文档名：耐辐射高铅玻璃熔制挥发物分析及控制
摘要：用于制备耐辐射光纤面板的高铅(铅当量≥0.3)玻璃材料须具备较高的折射率、较好的X射线吸收性能、较高的可见光透过率以及良好的热稳定性和化学稳定性.但由于其高铅含量对熔制坩埚及耐火材料腐蚀性极高,且熔制过程中挥发量较高,玻璃组分不易稳定控制,目前仅国外少数企业能够高质量稳定生产.研究了玻璃熔制过程中影响挥发物的3个主要因素,有效控制挥发物的挥发率由2.00%降至0.51%左右,确定了最佳熔制温度以及通气压强,并在此条件下分别采用2种方式向玻璃中引入铅,通过能谱仪和光电子能谱仪对该高铅玻璃在熔制过程中的挥发物进行了研究,确定了其挥发物成分以铅氧化物为主,其中铅的价态以四价为主,二价为辅.
Abstract：IntroductionRadiationresistantopticalfiberpanelisakindofopticalfibermaterialdevicewithspecialfunctions.AsacorecomponentofX-rayradiology,thisfibermaterialiswidelyusedindigitalX-rayimaging,petmedicaltreatment,securityinspection,industrialnondestructivetestingandfoodsafetytesting.Theindustryentrythresholdforradiationresistantfiberopticpanelsisrelativelyhigh.Theexistingmarketofhighleadglassmaterialsforradiation-resistantopticalfiberpanelisbasicallymonopolized.Toensurehighvisiblelighttransmittance,goodthermalstability,andchemicalstabilityofglassmaterialsusedinradiationresistantfiberopticpanels,ahighercontentofPbOisintroducedintotheglasscompositiontofurtherimproveitsrefractiveindexandX-rayabsorptionperformanceInthispaper,themainfactors(i.e.,temperature,atmosphericpressureandrawmaterial)affectingthevolatilizationofPbOinthemeltofhigh-leadglassforradiation-resistantopticalfiberpanelswereanalyzed.MaterialsandmethodAyellowleadwasselectedasarawmaterialtointroduceleadintotheglass,andtheexperimentswerecarriedoutatdifferentmeltingtemperatures.Themeltingtemperaturewasoptimizedbasedontheexperimentalresults.Theatmospherepressureofcruciblekilnchangedtofurthercontrolthevolatilizationofradiation-resistantglassinthemeltingprocess.Undertheoptimalprocessconditions,amoreeffectivewaytocontrolvolatileswasexploredviachangingtheleadoxideintroductionmethod.Also,thevolatilesoftheglassmeltwithdifferentrawmaterialintroductionmethodsweredeterminedbyenergydispersivespectroscopy(EDS)andX-rayphotoelectronspectroscopy(XPS),andthemaincomponentsandcontentsofthevolatileswereanalyzed.ResultsanddiscussionInthemixedmaterialswiththesameleadoxidecontent,theglassinthemeltingprocessofvolatileamountdecreases,andthevolatilityratedecreasesfrom2.00%at1530℃to1.53%at1500℃asthemeltingtemperaturedecreases.Inaddition,whenthemeltingtemperaturedecreases<1500℃,hard-meltsubstancesintheglasssampleappearpossiblyduetotheenrichmentofCaO,LaOandPbO.At1500℃,thevolatilizingamountofglassdecreaseswiththeincreaseofatmosphericpressureincrucible,andthevolatilizingratedecreasesfrom1.53%at0MPato0.80%at0.4MPa.Whenthepressureofthegasfurtherincreases,itleadstomassivestripesonthesurfaceoftheglassliquid,affectingthequalityoftheproduct.Atthesameleadoxidecontentinthemixingmaterial,meltingtemperatureandventilationpressure,leadoxideisintroducedintotheglassbytwoapproaches,i.e.,leadisintroducedintotheglasswithyellowleadasarawmaterial,andleadisintroducedintotheglasswithredleadasarawmaterial.Basedontheresultsofcompositiontestandanalysisoftheglassmaterialobtainedbymelting,theglassinthemeltingprocessofvolatileamountdecreases,andthevolatilityratedecreasesfrom0.80%to0.51%whenredleadisusedtointroduceleadintotheglass.FromtheEDSspectraofvolatilesample,leadoxidevolatilizesinglassmaterialduringmeltingprocess.Asyellowleadisusedasarawmaterialtotheglassintroduction,thepercentageofleadatomsinthevolatilesis35.44%.Asredleadisusedasarawmaterial,thepercentageofleadatomsinthevolatilesis22.21%.TheXPSspectraofvolatilesampleswithtwodifferentleadintroductionmethodsshowthatelementleadisthemainvalencestate,thevalencestateisauxiliary.ConclusionsTheinfluencesofmeltingtemperature,ventilationpressureandrawmaterialintroductionmodeonthevolatilesintheglassmeltingprocesswereinvestigated.Atthemeltingtemperatureof1500℃,theventilationpressureof0.4MPa,andredleadasarawmaterialtointroduceleadintotheglass,thevolatileamountofvolatilesintheglassmeltingprocesswaseffectivelycontrolled,andthevolatilityofleadoxidewasreducedfrom2.00%to0.51%.Atthemeltingtemperatureof1500℃andventilationpressureof0.4MPa,redleadoryellowleadasarawmaterialtointroducelead,thevalencestateofPbelementintheglassmeltingvolatileswasmainlytetravalent,andthedivalentwasauxiliary.Thecontentratiooftetravalentleadanddivalentleadwas4.79and4.94,respectively.
作者：杨胜赟 曹振博 张梅伦 张洋 王可 韩玉 吕海风 周游 贾金升 Author：YANGShengyun CAOZhenbo ZHANGMeilun ZHANGYang WANGKe HANYu LVHaifeng ZHOUYou JIAJinsheng
作者单位：中建材光子科技有限公司,山东枣庄277000中建材光子科技有限公司,山东枣庄277000;中国建筑材料科学研究总院有限公司,北京100000
刊名：硅酸盐学报 ISTICEIPKU
Journal：JournaloftheChineseCeramicSociety
年，卷(期)：2024, 52(7)
分类号：TQ171.73
关键词：耐辐射光纤面板 玻璃 熔制 挥发物
Keywords：radiationresistantfiberopticpanel glass melting volatilematter
机标分类号：TS225.1TF52TQ171.62
在线出版日期：2024年7月24日
基金项目：枣庄英才集聚工程专项，中建材光子科技有限公司技术开发项目，中国建材集团攻关专项耐辐射高铅玻璃熔制挥发物分析及控制[
期刊论文] 硅酸盐学报--2024, 52(7)杨胜赟 曹振博 张梅伦 张洋 王可 韩玉 吕海风 周游 贾金升用于制备耐辐射光纤面板的高铅(铅当量≥0.3)玻璃材料须具备较高的折射率、较好的X射线吸收性能、较高的可见光透过率以及良好的热稳定性和化学稳定性.但由于其高铅含量对熔制坩埚及耐火材料腐蚀性极高,且熔制过程中挥发量...参考文献和引证文献
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耐辐射高铅玻璃熔制挥发物分析及控制 Analysis and Control of Volatile Matter in Radiation Resistant High Lead Glass Melting
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