基本信息
标准名称: | 瓦斯抽放管路自动阻爆灭火装置技术条件 |
英文名称: | Technical conditions of automatic preventing explosion and extinguish device for the gas drainage piping |
中标分类: |
矿业 >>
矿业综合 >>
卫生、安全、劳动保护 |
ICS分类: |
电气工程 >>
特殊工作条件用电气设备 >>
易爆环境用电气设备
|
发布部门: | 中华人民共和国煤炭工业部 |
发布日期: | 1997-12-30 |
实施日期: | 1998-07-01 |
首发日期: | 1900-01-01 |
作废日期: | 1900-01-01 |
主管部门: | 中华人民共和国煤炭工业部 |
提出单位: | 煤炭工业部科技教育司 |
归口单位: | 煤炭工业部煤矿安全标准化技术委员会 |
起草单位: | 煤炭科学研究总院抚顺分院 |
起草人: | 刘景顺、余长林、董瑞端、马丕梁 |
出版社: | 中国煤炭工业出版社 |
出版日期: | 1998-07-01 |
页数: | 9页 |
适用范围
本标准规定了装置的技术要求、试验方法、检验规则及标志、包装、运翰和贮存。
本标准适用于瓦斯抽放管路自动阻爆灭火装里(以下简称装置)。
前言
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目录
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引用标准
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所属分类: 矿业 矿业综合 卫生 安全 劳动保护 电气工程 特殊工作条件用电气设备 易爆环境用电气设备
【英文标准名称】:StandardTestMethodforPlastics:DynamicMechanicalProperties:InFlexure(Three-PointBending)
【原文标准名称】:塑料的标准试验方法:动态机械性能:弯曲(三点弯曲)
【标准号】:ASTMD5023-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:D20.10
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:流动能力;弯曲测试;塑料;测试;热固性聚合物
【英文主题词】:dynamicmechanicalrheologicalproperties;elastic;flexuralviscoelasticbehavior;lineardisplacement;loss;storagemodulus;tandelta
【摘要】:Thistestmethodprovidesasimplemeansofcharacterizingthethermomechanicalbehaviorofplasticcompositionsusingverysmallamountsofmaterial.Thedataobtainedmaybeusedforqualitycontrol,researchanddevelopmentaswellastheestablishmentofoptimumprocessingconditions.Dynamicmechanicaltestingprovidesasensitivemeansfordeterminingthermomechanicalcharacteristicsbymeasuringtheelasticandlossmoduliasafunctionoffrequency,temperature,ortime.Plotsofmoduliandtandeltaofamaterialversusthesevariablescanbeusedtoprovideagraphicalrepresentationindicativeoffunctionalproperties,effectivenessofcure(thermosettingresinsystem),anddampingbehaviorunderspecifiedconditions.Thistestmethodcanbeusedtoassess:5.3.1Modulusasafunctionoftemperature,5.3.2Modulusasafunctionoffrequency,5.3.3Theeffectsofprocessingtreatment,5.3.4Relativeresinbehavioralproperties,includingcureanddamping.5.3.5Theeffectsofsubstratetypesandorientation(fabrication)onmodulus,and5.3.6Theeffectsofformulationadditiveswhichmightaffectprocessabilityorperformance.Beforeproceedingwiththistestmethod,refertothespecificationofthematerialbeingtested.Anytestspecimenpreparation,conditioning,dimensions,ortestingparameters,orcombinationthereof,coveredintherelevantASTMmaterialsspecificationshalltakeprecedenceoverthosementionedinthistestmethod.IftherearenorelevantASTMmaterialspecifications,thenthedefaultconditionsapply.1.1Thistestmethodoutlinestheuseofdynamicmechanicalinstrumentationfordeterminingandreportingthevisco-elasticpropertiesofthermoplasticandthermosettingresinsandcompositesystemsintheformofrectangularbarsmoldeddirectlyorcutfromsheets,plates,ormoldedshapes.Thedatagenerated,usingthree-pointbendingtechniques,maybeusedtoidentifythethermomechanicalpropertiesofaplasticmaterialorcompositionsusingavarietyofdynamicmechanicalinstruments.1.2Thistestmethodisintendedtoprovidemeansfordeterminingtheviscoelasticpropertiesofawidevarietyofplasticsmaterialsusingnonresonant,forced-vibrationtechniquesinaccordancewithPracticeD4065.Plotsoftheelastic(storage)modulus;loss(viscous)modulus;complexmodulusandtandeltaasafunctionoffrequency,time,ortemperatureareindicativeofsignificanttransitionsinthethermomechanicalperformanceofpolymericmaterialsystems.1.3Thistestmethodisvalidforawiderangeoffrequencies,typicallyfrom0.01to100Hz.1.4Apparentdiscrepanciesmayariseinresultsobtainedunderdifferingexperimentalconditions.Theseapparentdifferencesfromresultsobservedinanotherstudycanusuallybereconciled,withoutchangingtheobserveddata,byreportinginfull(asdescribedinthistestmethod)theconditionsunderwhichthedatawereobtained.1.5Duetopossibleinstrumentationcompliance,thedatageneratedareintendedtoindicaterelativeandnotnecessarilyabsolutepropertyvalues.1.6Testdataobtainedbythistestmethodarerelevantandappropriateforuseinengineeringdesign.1.7ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Note1ThistestmethodisequivalenttoISO6721,Part5.
【中国标准分类号】:G31
【国际标准分类号】:83_080_01
【页数】:4P.;A4
【正文语种】: