A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention discloses a carbon-ceramic composite material and a preparation method and application thereof.The preparation method comprises the steps that carbon fiber cloth and acrylic fiber mattresses are alternately stacked and continuously needled to obtain a carbon fiber/acrylic fiber prefabricated body, the carbon fiber/acrylic fiber prefabricated body is carbonized to obtain a carbonized prefabricated body, the carbonized prefabricated body is subjected to first graphitization to obtain a graphitized prefabricated body, and the graphitized prefabricated body is subjected to second graphitization to obtain the carbon-ceramic composite material; performing carbon densification on the graphitized preform to obtain a carbon-carbon porous body, performing second graphitization treatment on the carbon-carbon porous body, then performing SiC ceramic densification to obtain a carbon-ceramic composite blank, and finally performing third graphitization treatment on the carbon-ceramic composite blank to obtain the carbon-ceramic composite material. In the preparation process of the carbon fiber preform, the acrylic fiber web tire and the carbon cloth are added and subjected to laminated needling at a certain included angle, so that the uniformity of the carbon fibers in the preform is improved, enough strength between the layers can be ensured, and low cost, enough strength and resistance uniformity of the carbon-ceramic composite material are finally realized.
本发明公开了一种碳陶复合材料及其制备方法和应用，将碳纤维布与腈纶网胎交替层叠并连续针刺获得碳纤维/腈纶预制体，将碳纤维/腈纶预制体进行碳化处理获得碳化预制体，将碳化预制体进行第一次石墨化处理获得石墨化预制体，将石墨化预制体进行碳增密获得碳碳多孔体，将碳碳多孔体进行第二次石墨化处理，然后经SiC陶瓷增密获得碳陶复合坯料，最后将碳陶复合坯料进行第三次石墨化处理即得碳陶复合材料；本发明在碳纤维预制体制备过程中加入腈纶网胎以及碳布以一定夹角叠层针刺，既增加预制体中层间碳纤维均一性、又可以确保层间有足够强度，最终实现碳陶复合材料的低成本以及足够强的强度和电阻均匀性。
The invention discloses a carbon-ceramic composite material and a preparation method and application thereof.The preparation method comprises the steps that carbon fiber cloth and acrylic fiber mattresses are alternately stacked and continuously needled to obtain a carbon fiber/acrylic fiber prefabricated body, the carbon fiber/acrylic fiber prefabricated body is carbonized to obtain a carbonized prefabricated body, the carbonized prefabricated body is subjected to first graphitization to obtain a graphitized prefabricated body, and the graphitized prefabricated body is subjected to second graphitization to obtain the carbon-ceramic composite material; performing carbon densification on the graphitized preform to obtain a carbon-carbon porous body, performing second graphitization treatment on the carbon-carbon porous body, then performing SiC ceramic densification to obtain a carbon-ceramic composite blank, and finally performing third graphitization treatment on the carbon-ceramic composite blank to obtain the carbon-ceramic composite material. In the preparation process of the carbon fiber preform, the acrylic fiber web tire and the carbon cloth are added and subjected to laminated needling at a certain included angle, so that the uniformity of the carbon fibers in the preform is improved, enough strength between the layers can be ensured, and low cost, enough strength and resistance uniformity of the carbon-ceramic composite material are finally realized.
本发明公开了一种碳陶复合材料及其制备方法和应用，将碳纤维布与腈纶网胎交替层叠并连续针刺获得碳纤维/腈纶预制体，将碳纤维/腈纶预制体进行碳化处理获得碳化预制体，将碳化预制体进行第一次石墨化处理获得石墨化预制体，将石墨化预制体进行碳增密获得碳碳多孔体，将碳碳多孔体进行第二次石墨化处理，然后经SiC陶瓷增密获得碳陶复合坯料，最后将碳陶复合坯料进行第三次石墨化处理即得碳陶复合材料；本发明在碳纤维预制体制备过程中加入腈纶网胎以及碳布以一定夹角叠层针刺，既增加预制体中层间碳纤维均一性、又可以确保层间有足够强度，最终实现碳陶复合材料的低成本以及足够强的强度和电阻均匀性。
Carbon-ceramic composite material as well as preparation method and application thereof
一种碳陶复合材料及其制备方法和应用
2024-06-04
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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