【英文标准名称】:StandardTestMethodforEvaluatingDegreeofSurfaceDisfigurementofPaintFilmsbyMicrobial(FungalorAlgal)GrowthorSoilandDirtAccumulation
【原文标准名称】:通过真菌(真菌类的或藻类的)生长或污物和污垢堆积来评定漆膜表面损坏程度的标准试验方法
【标准号】:ASTMD3274-1995(2002)
【标准状态】:现行
【国别】:
【发布日期】:1995
【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】:D01.28
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:覆层;涂料;涂漆;表面;工艺;测定;验收检验;污染
【英文主题词】:algal;disfigurement;fungal;photographicstandard
【摘要】:Thegrowthoffungiandalgaeinandonthesurfaceofpaintfilmsrepresentsamajorcauseofdiscolorationordisfigurementofpaintedsurfaces.Becauseoftheirdarkpigmentation,itisfrequentlydifficulttodistinguishfungiandalgaefromsoilordirtparticles.Theuseofmagnificationofasmuchas100x00D7;affordseasydistinguishabilityamongfungalspores,fungalmycelia,algae,anddirtandisrecommendedincaseswheresuchdifficultyisapparent.Dirtaccumulationobservedonspecimenscanoccurmorereadilywithcoatingsformulatedatlowerpigmentvolumeconcentrationorthosecontainingsofterresins.UseofPhotographicStandards:34.3.1Thephotographicreferencestandardsthatarepartofthistestmethodareforillustrationpurposesandshouldbeusedforvisualcomparisons.4.3.2ThephotographicstandardsillustratedinFig.4ratethedisfigurementofpaintfilmsfrom0to8.Aratingof10wouldindicateafilmtotallyabsentofdisfigurementbyparticulatematter.4.3.3Theratingsusedinthisstandardmorecloselymatchanonlinearscale.FIG.4DisfigurementRatings1.1Thephotographicreferencestandardsavailableforusewiththistestmethodprovideanumericalbasisforratingthedegreeoffungalandalgalgrowthorsoilanddirtaccumulationonpaintfilms.1.2Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G50
【国际标准分类号】:87_040
【页数】:4P.;A4
【正文语种】: