利用明胶微球低碳制备多形态Al_(2)O_(3)多孔陶瓷  

Low-Carbon Preparation of Polymorphic Al_(2)O_(3) Porous Ceramics Using Gelatin Microspheres

作　　者：郭新爽 罗焱航 朱建良 王献忠 GUO Xin-shuang;LUO Yan-hang;ZHU Jian-liang;WANG Xian-zhong(School of Materials and Chemical Engineering,Pingxiang University,Pingxiang,Jiangxi 337000;Pingxiang Dongtao Ceramics Co.,Ltd.,Pingxiang,Jiangxi 337000,China)

机构地区：[1]萍乡学院材料与化学工程学院 [2]萍乡市东陶陶瓷有限责任公司,江西萍乡337000

出　　处：《萍乡学院学报》2023年第4期93-96,共4页Journal of Pingxiang University

基　　金：国家自然科学基金项目“析晶诱导普通干燥下陶瓷气凝胶的高效构筑与调控机理研究”(No.52262009)。

摘　　要：利用明胶作为原料,采用乳化法来制备明胶微球,再将该微球做模板用于低碳制备多形态的Al_(2)O_(3)多孔陶瓷。实验探究明胶溶液浓度、搅拌速度、水油比、乳化剂的种类和添加量对明胶微球结构的影响。结果表明:在50℃条件下,明胶溶液浓度为176.5 g/L,搅拌速度150 r/min,水油比1:5,葡萄糖添加量为0.065 g/mL时,制得的明胶微球平均粒径约为400μm。将其表面包覆拟薄水铝石粉体后,烧结得到Al_(2)O_(3)陶瓷空心球。此外,利用包覆碳化硅的明胶微球加入Al_(2)O_(3)基体中,制得了孔结构完整的Al2O3多孔陶瓷。Gelatin microspheres were prepared by emulsification method using gelatin as raw material,and polymorphic Al2O3 porous ceramics were prepared based on the prepared gelatin microspheres.The effects of gelatin solution concentration,stirring speed,water-oil ratio,type and addition amount of emulsifier on the structure of gelatin microspheres were investigated.Results showed that the average particle size of the gelatin microspheres was about 400μm at 50℃with a gelatin solution concentration of 176.5 g/L,a stirring speed of 150 r/min,a water-to-oil ratio of 1/5,and an additive amount of glucose of 0.065 g/mL.The Al_(2)O_(3) ceramic hollow spheres were obtained by sintering gelatin microspheres with pseudo-boehmite powders on their surfaces.In addition,Al_(2)O_(3) porous ceramics with complete pore structure were fabricated by using the gelatin microspheres coated with silicon carbide added into the Al2Al_(2)O_(3) matrix.

关 键 词：多孔陶瓷 明胶微球 乳化法 空心球 

分 类 号：TQ174.1[化学工程—陶瓷工业]