堇青石表面13X-SiC吸附涂层微波法快速制备及评价  

Rapid Preparation and Evaluation of 13X-SiC Adsorption Coating on Cordierite Surface by Microwave Method

作　　者：潘娅婷 魏强[1,2] 张立宪 院小雪[3] 乔治[4] 魏悦凡[5] PAN Ya-ting;WEI Qiang;ZHANG Li-xian;YUAN Xiao-xue;QIAO Zhi;WEI Yue-fan(Tianjin University,Tianjin 300350,China;Hebei University of Technology,Tianjin 300401,China;Beijing Institute of Satellite Environmental Engineering,Beijing 100094,China;Shijiazhuang Tiedao University,Hebei 050043,China;Advanced Remanufacturing and Technology Center(ARTC),Singapore 637143)

机构地区：[1]天津大学,天津300350 [2]河北工业大学,天津300401 [3]北京卫星环境工程研究所,北京100094 [4]石家庄铁道大学,河北050043 [5]先进再制造与技术中心,新加坡637143

出　　处：《表面技术》2021年第11期129-136,共8页Surface Technology

基　　金：CAST-BISEE创新基金项目(2019-036);国家自然科学基金(51873146);河北省教育厅科研项目(QN2017135)。

摘　　要：目的利用微波烧结技术实现在堇青石表面快速制备整体分子吸附层。方法在13X分子筛粉体中添加具有较强微波吸收能力的碳化硅(SiC)粉末介质,通过浸渍粘结,在堇青石蜂窝陶瓷表面形成13X-SiC复合涂层,利用微波烧结快速制备整体式分子吸附层。根据微波加热机理设计微波烧结时间,通过宏观观察、称量法和热循环试验判定堵孔率、负载率、涂层与基底的结合能力。采用SEM和XRD分析复合涂层的微观形貌与组织结构,采用氮吸附法表征复合涂层的气体吸附能力。结果微波烧结2.1 min可在堇青石蜂窝陶瓷表面获得灰黑色吸附涂层,蜂窝堵孔率低于2.14%,复合涂层负载率约为18.69%,热循环脱落率约为0.47%。微波烧结未影响13X分子筛分子结构,仍存在5 nm左右的介孔。烧结后,SiC与13X分子筛堆积粘结在一起,形成了具有堆积孔隙的复合涂层,大孔和中孔占比增加。复合涂层中SiC的引入减少了13X分子筛占比,整体比表面积由517 m^(2)/g降低至131 m^(2)/g,仍具有一定吸附能力。可通过合理设计13X分子筛与SiC的比例,调节复合涂层的吸附能力。结论利用微波法烧结制备出与堇青石基底结合力强、负载率高的13X分子筛与SiC灰黑色复合涂层,缩短了堇青石整体吸附器的生产时间,降低了物理吸附载体制造成本,将有助于密闭环境中气体污染问题解决,并为航天器在轨分子污染物控制提供了新途径。To achieve rapid preparation of monolithic molecular adsorption layer on cordierite surface by microwave sintering.The 13X-SiC coating was bonded and sintered on cordierite honeycomb ceramic surface by impregnation in coating liquid and microwave sintering in microwave oven.The coating liquid concludes 13X molecular sieve powder and SiC powder medium with strong microwave absorption capacity.Microwave sintering time was designed according to the mechanism of microwave heating.The percentage of plugged hole and loading rate on cordierite honeycomb ceramic were studied by macroscopic observation and weighing method,and the binding capacity between 13X-SiC coating and cordierite was verified by thermal cycling test.The morphology and microstructure were studied by SEM and XRD.The adsorption capacity of the composite coating was characterized by nitrogen adsorption method.The experimental result showed that monolithic molecular adsorption layer could be prepared within 2.1 minutes through microwave method.The plugging rate of honeycomb cordierite was less than 2.14%.In addition,the drop rate in thermal cycling experiment and the loading rate of 13X-SiC adsorption coating were about 0.47%and 18.69%respectively.The molecular structure of 13X sieve which existed 5 nm mesoporous as before was not affected by microwave sintering.After sintering,the composite coating bonded between SiC and 13X zeolite formed the pore structure,and the proportion of the macropores and mesopores were increased.Adding SiC into the mixed powders reduced the proportion of 13X zeolite,so that the specific surface area of 13X-SiC adsorption coating decreased from 517 m^(2)/g to 131 m^(2)/g.However,it is undeniable that the 13X-SiC adsorption coating had a certain adsorption property.The adsorption capacity of the composite coating can be influenced by the ratio of 13X zeolite and SiC.The 13X-SiC coating with strong binding force and high loading rate coating on cordierite surface can be prepared by microwave sintering method.The production time o

关 键 词：堇青石整体吸附器 微波烧结 13X分子筛 SIC 密闭环境 

分 类 号：TG174.4[金属学及工艺—金属表面处理]