【英文标准名称】:Rubber-Identificationofacceleratorsincuredanduncuredcompounds
【原文标准名称】:橡胶硫化和未硫化物中促进剂的鉴别
【标准号】:ISO10398-1998
【标准状态】:现行
【国别】:国际
【发布日期】:1998-07
【实施或试行日期】:
【发布单位】:国际标准化组织(ISO)
【起草单位】:ISO/TC45
【标准类型】:()
【标准水平】:()
【中文主题词】:化学分析和试验;橡胶;含量测定;识别;催速剂(化学);气相色谱法;硫化橡胶
【英文主题词】:Accelerators(chemical);Chemicalanalysisandtesting;Determinationofcontent;Gaschromatography;Identification;Rubber;Rubbercompounds;Vulcanizatedrubber;Vulcanizationaccelerators
【摘要】:1ThisInternationalStandardspecifiesmethodsusinggaschromatography(GC)andthinlayerchromatography(TLC)fortheseparationandidentificationofthefollowingclassesofacceleratorsinvulcanizedandunvulcanizedcompounds:—thiazoles—sulfenamides—thiuramsanddithiocarbamates—guanidines—dithiodimorpholine2When2-mercaptobenzothiazole(MBT)isidentifiedandnosulfenamidesarepresent,itisnotpossibletoestablishiftheoriginalacceleratorwasMBTand/oritssaltsor2,2'-dibenzothiazoledisulfide(MBTS)aseachoftheseacceleratorsmaybeproducedfromtheothersduringthevulcanizationprocess.3Whensulfenamidesareidentified,itisnotpossibletoestablishifMBTand/oritssaltsandMBTSarepresentastheseacceleratorsmaybeproducedfrom2-mercaptobenzothiazolesulfenamidesduringthevulcanizationprocess.4Themethodsdonotdistinguishthiuramsanddithiocarbamatesderivedfromthesameamines.5Fromthemorpholineidentificationitisnotpossibletodetermineiftheinitialacceleratoris2-morpholinothio-benzothiazole(MBS)ordithiomorpholineasmorpholinemaybeformedfromMBSanddithiodimorpholineduringthevulcanizationprocess.6Theseparationofacceleratorcompoundsfromunvulcanizedcompoundsisrelativelystraightforwardwhereasseparationfromvulcanizedcompoundsisdifficultduetothelesserabilityofsolventstopenetratethevulcanizedmatrix.7SomecompoundingingredientsmayinterferewithmethodB.InsuchcasesmethodsAorCshallbeused.
【中国标准分类号】:G34
【国际标准分类号】:83_060
【页数】:11P;A4
【正文语种】:英语


【英文标准名称】:Relaysofassessedqualitywithcontrolfailurerateforsevereenvironmentalconditions.
【原文标准名称】:用恶劣环境条件控制失效率评估质量的继电器
【标准号】:NFC45-256-1983
【标准状态】:现行
【国别】:法国
【发布日期】:1983-05-01
【实施或试行日期】:1983-05-07
【发布单位】:法国标准化协会(AFNOR)
【起草单位】:
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:
【中国标准分类号】:L25
【国际标准分类号】:29_120_70
【页数】:43P;A4
【正文语种】:其他