【英文标准名称】:StandardSpecificationforPartsMachinedfromPolychlorotrifluoroethylene(PCTFE)andIntendedforGeneralUse
【原文标准名称】:聚氯三氟乙烯(PCTFE)加工制零件和通用零件的标准规范
【标准号】:ASTMD7211-2006
【标准状态】:现行
【国别】:
【发布日期】:2006
【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】:D20.15.12
【标准类型】:(Specification)
【标准水平】:()
【中文主题词】:机械制造的;聚氯三氟乙烯
【英文主题词】:annealing;dimensionalstability;finishedparts;PCTFE;polychlorotrifluoroethylene
【摘要】:1.1Thisspecificationisintendedtobeameansofcallingoutfinishedmachinedpartsreadyforcommercialuse.1.2Thisspecificationestablishesrequirementsforpartsmachinedfromunplasticized,100%polychlorotrifluoroethylene(PCTFE)homopolymers.1.3ThisspecificationdoesnotcoverpartsmachinedfromPCTFEcopolymers,PCTFEfilmortapelessthan0.25-mm[0.010-in.]thick,ormodifiedPCTFE(containingpigmentsorplasticizers).1.4Thisspecificationallowsforpartscontainingregrindandrecycledmaterial.1.5ThespecificationdoesnotcoverPCTFEpartsusedinaerospaceapplicationsinvolvingstorageandhandlingofoxygenmedia,airmedia,inertmedia,andcertainreactivemedia(specificallyammonia,gaseoushydrogen,andliquidhydrogen),inwhichdimensionalstability,highmolecularweight,molecularweightretention,andcrystallinitycontrolareimportantconsiderations.Foraerospacegrade,machinedPCTFEparts,useSpecificationD7194.1.6ApplicationPCTFEpartscoveredbythisspecificationaremadeof100%PCTFEresin,freeofplasticizers,fillers,orotheradditives.Thepartsmeetspecificphysicalcharacteristicsappropriatefortheirenduse,andaretypicallyusedinapplicationsrequiringgoodelectricalpropertiesorresistancetoaggressivechemicalmedia.GeneralpurposePCTFEpartsincludeseals,gaskets,valveandpumpparts(cryogenicandnoncryogenic),translucenttubing,sightglasses,flowmetertubes,heavy-walledsolidpipesandfittings,gears,cams,bearings,laboratoryware,circuitboards,electricalconnectorcoversandswitches,radomecovers,andavarietyofotherstockshapes.Theyareremovedandreplacedduringnormalmaintenanceprocedures.Thepartsalsoexperiencestaticordynamicmechanicalloading,andtemperaturesrangingfromcryogenictotemperaturesatorabovetheglasstransitiontemperature,Tg=55C[131F].Note1Quick-quenchedPCTFEwillpotentiallyexhibitdimensionalrelaxationinthevicinityofTg.Note2AlthoughnorecommendationsaremaderegardingthelimitingupperusetemperatureofPCTFE,theheatdeflectiontemperatureofPCTFEasdeterminedbyTestMethodD648is126C[259F].1.7ThevaluesstatedinSIunitsaretoberegardedasstandard.Thevaluesinbracketsareforinformationonly.Thefollowingprecautionarycaveatpertainsonlytothetestmethodsportion,Section,ofthisspecification:Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note3ThereisnoequivalentISOstandard.
【中国标准分类号】:G33
【国际标准分类号】:83_140_01
【页数】:4P.;A4
【正文语种】:
基本信息
标准名称: | 商业自动化术语 |
英文名称: | Terms used in commerce automation |
中标分类: |
综合 >>
基础标准 >>
术语、符号 |
ICS分类: |
综合、术语学、标准化、文献 >>
词汇
|
替代情况: | 被GB/T 18184-2008代替 |
发布部门: | 国家质量技术监督局 |
发布日期: | 2000-08-01 |
实施日期: | 2000-01-02 |
首发日期: | 2000-08-15 |
作废日期: | 2009-06-01 |
主管部门: | 中国商业联合会 |
归口单位: | 全国商业自动化标准化技术委员会 |
起草单位: | 国家国内贸易局商用电子技术应用推广中心 |
出版社: | 中国标准出版社 |
出版日期: | 2004-04-16 |
页数: | 36页 |
书号: | 155066.1-17280 |
适用范围
本标准规定了商业自动化常用的相关名词和术语。本标准适用于商业经营管理和商业自动化系统的设计、生产、销售、使用、维修、管理、科研、教学和出版等方面。
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所属分类: 综合 基础标准 术语 符号 综合 术语学 标准化 文献 词汇