ASTM E2408-2004 农用喷雾箱混合料的相对拉伸粘度的标准试验方法
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【英文标准名称】:StandardTestMethodforRelativeExtensionalViscosityofAgriculturalSprayTankMixes
【原文标准名称】:农用喷雾箱混合料的相对拉伸粘度的标准试验方法
【标准号】:ASTME2408-2004
【标准状态】:现行
【国别】:
【发布日期】:2004
【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】:E35.22
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:Extensionalviscosityisameasureoftheresistanceofaliquidtostretchingforces,suchasthoseoccurringduringthedisruptionofliquidfilmsandtheformationofspraysusedinagricultureandotherpurposesincludingpaintingoperationsormetalworking.ThismethodformeasurementofaScreenFactor,givesarelativevalueforextensionalviscosity,whichmaybeused:4.1.1Tocomparethepotentialfordriftcontrolofdifferentpolymers.4.1.2Tocomparetherelativeextensionalviscositycomponentofdifferentspraytankmixtures.4.1.3Todeterminetheextentofbreakdownofpolymersolutionsusedasdriftcontroladditivesduringtherecirculationofthesolutionsthroughpumpsandscreens.4.1.4TouseasaparameterintheSprayDriftTaskForceModelsfordropletsizeprediction.Itshouldalsobenotedthatmanydriftcontrolpolymersareirreversiblydestroyedduringtherecirculationofspraymixesbypumpingwithhighshearpumpssuchasgearorcentrifugalpumps.Itisadvisabletosubjectthetestmixturetosimilarpumpingregimestosimulatepracticalconditionsbeforecarryingouttheextensionalviscositytest.Measurementsofextensionalviscosityaretheonlypresentlyknownmethodofdeterminingtheextentofthisbreakdownpropertiesofdilutepolymersolutions.Thismethodisintendedtoproducearelativevalueforextensionalviscosity.Thepurposeofthemethodistocomparetheextensionalviscosityproducedbydifferentpolymertypesorconcentrationsofpolymerinspraytankmixes.1.1ThistestmethodcoversthedeterminationoftherelativeextensionalviscosityorScreenFactor(SF)ofdiluteagriculturalspraymixes.1.2Thetestcanbeusedfortankmixescontainingdissolved,emulsifiedordispersedmaterials,ormixtures.1.3Resultsmaybeaffectedbythequalityofthewaterused.Make-upwaterqualityshouldthereforebespecifiedinthepresentationofresults.1.4Propersafetyandhygieneprecautionsmustbetakenwhenworkingwithpesticideformulationstopreventskinoreyecontact,vaporinhalation,andenvironmentalcontamination.Readandfollowallhandlinginstructionsforthespecificformulationandconductthetestinaccordancewithgoodlaboratorypractice.Note1Referencestothedevelopmentofextensionalviscosityfromdissolvedpolymers,extensionalviscosityeffectsonthedropletsizedistributionofsprays,andmeasurementsofscreenfactoronrecirculatedspraymixescontainingpolymersareavailable.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:B91
【国际标准分类号】:17_060
【页数】:4P.;A4
【正文语种】:
【原文标准名称】:农用喷雾箱混合料的相对拉伸粘度的标准试验方法
【标准号】:ASTME2408-2004
【标准状态】:现行
【国别】:
【发布日期】:2004
【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】:E35.22
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:Extensionalviscosityisameasureoftheresistanceofaliquidtostretchingforces,suchasthoseoccurringduringthedisruptionofliquidfilmsandtheformationofspraysusedinagricultureandotherpurposesincludingpaintingoperationsormetalworking.ThismethodformeasurementofaScreenFactor,givesarelativevalueforextensionalviscosity,whichmaybeused:4.1.1Tocomparethepotentialfordriftcontrolofdifferentpolymers.4.1.2Tocomparetherelativeextensionalviscositycomponentofdifferentspraytankmixtures.4.1.3Todeterminetheextentofbreakdownofpolymersolutionsusedasdriftcontroladditivesduringtherecirculationofthesolutionsthroughpumpsandscreens.4.1.4TouseasaparameterintheSprayDriftTaskForceModelsfordropletsizeprediction.Itshouldalsobenotedthatmanydriftcontrolpolymersareirreversiblydestroyedduringtherecirculationofspraymixesbypumpingwithhighshearpumpssuchasgearorcentrifugalpumps.Itisadvisabletosubjectthetestmixturetosimilarpumpingregimestosimulatepracticalconditionsbeforecarryingouttheextensionalviscositytest.Measurementsofextensionalviscosityaretheonlypresentlyknownmethodofdeterminingtheextentofthisbreakdownpropertiesofdilutepolymersolutions.Thismethodisintendedtoproducearelativevalueforextensionalviscosity.Thepurposeofthemethodistocomparetheextensionalviscosityproducedbydifferentpolymertypesorconcentrationsofpolymerinspraytankmixes.1.1ThistestmethodcoversthedeterminationoftherelativeextensionalviscosityorScreenFactor(SF)ofdiluteagriculturalspraymixes.1.2Thetestcanbeusedfortankmixescontainingdissolved,emulsifiedordispersedmaterials,ormixtures.1.3Resultsmaybeaffectedbythequalityofthewaterused.Make-upwaterqualityshouldthereforebespecifiedinthepresentationofresults.1.4Propersafetyandhygieneprecautionsmustbetakenwhenworkingwithpesticideformulationstopreventskinoreyecontact,vaporinhalation,andenvironmentalcontamination.Readandfollowallhandlinginstructionsforthespecificformulationandconductthetestinaccordancewithgoodlaboratorypractice.Note1Referencestothedevelopmentofextensionalviscosityfromdissolvedpolymers,extensionalviscosityeffectsonthedropletsizedistributionofsprays,andmeasurementsofscreenfactoronrecirculatedspraymixescontainingpolymersareavailable.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:B91
【国际标准分类号】:17_060
【页数】:4P.;A4
【正文语种】:
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