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A platform for research: civil engineering, architecture and urbanism
Closed-pore ceramic microsphere filled gradient ceramic coating and preparation method thereof
The invention discloses a preparation method of a closed-pore ceramic microsphere filled gradient ceramic coating. The method comprises the following steps: taking an organic resin microsphere as a core, attaching a ceramic precursor on the surface of the core to obtain a solid microsphere, performing calcining at high temperature to obtain a hollow ceramic microsphere, and mixing the hollow ceramic microsphere with a ceramic aggregate to form a ceramic coating on the surface of a matrix. According to the invention, the ceramic microspheres of the mullite (3Al2O3.2SiO2) crystalline phase are used for constructing closed pore channels in the coating, and in the spraying process, the gaps among the hollow microspheres are filled with the ceramic aggregate with small particle size, so that the compactness of the coating is effectively improved, the formation of communicated pore channels is avoided, and the ceramic coating can have lower heat conductivity and provide a better heat insulation effect.
本发明公开了一种闭孔陶瓷微球填充梯度陶瓷涂层的制备方法，以有机树脂微球为核芯，在其表面附着陶瓷前驱体得到实心微球，经高温煅烧获得空心陶瓷微球，与陶瓷骨料混合，在基体表面形成陶瓷涂。本发明中以莫来石(3Al2O3·2SiO2)晶相的陶瓷微球构建涂层内部封闭孔道，且在喷涂过程中，小粒径的陶瓷骨料填充在空心微球之间的间隙内，有效提高涂层的致密性，避免连通孔道的形成，可使陶瓷涂层具有更低的热导率，提供更好的隔热效果。
Closed-pore ceramic microsphere filled gradient ceramic coating and preparation method thereof
The invention discloses a preparation method of a closed-pore ceramic microsphere filled gradient ceramic coating. The method comprises the following steps: taking an organic resin microsphere as a core, attaching a ceramic precursor on the surface of the core to obtain a solid microsphere, performing calcining at high temperature to obtain a hollow ceramic microsphere, and mixing the hollow ceramic microsphere with a ceramic aggregate to form a ceramic coating on the surface of a matrix. According to the invention, the ceramic microspheres of the mullite (3Al2O3.2SiO2) crystalline phase are used for constructing closed pore channels in the coating, and in the spraying process, the gaps among the hollow microspheres are filled with the ceramic aggregate with small particle size, so that the compactness of the coating is effectively improved, the formation of communicated pore channels is avoided, and the ceramic coating can have lower heat conductivity and provide a better heat insulation effect.
本发明公开了一种闭孔陶瓷微球填充梯度陶瓷涂层的制备方法，以有机树脂微球为核芯，在其表面附着陶瓷前驱体得到实心微球，经高温煅烧获得空心陶瓷微球，与陶瓷骨料混合，在基体表面形成陶瓷涂。本发明中以莫来石(3Al2O3·2SiO2)晶相的陶瓷微球构建涂层内部封闭孔道，且在喷涂过程中，小粒径的陶瓷骨料填充在空心微球之间的间隙内，有效提高涂层的致密性，避免连通孔道的形成，可使陶瓷涂层具有更低的热导率，提供更好的隔热效果。
Closed-pore ceramic microsphere filled gradient ceramic coating and preparation method thereof
一种闭孔陶瓷微球填充梯度陶瓷涂层及其制备方法
TAI ZHAOSHAN (author)
2022-02-25
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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