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A platform for research: civil engineering, architecture and urbanism
Ceramic microspheres and preparation method thereof
The invention provides ceramic microspheres and a preparation method thereof. The preparation method comprises the following steps of: S1, adding ceramic powder into continuous phase liquid and stirring to form a dispersion; and S2, adding a binder into the dispersion, stirring to form microspheres, and sintering the microspheres. The hydrophilicity and hydrophobicity of the surface of the continuous phase liquid are opposite to those of the surface of the ceramic powder, and the hydrophilicity and hydrophobicity of the binder are opposite to those of the continuous phase liquid. According tothe preparation method, particles are bonded by capillary force formed by tension at a liquid-liquid two-phase interface of a binder and the continuous phase liquid, and are compacted tightly under the action of mechanical stirring force. The liquid phase formed by the ceramic powder particles and the binder is more uniformly dispersed in the liquid phase than in the air, and the surface tension of the binder is smaller, so that the prepared microspheres are high in sphericity, low in porosity and high in density, and compared with a common physical synthesis method, the particle size of the ceramic microspheres can be reduced to be within the range of 0.1-0.3 mm, and submillimeter-scale ceramic microspheres can be prepared.
本发明提供陶瓷微球及其制备方法，该制备方法包括以下步骤：S1：将陶瓷粉体加入连续相液体中，搅拌形成分散体；S2：向分散体中加入粘结剂，搅拌后形成微球，烧结；其中，连续相液体与陶瓷粉体的表面的亲疏水性相反，粘结剂与连续相液体的亲疏水性相反。该制备方法依靠粘结剂与连续相液体的液‑液两相界面处的张力形成的毛细管力使颗粒粘结，并在机械搅拌力的作用下压实紧密。由于陶瓷粉体颗粒与粘结剂形成的液相在液相中比在空气中分散得更均匀，粘结剂的表面张力也更小，因此制备的微球球形度高、孔隙率低、致密度高，相比于一般的物理合成方法，可以将陶瓷微球的粒径缩小到0.1～0.3毫米范围内，制备出亚毫米级的陶瓷微球。
Ceramic microspheres and preparation method thereof
The invention provides ceramic microspheres and a preparation method thereof. The preparation method comprises the following steps of: S1, adding ceramic powder into continuous phase liquid and stirring to form a dispersion; and S2, adding a binder into the dispersion, stirring to form microspheres, and sintering the microspheres. The hydrophilicity and hydrophobicity of the surface of the continuous phase liquid are opposite to those of the surface of the ceramic powder, and the hydrophilicity and hydrophobicity of the binder are opposite to those of the continuous phase liquid. According tothe preparation method, particles are bonded by capillary force formed by tension at a liquid-liquid two-phase interface of a binder and the continuous phase liquid, and are compacted tightly under the action of mechanical stirring force. The liquid phase formed by the ceramic powder particles and the binder is more uniformly dispersed in the liquid phase than in the air, and the surface tension of the binder is smaller, so that the prepared microspheres are high in sphericity, low in porosity and high in density, and compared with a common physical synthesis method, the particle size of the ceramic microspheres can be reduced to be within the range of 0.1-0.3 mm, and submillimeter-scale ceramic microspheres can be prepared.
本发明提供陶瓷微球及其制备方法，该制备方法包括以下步骤：S1：将陶瓷粉体加入连续相液体中，搅拌形成分散体；S2：向分散体中加入粘结剂，搅拌后形成微球，烧结；其中，连续相液体与陶瓷粉体的表面的亲疏水性相反，粘结剂与连续相液体的亲疏水性相反。该制备方法依靠粘结剂与连续相液体的液‑液两相界面处的张力形成的毛细管力使颗粒粘结，并在机械搅拌力的作用下压实紧密。由于陶瓷粉体颗粒与粘结剂形成的液相在液相中比在空气中分散得更均匀，粘结剂的表面张力也更小，因此制备的微球球形度高、孔隙率低、致密度高，相比于一般的物理合成方法，可以将陶瓷微球的粒径缩小到0.1～0.3毫米范围内，制备出亚毫米级的陶瓷微球。
Ceramic microspheres and preparation method thereof
陶瓷微球及其制备方法
LI BO (author) / WANG HAO (author) / JIANG ZHENGGEN (author) / ZHANG HAN (author)
2021-03-02
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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