作者:标准资料网 时间:2024-05-18 05:59:02   浏览:9300   来源:标准资料网

【英文标准名称】:Viscosityandviscometricfixedpointsofglass-Methodforthedeterminationofviscositybyrotationviscometers
【原文标准名称】:玻璃粘度和测定粘度固定点.第2部分:采用旋转粘度计对粘度的测定方法
【标准号】:BS7034-2-1988
【标准状态】:现行
【国别】:英国
【发布日期】:1989-01-31
【实施或试行日期】:1989-01-31
【发布单位】:英国标准学会(BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:试样制备;误差修正;玻璃;温度;时间;试验设备;校正;流速式粘度计;粘度计;动力粘度;试验条件;粘度;粘度测量;精密度;工作范围;公式;熔化
【英文主题词】:Constant;Crucibles(laboratory);Definition;Definitions;Glass;Instruments;Testing;Tests;Torque;Viscometers;Viscosity;Viscositymeasurement
【摘要】:ThispartofISO7884specifiesamethodofdetermining,bymeansofrotationviscometers,thedynamicviscosityofglassand,inparticular,theviscosity-temperaturerelationshipatanytemperatureorviscositywithintherangeofmeasurement.Thiscoverstherangesofviscosityformelting,refiningandworkingofglass.Thismethodallowsforcontinuousmeasurementsandformeasurementsundervariousshearingstresses(i.e.forthedeterminationofflowcurves)inordertocheckwhetherornottheglassbehavesasaNewtonianliquid.Dependentontheparticularviscosity-temperaturerelationshipoftheglasstested,theviscosityrangecoveredbythismethodextendsapproximatelyfrom10to10dPa·sinthetempera-turerangefromabout1600to600?thetorquenecessaryrangingfrom0,1to20N·mmaccordingtotheconstructionoftheapparatus.Themethodisapplicableiftherotationalfre-quencydoesnotexceed8s;however,atrotationalfrequen-ciesabove1sitshouldbeascertainedthatinertiaforcesarenegligible.note:*1dPa·S=1dN·s/m
【中国标准分类号】:Q30;N51
【国际标准分类号】:81_040_10
【页数】:16P.;A4
【正文语种】:英语