α-Al_2O_3微滤膜耐酸碱腐蚀性研究  

THE ACID/ALKALI RESISTANCE RESEARCH OF α-Al_2O_3 MICROFILTR MEMBRANES

作　　者：汪永清[1] 汪锦明[1] 施群[1] 陈紫谦[1] 饶卉[1] 

机构地区：[1]景德镇陶瓷学院,景德镇333001

出　　处：《陶瓷学报》2010年第2期213-217,共5页Journal of Ceramics

基　　金：科技部国际科技合作项目(编号:2009DFB50490);江西省教育厅项目(编号:GJJ08510)

摘　　要：以20μmα-Al2O3粉为主要原料,钛白粉、轻烧MgO粉和钛溶胶为微滤膜添加剂,采用固相烧结反应法制备了强度和耐酸碱腐蚀性较好的α-Al2O3微滤膜。实验探讨了添加剂的种类、烧结制度对微滤膜耐酸碱腐蚀性的影响。结果表明,采用固相烧结反应法,α-Al2O3粉中加入5%钛溶胶,经1450℃煅烧,可制备孔隙率为26%,强度为50MPa耐酸碱腐蚀性较好的α-Al2O3-钛溶胶体系微滤膜;α-Al2O3粉中加入4%轻烧MgO粉和1%ZnO2,经1500℃煅烧,可制备孔隙率为25%,强度为80MPa耐酸碱腐蚀性较好的Al2O3-MgO-ZnO2体系微滤膜。The α-Al2O3 microfiltration membranes with good bending strength and acid-resistance were prepared by a solidphase sintering method using 20μm α-Al2O3 powder as main raw material and titanium,light-burned magnesia powder and titanium sol as microfiltration membrane additives.The effects of the additives on the scheme of sintering and acid/base resistance were discussed.The results show that the microfiltration membrane of Al2O3-Ti sol system has the porosity of 26%,the bend strength of 50Mpa and good acid/alkali resistance,when cacined at 1450℃ with 5wt% titanium sol as a sintering aid.The microfiltration membrane of Al2O3-MgO-ZnO2 system has the porosity of 25%,the bend strength of 80Mpa and good acid/alkali resistance,when cacined at 1500℃ with 4wt% MgO and 1 wt% ZnO2 as sintering aids.

关 键 词：氧化铝 微滤膜 耐酸碱性 钛溶胶 MgO粉 

分 类 号：TQ174.75[化学工程—陶瓷工业]