【英文标准名称】:StandardTestMethodforMeasuringSolutionViscosityofPolymerswithaDifferentialViscometer
【原文标准名称】:差示粘度计测量高聚物溶液粘度的标准试验方法
【标准号】:ASTMD5225-1998(2003)
【标准状态】:现行
【国别】:
【发布日期】:1998
【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】:D20.70
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:高聚物;粘度;塑料;试验
【英文主题词】:differentialsolutionviscosity;differentialviscometer;polymersolutionviscosity
【摘要】:Solutionviscosityvaluesforpolymersarerelatedtotheaveragemolecularsizeofthatportionofthepolymerwhichdissolvesinthesolvent.1.1Thistestmethodcoversthedeterminationofthesolutionviscosityofpolymersusingadifferentialorthemodifieddifferentialviscometer.Itisapplicabletoallpolymersthatdissolvecompletelywithoutchemicalreactionordegradationtoformsolutionsthatarestablewithtimeandtemperature.Resultsofthetestareusuallyexpressedasspecificviscosity,intrinsicviscosity(limitingviscositynumber),inherentviscosity(logarithmicviscositynumber),orrelativeviscosity(viscosityratio).1.2Sincethereismorethanonetypeofviscometeravailabletomeasureadifferentialpressure,followthemanufacturersdirectionsapplicabletotheequipmentbeingused.1.3ThesolutionviscosityvaluesarecomparablewiththoseobtainedusingaglasscapillaryofTestMethodD2857.Thistestmethoddiffersfromtheglasscapillaryinthatthesolventandthesolutionarecomparedatthesametimethatatestisrun.Withaglasscapillary,eachsolutionmustbereferencedbacktothesolventruninthesamecapillaryatthesametemperature.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Forspecifichazardstatements,seeSection8.Note1ThereisnoISOequivalentmethod.
【中国标准分类号】:G32
【国际标准分类号】:
【页数】:4P.;A4
【正文语种】:
基本信息
| 标准名称： | 液力偶合器 型式和基本参数 |
| 中标分类： |
机械 >>
通用零部件 >>
液压与气动装置 |
| 替代情况： | 被GB/T 5837-1993代替 |
| 发布日期： | 1900-01-01 |
| 实施日期： | 1986-11-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 出版日期： | 1900-01-01 |
| 页数： | 3页 |
适用范围
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前言
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目录
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引用标准
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所属分类： 机械 通用零部件 液压与气动装置
【英文标准名称】:Hand-heldmotor-operatedelectrictools-Safety-Part1:Generalrequirements
【原文标准名称】:手持式电动工具.安全性.第1部分:一般要求
【标准号】:UL60745-1-2007
【标准状态】:现行
【国别】:美国
【发布日期】:2007-07-31
【实施或试行日期】:
【发布单位】:美国保险商实验所(US-UL)
【起草单位】:UL
【标准类型】:()
【标准水平】:()
【中文主题词】:定义;电器;电动工具;电气工程;手工工具;家用设备;普通控制系统;动力传动;安全;安全要求;规范(验收);测试
【英文主题词】:Definition;Definitions;Electricappliances;Electrictools;Electricalengineering;Handtools;Householdequipment;Pedestrian-controlledsystems;Powerdrives;Safety;Safetyrequirements;Specification(approval);Testing
【摘要】:ThispartofIEC60745dealswiththesafetyofhand-heldmotor-operatedormagneticallydrivenelectrictools,theratedvoltageofthetoolsbeingnotmorethan250Vforsingle-phasea.c.ord.c.tools,and440Vforthree-phasea.c.tools.Sofarasispracticable,thisstandarddealswiththecommonhazardspresentedbyhandheldtoolswhichareencounteredbyallpersonsinthenormaluseandreasonablyforeseeablemisuseofthetools.Toolswithanelectricheatingelementarewithinthescopeofthisstandard.TheyshouldalsocomplywithrelevantpartsofIEC60335.Requirementsformotorsnotisolatedfromthesupply,andhavingbasicinsulationnotdesignedfortheratedvoltageofthetools,aregiveninAnnexb.Requirementsforrechargeablebattery-poweredmotor-operatedormagneticallydriventoolsandthebatterypacksforsuchtoolsaregiveninAnnexk.Thoseforsuchtoolsthatarealsooperatedand/orchargeddirectlyfromthemainsoranon-isolatedsourcearegiveninAnnexl.Hand-heldelectrictools,hereinafterreferredtoastools,whichcanbemountedonasupportorworkingstandforuseasfixedtoolswithoutanyalterationofthetoolitself,arewithinthescopeofthisstandard.RequirementsforsuchsupportsorworkingstandsaregiveninAnnexm.Thisstandarddoesnotapplyto:-hand-heldtoolsintendedtobeusedinthepresenceofexplosiveatmosphere(dust,vapourorgas);-hand-heldtoolsusedforpreparingandprocessingfood;-hand-heldtoolsformedicalpurposes(IEC60601);-heatingtoolswhicharecoveredbyIEC60335-2-45.Forhand-heldtoolsintendedtobeusedinvehiclesoronboardshipsoraircraft,additionalrequirementsmaybenecessary.Forhand-heldtoolsintendedtobeusedintropicalcountries,specialrequirementsmaybenecessary.NOTEAttentionisdrawntothefactthatinmanycountries,additionalrequirementsarespecifiedbythenationalhealthauthorities,thenationalauthoritiesresponsiblefortheprotectionoflabour,thenationalwatersupplyauthorities,etc.Addition:Addthefollowingparagraph:Thisstandarddealswithtoolsusedinnon-hazardouslocationsinaccordancewiththeNationalElectricalCode,NFPA70,andtheCanadianElectricCode,Part1,CSAC22.1,andGeneralRequirements-CanadianElectricalCode,PartII,CAN/CSA-C22.2No.0.
【中国标准分类号】:K64
【国际标准分类号】:25_140_20
【页数】:
【正文语种】:英语