandsoryarns. 4Principle Themassofatestspecimeno

20、fknownareaisdetermined,andthemassperunitareacalculated.ISO3374:2000(E) 2 5 Apparatus 5.1 Polishedmetaltemplate,whichyieldsatestspecimenwith asquareshapeofarea1000cm 2 formats; asquareorcircularshapeofarea100cm 2 forfabrics. Thepermissibleerrorintheareaoftheresultingspecimensshallbe1%orless. Byagreem

21、entbetweentheinterestedparties,alargerspecimenmaybeused.Insuchcases,theshapeand dimensionsofthespecimenshallbenotedinthetestreport. 5.2 Suitablecuttingtool,forexampleknife,scissors,cuttingdiscorpunch. 5.3 Specimenholder,whichprovidesoptimumaircirculationaroundthespecimen,madefromaheat-resistant mate

22、rialandsuchthatthereisnolossoftheproductundertest.Thismaybeabasketconstructedfromstainless- steelwiremesh. 5.4 Balance,havingthefollowingcharacteristics: Material Measuringcapability Limitofpermissibleerror Resolution Mats,allweights 0to150g 0,5g 0,1g FabricsW200g/m 2 0to150g 10mg 1mg Fabrics 200g/m

23、 2 0to150g 1mg 0,1mg Incaseswherelargerspecimensaretaken(see5.1),abalanceshallbeusedthatprovidesequivalentaccuracy. 5.5 Apparatustobeusedincaseswhenspecimensmustbedried: 5.5.1 Ventilateddryingoven,withanairchangerateof20to50timesperhour,capableofmaintaininga temperatureof105C 3C. 5.5.2 Desiccator,co

24、ntainingasuitabledryingagent(forexamplesilicagel,calciumchlorideorphosphorus pentoxide). 5.5.3 Stainless-steeltongs,forhandlingthespecimenandspecimenholder. 6 Testspecimens Unlessotherwiseagreedbetweentheinterestedparties,thenumberofspecimenstakenfromeachrollorfromthe laboratorysampleshallbe formats

25、: three1000cm 2 specimenspermetreofwidth(inpractice,normallyonespecimenforevery 31,6cmacrossthewidthofthemat); forfabrics: one100cm 2 specimenper50cmofwidth. Inallcases,aminimumoftwospecimensshallbetaken. SuggestedmethodsforcuttingspecimensareshowninFigure1formatsandFigures2and3forfabrics.ISO3374:20

26、00(E)3 Notethat formats: specimensaretakeninonerow,generallysidebyside, thedistancefromtheedgemaybezerofortrimmedmats,butthedistancefromanyuntrimmed edgesshallbeatleast10cm; forfabrics: specimensaretakenseparately,preferablyinvolvingdifferentweftyarns, thedistancefromtheedge/selvedgeshallbeatleast5c

27、m. Specialinstructionsshallbeprovided,asneeded,totheoperatorstoassurethatthecuttingprocedureresultsin specimensareaswhicharewithinthetolerancerangeforthismethod. Formatsnarrowerthan31,6cmandfabricsnarrowerthan25cm,thespecimentypeanddimensionsshallbe agreedbetweenthepurchaserandsupplier. NOTE Somespe

28、cificationsmaystipulatethatthemassperunitareaisbasedonamethodusingthewholerollasthetest specimen.Inthatcase,themassoftherollisdividedbythefullareaoftheroll. Theresultobtained(inthesespecifications,usuallycalledthe“actualmeanweight“)isnotnecessarilycomparablewiththat obtainedwiththemethoddescribedint

29、hisInternationalStandard. 7 Conditioningandtestatmospheres Unlessotherwisespecifiedintheproductspecificationorbythepersonorderingthetest,noconditioningofthe specimensisrequired. Ifconditioningisutilized,refertoISO291. Dimensionsincentimetres Key 1 Directionofmatwidth 2 Discard Figure1Suggestedmethod

30、forcuttingoutmatspecimensISO3374:2000(E) 4 Dimensionsincentimetres Key 1 Widthoffabric 2 Warpdirection a Insteadofcircularspecimens,squarespecimensmaybetakenorientedeitherparalleltoordiagonallyacrosstheyarns. Figure2Suggestedmethodforcuttingoutfabricspecimens(fabricswiderthan50cm) Dimensionsincentim

31、etres Key 1 Warpdirection Figure3Suggestedmethodforcuttingoutfabricspecimens(fabricsbetween25cmand50cmwide)ISO3374:2000(E)5 8 Procedure 8.1 Cutastripatleast35cmwideacrosstheentirewidthofthematorfabricasthelaboratorysample. 8.2 Usingthecuttingtool(5.2)andtemplate(5.1)andacleanworksurface,cutthenumber

32、ofspecimens specifiedinclause6. Ifthetestspecimenshavefibresthatmaybelost,utilizeaholder(5.3)and,ifnecessary,foldthespecimens,taking caretokeepallstrandsoryarns. 8.3 Unlessotherwiseagreedbetweentheinterestedparties,drythespecimensinaventilatedoven(5.5.1)at 105C 3Cfor1hincaseswhenthematorfabriccontai

33、nsmorethan0,2%moisture(orifthemoisturecontent isunknown),thenremovetoadesiccator(5.5.2)andcooltoroomtemperature.Uponremovalfromthedesiccator, proceedtostep8,4immediately. 8.4 Weigheachtestspecimenandrecordtheresult,subtractingthetareifaspecimenholderwasused. Theaccuracytowhichthismassisrecordedshall

34、correspondtothesensitivityofthebalance(see5.4). 9 Calculationandexpressionofresults 9.1 Foreachspecimen,calculatethemassperunitarea A ,ingramspersquaremetre,usingtheequation A m A 10000 s where m s isthemass,ingrams,ofthespecimen; A isthearea,insquarecentimetres,ofthespecimen. 9.2 Reportthemassperun

35、itareaastheaveragevalueforallthespecimenstakenacrossthewidthofthemat orfabric. Givetheresulttothenearest1g/m 2 formatsandfabricsweighing200g/m 2 ormoreandtothenearest0,1g/m 2 forfabricslighterthan200g/m 2 . Optionally,specificationsorpersonsorderingthetestmayalsorequirethattheresultsforeachindividua

36、lspecimen bereported,assuchdatamayyieldinformationaboutthemassdistributionacrossthematerial. 10Testreport Thetestreportshallincludethefollowingparticulars: a) areferencetothisInternationalStandard; b) alldetailsnecessaryforcompleteidentificationofthematorfabrictested; c) themassperunitareaofthemator

37、fabric(optionally,orifrequired,theresultforeachindividualspecimen mayalsobereported); d) detailsofanyoperationnotspecifiedinthisInternationalStandard,aswellasanyinformationordetailsofany incidentliabletohaveabearingontheresults(forinstance,thenumberofspecimensused,whetherornot preliminarydryingofthe

38、specimenswasnecessaryorwhetherspecimensdifferentfromthosespecifiedwere used); e) thedateofthetest.ISO3374:2000(E) 6 AnnexA (informative) Precisionandbias TableA.1isbasedonaroundrobinconductedin1999 1) inaccordancewithISO5725-1andISO5725-2.It involvedonecarbonfabric,onearamidfabric,threeglassfabricsa

39、ndtwoglassmatstestedbyupto11 laboratories.Individualtestspecimenswerepreparedatthelaboratorieswhichtestedthemfromsamplessupplied fromacentrallaboratory.Eachtestresultwastheaverageoftwoindividualdeterminationsforfabricsorthree individualdeterminationsformats.Eachlaboratoryobtainedthreetestresultsfore

40、achmaterial. CAUTIONTheexplanationofrandRwhichfollowsisonlyintendedtopresentameaningfulwayofconsidering theapproximateprecisionofthistestmethod.ThedatainTableA.1shouldnotbeappliedtoacceptanceor rejectionofmaterials,asthesedataapplyonlytothematerialstestedintheroundrobinandareunlikelytobe rigorouslyr

41、epresentativeofotherlots,formulations,conditions,materialsorlaboratories. DefinitionsofrandRinTableA.1:IfV r andV R havebeencalculatedfromalargeenoughbodyofdata,andfor testresultsthatwereaveragesfromtestingofthree(twoforfabrics)specimensforeachtestresult,then: Repeatability:Twotestresultsobtainedwit

42、hinonelaboratoryarejudgednotequivalentiftheydifferbymorethan thervalueforthatmaterial,rbeingtheintervalrepresentingthecriticaldifferencebetweentwotestresultsforthe samematerial,obtainedbythesameoperatorusingthesameequipmentonthesamedayinthesamelaboratory. Reproducibility:Twotestresultsobtainedbydiff

43、erentlaboratoriesarejudgednotequivalentiftheydifferbymore thantheRvalueforthatmaterial,Rbeingtheintervalrepresentingthecriticaldifferencebetweentwotestresults forthesamematerial,obtainedbydifferentoperatorsusingdifferentequipmentindifferentlaboratories. Anyjudgementinaccordancewiththeabovewouldhavea

44、napproximately95%(0,95)probabilityofbeingcorrect. Therearenorecognizedstandardsbywhichtoestimatethebiasofthismethod. 1)ThecompleteresultsoftheroundrobinareavailablefromtheSC13Secretariat(AFNOR).ISO3374:2000(E)7 TableA.1Round-robinsummaryforISO3374 Material No. Material X g/m 2 s X g/m 2 s r g/m 2 s

45、R g/m 2 r g/m 2 R g/m 2 V r % V R % 1 Carbon-fibrefabric 19,5908 0,1391 0,1275 0,1739 0,357 0,487 1,8 2,5 2 Aramid-fibrefabric 6,0817 0,1843 0,0885 0,1980 0,248 0,554 4,1 9,1 3 Glass-wovenrovingfabric 84,4072 1,7609 0,4273 1,7953 1,197 5,027 1,4 6,0 4 Glassclothfabric 20,852 0,3186 0,3837 0,4474 1,0

46、74 1,253 5,2 6,0 5 Glassstitchfabric 215,5577 5,3217 2,0130 5,5710 5,636 15,599 2,6 7,2 6 Glasschopped-strandmat 45,1650 0,8919 2,1106 2,1106 5,910 5,910 13,1 13,1 7 Glasscontinuous-strand mat 30,8866 1,7579 0,3816 1,7855 1,068 4,999 3,5 16,2 Thesymbolsusedinthetablearedefinedasfollows: X isthemeanv

47、alue; s X isthestandarddeviationfromthemean; V r isthewithin-laboratorycoefficientofvariationforthematerialconcerned; V R isthebetween-laboratoryreproducibility,expressedasthecoefficientofvariation; r isthewithin-laboratorycriticalintervalbetweentwotestresults(=2,8 Vr); R isthebetween-laboratorycrit

48、icalintervalbetweentwotestresults(=2,8 V R ). Thedataindicategenerallygoodwithin-laboratoryrepeatabilityV r butshowwidervariationofthebetween- laboratoryreproducibilityV R.BS ISO 3374:2000 BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |

49、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BSI British Standards Institution BSI is the independent national body responsible for preparing British Standards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter. Revisions British Standards are updated by amendment or revision. Users of British Standards should make sure that they possess