Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention discloses a porous ceramic heating body and a preparation method thereof. The preparation method comprises the following steps: ultrasonically dispersing a mixture of diatomite or argil, tetraethyl orthosilicate and deionized water uniformly to obtain a suspension A; mixing the suspension A, a cationic block copolymer and conductive ceramic powder, and dropwise adding a mixture of ammonia water and ethanol to obtain slurry B; carrying out spray drying on the slurry B to obtain powder particles C; pressing the powder particles C to form a blocky matrix, and drying the blocky matrix to form a green body; placing the green body in isolation powder for sintering to obtain a semi-finished product; and conducting nickel plating on the surfaces of the two ends of the semi-finished product and leading out electrodes from the nickel-plated portions so as to obtain the porous ceramic heating body. The porous ceramic heating body is more uniform in pore distribution, so the heating stability and uniformity of the porous ceramic heating body are better; and meanwhile, the high-temperature-resistant argil containing sodium bentonite is adopted, so the adsorption capacity of the porous ceramic heating body is further improved.
本发明公开了一种多孔陶瓷加热体及其制备方法。制备方法包括下述步骤：将硅藻土或陶土、原硅酸四乙酯和去离子水的混合物，超声分散均匀，得到悬浮液A；将悬浮液A、阳离子嵌段共聚物、导电陶瓷粉混合后，再滴加氨水和乙醇的混合物，得到浆料B；对浆料B进行喷雾干燥得到粉末颗粒C；将粉末颗粒C进行压制以形成块状基体，干燥形成坯体；将坯体置于隔离粉中进行烧结，得到半成品；将半成品的两端表面镀镍，在镀镍后的部位引出电极，即制得多孔陶瓷加热体。本发明的多孔陶瓷加热体孔隙分布更均匀，使得加热稳定性和均匀性更好，同时采用含有钠基膨润土的耐高温陶土，吸附能力也有进一步提高。
The invention discloses a porous ceramic heating body and a preparation method thereof. The preparation method comprises the following steps: ultrasonically dispersing a mixture of diatomite or argil, tetraethyl orthosilicate and deionized water uniformly to obtain a suspension A; mixing the suspension A, a cationic block copolymer and conductive ceramic powder, and dropwise adding a mixture of ammonia water and ethanol to obtain slurry B; carrying out spray drying on the slurry B to obtain powder particles C; pressing the powder particles C to form a blocky matrix, and drying the blocky matrix to form a green body; placing the green body in isolation powder for sintering to obtain a semi-finished product; and conducting nickel plating on the surfaces of the two ends of the semi-finished product and leading out electrodes from the nickel-plated portions so as to obtain the porous ceramic heating body. The porous ceramic heating body is more uniform in pore distribution, so the heating stability and uniformity of the porous ceramic heating body are better; and meanwhile, the high-temperature-resistant argil containing sodium bentonite is adopted, so the adsorption capacity of the porous ceramic heating body is further improved.
本发明公开了一种多孔陶瓷加热体及其制备方法。制备方法包括下述步骤：将硅藻土或陶土、原硅酸四乙酯和去离子水的混合物，超声分散均匀，得到悬浮液A；将悬浮液A、阳离子嵌段共聚物、导电陶瓷粉混合后，再滴加氨水和乙醇的混合物，得到浆料B；对浆料B进行喷雾干燥得到粉末颗粒C；将粉末颗粒C进行压制以形成块状基体，干燥形成坯体；将坯体置于隔离粉中进行烧结，得到半成品；将半成品的两端表面镀镍，在镀镍后的部位引出电极，即制得多孔陶瓷加热体。本发明的多孔陶瓷加热体孔隙分布更均匀，使得加热稳定性和均匀性更好，同时采用含有钠基膨润土的耐高温陶土，吸附能力也有进一步提高。
Porous ceramic heating body and preparation method thereof
一种多孔陶瓷加热体及其制备方法
QIN CHEN (Autor:in)
06.07.2021
Patent
Elektronische Ressource
Chinesisch
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