摘要
在浆料中添加造孔剂和海藻酸钠模板剂,通过自动滴球固化成型得到湿球,再经干燥、两次焙烧和PFAS化学修饰后,最终得到超疏水ZrO_(2)-SiO_(2)多孔陶瓷微球。同时,使用XRD、SEM、EDS、N_(2)-低温物理吸附仪、压汞、接触角仪以及万能试验机对经1100℃、1200℃和1400℃烧结后的陶瓷微球的结构、形貌、比表面积、表面静态接触角和耐压性能进行表征。结果表明,1200℃烧结温度下的多孔陶瓷微球中微孔—介孔和中孔—大孔比表面积分别高达34.55 m^(2)·g^(−1)和30.98 m^(2)·g^(−1),对应的孔体积分别为0.248 mL·g^(−1)和0.688 mL·g^(−1),并具备高达9.2 N耐压的受力强度。该多孔陶瓷微球还展示出优异的疏水性能和高稳定性,其球外表面接触角约为161.7°,内断面的接触角约为151.0°。
Wet ceramic spheres were obtained by using auto-drop device with a slurry consisting of pore-forming agent and sodium alginate template,leading to super-hydrophobic ZnO_(2)-SiO_(2)porous ceramic microspheres,after drying,roasting and PFAS chemical modification.Structure,morphology,specific surface area,static contact angle and pressure resistance of the porous ceramic microspheres obtained at 1100℃,1200℃and 1400℃were characterized by using XRD,SEM,EDS,mercury injection,contact angle meter and universal tester.The ceramic microspheres sintered at 1200℃possessed a high micropore-mesoporous specific surface areas of 34.55 m^(2)·g^(−1),a controlled pore volume of 0.248 mL·g^(−1),a mesopore-macropore surface area of 30.98 m^(2)·g^(−1)and a pore volume of 0.688 mL·g^(−1).In addition,the porous ceramic microspheres were strongly hydrophobic with water contact angles of 161.5°(outer surface)and 150.4°(inner surface).
作者
贺有鹏
晁自胜
王鸣玉
赖健昕
韩胜华
HE Youpeng;CHAO Zisheng;WANG Mingyu;LAI Jianxin;HAN Shenghua(College of Materials Science and Engineering,Changsha University of Science&Technology,Changsha 410114,Hunan,China)
出处
《陶瓷学报》
CAS
北大核心
2022年第4期620-628,共9页
Journal of Ceramics
基金
湖南省研究生科研创新项目(CX2018B579)。
