【英文标准名称】:StandardTestMethodsforRubberDeterioration&8212;ReferenceandAlternativeMethod(s)forDeterminingOzoneLevelinLaboratoryTestChambers
【原文标准名称】:橡胶变质的标准试验方法.测定实验室测试小室内臭氧浓度的参照法和交替法
【标准号】:ASTMD4575-1999(2005)
【标准状态】:现行
【国别】:
【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】:D11.15
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:变坏;臭氧;炭黑;橡胶;含量测定;合成橡胶;试验;天然橡胶
【英文主题词】:chemical;deterioration;ozonemeasurement;rubbertest;ultraviolet
【摘要】:Generalpurposeandmanyspecialtyrubberswillundergoozonecrackingwhenexposedtoozonecontainingatmospheres,whenthetestspecimensoractualuseproductsareunderacertaindegreeoftensilestrain.Certainadditivessuchasantiozonantsandwaxesinhibitorpreventthiscracking.Variousrubbersandrubberformulationscontainingsuchadditivesarecustomarilyevaluatedunderstaticordynamictensilestraininlaboratoryozonechambers.ThisstandardprovidesforanaccurateassessmentoftheozonecontentofsuchchambersusedinTestMethodsD518,D1149,D1171,D3395andISOStandard1431I/II/III.Foradditionalinformationonozoneanalysis,refertoCodeofFederalRegulations;Title40Parts1to51.1.1Thesetestmethodscoverthefollowingthreetypesofmethodsforthedeterminationofozonecontentinlaboratorytestchambers.MethodA(UVabsorption)isspecifiedforreferenceorrefereepurposesandasameansofcalibrationforthealternativemethods;MethodB,instrumentaldevice(electrochemicalorchemiluminescence);andMethodC,wetchemicaltechniques(see).Thesemethodsareprimarilyintendedforusewithtestsfordeterminingrubberozonecrackingresistanceandthusareapplicableovertheozonelevelrangefrom25to200mPa.Note1Priorto1978,ozoneconcentrationswereexpressedinASTMD11Standardsinpartsperhundredmillion(pphm)ofairbyvolume.Seeforanexplanationofthechangetopartialpressureinmillipascals(mPa).1.2ThevaluesstatedinSIunitsaretoberegardedasthestandard.Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.Foraspecifichazardstatement,seeNote0and.Note0Warning-Ozoneisahazardouschemical.
【中国标准分类号】:G34
【国际标准分类号】:83_060
【页数】:10P.;A4
【正文语种】:


【英文标准名称】:StandardPracticeforCalculationofEquipmentMovementVelocity(EMV)
【原文标准名称】:计算移动速度的标准实施规范
【标准号】:ASTME2497-2006
【标准状态】:现行
【国别】:美国
【发布日期】:2006
【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】:ASTM
【标准类型】:()
【标准水平】:()
【中文主题词】:计算;运动;速度
【英文主题词】:Calculation;Motion;Velocity
【摘要】:
【中国标准分类号】:J40
【国际标准分类号】:25_060_20
【页数】:2P;A4
【正文语种】:英语