CAJ | 학술논문

以中间相沥青和中间相沥青基碳纤维为原料，采用碳布热压法、液相浸渍法制备了二维和三维高导热碳/碳复合材料，且所制得复合材料的热导率分别高达443和340 W/(m·K)。依据碳/碳复合材料的热导率模型，分析了不同结构特征参数对材料热导率的影响。结果表明，基体碳热导率、孔隙率以及界面相厚度均会在一定程度上影响材料的导热性能。
이중간상력청화중간상력청기탄섬유위원료，채용탄포열압법、액상침지법제비료이유화삼유고도열탄/탄복합재료，차소제득복합재료적열도솔분별고체443화340 W/(m·K)。의거탄/탄복합재료적열도솔모형，분석료불동결구특정삼수대재료열도솔적영향。결과표명，기체탄열도솔、공극솔이급계면상후도균회재일정정도상영향재료적도열성능。
2D high thermal conductivity C/C composite and 3D high thermal conductiv-ity C/C composite were produced through hot pressing and liquid impregnating method, with mesophase pitch-based carbon fiber and mesophase pitch as raw materials. Ther-mal conductivity as high as 443 W/(m·K) and 340 W/(m·K) was achieved for 2D high thermal conductivity C/C composite and 3D high thermal conductivity C/C composite, respectively. The effects of structure parameters on the thermal conductivity were ana-lyzed according to the analytical thermal model of C/C composites. The results show that thermal conductivity of carbon matrix, porosity and interface have different effects on the thermal conductivity of composites.