α-Al_2O_3对黄土陶瓷膜支撑体性能的影响  

Effect of α-Al_2O_3 on support of loess ceramic membrane

作　　者：同帜[1] 杨博文 行静 黎经耿 孙小娟 王磊[1] TONG Zhi;YANG Bo-wen;XING Jing;LI Jing-geng;SUN Xiao-juan;WANG Lei(College of Environmental and Chemical Engineering,Xi′an Polytechnic University, Xi′an 710048, Shaanxi Province,China;Hainan Haihuan Environmental Science and Technology Co.,Ltd., Haikou 570203,Hainan Province,China)

机构地区：[1]西安工程大学环境与化学工程学院,陕西西安710048 [2]海南海环环境科技有限公司,海南海口570203

出　　处：《化学工程》2018年第11期63-67,共5页Chemical Engineering(China)

基　　金：陕西省科技厅重点研发计划专项基金(2017GY-128)

摘　　要：以黄土为骨料,α-Al_2O_3为添加剂,采用滚压成型法和溶模芯法制备单管式黄土基无机陶瓷膜支撑体,分析α-Al_2O_3的添加量对支撑体性能的影响。通过激光粒度仪、压汞仪、XRD、微机控制电子万能试验机、SEM和自置装置对原料的粒径分布、成品的孔径大小及分布、晶型、抗折强度、表面形貌、孔隙率和纯水通量进行表征分析。结果表明:随着α-Al_2O_3添加量的增加,支撑体的抗折强度增加,平均孔径、孔隙率和纯水通量下降明显;当α-Al_2O_3添加量(质量分数)为20%,烧结温度为1 100℃时,支撑体的纯水通量为1 995.56 L/(m^2·h·MPa),平均孔径为1 027.65 nm,孔隙率为19.659 8%,抗折强度为263.768MPa,酸(碱)腐蚀质量损失为1.567%(0.178%)。Using single tube loess inorganic ceramic membrane support with loess as aggregate andα-Al 2 O 3 as additive was prepared by roll-forming and solid sintering.The influence ofα-Al 2 O 3 on support was investigated.The particle size distribution of material was characterized by laser particle size.The sample′s pore size,pore distribution,crystal form,flexural strength,surface morphology,porosity and water flux were characterized by mercury porosimeter,XRD,microcomputer control electro universal testing machine,SEM and self setting device.The research results show that withα-Al 2 O 3 increasing,the flexural strength increases,but the average pore diameter,porosity and pure water flux decreased significantly.At 1100℃,when the optimum addition(mass fraction)ofα-Al 2 O 3 was 20%,the pure water flux of 1995.56 L/(m 2·h·MPa),the average pore diameter of 1 027.65 nm,the porosity of 19.659 8%,the flexural strength of 263.768 MPa,the acid(alkali)corrosion mass loss of 1.567%(0.178%)can be obtained.

关 键 词：Α-AL2O3 黄土 支撑体 

分 类 号：X781.5[环境科学与工程—环境工程]