ASTM D5902-2005 橡胶的标准试验方法.用碘值法测定氢化丁腈橡胶中的残留不饱和物

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【英文标准名称】:StandardTestMethodforRubber-DeterminationofResidualUnsaturationinHydrogenatedNitrileRubber(HNBR)byIodineValue
【原文标准名称】:橡胶的标准试验方法.用碘值法测定氢化丁腈橡胶中的残留不饱和物
【标准号】:ASTMD5902-2005
【标准状态】:现行
【国别】:
【发布日期】:2005
【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】:D11.11
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:弹性体;碘值;丁腈橡胶;试验
【英文主题词】:HNBR;iodinevalue;residualunsaturation;
【摘要】:Hydrogenatednitrilerubbersareavailableatdifferentlevelsofunsaturationanddifferentacrylonitrilecontent.Highlysaturatedgradesofferoptimumresistancetoaging,suchasexposuretoheat,ozoneandchemicals,andcanbecuredeffectivelyonlywithperoxidesorhighenergyradiation.Partiallyunsaturatedgradescanbecuredbysulfursystemsinadditiontoperoxidesandhighenergyradiation.Thistestmethodprovidesatechniquetodeterminetheunsaturationlevelofhydrogenatednitrilerubbersintheraw,unvulcanizedstate.Itcanbeusedforresearchanddevelopment,qualitycontrol,andrefereepurposes.1.1ThistestmethodcoverstheWiijsprocedureforthedeterminationofunsaturation(iodinevalue)inhydrogenatednitrilerubbers.1.2Thistestmethodisapplicableonlytothosehydrogenatednitrilerubbersderivedfromcopolymersofacrylonitrileandbutadiene.1.3IodinevaluesarereportedincentigramsofiodinepergramofHNBR[cg(I2)/g].Higheriodinevaluesindicatehigherlevelsofunsaturation.1.4Thistestmethodisappropriateforcalculatingthepercentresidualunsaturationofhydrogenatednitrilerubberiftheiodinevalueofthebasepolymerbeforehydrogenationhasbeendetermined.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:G34
【国际标准分类号】:71_040_40;83_060
【页数】:3P.;A4
【正文语种】: