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In-situ synthesized SiBCN/graphene composite material and preparation method thereof
The invention belongs to the technical field of ceramic compositions, and particularly relates to an in-situ synthesis SiBCN/graphene composite material and a preparation method thereof.The preparation method comprises the following steps that S1, raw materials are mixed and dissolved, PBSZ, water-soluble saccharides and nitrate are dissolved in o-xylene, and a raw material solution is prepared; s2, placing the raw material solution in a protective atmosphere, heating the raw material solution to a ceramization temperature of PBSZ, carrying out heat preservation, and carrying out an in-situ reaction to prepare a SiBCN/graphene composite material; wherein the ceramization temperature ranges from 1100 DEG C to 1400 DEG C, and the heating rate ranges from 1 DEG C/min to 10 DEG C/min; h2 released in the pyrolysis process of polyborosilane (PBSZ) is used as a carrier similar to CH4 transition in a CVD deposition process, and is matched with water-soluble saccharides as a carbon source to be uniformly dispersed in a precursor solution, so that graphene can uniformly grow in a matrix, an amorphous structure of SiBCN ceramic is also retained by subsequent low-temperature pyrolysis, and the graphene is protected from thermal damage.
本发明属于陶瓷组合物技术领域，具体涉及一种原位合成SiBCN/石墨烯复合材料及其制备方法，包括如下步骤：步骤S1，混合溶解原料，将PBSZ、水溶性糖类、硝酸盐溶解在邻二甲苯中，配制得到原料溶液；步骤S2，将原料溶液置于保护气氛中，加热至PBSZ的陶瓷化温度，保温并进行原位反应，制备得到SiBCN/石墨烯复合材料；其中所述陶瓷化温度的范围为1100‑1400℃，升温速率为1℃/min‑10℃/min；本发明利用聚硼硅烷（PBSZ）在热解过程中释放出的H2，作为类似于CVD沉积工艺中CH4过渡的载体，配合水溶性糖类作为碳源均匀分散在前驱体溶液中，使得石墨烯会在基体中均匀生长，随后低温热解也保留了SiBCN陶瓷的非晶态结构，保护了石墨烯免受热损伤。
In-situ synthesized SiBCN/graphene composite material and preparation method thereof
The invention belongs to the technical field of ceramic compositions, and particularly relates to an in-situ synthesis SiBCN/graphene composite material and a preparation method thereof.The preparation method comprises the following steps that S1, raw materials are mixed and dissolved, PBSZ, water-soluble saccharides and nitrate are dissolved in o-xylene, and a raw material solution is prepared; s2, placing the raw material solution in a protective atmosphere, heating the raw material solution to a ceramization temperature of PBSZ, carrying out heat preservation, and carrying out an in-situ reaction to prepare a SiBCN/graphene composite material; wherein the ceramization temperature ranges from 1100 DEG C to 1400 DEG C, and the heating rate ranges from 1 DEG C/min to 10 DEG C/min; h2 released in the pyrolysis process of polyborosilane (PBSZ) is used as a carrier similar to CH4 transition in a CVD deposition process, and is matched with water-soluble saccharides as a carbon source to be uniformly dispersed in a precursor solution, so that graphene can uniformly grow in a matrix, an amorphous structure of SiBCN ceramic is also retained by subsequent low-temperature pyrolysis, and the graphene is protected from thermal damage.
本发明属于陶瓷组合物技术领域，具体涉及一种原位合成SiBCN/石墨烯复合材料及其制备方法，包括如下步骤：步骤S1，混合溶解原料，将PBSZ、水溶性糖类、硝酸盐溶解在邻二甲苯中，配制得到原料溶液；步骤S2，将原料溶液置于保护气氛中，加热至PBSZ的陶瓷化温度，保温并进行原位反应，制备得到SiBCN/石墨烯复合材料；其中所述陶瓷化温度的范围为1100‑1400℃，升温速率为1℃/min‑10℃/min；本发明利用聚硼硅烷（PBSZ）在热解过程中释放出的H2，作为类似于CVD沉积工艺中CH4过渡的载体，配合水溶性糖类作为碳源均匀分散在前驱体溶液中，使得石墨烯会在基体中均匀生长，随后低温热解也保留了SiBCN陶瓷的非晶态结构，保护了石墨烯免受热损伤。
In-situ synthesized SiBCN/graphene composite material and preparation method thereof
原位合成SiBCN/石墨烯复合材料及其制备方法
ZHANG WENZHENG (author) / CHEN DAMING (author) / SUN BOQIAN (author) / SONG JUNTAO (author) / FAN ZHEQIONG (author) / LIU YUXUAN (author)
2024-11-22
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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