【英文标准名称】:StandardPracticeforIn-VitroEnvironmentalConditioningofPolymerMatrixCompositeMaterialsandImplantDevices
【原文标准名称】:聚合物基体复合材料和植入装置的实验室条件下环境调节标准实施规程
【标准号】:ASTMF1634-1995(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:1995
【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】:F04.15
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:acceleratedconditioning;composite;diffusion;environmentalconditioning;fiber;implantdevices;moistureabsorption;polymer;Acceleratedaging/testing--plastics;Acceleratedaging/testing--surgicaldevices/applications;Composites--surgicalim
【摘要】:TheconditioningprocedurescoveredinthispracticeprovidemethodsforsaturatingPMCspecimensinaliquidenvironmentpriortoconductingothertestsforpropertyevaluation.Theconditioningmayaffectgeometricanddimensionalchangesinspecimens.Insomeseverecases,chemicalchangesmayoccurinthefiber,polymerandfiber-polymerinterphaseandinterface.CautionmustbetakenifProcedureB(10.2,ProcedureBx2014;AcceleratedMoistureSaturationatElevatedTemperature)isfollowedtoconditionPMCspecimensatanelevatedtemperature.Physicalandchemicalreactionsinmaterialsarenormallytemperaturedependent.Anincreaseinexperimentaltemperaturemayaccelerateadesirablemoisturediffusionprocess.However,elevatedtemperaturesabove37x00B0;Cmayalsocauseundesirablereactionsthatdonotrepresentappropriateresponsesofmaterialsat37x00B0;C.Consequently,apilotstudyisrecommendedinProcedureBtodetermineifaselectedelevatedtemperaturecanbeusedforacceleratedconditioning.Ifthepropertiesofmaterialsaredeterminedtobeirreversiblyaffectedbythispilotstudyattheselectedelevatedtemperature,theneitheranappropriatelowerelevatedtemperatureshouldbedeterminedbyrepeatingthepilotstudy,orProcedureBshouldnotbeused.1.1Thispracticecoverstwoproceduresforconditioningnon-absorbablepolymermatrixcomposite(PMC)materialsandimplantdevicesinaliquidenvironmenttoobtainastateofsaturation.1.2ThepurposeofthispracticeistostandardizemethodsandreportingproceduresforconditioningPMCmaterialsandimplantdevices(PMCspecimens)inauserselectedliquidenvironmentpriortoconductingsubsequenttests.Itisnotthepurposeofthispracticetodeterminethediffusioncoefficientsoractualsaturationlevelsofagivenliquidintothematerialsanddevices.Forthesedeterminations,otherprocedures,suchasTestMethodD5229,maybefollowed.1.3Diffusionofliquidintoasolidmaterialisaslowprocess.Whilethetimenecessarytoachievesaturationat37x00B0;Cmaybesufficientlyshortforthinspecimens,suchasfracturefixationplates,itmaybeprohibitivelylonginthicksections,suchasfemoralcomponentsforhiparthroplasty.However,thediffusionprocessmaybeacceleratedatanelevatedtemperature.Consequently,twoseparateprocedures(ProceduresAandB)arepresentedinthispractice.ProcedureAcoversexposingthespecimentothedesiredconditioningenvironmentat37x00B0;C.ProcedureBprescribesamethodtoacceleratethediffusionprocessbyconditioningthespecimenataselectedelevatedtemperature.1.4Thispracticedoesnotspecifythetestenvironmenttobeusedforconditioning.However,thepHvalueofimmersionliquidshallbemaintainedat7.4x00B1;0.2tosimulatetheinvivoenvironment.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:C45
【国际标准分类号】:11_040_40
【页数】:5P.;A4
【正文语种】:英语
基本信息
| 标准名称： | 调整垫圈 尺寸 |
| 英文名称： | Adjustment washer - Dimensions |
| 中标分类： |
机械 >>
金属切削机床 >>
机床辅具与附件 |
| ICS分类： |
机械制造 >>
机床 >>
机床综合
|
| 替代情况： | JB 3523-1983 |
| 发布日期： | 1999-05-20 |
| 实施日期： | 2000-01-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 归口单位： | 机械科学研究院 |
| 出版日期： | 1900-01-01 |
| 页数： | 2 页 |
| 批文号： | 国机管[1999]282号 |
适用范围
JB/T 3411.112-1999
前言
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目录
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引用标准
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所属分类： 机械 金属切削机床 机床辅具与附件 机械制造 机床 机床综合