【英文标准名称】:StandardTestMethodsforRubberCompoundingMaterials8212DeterminationofParticleSizeDistributionofRecylcedVulcanizateParticulateRubber
【原文标准名称】:橡胶化合材料的标准试验方法.再回收颗粒硫化橡胶粒径分布的测定
【标准号】:ASTMD5644-2001
【标准状态】:现行
【国别】:
【发布日期】:2001
【实施或试行日期】:
【发布单位】:美国材料与试验协会(ASTM)
【起草单位】:D11.20
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:粒度;粒径分析;橡胶;橡胶制品;试验
【英文主题词】:particlesizedistribution;ultrasoniclightopticalmicroscopictechnique;
【摘要】:Theparticulatesizedistributionofvulcanizateparticulaterubberisusedforthepurposeofassigningaproductmeshoraverageparticlesizedesignation.TheproductdesignationformeshsizefortheRo-tapmethod(MethodA,asfollows)isbasedonthesizedesignationscreenwhichallowsarangefortheupperlimitretainedofmaximum5%forupto850x03BC;m(20mesh)particles,maximum10%for600to150x03BC;m(30to100mesh),andmaximum15%for128to75x03BC;m(120to200mesh).Norubberparticlesshallberetainedonthezeroscreen(seeTable1,ClassificationD5603).ForMethodA,theweightpercentretainedonaspecificscreenisnotedwhereasinMethodB(ultrasonictechnique),thenumberofparticlesataparticularsizeiscounted.MethodBaddressesproblemsthatmaybecausedbytackinessandstaticelectricalforcesthatrecycledrubberparticlesexertoneachothertoformagglomerates,especiallyfor80meshorfinerparticles.Thismethodeliminatesagglomerateformationbyultrasonicallydispersingtheparticles.Bothmethodscanbeusedasaqualitycontroltool.1.1Thesetestmethodsdescribetheproceduresfordeterminingaverageparticlesizedistributionofrecycledvulcanizateparticulate.1.2MethodAdescribestheRo-tapsievetestmethodfor60meshorcoarserparticles.1.3MethodBdescribestheultrasonictechniquecombinedwithopticalmicroscopeespeciallysuitablefor80meshorfinerparticles.ThisprocedureisbasedonTestMethodD3849.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G34
【国际标准分类号】:83_060
【页数】:4P.;A4
【正文语种】:


【英文标准名称】:Measurementofgasflowinclosedconduits-Turbinemeters;TechnicalCorrigendum1
【原文标准名称】:封闭管道中气体流量的测量技术勘误1
【标准号】:ISO9951TechnicalCorrigendum1-1994
【标准状态】:现行
【国别】:国际
【发布日期】:1994-11
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC30
【标准类型】:()
【标准水平】:()
【中文主题词】:校正;试验;试验;性能试验;流量计;作标记;气体;煤气表;规范;容积测量;压力试验;流动;尺寸;流量测量;管;气体流动
【英文主题词】:tests;volumemeasurement;flowmeasurement;gasflow;flowmeters;tubes;gases;performancetesting;turbinemeters;flow;marking;gasmeters;dimensions;pressuretests;testing;calibration;specifications
【摘要】:
【中国标准分类号】:A52
【国际标准分类号】:17_060
【页数】:1P;A4
【正文语种】:英语