Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Foamed ceramic with high fire endurance and capable of being rapidly cooled and preparation method thereof
The invention discloses foamed ceramic with high fire endurance and capable of being quickly cooled and a preparation method thereof. The foamed ceramic comprises the following synthetic raw materials: an aluminum source, magnesite, a crystal accelerator, zircon powder and a foaming agent; the foamed ceramic contains mullite and cordierite which are generated in situ. According to the invention, the aluminum source and magnesite exist; magnesium aluminate spinel is firstly generated under the action of the crystal accelerator and is converted into cordierite and mullite under the next temperature gradient, and due to the two continuous conversion processes, in-situ conversion of the magnesium aluminate spinel is realized, so that a relatively stable skeleton structure can be provided, andthe thermal stability of the foamed ceramic can be further improved. As a large amount of crystals rather than vitreous bodies are generated, the strength and the thermal stability of the foamed ceramic can be improved, the explosion-proof performance of the foamed ceramic can be enhanced, and rapid annealing of the foamed ceramic can be realized.
一种具有高耐火极限可快速降温发泡陶瓷及其制备方法，所述发泡陶瓷的合成原料包括如下物质：铝源，菱镁矿，晶体促进剂，锆英粉，发泡剂，所述发泡陶瓷中含有原位生成的莫来石和堇青石。本申请通过铝源以及菱镁矿的存在，在晶体促进剂的作用下，先生成镁铝尖晶石，并在下一个温度梯度下向堇青石以及莫来石转变，由于两个的连续转化过程，因此属于镁铝尖晶石的原位转化，从而可以提供一个较为稳定的骨架结构，可进一步提高发泡陶瓷的热稳定性。由于其生成的大量的为晶体而非玻璃体，因此能够提高发泡陶瓷的强度和热稳定性，从而可以增强发泡陶瓷的防爆性能，又能实现发泡陶瓷的快速退火。
Foamed ceramic with high fire endurance and capable of being rapidly cooled and preparation method thereof
The invention discloses foamed ceramic with high fire endurance and capable of being quickly cooled and a preparation method thereof. The foamed ceramic comprises the following synthetic raw materials: an aluminum source, magnesite, a crystal accelerator, zircon powder and a foaming agent; the foamed ceramic contains mullite and cordierite which are generated in situ. According to the invention, the aluminum source and magnesite exist; magnesium aluminate spinel is firstly generated under the action of the crystal accelerator and is converted into cordierite and mullite under the next temperature gradient, and due to the two continuous conversion processes, in-situ conversion of the magnesium aluminate spinel is realized, so that a relatively stable skeleton structure can be provided, andthe thermal stability of the foamed ceramic can be further improved. As a large amount of crystals rather than vitreous bodies are generated, the strength and the thermal stability of the foamed ceramic can be improved, the explosion-proof performance of the foamed ceramic can be enhanced, and rapid annealing of the foamed ceramic can be realized.
一种具有高耐火极限可快速降温发泡陶瓷及其制备方法，所述发泡陶瓷的合成原料包括如下物质：铝源，菱镁矿，晶体促进剂，锆英粉，发泡剂，所述发泡陶瓷中含有原位生成的莫来石和堇青石。本申请通过铝源以及菱镁矿的存在，在晶体促进剂的作用下，先生成镁铝尖晶石，并在下一个温度梯度下向堇青石以及莫来石转变，由于两个的连续转化过程，因此属于镁铝尖晶石的原位转化，从而可以提供一个较为稳定的骨架结构，可进一步提高发泡陶瓷的热稳定性。由于其生成的大量的为晶体而非玻璃体，因此能够提高发泡陶瓷的强度和热稳定性，从而可以增强发泡陶瓷的防爆性能，又能实现发泡陶瓷的快速退火。
Foamed ceramic with high fire endurance and capable of being rapidly cooled and preparation method thereof
一种具有高耐火极限可快速降温发泡陶瓷及其制备方法
FAN SHIMENG (Autor:in) / WANG KAI (Autor:in) / ZHENG SHUQING (Autor:in) / GUAN PENGFEI (Autor:in) / WANG KUN (Autor:in) / GE BIN (Autor:in)
15.05.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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