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【英文标准名称】:Preparationofsteelsubstratesbeforeapplicationofpaintsandrelatedproducts-Visualassessmentofsurfacecleanliness-Representativephotographicexamplesofthechangeofappearanceimpartedtosteelwhenblast-cleanedwithdifferentabrasives
【原文标准名称】:涂料和有关产品涂层前钢基片的制备.第A1集:表面清洁度目测评定.第1部分:采用不同磨料进行喷沙除锈时钢片表面出现变化的典型照相样品
【标准号】:BS7079-A1Supplement1-1996
【标准状态】:作废
【国别】:英国
【发布日期】:1996-02-15
【实施或试行日期】:1996-02-15
【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】:彩色摄影;表面处理;喷砂清理;表面;外观检查(试验);金属覆层;特性;覆层工艺;层覆材料;腐蚀;颜色;机械清洗;防护覆层;等级(质量);钢;照片;清洁处理;表面缺陷;涂料
【英文主题词】:
【摘要】:
【中国标准分类号】:A29
【国际标准分类号】:17_040_20;25_220_10
【页数】:4P;A4
【正文语种】:英语


【英文标准名称】:StandardTestMethodforPredictingHeatBuildupinPVCBuildingProducts
【原文标准名称】:聚氯乙烯(PVC)建筑产品中预测生热性的标准试验方法
【标准号】:ASTMD4803-1997(2002)e1
【标准状态】:现行
【国别】:
【发布日期】:1997
【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】:D20.24
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:试验;锌含量;建筑;塑料;热发生
【英文主题词】:heatbuildup;PVCbuildingproducts;sunenergyabsorption;weathering
【摘要】:HeatbuildupinPVCexteriorbuildingproductsduetoabsorptionoftheenergyfromthesunmayleadtodistortionproblems.Heatbuildupisaffectedbythecolor,emittance,absorptance,andreflectanceofaproduct.Generally,thedarkerthecoloroftheproduct,themoreenergyisabsorbedandthegreateristheheatbuildup.However,evenwiththesameapparentcolor,theheatbuildupmayvaryduetothespecificpigmentsysteminvolved.Thegreatestheatbuildupgenerallyoccursinthecolorblackcontainingcarbonblackpigment.Theblackcontrolsampleusedinthistestmethodcontains2.5partsoffurnaceblackper100partsofPVCsuspensionresin.Themaximumtemperatureriseaboveambienttemperatureforthisblackis90x00B0;F(50x00B0;C)fora45x00B0;orhorizontalsurfacewhenthesunisperpendiculartothesurfaceand74x00B0;F(41x00B0;C)foraverticalsurfaceassumingthatthemeasurementsweredoneonacloudlessdaywithnowindandheavyinsulationonthebackofthespecimen.8SeeAppendixX1.Thistestmethodallowsthemeasurementofthetemperatureriseunderaspecifictypeheatlamp,relativetothatofablackreferencesurface,thuspredictingtheheatbuildupduetothesunrsquo;energy.Thetestmethodallowspredictionofheatbuildupofvariouscolorsorpigmentsystems,orboth.Thistestmethodgivesarelativeheatbuildupcomparedtoblackundercertaindefinedsevereconditionsbutdoesnotpredictactualapplicationtemperaturesoftheproduct.Thesewillalsodependonairtemperature,incidentangleofthesun,clouds,windvelocity,insulation,installationbehindglass,etc.1.1ThistestmethodcoverspredictionoftheheatbuildupinrigidandflexiblePVCbuildingproductsaboveambientairtemperature,relativetoblack,whichoccursduetoabsorptionofthesun''senergy.Note18212;Thistestmethodisexpectedtobeapplicabletoalltypesofcoloredplastics.TheresponsiblesubcommitteeintendstobroadenthescopebeyondPVCwhendataonothermaterialsissubmittedforreview.Note28212;TherearenoISOstandardscoveringtheprimarysubjectmatterofthistestmethod.1.2RigidPVCexteriorprofileextrusionsforassembledwindowsanddoorsarecoveredinSpecificationD4726.1.3RigidPVCexteriorprofilesforfencingarecoveredinSpecificationF964.1.4RigidPVCsidingprofilesarecoveredinSpecificationD3679.1.5RigidPVCsoffitprofilesarecoveredinSpecificationD4477.1.6RigidPVCandRigidCPVCplasticbuildingproductscompoundsarecoveredinSpecificationD4216.1.7Thetextofthistestmethodreferencesnotesandfootnoteswhichprovideexplanatorymaterial.Thesenotesandfootnotes(excludingthoseintablesandfigures)shallnotbeconsideredasrequirementsofthistestmethod.1.8Thevaluesstatedininch-poundunitsaretoberegardedasthestandard.1.9Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SpecificsafetyhazardstatementsaregiveninSection7.
【中国标准分类号】:Q74
【国际标准分类号】:83_140_01;83_140_99
【页数】:5P.;A4
【正文语种】: