【作者】 宋永忠； 翟更太； 史景利； 郭全贵； 刘朗；

【Author】 Song Yongzhong~(1,2),Zhai Gengtai~2,Shi Jingli~2,Guo Quangui~2,Liu LANG~2 (1 National Key Laboratory of Advanced Functional Composite Materials,Aerospace Research Institute of Materials & Processing Technology,Beijing 100076) (2 Key Laboratory of Carbon Materials,Institute of Coal Chemistry, Chinese Academy of Sciences,Taiyuan 030001)

【机构】 航天材料及工艺研究所先进功能复合材料技术国防科技重点实验室； 中国科学院山西煤炭化学研究所炭材料重点实验室山西；

【摘要】 以在不同氧化温度下制备的氧化中间相沥青为原料成功制备出具有不同密度的炭/石墨材料,根据对样品物理性能和微观结构的研究得出最佳的工艺条件。以150MPa压制的坯体经过2200℃石墨化后得到具有高密度(2.02g/cm~3)、低孔率(2.03%)、大体积收缩(44.86%)、很高的弯曲强度和压缩强度(70.3MPa和123.3MPa)的样品。该样品具有均匀致密的结构。实验证明,氧化中间相沥青是制备高性能炭石墨材料良好的前驱体。更多还原

【Abstract】 Carbon grains for binderless molding were prepared by oxidization treatment of mesophase pitch at different temperatures,and carbon materials were prepared.The effects of oxidation temperature,molding pressure,and heat-treatment temperature on the physical properties of the carbon materials were investigated.Results indicate that increase in molding pressure significantly increases mechanical strength of the resulting carbon materials.The resultant carbon materials with homogeneous fine-mosaic texture,high density and strength were obtained when the grains were oxidized at 200℃.The high-performance carbon materials were obtained when the grains oxidized at 200℃molded at 150 MPa and then graphitized at 2200℃.The density, porosity,bending strength,and compressive strength are 2.02 g/cm~3,2.03%,70.3 MPa,123.3 MPa, respectively.Results show that oxidized mesophase pitch is a good precursor for preparing high-performance carbon materials.更多还原