为了使石墨粉体与树脂能够更好地结合，改善碳素制品的性能，首先在石墨粉体中原位合成不同酚醛树脂，再制备成炭／石墨（C／G）复合材料；分析了原位合成不同树脂的热性能，观察了炭／石墨复合材料的微观结构，比较了不同种类、含量的树脂制备炭／石墨复合材料的性能。结果表明：在0～900℃内，原位合成硼改性酚醛树脂（B-PFR）和邻甲环氧酚醛树脂（OCE-PFR）的热稳定性能较热塑性酚醛树脂（TFLPFR）和热固性酚醛树脂（TS-PFR）的好；原位合成的树脂经焙烧后，B-PFR-C／G中石墨颗粒和孔隙分布较均匀，其次为TP-PFR-C／G和TS-PFR-C／G；B-PFR-C／G的综合性能更好，树脂质量分数为359／6时其密度、硬度、抗压强度可分别达到1．58g·cm^-3，47．5HS，31．8MPa。
In order to combine the graphite powders and resin better, improve the performance of carbon product, phenol-formaldehyde resin（PFR）was in-situ synthesized in the graphite powders, which was used to prepare carbon/graphite （C/G） composites. The thermal performance of different resins prepared by in-situ synthesis was analyzed. The microstructure of the composites was observed. The performance of the C/G composites prepared with different kinds and contents resins was compared. The results show that the thermal stability performance of boron PFR（B-PFR） and o-cresol epoxy PFR（OCE-PFR） were better than thermoplastic phenolic （TP） PFR （TP-PFR） and thermosetting（TS） PFR （TS-PFR） in 0～900℃. The graphite granules and holes in B-PFR-C/G distributed more evenly than those in TP-PFR and TS~PFR after calcination. The comprehensive performance of B-PFR-C/G was better, the density, hardness and compressive strength were 1.58g·cm^-3, 47. 5 HS and 31.8 MPa when the resin content was 35wt%.
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