Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Low-temperature sintered negative ion porous ceramic and preparation method thereof
The invention discloses low-temperature sintered negative ion porous ceramic and a preparation method thereof. The preparation method comprises the following steps: mixing CeO2 with tourmaline powder, carrying out heat treatment, carrying out ball milling to obtain superfine negative ion composite powder, and calcining the superfine negative ion composite powder, kaolin, dolomite, sepiolite, nano feldspar and quartz as raw materials at 850-950 DEG C to obtain the negative ion porous ceramic. The tourmaline powder in the ceramic raw materials can significantly increase the negative ion release amount after being subjected to CeO2 doping treatment, and the dolomite is decomposed into CaO.MgO at high temperature and generates a large amount of gas CO2, so that the prepared ceramic product is of a porous structure, the specific surface area of the ceramic product is increased, substances such as moisture in air are more easily ionized to generate negative ions, and the negative ion release amount is increased. Moreover, the proportion of CaO and MgO oxidized by alkaline earth metal in the pug is increased, the solid-phase reaction activity of SiO2 and Al2O3 at low temperature is enhanced, and a low-temperature eutectic melting effect is achieved, so that the firing temperature is reduced, and the defect that the negative ion release amount is reduced due to crystal phase transformation of negative ion powder at relatively high temperature is overcome.
本发明公开了一种低温烧结负离子多孔陶瓷及其制备方法。首先将CeO2与电气石粉混合，热处理后经球磨得到超细负离子复合粉体，然后以超细负离子复合粉体、高岭土、白云石、海泡石、纳长石、石英为原料，在850‑950℃下煅烧得到负离子多孔陶瓷。本发明陶瓷原料中的电气石粉经CeO2掺杂处理后能够显著提升负离子释放量，白云石在高温下分解成CaO·MgO，并产生大量气体CO2，使制得的陶瓷制品成多孔结构，提升其比表面积，更容易电离空气中的水分等物质来产生负离子，并且泥料中碱土金属氧化CaO、MgO比例增加，低温时SiO2和Al2O3固相反应活性增强，达到低温共熔效果，从而降低烧成温度，克服了负离子粉在较高的温度下发生晶相转化导致负离子释放量降低的缺点。
Low-temperature sintered negative ion porous ceramic and preparation method thereof
The invention discloses low-temperature sintered negative ion porous ceramic and a preparation method thereof. The preparation method comprises the following steps: mixing CeO2 with tourmaline powder, carrying out heat treatment, carrying out ball milling to obtain superfine negative ion composite powder, and calcining the superfine negative ion composite powder, kaolin, dolomite, sepiolite, nano feldspar and quartz as raw materials at 850-950 DEG C to obtain the negative ion porous ceramic. The tourmaline powder in the ceramic raw materials can significantly increase the negative ion release amount after being subjected to CeO2 doping treatment, and the dolomite is decomposed into CaO.MgO at high temperature and generates a large amount of gas CO2, so that the prepared ceramic product is of a porous structure, the specific surface area of the ceramic product is increased, substances such as moisture in air are more easily ionized to generate negative ions, and the negative ion release amount is increased. Moreover, the proportion of CaO and MgO oxidized by alkaline earth metal in the pug is increased, the solid-phase reaction activity of SiO2 and Al2O3 at low temperature is enhanced, and a low-temperature eutectic melting effect is achieved, so that the firing temperature is reduced, and the defect that the negative ion release amount is reduced due to crystal phase transformation of negative ion powder at relatively high temperature is overcome.
本发明公开了一种低温烧结负离子多孔陶瓷及其制备方法。首先将CeO2与电气石粉混合，热处理后经球磨得到超细负离子复合粉体，然后以超细负离子复合粉体、高岭土、白云石、海泡石、纳长石、石英为原料，在850‑950℃下煅烧得到负离子多孔陶瓷。本发明陶瓷原料中的电气石粉经CeO2掺杂处理后能够显著提升负离子释放量，白云石在高温下分解成CaO·MgO，并产生大量气体CO2，使制得的陶瓷制品成多孔结构，提升其比表面积，更容易电离空气中的水分等物质来产生负离子，并且泥料中碱土金属氧化CaO、MgO比例增加，低温时SiO2和Al2O3固相反应活性增强，达到低温共熔效果，从而降低烧成温度，克服了负离子粉在较高的温度下发生晶相转化导致负离子释放量降低的缺点。
Low-temperature sintered negative ion porous ceramic and preparation method thereof
一种低温烧结负离子多孔陶瓷及其制备方法
LIU JINLING (Autor:in) / BAI XIN (Autor:in) / CHEN DENGLONG (Autor:in) / LEE EUN-GIL (Autor:in) / LIN HAIZHEN (Autor:in)
31.01.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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