GB 6029-1985 硫化橡胶中促进剂的检定 薄层色谱法
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基本信息
| 标准名称： | 硫化橡胶中促进剂的检定 薄层色谱法 |
| 中标分类： | 化工 >> 橡胶制品及其辅助材料 >> 橡胶制品综合 |
| 替代情况： | 被GB/T 6029-1996代替 |
| 发布日期： | 1900-01-01 |
| 实施日期： | 1986-02-01 |
| 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 |
适用范围
没有内容
前言
没有内容
目录
没有内容
引用标准
没有内容
所属分类： 化工 橡胶制品及其辅助材料 橡胶制品综合
下载地址: 点击此处下载
【英文标准名称】:StandardTestMethodforDeterminingConcentrationofAirborneSingle-CrystalCeramicWhiskersintheWorkplaceEnvironmentbyPhaseContrastMicroscopy
【原文标准名称】:用相位显微术对工作环境空气中单晶陶瓷晶须浓度的测定的标准试验方法
【标准号】:ASTMD6057-1996(2006)
【标准状态】:现行
【国别】:
【发布日期】:1996
【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】:D22.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:airmonitoring;phasecontrastmicroscopy;samplingandanalysis;siliconcarbidewhiskers;singlecrystalceramicwhiskers;workplaceenvironment
【摘要】:TheSCCWmaybepresentintheworkplaceatmospherewherethesematerialsaremanufactured,processed,transported,orused.Thistestmethodcanbeusedtomonitorairborneconcentrationsoffibersintheseenvironments.Itmaybeemployedaspartofapersonalorareamonitoringstrategy.Thistestmethodisbasedondimensionalconsiderationsonly.Assuch,itdoesnotprovideapositiveidentificationofthefiberscounted.AnalysisbySEMorTEMisrequiredwhenadditionalfiberidentificationinformationisneeded.Note18212;ThistestmethodassumesthattheanalystisfamiliarwiththeoperationofPCMinstrumentationandtheinterpretationofdataobtainedusingthistechnique.Thistestmethodisnotappropriateformeasurementoffiberswithdiameterslessthanapproximately0.25x03BC;mduetovisibilitylimitationsassociatedwithPCM.TheSEMorTEMmethodsmaybeusedtoprovideadditionalsizeinformationofSCCWifneeded(refertoPracticeD6058foradditionalinformationontheuseofthesemethods).Resultsfromtheuseofthistestmethodshallbereportedalongwith95%confidencelimitsforthesamplesbeingstudied.Individuallaboratoriesshalldeterminetheirintralaboratorycoefficientofvariationanduseitforreporting95%confidencelimits(1,3,4).1.1Thistestmethodcoversthesamplingmethodsandanalysistechniquesusedtoassesstheairborneconcentrationofsingle-crystalceramicwhiskers(SCCW),suchassiliconcarbideandsiliconnitride,whichmayoccurinandaroundtheworkplacewherethesematerialsaremanufactured,processed,transported,orused.Thistestmethodisbasedonthecollectionoffibersbyfiltrationofaknownquantityofairthroughafilter.Thefilterissubsequentlyevaluatedwithaphasecontrastmicroscope(PCM)forthenumberoffibersmeetingappropriatelyselectedcountingcriteria.Thistestmethodcannotdistinguishamongdifferenttypesoffibers.Thistestmethodmaybeappropriateforotherman-mademineralfibers(MMMF).1.2Thistestmethodisapplicabletothequantitationoffibersonacollectionfilterthataregreaterthan5minlength,lessthan3minwidth,andhaveanaspectratioequaltoorgreaterthan5:1.Thedataaredirectlyconvertibletoastatementofconcentrationperunitvolumeofairsampled.ThistestmethodislimitedbythediameterofthefibersvisiblebyPCM(typicallygreaterthan0.25minwidth)andtheamountandtypeofcoincidentinterferenceparticles.1.3AmoredefinitiveanalysismaybenecessarytoconfirmtheidentityanddimensionsofthefiberslocatedwiththePCM,especiallywhereotherfibertypesmaybepresent.Suchtechniquesmayincludescanningelectronmicroscopy(SEM)ortransmissionelectronmicroscopy(TEM).TheuseofthesetestmethodsfortheidentificationandsizedeterminationofSCCWisdescribedinPracticeD6058andTestMethodsD6059andD6056.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z15
【国际标准分类号】:13_040_30
【页数】:7P.;A4
【正文语种】:
【原文标准名称】:用相位显微术对工作环境空气中单晶陶瓷晶须浓度的测定的标准试验方法
【标准号】:ASTMD6057-1996(2006)
【标准状态】:现行
【国别】:
【发布日期】:1996
【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】:D22.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:airmonitoring;phasecontrastmicroscopy;samplingandanalysis;siliconcarbidewhiskers;singlecrystalceramicwhiskers;workplaceenvironment
【摘要】:TheSCCWmaybepresentintheworkplaceatmospherewherethesematerialsaremanufactured,processed,transported,orused.Thistestmethodcanbeusedtomonitorairborneconcentrationsoffibersintheseenvironments.Itmaybeemployedaspartofapersonalorareamonitoringstrategy.Thistestmethodisbasedondimensionalconsiderationsonly.Assuch,itdoesnotprovideapositiveidentificationofthefiberscounted.AnalysisbySEMorTEMisrequiredwhenadditionalfiberidentificationinformationisneeded.Note18212;ThistestmethodassumesthattheanalystisfamiliarwiththeoperationofPCMinstrumentationandtheinterpretationofdataobtainedusingthistechnique.Thistestmethodisnotappropriateformeasurementoffiberswithdiameterslessthanapproximately0.25x03BC;mduetovisibilitylimitationsassociatedwithPCM.TheSEMorTEMmethodsmaybeusedtoprovideadditionalsizeinformationofSCCWifneeded(refertoPracticeD6058foradditionalinformationontheuseofthesemethods).Resultsfromtheuseofthistestmethodshallbereportedalongwith95%confidencelimitsforthesamplesbeingstudied.Individuallaboratoriesshalldeterminetheirintralaboratorycoefficientofvariationanduseitforreporting95%confidencelimits(1,3,4).1.1Thistestmethodcoversthesamplingmethodsandanalysistechniquesusedtoassesstheairborneconcentrationofsingle-crystalceramicwhiskers(SCCW),suchassiliconcarbideandsiliconnitride,whichmayoccurinandaroundtheworkplacewherethesematerialsaremanufactured,processed,transported,orused.Thistestmethodisbasedonthecollectionoffibersbyfiltrationofaknownquantityofairthroughafilter.Thefilterissubsequentlyevaluatedwithaphasecontrastmicroscope(PCM)forthenumberoffibersmeetingappropriatelyselectedcountingcriteria.Thistestmethodcannotdistinguishamongdifferenttypesoffibers.Thistestmethodmaybeappropriateforotherman-mademineralfibers(MMMF).1.2Thistestmethodisapplicabletothequantitationoffibersonacollectionfilterthataregreaterthan5minlength,lessthan3minwidth,andhaveanaspectratioequaltoorgreaterthan5:1.Thedataaredirectlyconvertibletoastatementofconcentrationperunitvolumeofairsampled.ThistestmethodislimitedbythediameterofthefibersvisiblebyPCM(typicallygreaterthan0.25minwidth)andtheamountandtypeofcoincidentinterferenceparticles.1.3AmoredefinitiveanalysismaybenecessarytoconfirmtheidentityanddimensionsofthefiberslocatedwiththePCM,especiallywhereotherfibertypesmaybepresent.Suchtechniquesmayincludescanningelectronmicroscopy(SEM)ortransmissionelectronmicroscopy(TEM).TheuseofthesetestmethodsfortheidentificationandsizedeterminationofSCCWisdescribedinPracticeD6058andTestMethodsD6059andD6056.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:Z15
【国际标准分类号】:13_040_30
【页数】:7P.;A4
【正文语种】:
基本信息
| 标准名称： | 卡套式直通管接头 |
| 英文名称： | Union; Assembly |
| 中标分类： | 机械 >> 通用零部件 >> 管路附件 |
| ICS分类： | 机械系统和通用件 >> 紧固件 >> 环、套管、管接头、承插 |
| 替代情况： | 替代JB 1944-1977;被GB/T 3737-2008代替 |
| 发布部门： | 国家标准局 |
| 发布日期： | 1983-06-17 |
| 实施日期： | 1984-04-01 |
| 首发日期： | 1983-06-17 |
| 作废日期： | 2008-11-01 |
| 主管部门： | 中国机械工业联合会 |
| 提出单位： | 中华人民共和国机械工业部 |
| 归口单位： | 机械工业部标准化研究所 |
| 起草单位： | 机械工业部标准化研究所 |
| 起草人： | 胡鲁生、刘德全、程振世、王慕秦 |
| 出版社： | 中国标准出版社 |
| 出版日期： | 1984-04-01 |
| 页数： | 3页 |
适用范围
本标准规定了卡套式直通管接头，适用于油、气及一般腐蚀性介质的管路系统。
前言
没有内容
目录
没有内容
引用标准
没有内容
所属分类： 机械 通用零部件 管路附件 机械系统和通用件 紧固件 环 套管 管接头 承插