【英文标准名称】:StandardPracticeforFluorescentUltraviolet(UV)ExposureofPhotodegradablePlastics
【原文标准名称】:照相级塑料制品的荧光紫外线曝光的标准实施规程
【标准号】:ASTMD5208-2009
【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】:D20.96
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:degradation;exposure;fluorescentUV;lightexposure;ultraviolet;Degradation--plastics;FluorescentUV-lightapparatus;Lightexposure--plastics;Photodegradation;Ultraviolet(UV)analysis--plastics;NumberCode83.080.01(Plastingeneral)
【摘要】:Materialsmadefromphotodegradableplasticsareintendedtoshowrelativelyrapiddeteriorationofchemical,physical,andmechanicalpropertieswhenexposedtolight,heat,andwaterafterfulfillingtheirintendedpurpose.Thispracticeisintendedtoinducepropertychangesassociatedwithconditionsthatmightbeexperiencedwhenthematerialisdiscardedaslitter,includingtheeffectsofsunlight,moisture,andheat.Theexposureusedinthispracticeisnotintendedtosimulatethedeteriorationcausedbylocalizedweatherphenomenasuchasatmosphericpollution,biologicalattack,andsaltwaterexposure.Cautions8212;Variationinresultsmaybeexpectedwhenoperatingconditionsarevariedwithintheacceptedlimitsofthispractice.Therefore,noreferencetotheuseofthispracticeshouldbemadeunlessaccompaniedbyareportpreparedinaccordancewithSection9thatdescribesthespecificoperatingconditionsused.RefertoPracticeG151fordetailedinformationonthecaveatsapplicabletouseofresultsobtainedinaccordancewiththispractice.Note38212;Additionalinformationonsourcesofvariabilityandonstrategiesforaddressingvariabilityinthedesign,executionanddataanalysisoflaboratoryacceleratedexposuretestsisfoundinGuideG141.Exposureofasimilarmaterialofknownperformance(acontrol)atthesametimeasthetestspecimensprovidesastandardforcomparativepurposes.Useofacontroltorankthestabilityoftestmaterialsgreatlyimprovesagreementbetweendifferentlaboratories.,Itisrecommendedthatatleastthreereplicatesofeachmaterialevaluatedbeexposedtoallowforstatisticalevaluationofresults.TestresultswilldependuponthecarethatistakentooperatetheequipmentinaccordancewithPracticeG154.Significantfactorsincluderegulationoflinevoltage,temperatureoftheroominwhichthedeviceoperates,temperaturecontrol,andconditionandageofthelamps.1.1ThispracticecoversthespecificproceduresapplicableforfluorescentUltraviolet(UV)exposureofphotodegradableplasticsconductedinaccordancewithPracticesG151andG154.Thispracticealsocoversthepreparationoftestspecimensandtheevaluationoftestresults.Note18212;PreviousversionsofthispracticereferencedfluorescentUVdevicesdescribedbyPracticeG53,whichdescribedveryspecificequipmentdesigns.PracticeG53hasbeenwithdrawnandreplacedbyPracticeG151,whichdescribesperformancecriteriaforallexposuredevicesthatuselaboratorylightsourcesandbyPracticeG154,whichgivesrequirementsforexposingnonmetallicmaterialsinfluorescentUVdevices.1.2PracticeD4329coversfluorescentUVexposuresofplasticsintendedforlongtermuseinoutdoorapplications.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note28212;ThereisnoknownISOequivalenttothispractice.
【中国标准分类号】:G31
【国际标准分类号】:
【页数】:5P.;A4
【正文语种】:英语
基本信息
标准名称: | 实验室设备 电源系统 |
英文名称: | Laboratory equipment power supply system |
中标分类: |
轻工、文化与生活用品 >>
文教、体育、娱乐用品 >>
办公用品及办公机具 |
发布部门: | 中华人民共和国教育部 |
发布日期: | 2004-07-23 |
实施日期: | 2005-04-01 |
首发日期: | |
作废日期: | |
提出单位: | 全国教学仪器标准化技术委员会 |
归口单位: | 全国教学仪器标准化技术委员会 |
起草单位: | 教育部教学仪器研究所、长沙行知教学实验室设备实业有限公司、长沙希望教学实验电源设备厂、北京丽日办公服务器有限公司 |
起草人: | 沈英琪、刘内安、吴同武、孙和生、陈雅平、姜成 |
出版日期: | 2005-04-01 |
页数: | 11页 |
适用范围
本标准规定了学校实验室设备电源系统(简称电源系统)的分类与命名、要求、试验方法、检验规则、标志、标签、使用证明书、包装、运输、贮存。
本标准适用于小学实验室中固定在实验台(桌)上教师可控制的电源系统,不适用于中小学实验室中独立使用的电源。
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所属分类: 轻工 文化与生活用品 文教 体育 娱乐用品 办公用品及办公机具