【英文标准名称】:StandardTestMethodsforSofteningPointofResinsDerivedfromNavalStoresbyRing-and-BallApparatus
【原文标准名称】:用环球仪测定来自松脂的树脂的软化点的标准试验方法
【标准号】:ASTME28-1999(2009)
【标准状态】:现行
【国别】:美国
【发布日期】:1999
【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】:D01.34
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:ringandball;rosin;softeningpoint;Resins;Ring-and-ballapparatus;Rosin;Softeningpoint
【摘要】:Ingeneral,withmaterialsofthesetypes,softeningdoesnottakeplaceatadefinitetemperature.Asthetemperaturerises,thesematerialsgraduallychangefrombrittleorexceedinglythickandslow-flowingmaterialstosofterandlessviscousliquids.Forthisreason,thedeterminationofthesofteningpointmustbemadebyafixed,arbitrary,andcloselydefinedmethodiftheresultsobtainedaretobecomparable.Inthesetestmethods,thesofteningpointisdefinedasthetemperatureatwhichadiskofthesampleheldwithinahorizontalringisforceddownwardadistanceof25.4mm(1in.)undertheweightofasteelballasthesampleisheatedat5x00B0;C/mininawater,glycerin,siliconeoil,ethyleneglycol/waterorglycerin/waterbath.1.1Thesetestmethodsareintendedfordeterminingthesofteningpointofresins(includingrosinandterpeneresins)andsimilarmaterialsbymeansofthering-and-ballapparatus.Note18212;Fortestingasphalts,tars,andpitches,seeTestMethodD36.1.1.1Testmethodusingthemanualringandballsofteningpointapparatus,and1.1.2Testmethodusinganautomatedringandballsofteningpointapparatus.1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thevaluesgiveninparenthesesareforinformationonly.1.3Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G31
【国际标准分类号】:87_040
【页数】:6P.;A4
【正文语种】:英语