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Preparation method of pitch-based carbon/carbon composite material with high thermal conductivity in thickness direction
The invention relates to a preparation method of a pitch-based carbon/carbon composite material with high thermal conductivity in the thickness direction, which comprises the following steps: firstly, preparing a one-dimensional composite material preform by adopting a hot-pressing curing process, then carrying out laser drilling, dipping, cracking, carbonizing and chemical vapor infiltration in the thickness direction, and finally carrying out graphitization treatment on the preform. Compared with the prior art, high heat conduction performance in the thickness direction is achieved, meanwhile, the problem of anisotropy of the heat conduction performance of a one-dimensional carbon/carbon composite material is solved, and designability of the structure and material performance of the asphalt-based composite material is improved.
本发明涉及一种厚度方向高导热率沥青基碳/碳复合材料的制备方法，首先采用热压固化工艺制成一维复合材料预制体，而后在厚度方向进行激光打孔、浸渍裂解碳化、化学气相渗透，最后进行对预制体进行石墨化处理的制备工艺。与现有技术相比，本发明实现厚度方向具有高导热性能，同时，解决了一维碳/碳复材导热性能各向异性的问题，提高了沥青基复合材料结构和材料性能的可设计性。
Preparation method of pitch-based carbon/carbon composite material with high thermal conductivity in thickness direction
The invention relates to a preparation method of a pitch-based carbon/carbon composite material with high thermal conductivity in the thickness direction, which comprises the following steps: firstly, preparing a one-dimensional composite material preform by adopting a hot-pressing curing process, then carrying out laser drilling, dipping, cracking, carbonizing and chemical vapor infiltration in the thickness direction, and finally carrying out graphitization treatment on the preform. Compared with the prior art, high heat conduction performance in the thickness direction is achieved, meanwhile, the problem of anisotropy of the heat conduction performance of a one-dimensional carbon/carbon composite material is solved, and designability of the structure and material performance of the asphalt-based composite material is improved.
本发明涉及一种厚度方向高导热率沥青基碳/碳复合材料的制备方法，首先采用热压固化工艺制成一维复合材料预制体，而后在厚度方向进行激光打孔、浸渍裂解碳化、化学气相渗透，最后进行对预制体进行石墨化处理的制备工艺。与现有技术相比，本发明实现厚度方向具有高导热性能，同时，解决了一维碳/碳复材导热性能各向异性的问题，提高了沥青基复合材料结构和材料性能的可设计性。
Preparation method of pitch-based carbon/carbon composite material with high thermal conductivity in thickness direction
一种厚度方向高导热率沥青基碳/碳复合材料的制备方法
DONG KAI (author) / WANG MENGQIAN (author) / TANG ZHEPENG (author) / LIU KUN (author) / XIE YUHUI (author) / CHENG RENZHENG (author) / DENG JIANJI (author)
2023-06-23
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
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