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Magnesium borate whisker porous ceramic material based on molten salt method and preparation method thereof
The invention relates to a magnesium borate whisker porous ceramic material based on a molten salt method and a preparation method thereof. According to the technical scheme, the preparation method comprises the steps: mixing basic magnesium carbonate and boric acid according to the molar ratio of 1:(1.0-3.0), keeping the temperature at 500-600 DEG C for 1-2 hours, and crushing to obtain magnesium borate powder; mixing sodium chloride, potassium sulfate, potassium chloride and sodium bicarbonate to obtain a mixture; mixing magnesium borate powder and the mixture, ball-milling and drying, and thus obtaining magnesium borate whisker porous ceramic powder; and carrying out mechanical pressing on the magnesium borate whisker porous ceramic powder, drying, carrying out heat preservation at 700-900 DEG C for 3-5 hours, naturally cooling, washing with hot distilled water, filtering until the filtrate reacts with AgNO3 or BaCl2 and no white precipitate is generated, and drying to prepare the magnesium borate whisker porous ceramic material based on the molten salt method. The method is low in reaction temperature, simple in technological process, low in operation difficulty and low in cost; and the prepared product is small in linear change rate, high in compressive strength and relatively high in porosity.
本发明涉及一种基于熔盐法的硼酸镁晶须多孔陶瓷材料及其制备方法。其技术方案是：按碱式碳酸镁∶硼酸的摩尔比为1∶1.0～3.0，将碱式碳酸镁和硼酸混合，在500～600℃保温1～2小时，破碎，得到硼酸镁粉体；将氯化钠、硫酸钾、氯化钾和碳酸氢钠混合，得混合料；将硼酸镁粉体和混合料混合，球磨，烘干，制得硼酸镁晶须多孔陶瓷粉体；然后将硼酸镁晶须多孔陶瓷粉体机压成型，干燥，在700～900℃保温3～5小时，自然冷却，用热蒸馏水洗涤，过滤，直至滤液与AgNO3或BaCl2反应无白色沉淀产生，干燥，制得基于熔盐法的硼酸镁晶须多孔陶瓷材料。本发明反应温度低、工艺流程简单、操作难度小和成本低；所制制品线变化率小、抗压强度大和孔隙率较高。
Magnesium borate whisker porous ceramic material based on molten salt method and preparation method thereof
The invention relates to a magnesium borate whisker porous ceramic material based on a molten salt method and a preparation method thereof. According to the technical scheme, the preparation method comprises the steps: mixing basic magnesium carbonate and boric acid according to the molar ratio of 1:(1.0-3.0), keeping the temperature at 500-600 DEG C for 1-2 hours, and crushing to obtain magnesium borate powder; mixing sodium chloride, potassium sulfate, potassium chloride and sodium bicarbonate to obtain a mixture; mixing magnesium borate powder and the mixture, ball-milling and drying, and thus obtaining magnesium borate whisker porous ceramic powder; and carrying out mechanical pressing on the magnesium borate whisker porous ceramic powder, drying, carrying out heat preservation at 700-900 DEG C for 3-5 hours, naturally cooling, washing with hot distilled water, filtering until the filtrate reacts with AgNO3 or BaCl2 and no white precipitate is generated, and drying to prepare the magnesium borate whisker porous ceramic material based on the molten salt method. The method is low in reaction temperature, simple in technological process, low in operation difficulty and low in cost; and the prepared product is small in linear change rate, high in compressive strength and relatively high in porosity.
本发明涉及一种基于熔盐法的硼酸镁晶须多孔陶瓷材料及其制备方法。其技术方案是：按碱式碳酸镁∶硼酸的摩尔比为1∶1.0～3.0，将碱式碳酸镁和硼酸混合，在500～600℃保温1～2小时，破碎，得到硼酸镁粉体；将氯化钠、硫酸钾、氯化钾和碳酸氢钠混合，得混合料；将硼酸镁粉体和混合料混合，球磨，烘干，制得硼酸镁晶须多孔陶瓷粉体；然后将硼酸镁晶须多孔陶瓷粉体机压成型，干燥，在700～900℃保温3～5小时，自然冷却，用热蒸馏水洗涤，过滤，直至滤液与AgNO3或BaCl2反应无白色沉淀产生，干燥，制得基于熔盐法的硼酸镁晶须多孔陶瓷材料。本发明反应温度低、工艺流程简单、操作难度小和成本低；所制制品线变化率小、抗压强度大和孔隙率较高。
Magnesium borate whisker porous ceramic material based on molten salt method and preparation method thereof
一种基于熔盐法的硼酸镁晶须多孔陶瓷材料及其制备方法
LI YUANBING (author) / LIU JINGFEI (author) / LI SHUJING (author) / XIANG RUOFEI (author) / LUO HAN (author)
2021-06-04
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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