Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Porous ceramic and production process thereof
The invention discloses a porous ceramic and a production process thereof, and belongs to the technical field of ceramics, the porous ceramic comprises the following raw materials by weight: 80-90 parts of SiC micro powder, 5.8-10 parts of kaolin, and 15-20 parts of PVA coated Al2O3; the PVA-coated Al2O3 is prepared by the following steps: adding isooctane into Al2O3 powder, carrying out ultrasonic dispersion for 15-20 minutes, adding an ethyl acetate solution of PVA with the mass fraction of 5% while stirring, standing, and volatilizing the isooctane to obtain the PVA-coated Al2O3. The mullite-combined porous SiC ceramic is prepared by taking SiC as a main body, mixing and sintering the SiC, the kaolin and the PVA-coated Al2O3 and carrying out in-situ reaction in an air atmosphere at 1200-1600 DEG C, so that the sintering energy consumption and the production cost of the porous ceramic are greatly reduced, the apparent porosity is 30-34%, and the bending strength is 80.20-88.63 MPa.
本发明公开了一种多孔陶瓷及其生产工艺，属于陶瓷技术领域，包括如下重量份原料：80‑90份SiC微粉、5.8‑10份高岭土、15‑20份PVA包覆Al2O3；所述PVA包覆Al2O3包括如下步骤制备：向Al2O3粉中加入异辛烷，超声分散15‑20min，搅拌边加入质量分数为5％的PVA的乙酸乙酯溶液，静置，异辛烷挥发，得PVA包覆Al2O3。本发明通过以SiC为主体，与高岭土、PVA包覆Al2O3混合烧结，在1200‑1600℃空气氛围中原位反应制备了莫来石结合的多孔SiC陶瓷，大大降低了降低多孔陶瓷的烧结能耗、生产成本，其显气孔率为30‑34％，抗弯强度为80.20‑88.63MPa。
Porous ceramic and production process thereof
The invention discloses a porous ceramic and a production process thereof, and belongs to the technical field of ceramics, the porous ceramic comprises the following raw materials by weight: 80-90 parts of SiC micro powder, 5.8-10 parts of kaolin, and 15-20 parts of PVA coated Al2O3; the PVA-coated Al2O3 is prepared by the following steps: adding isooctane into Al2O3 powder, carrying out ultrasonic dispersion for 15-20 minutes, adding an ethyl acetate solution of PVA with the mass fraction of 5% while stirring, standing, and volatilizing the isooctane to obtain the PVA-coated Al2O3. The mullite-combined porous SiC ceramic is prepared by taking SiC as a main body, mixing and sintering the SiC, the kaolin and the PVA-coated Al2O3 and carrying out in-situ reaction in an air atmosphere at 1200-1600 DEG C, so that the sintering energy consumption and the production cost of the porous ceramic are greatly reduced, the apparent porosity is 30-34%, and the bending strength is 80.20-88.63 MPa.
本发明公开了一种多孔陶瓷及其生产工艺，属于陶瓷技术领域，包括如下重量份原料：80‑90份SiC微粉、5.8‑10份高岭土、15‑20份PVA包覆Al2O3；所述PVA包覆Al2O3包括如下步骤制备：向Al2O3粉中加入异辛烷，超声分散15‑20min，搅拌边加入质量分数为5％的PVA的乙酸乙酯溶液，静置，异辛烷挥发，得PVA包覆Al2O3。本发明通过以SiC为主体，与高岭土、PVA包覆Al2O3混合烧结，在1200‑1600℃空气氛围中原位反应制备了莫来石结合的多孔SiC陶瓷，大大降低了降低多孔陶瓷的烧结能耗、生产成本，其显气孔率为30‑34％，抗弯强度为80.20‑88.63MPa。
Porous ceramic and production process thereof
一种多孔陶瓷及其生产工艺
CAO SHULONG (Autor:in) / HUANG BINGFENG (Autor:in) / ZHANG XIA (Autor:in)
26.12.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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