高压下绝缘体转变成导体的研究,不仅可以进一步推动固体物理、地球物理和天体物理的发展,而且还为人们获得特殊性能的材料开辟了一条新的途径.本工作,在静态高压下,通过电阻测量,第一次观测到了聚四氟乙烯由绝缘体转变成金属.我们采用的高压装置是无封垫对顶压砧型容器.压砧的材料为碳化钨.上压砧为锥形压砧,它的顶尖是一个直径很小的圆平面,直径一般为0.2mm左右.下压砧为平面压砧.外力是通过一个微型压机来施加的. The research on the conversion of insulator under high voltage into a conductor can not only further promote the development of solid state physics, geophysics and astrophysics, but also open up a new way for people to obtain special properties of materials.In this work, under static high pressure, Measurement, the first time observed polytetrafluoroethylene from insulator to metal.We use the high-pressure device is a non-sealing on the pressure anvil container.According to the material of the anvil tungsten carbide.An upper pressure anvil for the cone anvil, Its tip is a small diameter circular plane, the diameter is generally about 0.2mm. The anvil is a flat surface anvil. External force is applied by a mini-press.