膨胀石墨材料在高温色谱仪中的应用

APPLICATION OF EXPANDED GRAPHITE TO CHROMATGRAPH AT HIGH TEMPERATURE

由石油焦制得的人造膨胀石墨材料具有良好的物理机械、耐温和耐腐蚀等性能，当其作为高温气相色谱的密封垫片时．在450℃高温下仍能保持良好的密封，从而提高了分析定量的准确度，石墨垫片的应用为高效及高温毛细管分离技术提高了保证。

This paper presents the artifical expanded graphite made from petro coke, which has good properties ofphysical machinery, heat-resisting and corrosion-resisting. When it is used as the seal for chromatgraph at high temperature it has good seal at 450℃. Therefor the precise of analytical quantity is risen. The application of artifical expanded graphitc pad provides ensure for good efficiency separating technique of capillary chromatgraph at high temperature.