Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of SiCf/SiC composite material added with graphene
The invention belongs to the technical field of preparation of SiCf/SiC composite materials, and particularly relates to a preparation method of a SiCf/SiC composite material added with graphene. The preparation method comprises the steps of mixing a graphene solution and a silicon carbide ceramic precursor, mechanically stirring, and ultrasonically dispersing to obtain a graphene-containing ceramic precursor solution; putting a silicon carbide fiber preform into a deposition furnace for pyrolytic carbon interface layer deposition, and introducing mixed gas of Ar and C3H6 to obtain a silicon carbide fiber preform with a pyrolytic carbon interface layer; immersing the preform with the interface layer into the graphene-containing ceramic precursor solution, and putting the preform into a pressure impregnation furnace; after vacuumizing, introducing argon for dipping; discharging the graphene-containing ceramic precursor solution, introducing argon, heating and preserving heat, and cooling to room temperature along with the furnace to finish curing; vacuumizing the pressure in the furnace, heating and preserving heat, continuously heating and preserving heat, and cooling along with the furnace; and after the preform is taken out, completing densification treatment, and obtaining the graphene reinforced SiCf/SiC composite material. The mechanical property and thermal conductivity of the material are improved.
本发明属于SiCf/SiC复合材料制备技术领域，具体涉及一种添加石墨烯的SiCf/SiC复合材料制备方法。将石墨烯溶液和碳化硅陶瓷先驱体进行混合，机械搅拌后超声分散，得到含石墨烯的陶瓷先驱体溶液；将碳化硅纤维预制件放入沉积炉进行热解碳界面层沉积，通入Ar和C3H6的混合气，得到带热解碳界面层的碳化硅纤维预制件；将带界面层的预制件浸入到含石墨烯的陶瓷先驱体溶液中，放到压力浸渍炉中；抽真空后，充入氩气浸渍；排出含石墨烯的陶瓷先驱体溶液后，通入氩气，升温保温后随炉冷却降至室温，完成固化；将炉内压力抽真空，升温保温，继续升温保温，随炉冷却；将预制件取出后，完成致密化处理，得到带有石墨烯增强的SiCf/SiC复合材料。本发明提高材料的力学性能和导热性。
Preparation method of SiCf/SiC composite material added with graphene
The invention belongs to the technical field of preparation of SiCf/SiC composite materials, and particularly relates to a preparation method of a SiCf/SiC composite material added with graphene. The preparation method comprises the steps of mixing a graphene solution and a silicon carbide ceramic precursor, mechanically stirring, and ultrasonically dispersing to obtain a graphene-containing ceramic precursor solution; putting a silicon carbide fiber preform into a deposition furnace for pyrolytic carbon interface layer deposition, and introducing mixed gas of Ar and C3H6 to obtain a silicon carbide fiber preform with a pyrolytic carbon interface layer; immersing the preform with the interface layer into the graphene-containing ceramic precursor solution, and putting the preform into a pressure impregnation furnace; after vacuumizing, introducing argon for dipping; discharging the graphene-containing ceramic precursor solution, introducing argon, heating and preserving heat, and cooling to room temperature along with the furnace to finish curing; vacuumizing the pressure in the furnace, heating and preserving heat, continuously heating and preserving heat, and cooling along with the furnace; and after the preform is taken out, completing densification treatment, and obtaining the graphene reinforced SiCf/SiC composite material. The mechanical property and thermal conductivity of the material are improved.
本发明属于SiCf/SiC复合材料制备技术领域，具体涉及一种添加石墨烯的SiCf/SiC复合材料制备方法。将石墨烯溶液和碳化硅陶瓷先驱体进行混合，机械搅拌后超声分散，得到含石墨烯的陶瓷先驱体溶液；将碳化硅纤维预制件放入沉积炉进行热解碳界面层沉积，通入Ar和C3H6的混合气，得到带热解碳界面层的碳化硅纤维预制件；将带界面层的预制件浸入到含石墨烯的陶瓷先驱体溶液中，放到压力浸渍炉中；抽真空后，充入氩气浸渍；排出含石墨烯的陶瓷先驱体溶液后，通入氩气，升温保温后随炉冷却降至室温，完成固化；将炉内压力抽真空，升温保温，继续升温保温，随炉冷却；将预制件取出后，完成致密化处理，得到带有石墨烯增强的SiCf/SiC复合材料。本发明提高材料的力学性能和导热性。
Preparation method of SiCf/SiC composite material added with graphene
一种添加石墨烯的SiCf/SiC复合材料制备方法
JIA XINLEI (Autor:in) / LU YONGHENG (Autor:in) / LIU JIANCHENG (Autor:in) / SHAN HONGYI (Autor:in) / DONG QIUSHI (Autor:in)
22.06.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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