【英文标准名称】:StandardTestMethodforBulkDensityandSpecificGravityofPlasticLumberandShapesbyDisplacement
【原文标准名称】:通过位移测试塑料条材和型材体密度和比重的标准试验方法
【标准号】:ASTMD6111-2003
【标准状态】:现行
【国别】:
【发布日期】:2003
【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】:试验;塑料;密度;体密度
【英文主题词】:density;plasticlumber;plasticshapes;recycledplastic;specificgravity
【摘要】:Thespecificgravityordensityofasolidisapropertythatcanbemeasuredconvenientlytofollowphysicalchangesinasample,toindicatedegreeofuniformityamongdifferentsamplingunitsorspecimens,ortoindicatetheaveragedensityofalargeitem.Variationsindensityofaparticularplasticlumberorshapesspecimenmaybeduetochangesincrystallinity,lossofplasticizer/solventcontent,differencesindegreeoffoaming,ortoothercauses.Portionsofasamplemaydifferindensitybecauseofdifferenceincrystallinity,thermalhistory,porosity,andcomposition(typesorproportionsofresin,plasticizer,pigment,orfiller).Note28212;ReferenceismadetoTestMethodD1622.Densityisusefulforcalculatingstrengthtoweightandcosttoweightratios.Ifthecross-sectionalareaofthespecimenisrequiredforfuturetestingonaparticularsample,itmaybedeterminedfromaspecificgravitymeasurement,seeNote10(Eq5).1.1Thistestmethodcoversthedeterminationofthebulkdensityandspecificgravityofplasticlumberandshapesintheir"asmanufactured"form.Assuch,thisisatestmethodforevaluatingthepropertiesofplasticlumberorshapesasaproductandnotamaterialpropertytestmethod.1.2Thistestmethodissuitablefordeterminingthebulkspecificgravityorbulkdensitybyimmersionoftheentireitemorarepresentativecrosssectioninwater.Thistestmethodinvolvestheweighingofaonepiecespecimeninwater,usingasinkerwithplasticsthatarelighterthanwater.Thistestmethodissuitableforproductsthatarewetby,butotherwisenotaffectedbywaterforthedurationofthetest.1.3Plasticlumberandplasticshapesarecurrentlymadepredominatelyfromrecycledplastics.However,thistestmethodwouldalsobeapplicabletosimilarmanufacturedplasticproductsmadefromvirginresinswheretheproductisnon-homogeneousinthecross-section.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note18212;ThereisnosimilarorequivalentISOstandard.
【中国标准分类号】:G31
【国际标准分类号】:83_140_01
【页数】:5P.;A4
【正文语种】: