Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Low-cost hollow silicon carbide microsphere and preparation method thereof
The invention discloses a low-cost hollow silicon carbide microsphere and a preparation method thereof, and belongs to the field of inorganic filler preparation. The method comprises the following steps: mixing silica sol, cane sugar, a modifier and multilayer graphene according to a dosage ratio, and performing spray drying by a spray dryer to obtain microspheres; carrying out coating treatment, drying treatment, carbonization treatment and sintering treatment on the microbeads to obtain sintered microbeads; and treating the sintered micro-beads by adopting a vapor deposition process to obtain the low-cost hollow silicon carbide micro-beads of which the interiors are honeycomb-shaped silicon carbide frameworks and the exteriors are compact silicon carbide shells. On the basis that the silicon source and the carbon source are in full contact and the compressive strength of the prepared hollow silicon carbide microbeads is enhanced, tedious treatment such as alcohol gel forming, aging agent adding and medium replacing is not needed, the operation process is simple, and the manufacturing cost is low.
本发明公开了一种低成本空心碳化硅微珠及其制备方法，属于无机填料制备领域。该方法包括以下步骤：将硅溶胶、蔗糖、改性剂、多层石墨烯按照用量比混合，经喷雾干燥机喷雾干燥成微珠；对微珠进行包膜处理、干燥处理、碳化处理和烧结处理后得到的烧结后的微珠；并采用气相沉积工艺对烧结后的微珠进行处理，得到内部为蜂窝状的碳化硅骨架，外部为致密的碳化硅壳的低成本空心碳化硅微珠。本发明在解决了硅源与碳源充分接触，增强所制得空心碳化硅微珠的抗压强度的基础上，无需形成醇凝胶、加入老化剂、和置换介质等繁琐处理，操作工艺简单，制作成本低。
Low-cost hollow silicon carbide microsphere and preparation method thereof
The invention discloses a low-cost hollow silicon carbide microsphere and a preparation method thereof, and belongs to the field of inorganic filler preparation. The method comprises the following steps: mixing silica sol, cane sugar, a modifier and multilayer graphene according to a dosage ratio, and performing spray drying by a spray dryer to obtain microspheres; carrying out coating treatment, drying treatment, carbonization treatment and sintering treatment on the microbeads to obtain sintered microbeads; and treating the sintered micro-beads by adopting a vapor deposition process to obtain the low-cost hollow silicon carbide micro-beads of which the interiors are honeycomb-shaped silicon carbide frameworks and the exteriors are compact silicon carbide shells. On the basis that the silicon source and the carbon source are in full contact and the compressive strength of the prepared hollow silicon carbide microbeads is enhanced, tedious treatment such as alcohol gel forming, aging agent adding and medium replacing is not needed, the operation process is simple, and the manufacturing cost is low.
本发明公开了一种低成本空心碳化硅微珠及其制备方法，属于无机填料制备领域。该方法包括以下步骤：将硅溶胶、蔗糖、改性剂、多层石墨烯按照用量比混合，经喷雾干燥机喷雾干燥成微珠；对微珠进行包膜处理、干燥处理、碳化处理和烧结处理后得到的烧结后的微珠；并采用气相沉积工艺对烧结后的微珠进行处理，得到内部为蜂窝状的碳化硅骨架，外部为致密的碳化硅壳的低成本空心碳化硅微珠。本发明在解决了硅源与碳源充分接触，增强所制得空心碳化硅微珠的抗压强度的基础上，无需形成醇凝胶、加入老化剂、和置换介质等繁琐处理，操作工艺简单，制作成本低。
Low-cost hollow silicon carbide microsphere and preparation method thereof
一种低成本空心碳化硅微珠及其制备方法
LUO JIANHUA (Autor:in) / WANG JIAN (Autor:in) / SHI KEYU (Autor:in)
07.11.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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