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A platform for research: civil engineering, architecture and urbanism
Porous ceramic material and preparation method thereof
The invention provides a porous ceramic material and a preparation method thereof, and belongs to the field of ceramic materials. The ceramic material is prepared from the following raw materials in parts by weight: 60 to 75 parts of aggregate; 5 to 10 parts of kaolin; 8 to 15 parts of tetrahydroxy aluminum oxalate; 1 to 3 parts of a fluxing agent; 3 to 7 parts of an adhesive; 0.5 to 2 parts of adispersing agent; 1 to 3 parts of a lubricating agent; and 15 to 18 parts of water. The tetrahydroxy aluminum oxalate releases gas in the firing process of ceramic mud, so that pore forming of the ceramic material is completed; superfine aluminum oxide obtained by decomposition is used as a ceramic component to be combined into a ceramic phase in situ; due to the addition of the fluxing agent, a temperature window generated by the decomposing and gas release of the tetrahydroxy aluminum oxalate in the firing process of the ceramic mud is matched with a temperature window generated by the low-melting ceramic phase, so that the problem that the ceramic does not generate a molten phase when a common pore-forming agent decomposes and releases gas is avoided, and the problem that the common pore-forming agent decomposes and discharges polluting gas is solved. The porous ceramic obtained by the method is uniform and through in pore channels, controllable in porosity and good in stability.
本发明提供了一种多孔陶瓷材料及其制备方法，属于陶瓷材料领域。所述陶瓷材料所含原料及重量份数为：骨料60‑75份、高岭土5‑10份、四羟基草酸铝8‑15份、熔剂1‑3份、粘合剂3‑7份、分散剂0.5‑2份、润滑剂1‑3份、水15‑18份。其中四羟基草酸铝在陶瓷泥料灼烧过程中释放气体，完成陶瓷材料的造孔，其分解得到的超细氧化铝则作为陶瓷组分原位结合于陶瓷相中，由于熔剂的加入使陶瓷泥料灼烧过程中四羟基草酸铝分解释放气体和低熔陶瓷相生成的温度窗口相匹配，避免了常见造孔剂分解释放气体时陶瓷尚未产生熔融相的问题，以及常见造孔剂分解排放污染性气体问题。本发明获得的多孔陶瓷孔道均匀贯通、孔隙率可控、稳定性好。
Porous ceramic material and preparation method thereof
The invention provides a porous ceramic material and a preparation method thereof, and belongs to the field of ceramic materials. The ceramic material is prepared from the following raw materials in parts by weight: 60 to 75 parts of aggregate; 5 to 10 parts of kaolin; 8 to 15 parts of tetrahydroxy aluminum oxalate; 1 to 3 parts of a fluxing agent; 3 to 7 parts of an adhesive; 0.5 to 2 parts of adispersing agent; 1 to 3 parts of a lubricating agent; and 15 to 18 parts of water. The tetrahydroxy aluminum oxalate releases gas in the firing process of ceramic mud, so that pore forming of the ceramic material is completed; superfine aluminum oxide obtained by decomposition is used as a ceramic component to be combined into a ceramic phase in situ; due to the addition of the fluxing agent, a temperature window generated by the decomposing and gas release of the tetrahydroxy aluminum oxalate in the firing process of the ceramic mud is matched with a temperature window generated by the low-melting ceramic phase, so that the problem that the ceramic does not generate a molten phase when a common pore-forming agent decomposes and releases gas is avoided, and the problem that the common pore-forming agent decomposes and discharges polluting gas is solved. The porous ceramic obtained by the method is uniform and through in pore channels, controllable in porosity and good in stability.
本发明提供了一种多孔陶瓷材料及其制备方法，属于陶瓷材料领域。所述陶瓷材料所含原料及重量份数为：骨料60‑75份、高岭土5‑10份、四羟基草酸铝8‑15份、熔剂1‑3份、粘合剂3‑7份、分散剂0.5‑2份、润滑剂1‑3份、水15‑18份。其中四羟基草酸铝在陶瓷泥料灼烧过程中释放气体，完成陶瓷材料的造孔，其分解得到的超细氧化铝则作为陶瓷组分原位结合于陶瓷相中，由于熔剂的加入使陶瓷泥料灼烧过程中四羟基草酸铝分解释放气体和低熔陶瓷相生成的温度窗口相匹配，避免了常见造孔剂分解释放气体时陶瓷尚未产生熔融相的问题，以及常见造孔剂分解排放污染性气体问题。本发明获得的多孔陶瓷孔道均匀贯通、孔隙率可控、稳定性好。
Porous ceramic material and preparation method thereof
一种多孔陶瓷材料及其制备方法
CHEN MINGXIANG (author) / FENG JIADI (author)
2020-08-25
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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