ASTM D4242-2007 热固涂料粉的倾斜板流量用标准试验方法

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【英文标准名称】:StandardTestMethodforInclinedPlateFlowforThermosettingCoatingPowders
【原文标准名称】:热固涂料粉的倾斜板流量用标准试验方法
【标准号】:ASTMD4242-2007
【标准状态】:现行
【国别】:
【发布日期】:2007
【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】:D01.51
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:涂层;电气工程;电绝缘;绝缘件;粉末;测试;热固性聚合物
【英文主题词】:coatingpowder;pelletflow;pillflow;plateflow;powdercoating;thermosetting
【摘要】:Thistestmethodisusefulforselectingcoatingpowdersofsimilarcharacteristicsofmeltflowunderminimalshear.Itisnotrecommendedasanabsolutemeasurement,butratherasacomparativemeasurementofsamplesonthesamepanelmeasuredatthesametime.1.1Thistestmethodspecifiesamethodfordeterminingtheflowcharacteristicsofafusedthermosettingcoatingpowderdownaplaneinclinedatasetangletothehorizontal.Thetestgivesanindicationofthedegreeofmeltflowthatmayoccurduringthecuringofthecoatingpowder.Thischaracteristiccontributestothecoherenceofthecoating,toitssurfaceappearanceandtothedegreeofcoverageoversharpedges(seeTestMethodD2967),however,itshouldnotbeusedasthesolefactorforjudgment.Thetestactsasausefulmethodforcheckingforbatchtobatchvariationinthebehaviorofagivencoatingpowder.Correlationbetweentheresultsfromcoatingpowdersofdifferingcompositionisnottobeexpected.Thismethodisunlikelytoyieldmeaningfulresultswithcoatingpowderswhichhavegeltimesoflessthanoneminuteatthetesttemperature(seeTestMethodD4217).Ovendrafts,angleofinclinationandpelletvariationssignificantlyaffectresultsmakinginter-labreproducibilitysomewhatdifficulttocorrelate.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesandtodeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G51
【国际标准分类号】:83_080_10
【页数】:3P.;A4
【正文语种】: