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A platform for research: civil engineering, architecture and urbanism
Preparation method of alumina-based foamed ceramic spherical shell for civil air defense engineering
The invention relates to a preparation method of an alumina-based foamed ceramic spherical shell for civil air defense engineering. The preparation method comprises the following steps: preparing a pug by taking 67-80 wt% of alumina powder, 15-18 wt% of Guangxi white mud and 5-13 wt% of kaolin as raw materials, adding 10-15 wt% of a binder, 10-40 wt% of water and 40-80 wt% of a pore-forming agentand performing uniform mixing; filling the pug into a hemispherical shell mold with the outer diameter of 8-12 cm and the inner diameter of 4-6 cm, pressing the pug into a hemispherical shell green body under the pressure of 1-4 Mpa, butting and combining the side openings of hemispherical shells into a hollow sphere under the same pressure to form a hollow sphere, and demolding the hollow sphere;firstly curing the hollow sphere for 2-5 h at 25 DEG C, then drying the hollow sphere for 6-12 h at 60-110 DEG C, then putting the hollow sphere in an air atmosphere, heating the hollow sphere to 1100-1300 DEG C at a speed of 1-5 DEG C/min, keeping the temperature for 1-2 h, and performing sintering and sealing to obtain the alumina-based foamed ceramic spherical shell. The raw materials used inthe invention are cheap and easy to obtain, the production efficiency is high, no byproduct is produced in the production process, safety and environmental protection are achieved, automatic production can be achieved, and the alumina-based foamed ceramic spherical shell prepared in the invention is high in strength, uniform in wall thickness and controllable in density, wall thickness, sphere size and normal-temperature mechanical properties.
本发明涉及一种用于人防工程的矾土基泡沫陶瓷球壳的制备方法。其技术方案是：以67~80wt%的矾土粉、15~18wt%的广西白泥、5~13wt%的高岭土为原料，外加10~15wt%的结合剂、10~40wt%的水以及40~80wt%的造孔剂，混合均匀，得到泥料。将泥料填充在外径8~12cm、内径4~6cm的半球壳型的模具中，在1~4Mpa下压制成半球壳生坯，在相同压力下将半球壳的边口对接合并成一个空心球体，脱模。先于25℃下养护2~5h，再于60~110℃烘干6~12h，然后置于空气气氛中，以1~5℃/min升温至1100~1300℃并保温1~2h烧结合封，得到矾土基泡沫陶瓷球壳。本发明所用原料廉价易得，生产效率高，生产过程中无副产物安全环保，可以实现自动化生产，采用本发明制备的矾土基泡沫陶瓷球壳强度高，壁厚均匀，密度、壁厚、球体尺寸及常温力学性能可控。
Preparation method of alumina-based foamed ceramic spherical shell for civil air defense engineering
The invention relates to a preparation method of an alumina-based foamed ceramic spherical shell for civil air defense engineering. The preparation method comprises the following steps: preparing a pug by taking 67-80 wt% of alumina powder, 15-18 wt% of Guangxi white mud and 5-13 wt% of kaolin as raw materials, adding 10-15 wt% of a binder, 10-40 wt% of water and 40-80 wt% of a pore-forming agentand performing uniform mixing; filling the pug into a hemispherical shell mold with the outer diameter of 8-12 cm and the inner diameter of 4-6 cm, pressing the pug into a hemispherical shell green body under the pressure of 1-4 Mpa, butting and combining the side openings of hemispherical shells into a hollow sphere under the same pressure to form a hollow sphere, and demolding the hollow sphere;firstly curing the hollow sphere for 2-5 h at 25 DEG C, then drying the hollow sphere for 6-12 h at 60-110 DEG C, then putting the hollow sphere in an air atmosphere, heating the hollow sphere to 1100-1300 DEG C at a speed of 1-5 DEG C/min, keeping the temperature for 1-2 h, and performing sintering and sealing to obtain the alumina-based foamed ceramic spherical shell. The raw materials used inthe invention are cheap and easy to obtain, the production efficiency is high, no byproduct is produced in the production process, safety and environmental protection are achieved, automatic production can be achieved, and the alumina-based foamed ceramic spherical shell prepared in the invention is high in strength, uniform in wall thickness and controllable in density, wall thickness, sphere size and normal-temperature mechanical properties.
本发明涉及一种用于人防工程的矾土基泡沫陶瓷球壳的制备方法。其技术方案是：以67~80wt%的矾土粉、15~18wt%的广西白泥、5~13wt%的高岭土为原料，外加10~15wt%的结合剂、10~40wt%的水以及40~80wt%的造孔剂，混合均匀，得到泥料。将泥料填充在外径8~12cm、内径4~6cm的半球壳型的模具中，在1~4Mpa下压制成半球壳生坯，在相同压力下将半球壳的边口对接合并成一个空心球体，脱模。先于25℃下养护2~5h，再于60~110℃烘干6~12h，然后置于空气气氛中，以1~5℃/min升温至1100~1300℃并保温1~2h烧结合封，得到矾土基泡沫陶瓷球壳。本发明所用原料廉价易得，生产效率高，生产过程中无副产物安全环保，可以实现自动化生产，采用本发明制备的矾土基泡沫陶瓷球壳强度高，壁厚均匀，密度、壁厚、球体尺寸及常温力学性能可控。
Preparation method of alumina-based foamed ceramic spherical shell for civil air defense engineering
一种用于人防工程的矾土基泡沫陶瓷球壳的制备方法
ZHANG CHUNXIAO (author) / DENG CHENGJI (author) / CAO SHAOHUA (author) / WANG SHIHE (author) / WEI JIUQI (author)
2020-05-12
Patent
Electronic Resource
Chinese
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