Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Porous ceramic and preparation method thereof
The invention belongs to the technical field of preparation of porous ceramics, particularly relates to porous ceramics and a preparation method thereof, and aims to solve the problems that the stability of the porous ceramics prepared by the existing method is easily influenced, the heat conductivity coefficient is lower and the pore diameter is larger. The porous ceramic is prepared by the following steps: drying a Pickering emulsion to form a ceramic green body, and sintering the ceramic green body, wherein the Pickering emulsion is formed by uniformly stirring 20-80 parts by mass of inorganic oxide particles, 20-80 parts by mass of carbohydrate, 20-80 parts by mass of a dispersing agent and 20-80 parts by mass of deionized water, dropwise adding 20-80 parts by mass of a short-chain surfactant in a stirring state to prepare a dispersion liquid, adding an oil phase and foaming. 1 to 40 parts of carbohydrate; 0.5-3 parts of a dispersant; 100 parts of deionized water; 0.5 to 3 parts of a short-chain surfactant; and 0.5-6 parts of an oil phase. The thermal conductivity of the prepared porous ceramic is improved, the porosity regulation and control range of the ceramic is larger, the particle size selection range is wider, and the stability of emulsion in the preparation process is good.
本发明属于多孔陶瓷的制备技术领域，具体涉及一种多孔陶瓷及其制备方法，旨在解决现有方法制备的多孔陶瓷稳定性易受影响、导热系数较低且孔径较大的问题。一种多孔陶瓷，由Pickering乳液干燥后形成陶瓷胚体，对陶瓷胚体进行烧结后形成；其中，Pickering乳液由无机氧化物颗粒、碳水化合物、分散剂、去离子水搅拌均匀，并在搅拌状态下滴加短链表面活性剂制成分散液，加入油相并经发泡后形成，上述组分中的各原料的质量份为：无机氧化物颗粒20～80份；碳水化合物1～40份；分散剂0.5～3份；去离子水100份；短链表面活性剂0.5～3份；油相为0.5～6份。本发明中制备的多孔陶瓷的导热性提升，陶瓷孔隙率调控范围更大，对颗粒尺寸选择范围更广，制备过程中乳液的稳定性好。
Porous ceramic and preparation method thereof
The invention belongs to the technical field of preparation of porous ceramics, particularly relates to porous ceramics and a preparation method thereof, and aims to solve the problems that the stability of the porous ceramics prepared by the existing method is easily influenced, the heat conductivity coefficient is lower and the pore diameter is larger. The porous ceramic is prepared by the following steps: drying a Pickering emulsion to form a ceramic green body, and sintering the ceramic green body, wherein the Pickering emulsion is formed by uniformly stirring 20-80 parts by mass of inorganic oxide particles, 20-80 parts by mass of carbohydrate, 20-80 parts by mass of a dispersing agent and 20-80 parts by mass of deionized water, dropwise adding 20-80 parts by mass of a short-chain surfactant in a stirring state to prepare a dispersion liquid, adding an oil phase and foaming. 1 to 40 parts of carbohydrate; 0.5-3 parts of a dispersant; 100 parts of deionized water; 0.5 to 3 parts of a short-chain surfactant; and 0.5-6 parts of an oil phase. The thermal conductivity of the prepared porous ceramic is improved, the porosity regulation and control range of the ceramic is larger, the particle size selection range is wider, and the stability of emulsion in the preparation process is good.
本发明属于多孔陶瓷的制备技术领域，具体涉及一种多孔陶瓷及其制备方法，旨在解决现有方法制备的多孔陶瓷稳定性易受影响、导热系数较低且孔径较大的问题。一种多孔陶瓷，由Pickering乳液干燥后形成陶瓷胚体，对陶瓷胚体进行烧结后形成；其中，Pickering乳液由无机氧化物颗粒、碳水化合物、分散剂、去离子水搅拌均匀，并在搅拌状态下滴加短链表面活性剂制成分散液，加入油相并经发泡后形成，上述组分中的各原料的质量份为：无机氧化物颗粒20～80份；碳水化合物1～40份；分散剂0.5～3份；去离子水100份；短链表面活性剂0.5～3份；油相为0.5～6份。本发明中制备的多孔陶瓷的导热性提升，陶瓷孔隙率调控范围更大，对颗粒尺寸选择范围更广，制备过程中乳液的稳定性好。
Porous ceramic and preparation method thereof
一种多孔陶瓷及其制备方法
LI YALI (Autor:in) / LIU WEIWEI (Autor:in) / ZOU TAO (Autor:in) / ZHAO JIN (Autor:in) / ZHANG TAO (Autor:in) / DENG PINGYE (Autor:in)
19.04.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME