ANSI/ASTM D2893-2004 超高压润滑油的氧化特性的试验方法

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【英文标准名称】:StandardTestMethodforVisualEvaluationofGlossDifferencesBetweenSurfacesofSimilarAppearance
【原文标准名称】:类似外表的表面之间不同光泽的目视评定标准试验方法
【标准号】:ASTMD4449-1990(2004)
【标准状态】:现行
【国别】:
【发布日期】:1990
【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】:E12.11
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:光泽度(表面);外观检查(试验);试验;工艺;涂漆;评定;差别;覆层;表面;涂料
【英文主题词】:distinctnessofimage;gloss;haze;visualgloss
【摘要】:Gloss3isassociatedwiththecapacityofasurfacetoreflectmorelightinsomedirectionsthaninothers.Thedirectionsassociatedwithmirror(orspecular)reflectionnormallyhavethehighestreflectances.Glossisbestseenandanalyzedwhenthesurfacesstudiedareilluminatedbyalightsourcethatprovidesstrongcontrastingpatternsoflightanddark.Suchalightsourceisdescribedinthistestmethod.Thesimplestconceptofglossisthatitcorrespondstothemirror-likereflectancesofsurfaces.However,thedistributionsandintensitiesofthissurface-reflectedlightare(forrealmaterials)highlyvariableandaffectedbyavarietyoffactors:surfacesmoothnessandcontour,refractiveindex,absorptance,angleofincidence,and(toagenerallysmallextent)wavelength.Fromthegreatvarietyofsurface-reflectionpatternsmetinmaterialsofcommerce,ithasbeenpossibletoidentifysevensurface-reflectioncriteriaorx201C;typesofglossx201D;regularlyusedbyskilledtechnologistsforintercomparingandratingtheirproductsforgloss.Sixofthesevencriteria,orx201C;typesofgloss,x201D;areidentifiedinthesectionondefinitions.Theseventh,lusterorcontrastgloss,isseldomofconcerntothecoatingsindustry.1.1Thistestmethodcoversthevisualevaluationofglossdifferencesofcoatingsurfaces,usingspecialtypesoflampsforillumination.Itidentifiessixaspectsortypesofglossthatonemaylookforwhenusingthelamptoassessglossdifferencesbetweensurfaces.Itdescribestheconditionsforusingthelampstobestidentifysmalldifferencesineachofthesixtypesofgloss.Fourlevelsofvisualglossdifferencesaredistinguished.1.2Whilethistechniqueisusefulforbothweatheredandunweatheredspecimens,ithasnotbeenappliedtometallics.1.3ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityofwhoeverusesthisstandardtoconsultandestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:J04
【国际标准分类号】:87_040
【页数】:6P.;A4
【正文语种】:


【英文标准名称】:Plastics-Phenolicresins-DeterminationofreactivityonaB-transformationtestplate(ISO8987:2005);EnglishversionofDINENISO8987:2005
【原文标准名称】:塑料.酚醛树脂.在B转变试验板上的活化性能的测定
【标准号】:DINENISO8987-2005
【标准状态】:现行
【国别】:德国
【发布日期】:2005-12
【实施或试行日期】:
【发布单位】:德国标准化学会(DE-DIN)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:时间测量;树脂;试样制备;水;特性;材料;试验;材料试验;塑料;化学性质;酸活性;测定;强碱性;化学分析和试验;酚醛塑料模制材料;反应性树脂;涂料;浸渍物;稀释度;水稀释度;溶液;B-周期;试剂;化学反应;苯酚塑料;试验板;pH值;粘度测量;温度关系;划线平板;热固性聚合物;酚醛树脂;热塑性的;人造树脂;粘度;化学的;电气试验;活性;苯酚
【英文主题词】:Acidactivity;Alkalinity;Artificialresins;B-periods;Chemical;Chemicalanalysisandtesting;Chemicalproperties;Chemicalreactions;Determination;Dilutability;Electricaltesting;Extracts;Materials;Materialstesting;Paints;pH;Phenol;Phenolicplastics;Phenolicresins;Phenoplastmouldedmaterial;Plastics;Properties;Reactionresins;Reactivity;Reagents;Resins;Solutions;Specimenpreparation;Surfaceplates;Temperaturedependence;Testplate;Testing;Tests;Thermoplastic;Thermosettingpolymers;Timemeasurement;Viscosity;Viscositymeasurement;Water;Waterdilutability
【摘要】:ThisstandardspecifiesmethodsforthedeterminingoftheB-transformationtimeofphenolicresinsataspecifiedtemperatureandunderspecifiedconditionsonaheatedtestplate.Twomethodsaredescribed,eachwithadifferenttestplate:MethodA:platewithdepressionsintheformofsegmentsofspheres;MethodB:flatplatewithoutdepressions.
【中国标准分类号】:G31
【国际标准分类号】:83_080_10
【页数】:8P.;A4
【正文语种】:英语