一种新型的陶瓷前堇青石增强铯活化地聚合物  

A Novel Preceramic Cordierite Reinforced Cesium-activated Geopolymer

作　　者：范剑锋[1] 潘晨韵 Alicia Garofalo FAN Jian-feng;PAN Chen-yun;Alicia Garofalo(School of Civil Engineering and Architecture,Wuhan University of Technology,Wuhan 430070,China;College of Material Science and Engineering,Chongqing University,Chongqing 400045,China;School of Material Science and Engineering,Wuhan University of Technology,Wuhan 430070,China)

机构地区：[1]武汉理工大学土木工程与建筑学院,武汉430070 [2]重庆大学材料科学与工程学院,重庆400045 [3]武汉理工大学材料科学与工程学院,武汉430070

出　　处：《武汉理工大学学报》2023年第10期16-25,共10页Journal of Wuhan University of Technology

基　　金：湖北省重点研发计划项目(2020BAB065)。

摘　　要：以粉煤灰和偏高岭土作为硅酸铝原料制备铯地聚合物,用堇青石增强地聚合物基体,发展一种铯活化地聚合物复合材料(CsGPc),具备高温转化陶瓷能力。对CsGP样品陶瓷化过程微结构、物相组成、力学性能表征分析,结果表明:以偏高岭土为基础的地聚合物配方制备出的铯榴石陶瓷具有最佳的热阻性能;堇青石包裹体的热膨胀系数(CTE)从4.50 K-1到1.89×10^(-6)K^(-1)不等,当加入35%的堇青石时,抗压强度提高194%,材料热性能优良,堇青石的最佳添加量为20%。Cesium geopolymers were prepared from fly ash and metakaolin as aluminum silicate raw materials,and the geopolymer matrix was activated with cordierite to develop a cesium-activated geopolymer composite(CsGPc),which has high-temperature conversion ceramic capability.Characterization and analysis of the microstructure,physical phase composition,and mechanical properties of the ceramization process of the CsGP samples showed that the cesium-activated ceramics prepared from the metakaolin-based geopolymer formulation had the best thermal resistance;the coefficients of thermal expansion(CTE)of cordierite inclusions ranged from 4.50 K^(-1)to 1.89×10^(-6)K^(-1),and the compressive strength was increased by 194%when 35%cordierite was added.The material has excellent thermal properties,and the optimum amount of cordierite added is 20%.

关 键 词：铯榴石基陶瓷 铯活化地聚合物复合材料 堇青石 矽线石 

分 类 号：TQ175.71[化学工程—硅酸盐工业]