| 摘要 |
PURPOSE:To increase the homogeniety and the strength of an inner surface and pressure resistance by providing a constitution which is formed of a capillary column comprising fused silica, a bonding agent layer covering the outside of the column and a pressure resisting pipe covering the outside of the layer. CONSTITUTION:A bonding agent (e.g. commercially sold anaerobic bonding agent) 2 whose viscosity is 10 - 10<3> cps (20 deg.C) and hardening speed is 5 minutes or longer is applied on the entire surface of the outer wall part of a capillary tube 1 comprising fused silica. Thereafter, the tube 1 is inserted into a pressure resisting pipe (e.g. stainless steel pipe) 3. The length of the pipe 3 is shorter than the tube 1 (it is preferable that the difference in lengths is about 1 - 2 cm). The inner diameter of the pipe 3 is slightly larger than the outer diameter of the tube 1 (it is preferable that the difference between the inner diameter and the outer diameter is 0.1 mm or shorter). After the bonding agent 2 is hardened, the part of the tube 1 extruding from the pipe 3 is cut out. Thus a hollow column is formed. The surrounding part of the tube 1 is covered with a covering material (e.g. polyimide part) 4 so as to impart reinforcement and heat resistance. |
