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【英文标准名称】:StandardTestMethodforBulkDensityandSpecificGravityofPlasticLumberandShapesbyDisplacement
【原文标准名称】:对塑料层材和形材特殊重量和体密度的标准试验方法
【标准号】:ASTMD6111-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:D20.20
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:density;plasticlumber;plasticshapes;recycledplastic;specificgravity;Bulkdensity;Bulkspecificgravity;Displacement--plastics;Plasticlumber/shapes
【摘要】:Thespecificgravityordensityofasolidisapropertythatcanbemeasuredconvenientlytofollowphysicalchangesinasample,toindicatedegreeofuniformityamongdifferentsamplingunitsorspecimens,ortoindicatetheaveragedensityofalargeitem.Itispossiblethatvariationsindensityofaparticularplasticlumberorshapesspecimenwillbeduetochangesincrystallinity,lossofplasticizer/solventcontent,differencesindegreeoffoaming,ortoothercauses.Itispossiblethatportionsofasamplewilldifferindensitybecauseofdifferenceincrystallinity,thermalhistory,porosity,andcomposition(typesorproportionsofresin,plasticizer,pigment,orfiller).Note28212;ReferenceismadetoTestMethodD1622.Densityisusefulforcalculatingstrengthtoweightandcosttoweightratios.Ifthecross-sectionalareaofthespecimenisrequiredforfuturetestingonaparticularsample,itisacceptabletodetermineitfromaspecificgravitymeasurement,seeEq5.1.1Thistestmethodcoversthedeterminationofthebulkdensityandspecificgravityofplasticlumberandshapesintheirx201C;asmanufacturedx201D;form.Assuch,thisisatestmethodforevaluatingthepropertiesofplasticlumberorshapesasaproductandnotamaterialpropertytestmethod.1.2Thistestmethodissuitablefordeterminingthebulkspecificgravityorbulkdensitybyimmersionoftheentireitemorarepresentativecrosssectioninwater.Thistestmethodinvolvestheweighingofaonepiecespecimeninwater,usingasinkerwithplasticsthatarelighterthanwater.Thistestmethodissuitableforproductsthatarewetby,butotherwisenotaffectedbywaterforthedurationofthetest.1.3Plasticlumberandplasticshapesarecurrentlymadepredominatelyfromrecycledplastics.However,thistestmethodwouldalsobeapplicabletosimilarmanufacturedplasticproductsmadefromvirginresinswheretheproductisnon-homogeneousinthecross-section.1.4ThevaluesstatedinSIunitsaretoberegardedasstandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note18212;ThereisnoknownISOequivalenttothistestmethod.
【中国标准分类号】:G33
【国际标准分类号】:83_140_01
【页数】:4P.;A4
【正文语种】:英语