SAE AMS3654 Tubing, Electrical Insulation Light Wall, Extruded Polytetrafluorethylene (Ptfe)
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来源:标准资料网
Product Code:SAE AMS3654
Title:Tubing, Electrical Insulation Light Wall, Extruded Polytetrafluorethylene (Ptfe)
Issuing Committee:Ams P Polymeric Materials Committee
Scope:This specification covers extruded polytetrafluoroethlene (PTFE) in the form of flexible tubing. This tubing has been used typically for electrical insulating sheath up to 260 degrees C (500 degrees F), but usage is not limited to such applications.
【英文标准名称】:StandardTestMethodsforDeterminingAerobicBiodegradationofRadiolabeledPlasticMaterialsinanAqueousorCompostEnvironment
【原文标准名称】:在含水或合成环境中测定放射性标记塑料材料的需氧生物降解性的标准试验方法
【标准号】:ASTMD6340-1998(2007)
【标准状态】:现行
【国别】:
【发布日期】:1998
【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】:堆肥处理(废弃物);需氧生物降解;堆肥环境;试验;程度;生物降解能力;塑料;比例;碳;含水环境;生物氧化;污水;放射性标记;城市固体废物;塑料材料
【英文主题词】:
【摘要】:Thesetestmethodscanprovidedirectandunequivocalevidenceofaerobicbiodegradability.ThisrequiresthattheradiochemicalpurityoftheplasticisverifiedusingTestMethodD5296.Thesemethodsalsoprovidetheopportunitytodeterminetherateofbiologicaloxidationinacompletecompostingenvironmentoraqueousenvironmentbyfrequentperiodicsamplingofcarbondioxide.Thesemethodsprovidebiodegradationdataatuselevelsoftheplasticinafullcyclecompostingprocessoranaqueoussystem.1.1Thesetestmethodsdirectlydeterminetherateanddegreeofbiologicaloxidationofcarboninplasticmaterialswhenplacedinacompostingenvironmentcontainingsimulatedmunicipalsolidwasteoranaqueousenvironmentunderlaboratoryconditions.1.2TestMethodAutilizesamixedculturederivedfromthetargetenvironment(wastewater,sewagesludge,composteluant,andotherenvironmentalsources).Temperature,mixing,andaerationaremonitoredandcontrolled.1.2.1Thismethodhasthesensitivitytodeterminebiodegradationatconcentrationscommonlyfoundintheseenvironments.1.3TestMethodBstartswithfreshcompostandproceedsthroughthenormalcompostingprocesstoanearlymaturestage.Temperature,aeration;andmoisturearemonitoredandcontrolled.1.3.1Thismethodcandeterminebiodegradationatlevelsoftheplasticcommonlyexpectedinmunicipalsolidwaste.1.4Thesetestmethodsrequirethatthetargetcomponentoftheplasticmaterialbesynthesizedusingtheradioactiveisotopecarbon-14.Dependingupontheobjective,eitheraportionofthecomponentsoftheplasticorallofthecarboncanbeuniformlylabeledwithcarbon-14.Thetestmethodwilldeterminehowthatlabeledportionwillbemetabolizedandbiologicallyoxidizedbythemicroorganismsinthesystemtested.1.5Thesetestmethodscanbeappliedtoanycarbon-14labeledcompoundaswellasforplasticmaterialsthathavebeenformulatedtobiodegradeinanaturalaerobicenvironment.1.6Thesynthesisandpreparationoftheradiolabledplasticisbeyondthescopeofthesemethods.Carbon-14labeledpolymersmaybepurchasedfromanumberofcommerciallabs.1.7TherearenoISOtestmethodsthatareequivalenttothetestmethodsinthisstandard.1.8Thesafetyproblemsassociatedwithcompostandradioactivityarenotaddressedinthisstandard.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpractices.Itisalsoincumbentontheusertoconformtoalltheregulatoryrequirements,specificallythosethatrelatetotheuseofopenradioactivesources.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G31
【国际标准分类号】:13_030_40
【页数】:7P.;A4
【正文语种】:
基本信息
| 标准名称： | 醴陵玻璃干椒 |
| 发布部门： | 湖南省质量技术监督局 |
| 发布日期： | 2007-12-01 |
| 实施日期： | 2008-05-15 |
| 首发日期： | |
| 作废日期： | |
| 出版社： | 中国标准出版社 |
| 出版日期： | 2008-05-15 |
适用范围
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所属分类： 工程建设 工程建设综合 卫生 安全 劳动保护 石油及相关技术 石油和天然气的开采与加工
