Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Direct writing forming preparation method of macro-micro pore silicon carbide wave-absorbing foam
The invention discloses a direct writing forming preparation method of macro-micro pore silicon carbide wave-absorbing foam, and belongs to the technical field of porous ceramic material forming, the method comprises the following steps: 1) mixing silicon carbide ceramic powder, a foam stabilizer, a sintering aid, a binder and a dispersant, and ball-milling to obtain uniformly dispersed ceramic slurry; 2) adding a surfactant into the slurry, and stirring to obtain foamed ceramic slurry; 3) carrying out direct writing molding on the foamed ceramic slurry in a grid pattern filling manner to obtain a macro-micro pore foamed ceramic green body; and 4) drying the ceramic green body, and performing vacuum sintering to obtain the macro-micro pore silicon carbide wave-absorbing foam. The macro/micro-pore silicon carbide wave-absorbing foam material is prepared by a direct-writing forming technology, the preparation method is simple and flexible in design, and the obtained macro/micro-pore silicon carbide wave-absorbing foam material has micron-sized pores formed in a foaming process and millimeter-sized pores obtained in a direct-writing forming process, and has a better prospect in the application fields of electromagnetic wave absorbing devices and the like.
本发明公开了一种宏微观孔碳化硅吸波泡沫的直写成型制备方法，属于多孔陶瓷材料成型技术领域，该方法包括以下步骤：1)将碳化硅陶瓷粉体、泡沫稳定剂、烧结助剂、粘结剂与分散剂混合球磨，得到分散均匀的陶瓷浆料；2)向浆料中加入表面活性剂，搅拌，得到泡沫陶瓷浆料；3)将泡沫陶瓷浆料以网格图案填充的方式进行直写成型，得到宏微观孔泡沫陶瓷生坯；4)将陶瓷生坯干燥后真空烧结，即得到宏微观孔碳化硅吸波泡沫。本发明以直写成型技术制备宏微观孔碳化硅吸波泡沫材料，制备方法简单，设计灵活，得到的宏微观孔碳化硅吸波泡沫同时具有发泡过程时形成的微米级孔和直写成型过程得到的毫米级孔，在电磁波吸收器件等应用领域具有较好的前景。
Direct writing forming preparation method of macro-micro pore silicon carbide wave-absorbing foam
The invention discloses a direct writing forming preparation method of macro-micro pore silicon carbide wave-absorbing foam, and belongs to the technical field of porous ceramic material forming, the method comprises the following steps: 1) mixing silicon carbide ceramic powder, a foam stabilizer, a sintering aid, a binder and a dispersant, and ball-milling to obtain uniformly dispersed ceramic slurry; 2) adding a surfactant into the slurry, and stirring to obtain foamed ceramic slurry; 3) carrying out direct writing molding on the foamed ceramic slurry in a grid pattern filling manner to obtain a macro-micro pore foamed ceramic green body; and 4) drying the ceramic green body, and performing vacuum sintering to obtain the macro-micro pore silicon carbide wave-absorbing foam. The macro/micro-pore silicon carbide wave-absorbing foam material is prepared by a direct-writing forming technology, the preparation method is simple and flexible in design, and the obtained macro/micro-pore silicon carbide wave-absorbing foam material has micron-sized pores formed in a foaming process and millimeter-sized pores obtained in a direct-writing forming process, and has a better prospect in the application fields of electromagnetic wave absorbing devices and the like.
本发明公开了一种宏微观孔碳化硅吸波泡沫的直写成型制备方法，属于多孔陶瓷材料成型技术领域，该方法包括以下步骤：1)将碳化硅陶瓷粉体、泡沫稳定剂、烧结助剂、粘结剂与分散剂混合球磨，得到分散均匀的陶瓷浆料；2)向浆料中加入表面活性剂，搅拌，得到泡沫陶瓷浆料；3)将泡沫陶瓷浆料以网格图案填充的方式进行直写成型，得到宏微观孔泡沫陶瓷生坯；4)将陶瓷生坯干燥后真空烧结，即得到宏微观孔碳化硅吸波泡沫。本发明以直写成型技术制备宏微观孔碳化硅吸波泡沫材料，制备方法简单，设计灵活，得到的宏微观孔碳化硅吸波泡沫同时具有发泡过程时形成的微米级孔和直写成型过程得到的毫米级孔，在电磁波吸收器件等应用领域具有较好的前景。
Direct writing forming preparation method of macro-micro pore silicon carbide wave-absorbing foam
一种宏微观孔碳化硅吸波泡沫的直写成型制备方法
HE RUJIE (Autor:in) / WU JIANQIN (Autor:in) / LI YING (Autor:in) / WANG WENQING (Autor:in) / ZHANG LU (Autor:in) / FANG DAINING (Autor:in)
09.12.2022
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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