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Microcosmic porous silicon carbide-based electromagnetic shielding material and preparation method thereof
The invention relates to a microcosmic porous silicon carbide-based electromagnetic shielding material and a preparation method thereof. The preparation method of the microcosmic porous silicon carbide-based electromagnetic shielding material comprises the following steps: (1) ultrasonically dispersing graphene, carbon nanotubes and polyvinylpyrrolidone (PVP) into a solvent to obtain a suspension, and then evaporating the solvent to obtain printing slurry; (2) a 3D printing technology is adopted, and the printing slurry is constructed into a three-dimensional graphene/carbon nanotube structure with interconnected micronetworks and a compact macrostructure according to a 3D printing model; (3) carrying out heat treatment on the three-dimensional graphene/carbon nanotube structure to remove the polymer PVP to obtain a three-dimensional graphene/carbon nanotube skeleton; and (4) coating the surfaces of the graphene and the carbon nanotubes in the graphene/carbon nanotube skeleton with a SiC matrix in situ by utilizing chemical vapor deposition, and finally obtaining the microscopic porous silicon carbide-based electromagnetic shielding material.
本发明涉及一种微观多孔的碳化硅基电磁屏蔽材料及其制备方法。所述微观多孔的碳化硅基电磁屏蔽材料的制备方法包括：(1)将石墨烯、碳纳米管和聚乙烯吡咯烷酮PVP超声分散至溶剂中，得到悬浮液后，再蒸发溶剂得到打印浆料；(2)采用3D打印技术，按3D打印模型将打印浆料构建成微观网络互连、宏观结构致密的三维石墨烯/碳纳米管结构；(3)将三维石墨烯/碳纳米管结构进行热处理移除聚合物PVP后，得到三维石墨烯/碳纳米管骨架；(4)利用化学气相沉积在石墨烯/碳纳米管骨架中石墨烯和碳纳米管表面原位包裹SiC基体，最终得到微观多孔的碳化硅基电磁屏蔽材料。
Microcosmic porous silicon carbide-based electromagnetic shielding material and preparation method thereof
The invention relates to a microcosmic porous silicon carbide-based electromagnetic shielding material and a preparation method thereof. The preparation method of the microcosmic porous silicon carbide-based electromagnetic shielding material comprises the following steps: (1) ultrasonically dispersing graphene, carbon nanotubes and polyvinylpyrrolidone (PVP) into a solvent to obtain a suspension, and then evaporating the solvent to obtain printing slurry; (2) a 3D printing technology is adopted, and the printing slurry is constructed into a three-dimensional graphene/carbon nanotube structure with interconnected micronetworks and a compact macrostructure according to a 3D printing model; (3) carrying out heat treatment on the three-dimensional graphene/carbon nanotube structure to remove the polymer PVP to obtain a three-dimensional graphene/carbon nanotube skeleton; and (4) coating the surfaces of the graphene and the carbon nanotubes in the graphene/carbon nanotube skeleton with a SiC matrix in situ by utilizing chemical vapor deposition, and finally obtaining the microscopic porous silicon carbide-based electromagnetic shielding material.
本发明涉及一种微观多孔的碳化硅基电磁屏蔽材料及其制备方法。所述微观多孔的碳化硅基电磁屏蔽材料的制备方法包括：(1)将石墨烯、碳纳米管和聚乙烯吡咯烷酮PVP超声分散至溶剂中，得到悬浮液后，再蒸发溶剂得到打印浆料；(2)采用3D打印技术，按3D打印模型将打印浆料构建成微观网络互连、宏观结构致密的三维石墨烯/碳纳米管结构；(3)将三维石墨烯/碳纳米管结构进行热处理移除聚合物PVP后，得到三维石墨烯/碳纳米管骨架；(4)利用化学气相沉积在石墨烯/碳纳米管骨架中石墨烯和碳纳米管表面原位包裹SiC基体，最终得到微观多孔的碳化硅基电磁屏蔽材料。
Microcosmic porous silicon carbide-based electromagnetic shielding material and preparation method thereof
一种微观多孔的碳化硅基电磁屏蔽材料及其制备方法
YOU XIAO (author) / DONG SHAOMING (author) / YANG JINSHAN (author) / ZHANG XIANGYU (author)
2024-04-30
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
B33Y
ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
,
Additive (generative) Fertigung, d. h. die Herstellung von dreidimensionalen [3D] Bauteilen durch additive Abscheidung, additive Agglomeration oder additive Schichtung, z. B. durch 3D- Drucken, Stereolithografie oder selektives Lasersintern
/
C09K
Materialien für Anwendungen, soweit nicht anderweitig vorgesehen
,
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR
/
H05K
PRINTED CIRCUITS
,
Gedruckte Schaltungen
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