Graphite composite material and preparation method and application thereof

The invention relates to a graphite composite material and a preparation method and application thereof. The graphite composite material is prepared from the following raw materials in percentage by mass: 55 to 75 percent of carbon-based aggregate, 15 to 25 percent of pore forming agent and 15 to 30 percent of polyamide acid. The graphite composite material comprises the carbon-based aggregate, the pore-forming agent and the polyamide acid in a specific proportion relation, so that the graphite composite material has excellent tensile strength, bending strength and through hole rate, and the efficiency of the graphite composite material for removing carbon wrappage in the growth of silicon carbide crystals can be improved. 本申请涉及一种石墨复合材料及其制备方法与应用。以质量百分比计，石墨复合材料的制备原料包括：55%~75%碳基骨料、15%~25%造孔剂、15%~30%聚酰胺酸。该石墨复合材料包括特定配比关系的碳基骨料、造孔剂和聚酰胺酸，使得石墨复合材料兼具优异的拉伸强度、抗弯强度和通孔率，能提高石墨复合材料在碳化硅晶体生长中去除碳包裹物的效率。