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A platform for research: civil engineering, architecture and urbanism
High-density heat conduction composite material and preparation method thereof
The invention relates to a high-density heat conduction composite material and a preparation method thereof. The method comprises the following steps: preparing a high-thermal-conductivity carbon fiber preform; placing the high-thermal-conductivity carbon fiber preform in an atmosphere containing argon, hydrogen and methane gas, and depositing a carbon nanosheet interface layer on the fiber surface of the high-thermal-conductivity carbon fiber preform through a chemical vapor deposition method to obtain an intermediate blank; the volume flow rate ratio of argon to hydrogen to methane is (36-40): (1-2): (4-5), and the deposition temperature is 900-1000 DEG C; carrying out modification treatment on the intermediate green body through a dipping/curing/cracking PIP process by taking a carbon precursor solution as a dipping solution, and then carrying out graphitization treatment to obtain a carbon/carbon green body; and the zirconium-hafnium-tantalum-silicon quaternary mixed powder covers the carbon/carbon green body, and the high-density heat conduction composite material is prepared through a reactive infiltration method. The prepared high-density heat conduction composite material has the advantages of being high in density, high in heat conductivity, high in mechanical property and the like.
本发明涉及一种高致密热疏导复合材料及其制备方法。所述方法：制备高导热碳纤维预制体；将高导热碳纤维预制体置于包含氩气、氢气和甲烷气体的气氛中，通过化学气相沉积法在高导热碳纤维预制体的纤维表面沉积碳纳米片界面层，得到中间坯体；氩气、氢气和甲烷气体的体积流速比为(36～40)：(1～2)：(4～5)，沉积温度为900～1000℃；以碳前驱体溶液作为浸渍液通过浸渍/固化/裂解的PIP工艺对中间坯体进行改性处理，再经石墨化处理，得到碳/碳坯体；用锆铪钽硅四元混合粉覆盖碳/碳坯体通过反应熔渗法制得高致密热疏导复合材料。本发明制得的高致密热疏导复合材料具有高致密度、高热导率以及高力学性能等优点。
High-density heat conduction composite material and preparation method thereof
The invention relates to a high-density heat conduction composite material and a preparation method thereof. The method comprises the following steps: preparing a high-thermal-conductivity carbon fiber preform; placing the high-thermal-conductivity carbon fiber preform in an atmosphere containing argon, hydrogen and methane gas, and depositing a carbon nanosheet interface layer on the fiber surface of the high-thermal-conductivity carbon fiber preform through a chemical vapor deposition method to obtain an intermediate blank; the volume flow rate ratio of argon to hydrogen to methane is (36-40): (1-2): (4-5), and the deposition temperature is 900-1000 DEG C; carrying out modification treatment on the intermediate green body through a dipping/curing/cracking PIP process by taking a carbon precursor solution as a dipping solution, and then carrying out graphitization treatment to obtain a carbon/carbon green body; and the zirconium-hafnium-tantalum-silicon quaternary mixed powder covers the carbon/carbon green body, and the high-density heat conduction composite material is prepared through a reactive infiltration method. The prepared high-density heat conduction composite material has the advantages of being high in density, high in heat conductivity, high in mechanical property and the like.
本发明涉及一种高致密热疏导复合材料及其制备方法。所述方法：制备高导热碳纤维预制体；将高导热碳纤维预制体置于包含氩气、氢气和甲烷气体的气氛中，通过化学气相沉积法在高导热碳纤维预制体的纤维表面沉积碳纳米片界面层，得到中间坯体；氩气、氢气和甲烷气体的体积流速比为(36～40)：(1～2)：(4～5)，沉积温度为900～1000℃；以碳前驱体溶液作为浸渍液通过浸渍/固化/裂解的PIP工艺对中间坯体进行改性处理，再经石墨化处理，得到碳/碳坯体；用锆铪钽硅四元混合粉覆盖碳/碳坯体通过反应熔渗法制得高致密热疏导复合材料。本发明制得的高致密热疏导复合材料具有高致密度、高热导率以及高力学性能等优点。
High-density heat conduction composite material and preparation method thereof
一种高致密热疏导复合材料及其制备方法
ZHANG BAOPENG (author) / ZUO HONGJUN (author) / HAO NAIRONG (author) / LIU WEI (author) / SUN TONGCHEN (author) / PEI YUCHEN (author)
2024-02-06
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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