浸渗石墨密封材料的制备研究  

Preparation of graphite sealing material by impregnation method

作　　者：金燚翥 李季 

机构地区：[1]哈尔滨电碳厂,哈尔滨150025 [2]驻一二〇厂军代表室,哈尔滨150025

出　　处：《炭素》2015年第3期14-16,34,共4页Carbon

摘　　要：本论文针对石墨材料开孔率大而影响了石墨密封件的性能和应用的问题，以实验研究为基础，利用煤油气相浸渗工艺解决石墨材料开孔率过大的问题，探索适合投入工业化的石墨材料致密工艺，使石墨材料能更好的应用于密封领域。设计了以煤油炭化生成碳微粒取代传统的金属、树脂、无机盐浸渗石墨的实验，创新的以煤油作为浸渗剂于石墨材料的浸渗实验，采取正交试验方法研究了煤油浸渗石墨材料的开孔率影响因素，并通过SEM、XRD对浸渗前后石墨材料进行了测试。实验结果表明，制备工艺条件为9h浸渗时间，900℃炭化温度，60min炭化时间，可使原料石墨件开孔率最高可降低67.31％，开孔率控制在8％～9％内。有效的提高了石墨密封件的密封性和耐磨性，SEM、XRD证明煤油浸渗对石墨材料的孔隙致密有明显的效果。The big opening rate of the graphite sealing material greatly affects the properties and applications of graphite seals. Based on experimental study, kerosene charring formation of carbon particles was replaced the traditional metal, resin, inorganic salt infiltration graphite experiments, innovative kerosene as infiltration agents on the infiltration of graphite materials experiment. The influencing factors of the opening rate of the kerosene infiltration of graphite materials were presented by SEM, XRD. on the infiltration before and after the graphite materials was tested. The experimental results show that preparation conditions for 9h infiltration time, carbonization temperature of 900℃, 60 min charring time make the raw material graphite. The opening rate can be reduced to a maximum of 67.31%, porosity control in the 8% to 9%. Effectively improvement the graphite seal tightness and wear resistance, SEM, XRD, provevd significant effect of the kerosene infiltration of graphite materials, pore dense.

关 键 词：煤油 石墨材料 浸渗剂 开孔率 

分 类 号：TQ165[化学工程—高温制品工业]