基本信息
| 标准名称： | 六氟化硫电气设备中气体管理和检测导则 |
| 中标分类： |
化工 >>
其他化工产品 >>
工业气体与化学气体 |
| 替代情况： | 被GB/T 8905-1996代替 |
| 发布日期： | 1900-01-01 |
| 实施日期： | 1988-10-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 23页 |
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前言
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引用标准
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所属分类： 化工 其他化工产品 工业气体与化学气体
【英文标准名称】:StandardTestMethodforHeatAgingofAsbestosTextiles
【原文标准名称】:石棉织物热老化的标准测试方法
【标准号】:ASTMD1573-1995(2004)e1
【标准状态】:现行
【国别】:
【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】:C17.03
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:aging;asbestos;heat;heat-aging;tensile;textile
【摘要】:Thistestmethodcoverstheevaluationofasbestostextileswithregardto(1)qualityand(2)elevatedtemperatureserviceabilitycharacteristics.Sinceasbestostextilesareusuallycomposedofblendsofasbestoswithcottonorotherorganiccarrierfibers,thelatterbeingpresentinamountsupto25%,temperaturesabove150x00B0;C(300x00B0;F)willpromotethedegradationofthecottoncontentandwillreducethestructuralreinforcementderivedtherefrom.Inthehighergradeasbestostextiles,whereinlittleornocarrierfibersareusedandinwhichthelongerasbestosfibersarenecessaryifasatisfactoryyarnistobeproduced,thedegradationinstrengthresultingfromheat-agingupto540x00B0;C(1000x00B0;F)islow.Inthecaseofthelowergradeasbestostextiles,however,whereinamountsfrom15to25%carrierfibersareincorporated,asbestosfibershavingshorterlengthsmaybeutilized.Undertherelativelylowservicetemperaturestowhichsuchmaterialsmaybesubjected,neitherthecottonnortheclothpropertiesaregreatlyaffected.However,thestrength-impartinginfluenceofthecarrierfibersisreducedatelevatedtemperaturesandtheentwiningpropertiesoftheshorterasbestosfibersprimarilyservetoestablishtheresultanttensilestrengthandotherphysicalpropertiesofthetextile.Inviewofthis,elevatedtemperaturetestsmayservetoindicatetheasbestosfibergradeorqualitythatmaybeusedinatextileconstruction.Anotheruseandperhapsmorepracticalapplicationfortheinformationtobederivedfromelevatedtemperaturestudiesistherevelationoftheabilityofasubjecttextiletowithstandknownelevatedtemperatureserviceconditions.Itwillbeappreciatedthattemperaturealonemaynotbetheonlydegratoryinfluenceinthedestructionofsuchmaterials;however,undernormaloperatingconditions,hightemperaturesareusuallythedominatingfactorsinsuchdegradation.Theresultsobtainedthroughsuchinvestigationsthereforemaybeinterpretedintermsofelevatedtemperatureserviceability.1.1Thistestmethodcoverstheheatagingofasbestostextiles.Itmaybeusedtodeterminetheresistancetothedeteriorationoftensilestrengthattemperaturesupto450C(800F).1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Warning-Breathingofasbestosdustishazardous.Asbestosandasbestosproductspresentdemonstratedhealthrisksforusersandforthosewithwhomtheycomeintocontact.Inadditiontootherprecautions,whenworkingwithasbestos-cementproducts,minimizethedustthatresults.Forinformationonthesafeuseofchrysoltileasbestos,referto"SafeUseofChrysotileAsbestos:AManualonPreventiveandControlMeasures."1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecificsafetyhazard,see1.3.
【中国标准分类号】:Q61
【国际标准分类号】:59_060_30
【页数】:3P.;A4
【正文语种】: