以黑龙江萝北石墨为原料,采用H_3PO_4和CH_3COOH插层石墨,微波膨化制备了无硫膨胀石墨。采用IP、XRD和SEM测试技术进行结构表征,并对比不同插层剂制备的膨胀石墨微波膨化的膨胀效果与结构差异。研究表明:对于磷酸法制备的膨胀石墨,其微波膨胀效果与结构完整性均优于冰乙酸法制备的膨胀石墨,磷酸法制备的膨胀石墨的膨胀倍率可达到282mL·g~(-1)。 Taking Luobei graphite of Heilongjiang as raw material, H_3PO_4 and CH_3COOH intercalated graphite were used to prepare sulfur-free expanded graphite by microwave puffing. The structure characterization was carried out by IP, XRD and SEM, and the expansion effect and structure difference of expanded graphite with different intercalation agents were compared. The results show that the expansion and the structural integrity of the expanded graphite prepared by the phosphoric acid method are better than the expanded graphite prepared by the glacial acetic acid method. The expansion ratio of the expanded graphite prepared by the phosphoric acid method can reach 282 mL · g -1.