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A platform for research: civil engineering, architecture and urbanism
Gradient density carbon-ceramic composite material and preparation method thereof
The invention provides a gradient density carbon-ceramic composite material and a preparation method thereof. The method comprises the following steps: preparing a porous carbon fiber matrix; preparing a carbon-ceramic panel with uniform density by using the porous carbon fiber matrix; determining a threshold value of the number of times of preparation of the carbon-ceramic panel with the gradient density from the carbon-ceramic panel with the uniform density; determining the volume of the precursor solution required when the carbon-ceramic panel with uniform density is impregnated every time; pouring the precursor solution into a pressure container containing a carbon-ceramic panel with uniform density according to the volume required by each time of impregnation, and sequentially performing vacuum impregnation, curing and sintering to finish one-time preparation until the preparation times reach a preparation time threshold value, so as to obtain the carbon-ceramic panel with gradient density; and compounding a high-emissivity coating on the surface of the gradient-density carbon-ceramic panel to obtain the gradient-density carbon-ceramic composite material. The gradient density carbon-ceramic composite material prepared by the invention has the advantages of light weight, excellent temperature resistance and excellent heat insulation performance.
本发明提供了一种梯度密度碳‑陶瓷复合材料及其制备方法，该方法包括：制备多孔碳纤维基体；利用多孔碳纤维基体制备密度均匀的碳‑陶瓷面板；确定由密度均匀的碳‑陶瓷面板得到梯度密度的碳‑陶瓷面板的制备次数阈值；确定每次浸渍密度均匀的碳‑陶瓷面板时所需的前驱体溶液的体积；将前驱体溶液按照每次浸渍所需的体积倒入容纳有密度均匀的碳‑陶瓷面板的压力容器中，依次进行真空浸渍、固化和烧结，完成一次制备，直至制备的次数达到制备次数阈值，得到梯度密度的碳‑陶瓷面板；在梯度密度的碳‑陶瓷面板的表面复合高发射率涂层，得到梯度密度碳‑陶瓷复合材料。本发明制备的梯度密度碳‑陶瓷复合材料兼具轻量化、优异的耐温性能和隔热性能。
Gradient density carbon-ceramic composite material and preparation method thereof
The invention provides a gradient density carbon-ceramic composite material and a preparation method thereof. The method comprises the following steps: preparing a porous carbon fiber matrix; preparing a carbon-ceramic panel with uniform density by using the porous carbon fiber matrix; determining a threshold value of the number of times of preparation of the carbon-ceramic panel with the gradient density from the carbon-ceramic panel with the uniform density; determining the volume of the precursor solution required when the carbon-ceramic panel with uniform density is impregnated every time; pouring the precursor solution into a pressure container containing a carbon-ceramic panel with uniform density according to the volume required by each time of impregnation, and sequentially performing vacuum impregnation, curing and sintering to finish one-time preparation until the preparation times reach a preparation time threshold value, so as to obtain the carbon-ceramic panel with gradient density; and compounding a high-emissivity coating on the surface of the gradient-density carbon-ceramic panel to obtain the gradient-density carbon-ceramic composite material. The gradient density carbon-ceramic composite material prepared by the invention has the advantages of light weight, excellent temperature resistance and excellent heat insulation performance.
本发明提供了一种梯度密度碳‑陶瓷复合材料及其制备方法，该方法包括：制备多孔碳纤维基体；利用多孔碳纤维基体制备密度均匀的碳‑陶瓷面板；确定由密度均匀的碳‑陶瓷面板得到梯度密度的碳‑陶瓷面板的制备次数阈值；确定每次浸渍密度均匀的碳‑陶瓷面板时所需的前驱体溶液的体积；将前驱体溶液按照每次浸渍所需的体积倒入容纳有密度均匀的碳‑陶瓷面板的压力容器中，依次进行真空浸渍、固化和烧结，完成一次制备，直至制备的次数达到制备次数阈值，得到梯度密度的碳‑陶瓷面板；在梯度密度的碳‑陶瓷面板的表面复合高发射率涂层，得到梯度密度碳‑陶瓷复合材料。本发明制备的梯度密度碳‑陶瓷复合材料兼具轻量化、优异的耐温性能和隔热性能。
Gradient density carbon-ceramic composite material and preparation method thereof
一种梯度密度碳-陶瓷复合材料及其制备方法
LI JIAN (author) / WANG MENG (author) / GAO YUZHI (author) / LIU XIAOBO (author) / ZHANG ENSHUANG (author) / ZHANG YANG (author) / SUN KUO (author) / SU LIJUN (author) / LI WENJING (author) / ZHAO YINGMIN (author)
2021-12-14
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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