【英文标准名称】:StandardTestMethodsforSamplingandTestingUntreatedPaperUsedforElectricalInsulation
【原文标准名称】:电绝缘用未浸渍纸的抽样和测试的标准试验方法
【标准号】:ASTMD202-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D09.19
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:absorption;acidity;airresistance;alkalinity;aqueousextractconductivity;aqeousextractpH;ashcontent;basisweight;board;burstingstrength;chloridecontent;conditioning;conductingpaths;density;dielectricstrength;dimensions;
【摘要】:Inthebuyer-sellerrelationshipitisnecessarythatanunderstandingexistsastotheexpectednominalcharacteristicsoftheproduct,andthemagnitudeofpermissibledeparturefromthenominalvalues.Also,itisnecessarythatanagreementbereachedastohowmanyunitsofalotcanfalloutsideofthespecificationlimitswithoutrejectionofthelot.Itisthislattersubjectthatisaddressedbythistestmethod.1.1Thesetestmethodscoverproceduresforsamplingandtestinguntreatedpapertobeusedasanelectricalinsulatororasaconstituentofacompositematerialusedforelectricalinsulatingpurposes.1.1.1Untreatedpapersarethin,fibroussheetsnormallylaiddownfromawatersuspensionofpulpedfibers(usuallycellulosic),whichmaycontainvariousamountsofnonfibrousingredients,andwhicharecalendared,ifrequired,toobtaindesiredthicknessanddensity.Nevertheless,thesetestmethodsareapplicable,generallyalthoughnotinvariably,topapersformedbyothermeans,topapersmodified(duringorafterformation)byadditions,andtopapersgivensubsequentmechanicaltreatmentssuchascreping.1.1.2Asanelectricalinsulatinganddielectricmaterial,paperisconsideredx201C;untreatedx201D;untilitissubjectedtoamanufacturingprocesssuchasdrying,impregnation,orvarnishtreatment.1.1.3Thetestmethodsgivenhereinweredevelopedspecificallyforpapershavingathicknessof0.75mm(0.030in.)orless.Anumberofthesetestmethodsarealsosuitableforuseonothermaterialssuchaspulpsorboards.RefertoTestMethodsD3376orMethodsD3394todeterminewhichtestsareapplicabletopulpsorelectricalinsulatingboards.Inthepaperindustry,someproductsinthicknessesoflessthan0.75mmaretermedx201C;paperboardx201D;.Suchproductsareincludedwithinthescopeofthesemethods.1.1.4Thesetestmethodsareapplicabletoflexiblefibrous-matmaterialsformedfromsuspensionsoffiberinfluidsotherthanwater.Thesematsmayhavethicknessesapproaching2mm,andmaycontainfibersthatarenatural,synthetic,organic,orinorganic;fillersthatarenatural,synthetic,organic,orinorganic;andflexiblepolymericbindermaterials.1.2Theproceduresappearinthefollowingsections:Procedure
Sections
ASTMorTAPPIReference(Modified)
Absorption(RiseofWater)
78to83
...
Acidity-Alkalinity-pH
45to54
E70
AirResistance
98to101
D726
AqueousExtractConductivity
55to64
...
AshContent
40to44
D586
BurstingStrength
102to107
D774
Chlorides(Water-Extractable)
165to183