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Preparation method of forsterite-based foamed ceramic spherical shell for civil air defense engineering
The invention relates to a preparation method of a forsterite-based foamed ceramic spherical shell for civil air defense engineering. According to the technical scheme, the preparation method comprises the following steps: uniformly mixing 67-85 wt% of forsterite powder, 5-10 wt% of sericite powder, 3-13 wt% of silicon micro-powder, 10-15 wt% of a binding agent, 10-30 wt% of water and 8-15 wt% ofa pore-forming agent to obtain a mud material; filling a hemispherical shell mold with an outer diameter of 6-10 cm and an inner diameter of 3-5 cm with the mud material, pressing into a hemisphericalshell billet under 5-10 Mpa, butting and combining the edge openings of the hemispherical shells into a hollow sphere under the same pressure, and demolding; and curing at 25 DEG C for 2-5 hours, then drying at 60-110 DEG C for 6-12 hours, then putting in an air atmosphere, heating to 800-1000 DEG C at a speed of 1-10 DEG C/min, keeping the temperature for 1-2 hours, and sintering and sealing toobtain the forsterite-based foamed ceramic spherical shell. According to the invention, the raw materials used in the method are cheap and easy to obtain, the sintering temperature is low, the production efficiency is high, and automatic production can be achieved; and the forsterite-based foamed ceramic spherical shell prepared through the method is uniform in wall thickness, high in strength andcontrollable in density, wall thickness and sphere size.
本发明涉及一种用于人防工程的镁橄榄石基泡沫陶瓷球壳的制备方法。其技术方案是：以67~85wt%的镁橄榄石粉、5~10wt%的绢云母粉、3~13 wt%的硅微粉为原料，外加10~15wt%的结合剂、10~30wt%的水以及8~15wt%的造孔剂，混合均匀，得到泥料；将泥料填充在外径6~10cm、内径3~5cm的半球壳型的模具中，在5~10Mpa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1~10℃/min升温至800~1000℃并保温1~2h烧结合封，得到镁橄榄石基泡沫陶瓷球壳。本发明所用原料廉价易得，烧结温度低，生产效率高，可以实现自动化生产，采用本发明制备的镁橄榄石基泡沫陶瓷球壳壁厚均匀，球壳强度高，密度、壁厚与球体尺寸可控。
Preparation method of forsterite-based foamed ceramic spherical shell for civil air defense engineering
The invention relates to a preparation method of a forsterite-based foamed ceramic spherical shell for civil air defense engineering. According to the technical scheme, the preparation method comprises the following steps: uniformly mixing 67-85 wt% of forsterite powder, 5-10 wt% of sericite powder, 3-13 wt% of silicon micro-powder, 10-15 wt% of a binding agent, 10-30 wt% of water and 8-15 wt% ofa pore-forming agent to obtain a mud material; filling a hemispherical shell mold with an outer diameter of 6-10 cm and an inner diameter of 3-5 cm with the mud material, pressing into a hemisphericalshell billet under 5-10 Mpa, butting and combining the edge openings of the hemispherical shells into a hollow sphere under the same pressure, and demolding; and curing at 25 DEG C for 2-5 hours, then drying at 60-110 DEG C for 6-12 hours, then putting in an air atmosphere, heating to 800-1000 DEG C at a speed of 1-10 DEG C/min, keeping the temperature for 1-2 hours, and sintering and sealing toobtain the forsterite-based foamed ceramic spherical shell. According to the invention, the raw materials used in the method are cheap and easy to obtain, the sintering temperature is low, the production efficiency is high, and automatic production can be achieved; and the forsterite-based foamed ceramic spherical shell prepared through the method is uniform in wall thickness, high in strength andcontrollable in density, wall thickness and sphere size.
本发明涉及一种用于人防工程的镁橄榄石基泡沫陶瓷球壳的制备方法。其技术方案是：以67~85wt%的镁橄榄石粉、5~10wt%的绢云母粉、3~13 wt%的硅微粉为原料，外加10~15wt%的结合剂、10~30wt%的水以及8~15wt%的造孔剂，混合均匀，得到泥料；将泥料填充在外径6~10cm、内径3~5cm的半球壳型的模具中，在5~10Mpa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1~10℃/min升温至800~1000℃并保温1~2h烧结合封，得到镁橄榄石基泡沫陶瓷球壳。本发明所用原料廉价易得，烧结温度低，生产效率高，可以实现自动化生产，采用本发明制备的镁橄榄石基泡沫陶瓷球壳壁厚均匀，球壳强度高，密度、壁厚与球体尺寸可控。
Preparation method of forsterite-based foamed ceramic spherical shell for civil air defense engineering
一种用于人防工程的镁橄榄石基泡沫陶瓷球壳的制备方法
WEI JIUQI (author) / DENG CHENGJI (author) / WANG SHIHE (author) / ZHANG CHUNXIAO (author) / CAO SHAOHUA (author)
2020-04-14
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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