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C/SiC composite material and preparation method thereof, heat conduction member and heating furnace
The invention provides a C/SiC composite material and a preparation method thereof, a heat conduction member and a heating furnace, and the preparation method comprises the following preparation steps: mixing nanometer silicon powder with high-carbon-residue thermosetting phenolic resin to obtain first mixed slurry; impregnating carbon fibers in the first mixed slurry to obtain a prepreg; and carrying out carbonization and calcination treatment on the prepreg in sequence. According to the method, the nano silicon powder and the thermosetting phenolic resin are mixed firstly, so that more in-situ reaction points exist between the resin and the silicon powder, silicon and carbon are promoted to fully react in the calcining treatment process to form C/SiC, generation of free silicon can be reduced, the in-situ reaction temperature of Si and C can be reduced, and the production cost is reduced; in addition, the carbon fibers are soaked in the mixture, and the thermosetting phenolic resin and the silicon powder can better permeate into gaps of the carbon fibers, so that the carbon fiber/SiC composite material with higher density is obtained, and the mechanical property of the C/SiC composite material is improved.
本发明提供一种C/SiC复合材料及其制备方法、导热构件及加热炉，包括如下制备步骤：将纳米硅粉与高残炭热固性酚醛树脂进行混合，得到第一混合浆料；将碳纤维浸渍于所述第一混合浆料中，得到预浸料；对所述预浸料依次进行碳化、煅烧处理。上述方法将纳米硅粉与热固性酚醛树脂先进行混合，使得树脂与硅粉之间具有更多的原位反应点，不仅促进硅和碳之间在煅烧处理过程中充分反应形成C/SiC，可降低游离硅的产生，还可降低Si与C原位反应温度，降低生产成本；此外将碳纤维浸渍于混合料中，热固性酚醛树脂和硅粉可以更好地渗入到碳纤维的间隙中，从而获得密度更高的碳纤维/SiC复合材料，提高了C/SiC复合材料的力学性能。
C/SiC composite material and preparation method thereof, heat conduction member and heating furnace
The invention provides a C/SiC composite material and a preparation method thereof, a heat conduction member and a heating furnace, and the preparation method comprises the following preparation steps: mixing nanometer silicon powder with high-carbon-residue thermosetting phenolic resin to obtain first mixed slurry; impregnating carbon fibers in the first mixed slurry to obtain a prepreg; and carrying out carbonization and calcination treatment on the prepreg in sequence. According to the method, the nano silicon powder and the thermosetting phenolic resin are mixed firstly, so that more in-situ reaction points exist between the resin and the silicon powder, silicon and carbon are promoted to fully react in the calcining treatment process to form C/SiC, generation of free silicon can be reduced, the in-situ reaction temperature of Si and C can be reduced, and the production cost is reduced; in addition, the carbon fibers are soaked in the mixture, and the thermosetting phenolic resin and the silicon powder can better permeate into gaps of the carbon fibers, so that the carbon fiber/SiC composite material with higher density is obtained, and the mechanical property of the C/SiC composite material is improved.
本发明提供一种C/SiC复合材料及其制备方法、导热构件及加热炉，包括如下制备步骤：将纳米硅粉与高残炭热固性酚醛树脂进行混合，得到第一混合浆料；将碳纤维浸渍于所述第一混合浆料中，得到预浸料；对所述预浸料依次进行碳化、煅烧处理。上述方法将纳米硅粉与热固性酚醛树脂先进行混合，使得树脂与硅粉之间具有更多的原位反应点，不仅促进硅和碳之间在煅烧处理过程中充分反应形成C/SiC，可降低游离硅的产生，还可降低Si与C原位反应温度，降低生产成本；此外将碳纤维浸渍于混合料中，热固性酚醛树脂和硅粉可以更好地渗入到碳纤维的间隙中，从而获得密度更高的碳纤维/SiC复合材料，提高了C/SiC复合材料的力学性能。
C/SiC composite material and preparation method thereof, heat conduction member and heating furnace
C/SiC复合材料及其制备方法、导热构件及加热炉
LIAO JIQIAO (author) / LI JUN (author) / WANG RUIYUAN (author) / LI CHANG (author) / LIU XUEWEN (author) / WANG YUEJUN (author) / GONG YULIANG (author)
2024-03-29
Patent
Electronic Resource
Chinese
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