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GB 12160-1990 引伸计标定与分级方法

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基本信息
标准名称:引伸计标定与分级方法
中标分类: 仪器、仪表 >> 试验机与无损探伤仪器 >> 力与变形测试仪器
替代情况:被GB/T 12160-2002代替 调整为JB/T 8289-1995
发布日期:
实施日期:1990-08-01
首发日期:
作废日期:
出版日期:
页数:10页
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所属分类: 仪器 仪表 试验机与无损探伤仪器 力与变形测试仪器
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【英文标准名称】:StandardTestMethodforDeterminingtheAnaerobicBiodegradationofPlasticMaterialsinthePresenceofMunicipalSewageSludge
【原文标准名称】:测定市政污秽沉积物现场的塑料材料厌氧生物降解能力的标准试验方法
【标准号】:ASTMD5210-1992(2007)
【标准状态】:现行
【国别】:
【发布日期】:1992
【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】:D20.96
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:塑料;试验;污泥;生物降解能力
【英文主题词】:anaerobic;biodegradation;degree(ofbiodegradation);municipal;plastics;sewage;sludge
【摘要】:Thedegreeandrateofanaerobicbiodegradabilityofaplasticmaterialinthistestmethodmaybepredictiveofthetimeperiodrequiredtoeliminatethatplasticfromtheenvironmentdependingonthesimilaritiesoftheenvironments.Withincreasinguseofplastics,disposalisamajorissue.Thistestmethodmaybeusefultoestimatethedegreeandpersistenceofplasticsinbiologicallyactiveanaerobicdisposalsites.Thistestmethoddeterminestherateanddegreeofanaerobicbiodegradationbymeasuringtheevolvedvolumeofcarbondioxideandmethane,asafunctionoftimeofexposuretoanaerobic-digestersludge.Anaerobicsewer-digestersludgefromtreatmentofclarifiersludgeatawaste-watertreatmentplantthattreatsprincipallymunicipalwasteisanacceptableactiveanaerobicenvironment(availableoverawidegeographicalarea)inwhichtotestabroadrangeofplasticmaterials.Thistestmethodmaybeconsideredanacceleratedtestwithrespecttoatypicalanaerobicenvironment,suchaslandfillsitesthatplasticsencounterinusualdisposalmethodsbecauseofthehighlyactivemicrobialpopulationofanaerobic-digestersludge.1.1Thistestmethoddeterminesthedegreeandrateofanaerobicbiodegradationofsyntheticplasticmaterials(includingformulationadditives)onexposuretoanaerobic-digestermunicipalsewagesludgefromawaste-waterplant,underlaboratoryconditions.1.2Thistestmethodisdesignedtoindexplasticmaterialsthataremoreorlessbiodegradablerelativetoapositivestandardinananaerobicenvironment.1.3Thistestmethodisapplicabletoallplasticmaterialsthatarenotinhibitorytothemicroorganismspresentinanaerobicsewagesludge.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecifichazardsaregiveninSection8.
【中国标准分类号】:Z13;G31
【国际标准分类号】:13_030_20
【页数】:5P.;A4
【正文语种】:


【英文标准名称】:StandardTestMethodforEnvironmentalStressCrackResistance(ESCR)ofPlasticTightheadDrumsNotExceeding60Gal(227L)inRatedCapacity
【原文标准名称】:额定容量不超过60加仑(227公升)的塑料密封头圆筒的耐环境应力裂开(ESCR)的标准试验方法
【标准号】:ASTMD5571-1994(2005)
【标准状态】:现行
【国别】:
【发布日期】:1994
【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】:D10.23
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:耐环境应力裂开ESCR法;额定容量不超过60加仑(227公升);航运材料;密封头圆筒;塑料密封头圆筒;包装;通用塑料;规程;使用;圆筒;容器;航运;内压力;堆码;压力试验
【英文主题词】:drum;environmentalstresscrack;internalpressure;plastic;stacking;stresscrack;tighthead
【摘要】:Theseproceduresprovideanindicationoftheenvironmentalstress-crackresistanceofplastictightheaddrums.Thistestmethodmaybeusedfordeterminingtheapplicabilityofvariousplasticresins,molddesigns,processingtechniquesandparametersforplastictightheaddrums.Environmentalstresscrackingisindicativeofwhatresultswhenacontainerisexposedtochemicalagentssuchassoaps,organics,bleaches,oranysurfaceactivesolutionswhileunderconditionsofstress.Environmentalstresscrackingisamechanismofchemicalattackthatishighlydependentuponthetestreagent,resin,drummanufacturingorprocessinghistory,exposuretemperature,andappliedstress.Thecombinationofthesefactorsmayresultineventualstresscrackfailure.Bothproceduresminimizethepotentialfortestvariabilitybyprovidingtheuserwithrigidlydefinedtestconditions.Thistestmethodmaybeusedasdesignqualificationandauditingtoolsforplastictightheaddrums.Thistestmethodisnotmeanttoprovideaquantitativevalueofmeasurement(thatis,numberofdaystofailure).Itisintendedonlyasapass/failprocedureinaccordancewithuser’specifications,orasagreeduponbetweentheuserandsupplier.Itisnotintendedasapredictororindicatoroffieldperformanceregardingtimetofailure.1.1Thistestmethodprovidesanindicationoftheenvironmentalstresscrackresistanceofplastictightheaddrumsasasummationoftheeffectsofcontainerdesign,resin,manufacturingconditions,fieldperformance,andotherfactors.1.2Thistestmethodmaybeusedtoevaluateaplasticdrum'sresistancetofailurebycrackingwheninthepresenceofchemicalandphysicalstresses.1.3Twoproceduresareprovidedasfollows:1.3.1ProcedureA8212;Internalpressurestresscrackresistancemethodtononylphenoxypoly(ethyleneoxy)ethanolsolution,astresscrackingreagent.Theinternalpressureiscontrolledataconstantelevatedpressureandtemperature.1.3.2ProcedureB8212;Top-loadstresscrackresistancemethodtononylphenoxypolyethanol,astresscrackingreagent.Thecompressivetoploadiscontrolledataconstantweightwhilemaintaininganelevatedtemperature.1.4Althoughtheseproceduresarenotdesignedtotesttheabilityoftheclosureorclosuregasketmaterialtoretainthetestreagent,theinclusionofclosurefailureasacontainerfailuremodeisoptional.However,leakagethroughaclosuremayaffecttheinternalpressurethatcouldaffectthetestresults.1.5Thistestmethoddoesnotattempttoaddressallfactorsthatcouldleadtostresscrackingofplasticdrums.Theuserofthisstandardmayuseothertestparameters,suchastoploads,chemicalreagents,etc.,asagreeduponbetweentheuserandsupplierintheeventofadrumqualificationorpurchaseagreement.1.6Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.TheSIunitsgiveninparenthesesareforinformationonly.1.7Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Specificwarningstatementsaregivenin6.2.
【中国标准分类号】:G33
【国际标准分类号】:55_140
【页数】:4P.;A4
【正文语种】: