JB/T 875-1999 醇酸晾干覆盖漆

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基本信息
标准名称:醇酸晾干覆盖漆
英文名称:Air-dried alkyd coating varnish
中标分类: 电工 >> 电工材料和通用零件 >> 电工绝缘材料及其制品
替代情况:JB 875-1980
发布部门:中华人民共和国机械工业部
发布日期:1999-08-06
实施日期:2000-01-01
首发日期:1900-01-01
作废日期:1900-01-01
提出单位:全国绝缘材料标准化技术委员会
归口单位:全国绝缘材料标准化技术委员会
起草单位:西安绝缘材料厂等
起草人:杜超云、李树连
出版社:机械工业出版社  
出版日期:2000-01-01
页数:4页
适用范围

本标准规定了醇酸晾干覆盖漆的型号、要求、试验方法、检验规则、包装、标志、贮存和运输。
本标准适用于植物油改性醇酸树脂溶解于200号石油溶剂和二甲苯等溶剂中而成的黄至褐色晾飞或低温千燥漆。

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所属分类: 电工 电工材料和通用零件 电工绝缘材料及其制品
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MIL-C-13486/7, MILITARY SPECIFICATION SHEET CABLE, SPECIAL PURPOSE, ELECTRICAL: LOW TENSION, HEAVY DUTY MULTIPLE CONDUCTORS UNSHIELDED (2 JUN 1964)., the complete requirements for procuring the cable described herein shall consist of this document and the issue in effect of Specification MIL-C-13486.【英文标准名称】:StandardTestMethodforDeterminationof2,4-TolueneDiisocyanate(2,4-TDI)and2,6-TolueneDiisocyanate(2,6-TDI)inWorkplaceAtmospheres(1-2PPMethod)
【原文标准名称】:测定工作场所大气中2,4-二异氰酸甲苯(2,4-TDI)和2,6-二异氰酸甲苯(2,6-TDI)的标准试验方法
【标准号】:ASTMD5836-2008
【标准状态】:现行
【国别】:美国
【发布日期】:2008
【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】:D22.04
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:2,4-toluenediisocyanate;2,6-toluenediisocyanate;1-(2-Pyridyl)piperazine;2,4-TDI;2,6-TDI;airmonitoring;high-performanceliquidchromatography;samplingandanalysis;workplaceatmospheres;Airmonitoring;HPLC(highperformanceliquidchroma
【摘要】:Diisocyanatesareusedintheproductionofpolyurethanefoams,plastics,elastomers,surfacecoatings,andadhesives(5,6).IthasbeenestimatedthattheproductionofTDIwillsteadilyincreaseduringthefutureyears.Diisocyanatesareirritantstoeyes,skin,andmucousmembraneandarerespiratorysensitizers.Chronicexposuretolowconcentrationsofdiisocyanatesproducesanallergicsensitizationwhichmayprogressintoasthmaticbronchitis(7,8).TheOccupationalSafetyandHealthAdministration(OSHA)hasapermissibleexposurelimit(PEL)for2,4-TDIof0.02ppmor0.14mg/m3asaceilinglimit.ThereisnoOSHAPELfor2,6x2013;TDI(9).TheAmericanConferenceofGovernmentalIndustrialHygienists(ACGIH)hasatimex2013;weightedaverage(TWA)ThresholdLimitValue(TLV)of0.005ppmor0.036mg/m3andashort-termexposurelimit(STEL)of0.02ppmor0.14mg/m3foreither2,4x2013;TDI,or2,6x2013;TDI,orforamixtureof2,4x2013;and2,6x2013;TDI(10).Thisproposedtestmethodhasbeenfoundsatisfactoryformeasuring2,4and2,6-TDIlevelsintheworkplace.1.1Thistestmethoddescribesthedeterminationof2,4-toluenediisocyanate(2,4-TDI)and2,6-toluenediisocyanate(2,6-TDI)inairsamplescollectedfromworkplaceatmospheresinacassettecontainingaglass-fiberfilterimpregnatedwith1-(2-pyridyl)piperazine(1-2PP).Thisprocedureisveryeffectivefordeterminingthevaporcontentofatmospheres.AtmospherescontainingaerosolscauseTDIresultstobeunderestimated.1.2Thistestmethodusesahigh-performanceliquidchromatograph(HPLC)equippedwithafluorescenceoranultraviolet(UV)detector(1-4).,1.3Thevalidatedrangeofthetestmethod,aswritten,isfrom1.4to5.6x03BC;gof2,4-TDIand2,6-TDIwhichisequivalenttoapproximately9.8to39ppbfor2,4-TDIand2,6-TDIbasedona20-Lairsample.TheHPLCmethodusinganUVdetectoriscapableofdetecting0.078x03BC;gof2,4-TDIand0.068x03BC;gof2,6-TDIina4.0-mLsolventvolume,whichisequivalentto0.55ppbfor2,4-TDIand0.48ppbfor2,6-TDIbasedona20-Lairsample.1.4Theisomersof2,4-TDI,and2,6-TDI,canbeseparatedutilizingareversedphasecolumnfortheHPLCmethod.Becauseindustrialapplicationsemployanisomericmixtureof2,4-and2,6-TDI,theabilitytoachievethisseparationisimportant.1.5ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.6Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.SeeSection9forspecificprecautions.
【中国标准分类号】:C70
【国际标准分类号】:
【页数】:5P.;A4
【正文语种】:英语