GB 11078-1989 电导率仪的试验溶液氯化钠溶液制备方法
作者:标准资料网 时间:2024-05-06 18:15:37 浏览:9268
来源:标准资料网
基本信息
标准名称: | 电导率仪的试验溶液氯化钠溶液制备方法 |
中标分类: |
仪器、仪表 >>
物质成分分析仪器与环境监测仪器 >>
物质成分分析仪器与环境检测仪器综合 |
替代情况: | 调整为JB/T 8278-1995 |
发布日期: | |
实施日期: | 1990-01-01 |
首发日期: | |
作废日期: | |
出版日期: | |
页数: | 14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: 仪器 仪表 物质成分分析仪器与环境监测仪器 物质成分分析仪器与环境检测仪器综合
【英文标准名称】:StandardTestMethodforCorona-TreatedPolymerFilmsUsingWaterContactAngleMeasurements
【原文标准名称】:用测量水接触角测量结果测定经电晕处理的聚合物薄膜的试验方法
【标准号】:ASTMD5946-2009
【标准状态】:现行
【国别】:美国
【发布日期】:2009
【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】:D20.19
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:contactangle;contactanglemeter;coronatreatment;goniometer;polymerfilms;surfacetreatment;water;Contactangle;Coronatreatment;Goniometer;Polymerfilms;Surfacetreatments;Wateranalysis--plasticsprocessing;Waterdroplets;Wettingt
【摘要】:Theabilityofpolymerfilmstoretaininks,coatings,adhesives,etc.isprimarilydependentonthecharacteroftheirsurfacesandcanbeimprovedbyoneofseveralsurface-treatingtechniques.Theelectricaldischargetreatment,suchascoronatreatment,hasbeenfoundtoincreasethewettingtensionofapolymerfilm.Thestrongerthetreatment,themoreactivelythesurfacereactswithdifferentpolarinterfaces.Itisthereforepossibletorelatethecontactangleofapolymerfilmsurfacetoitsabilitytoacceptandretaininks,coatings,adhesives,etc.,iftheink,coating,oradhesivecontainsthepolarfunctionalities.Contactangleinitselfisnotacompletelyacceptablemeasureofink,coating,oradhesiveadhesion.Thewettingtensionofapolymerfilmbelongstoagroupofphysicalparametersforwhichnostandardofaccuracyexists.Thewettingtensionofapolymercannotbemeasureddirectlybecausesolidsdonotchangeshapemeasurablyinreactiontosurfaceenergy.Manyindirectmethodshavebeenproposed.Differenttestmethodstendtoproducedifferentresultsonidenticalsamples.Practicaldeterminationofasolid''ssurfaceenergyusesthisinteractionofthesolidwithtestliquids.Althoughthelevelofsurfacetreatmentofpolymerfilmshasbeentraditionallydefinedintheindustryintermsofdynes/cm(mN/m),thesevaluesarederivedfromasubjectiveinterpretationoftheobservedtestliquidbehavior.Thefollowingrangesofwatercontactanglevaluescanbeusedasaguidefordefiningthelevelofsurfacetreatmentofpolyolefinsandmanyotherpolymerfilmswithinitiallowsurfaceenergies:Marginalornotreatment
>90x00B0;
Lowtreatment
85to90x00B0;
Mediumtreatment
78to84x00B0;
Hightreatment
71to77x00B0;
Veryhightreatment
x003C;71x00B0;
【英文标准名称】:Copperandcopperalloys.Plumbingfittings.Fittingscombiningotherendconnectionswithcapillaryorcompressionends
【原文标准名称】:铜和铜合金.管路接头.与带有毛细管或压力端头的其它端头连接的管接头
【标准号】:BSEN1254-4-1998
【标准状态】:现行
【国别】:英国
【发布日期】:1998-06-15
【实施或试行日期】:1998-06-15
【发布单位】:英国标准学会(GB-BSI)
【起草单位】:BSI
【标准类型】:()
【标准水平】:()
【中文主题词】:毛细管接头;毛细管焊接配件;压合接头;连接尺寸;连接;铜;铜合金;定义(术语);名称与符号;尺寸公差;尺寸规格;尾端件;配件;法兰管件;流体设备;检验;极限偏差;作标记;材料;最大;管联接器;管道配件;管连接;管线;压力;螺纹管接头;软钎焊连接;焊接;规范(验收);温度;试验;试验要求;厚度;螺纹;公差(测量);管末端;给水(建筑物)
【英文主题词】:Capillaryfittings;Capillarysolderingfittings;Compressionfittings;Connectingdimensions;Connections;Copper;Copperalloys;Definitions;Designations;Dimensionaltolerances;Dimensions;Endpieces;Fittings;Flangedfittings;Fluidequipment;Inspection;Limitdeviations;Marking;Materials;Maximum;Pipecouplings;Pipefittings;Pipejunctions;Pipes;Pressure;Screwedfittings;Solderedjoints;Solderings;Specification(approval);Temperature;Testing;Testingrequirements;Thickness;Threads;Tolerances(measurement);Tubeend;Watersupply(buildings)
【摘要】:ThisEuropeanStandardspecifiesmaterials,assemblydimensionsandtolerancesandtestrequirementsforfittingsofcopperandcopperalloyswithorwithoutplatingorcoating.Maximumpermissibletemperaturesandpressuresarealsoestablished.ThispartofEN1254specifiesconnectionenddimensionsforfittingscombiningcapillaryand/orcompressionendswithothertypesofconnectingends.
【中国标准分类号】:H62
【国际标准分类号】:23_040_40
【页数】:14P.;A4
【正文语种】:英语