Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for preparing silicon nitride honeycomb ceramic
The invention discloses a method for preparing silicon nitride honeycomb ceramics, which comprises the following steps: mixing a silicon nitride material matrix with attapulgite, a metal oxide, a binder, water and lubricating oil, extruding, drying and sintering to finally obtain the silicon nitride honeycomb ceramics with controllable porosity and excellent bending strength. According to the preparation method, the attapulgite is added, so that the strength of the honeycomb green body is improved, the glue discharging time is also remarkably shortened, the bending strength of the silicon nitride honeycomb ceramic prepared by the method disclosed by the invention can reach up to 132 MPa, the yield is improved, and the silicon nitride honeycomb ceramic is particularly suitable for a base material of a filter for gas separation in a high-temperature atmosphere and a corrosive atmosphere; wide application prospects are realized in the field of automobile tail gas treatment.
本发明公开了一种制备氮化硅蜂窝陶瓷的方法，该方法以氮化硅的材料基体，将其与凹凸棒土、金属氧化物、粘结剂、水和润滑油共混，经挤压、干燥、烧结，最终得到气孔率可控、抗弯强度优良的氮化硅蜂窝陶瓷。本发明中，凹凸棒土的加入不仅提高了蜂窝生坯的强度，也显著缩短了排胶时间，根据本发明方法制得的氮化硅蜂窝陶瓷的抗弯强度可高达132MPa，提高了良品率，特别适用于高温气氛及腐蚀性气氛下的气体分离用过滤器的基体材料，在汽车尾气处理领域具有广阔的应用前景。
Method for preparing silicon nitride honeycomb ceramic
The invention discloses a method for preparing silicon nitride honeycomb ceramics, which comprises the following steps: mixing a silicon nitride material matrix with attapulgite, a metal oxide, a binder, water and lubricating oil, extruding, drying and sintering to finally obtain the silicon nitride honeycomb ceramics with controllable porosity and excellent bending strength. According to the preparation method, the attapulgite is added, so that the strength of the honeycomb green body is improved, the glue discharging time is also remarkably shortened, the bending strength of the silicon nitride honeycomb ceramic prepared by the method disclosed by the invention can reach up to 132 MPa, the yield is improved, and the silicon nitride honeycomb ceramic is particularly suitable for a base material of a filter for gas separation in a high-temperature atmosphere and a corrosive atmosphere; wide application prospects are realized in the field of automobile tail gas treatment.
本发明公开了一种制备氮化硅蜂窝陶瓷的方法，该方法以氮化硅的材料基体，将其与凹凸棒土、金属氧化物、粘结剂、水和润滑油共混，经挤压、干燥、烧结，最终得到气孔率可控、抗弯强度优良的氮化硅蜂窝陶瓷。本发明中，凹凸棒土的加入不仅提高了蜂窝生坯的强度，也显著缩短了排胶时间，根据本发明方法制得的氮化硅蜂窝陶瓷的抗弯强度可高达132MPa，提高了良品率，特别适用于高温气氛及腐蚀性气氛下的气体分离用过滤器的基体材料，在汽车尾气处理领域具有广阔的应用前景。
Method for preparing silicon nitride honeycomb ceramic
一种制备氮化硅蜂窝陶瓷的方法
JIANG GUANGPENG (Autor:in) / TAO DONGLIANG (Autor:in) / WANG YONGZHONG (Autor:in) / LUO CHUNHUA (Autor:in) / YIN RONGCAN (Autor:in)
13.12.2022
Patent
Elektronische Ressource
Chinesisch
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