ASTM D876-2000(2007)e1 电绝缘用非硬质聚氯乙烯管的标准试验方法

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【英文标准名称】:StandardTestMethodsforNonrigidVinylChloridePolymerTubingUsedforElectricalInsulation
【原文标准名称】:电绝缘用非硬质聚氯乙烯管的标准试验方法
【标准号】:ASTMD876-2000(2007)e1
【标准状态】:现行
【国别】:
【发布日期】:2000
【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】:D09.07
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:brittlenesstemperature;corrosion;dielectricbreakdownvoltage;dimensions;electricalinsulation;flammability;oilresistance;penetration;poly(vinylchloride);PVC;temperaturetests;tensionproperties/tests;tubing;vinylchloridepolymer;volumeresistivity
【摘要】:Thesetestmethodsincludemostofthetestmethodsthatareconsideredimportanttocharacterizenonrigidvinylchloridepolymertubing.Whiletheyweredevelopedinitiallyforthistypeofextrudedtubing,theiruseisnotlimitedtothistypeoftubing.Variationsinthesetestmethodsoralternatecontemporarymethodsmaybeusedtodeterminethevaluesforthepropertiesinthisstandardprovidedsuchmethodsensurequalitylevelsandmeasurementaccuracyequaltoorbetterthanthoseprescribedherein.Itistheresponsibilityoftheorganizationsusingalternatetestmethodstobeabletodemonstratethiscondition.Incasesofdispute,thetestmethodsspecifiedhereinshallbeused.Note28212;Provisionforalternatemethodsisnecessarybecauseof(1)thedesiretosimplifyproceduresforspecificapplicationswithoutalteringtheresult,and(2)thedesiretoeliminateredundanttestingandusedatageneratedduringmanufacturingprocesscontrol,includingthatgeneratedunderStatisticalProcessControl(SPC)conditions,usingequipmentandmethodsotherthanthosespecifiedherein.Anexamplewouldbetheuseoflasermicrometersoropticalcomparatorstomeasuredimensions.1.1Thesetestmethodscoverthetestingofgeneral-purpose(GradeA),low-temperature(GradeB),andhigh-temperature(GradeC)nonrigidvinylchloridepolymertubing,oritscopolymerswithothermaterials,foruseaselectricalinsulation.Forthepurposeofthesetestmethodsnonrigidtubingshallbetubinghavinganinitialelongationinexcessof100%atbreak.Note1ThesetestmethodsaresimilarbutnotidenticaltothoseinIEC60684-2.1.2Thevaluesstatedininch-poundunitsaretoberegardedasthestandard,excepttemperature,whichshallbestatedindegreesCelsius.Valuesinparenthesesareforinformationonly.1.3Theproceduresappearinthefollowingsections:Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazardstatements,seeSection.1.4Thisisafire-test-responsestandard.Thetestproceduredescribedmeasurestheresistanceofthetubingtoignitionorthespreadofflameafterignitionwhentestedunderthespecifiedconditions.1.5Thisstandardisusedtomeasureanddescribetheresponseofmaterials,products,orassembliestoheatandflameundercontrolledconditions,butdoesnotbyitselfincorporateallfactorsrequiredforfirehazardorfireriskassessmentofthematerials,products,orassembliesunderactualfireconditions.1.6Theeffectofelevatedtemperatureisindicatedbythechangesinultimateelongationandweightcausedbyexposureofthetubingtoelevatedtemperaturesforaspecifiedtimeundercontrolledconditionsofaircirculation.
【中国标准分类号】:K15
【国际标准分类号】:29_035_20
【页数】:13P.;A4
【正文语种】:


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基本信息
标准名称:制造用木模通用部件结构图
中标分类: 机械 >> 加工工艺 >> 铸造
发布日期:
实施日期:2001-10-01
首发日期:
作废日期:
出版日期:
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所属分类: 机械 加工工艺 铸造
基本信息
标准名称:管道仪表流程图隔热、保温、防火和隔声代号
中标分类:
ICS分类:
发布日期:1900-01-01
实施日期:1900-01-01
首发日期:1900-01-01
作废日期:1900-01-01
出版日期:1900-01-01
页数:4页
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前言

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所属分类: