Teflon pad is also called PTFE plate. It is a good sealing material. It is suitable for surface seals with uneven flanges. It has certain compensation effect on flange sealing surfaces with uneven marks or scratches. Dongguan PTFE gasket manufacturers summarize the PTFE gasket in the process of use should pay attention to matters.

The Teflon pad has "cold flow". That is, the plastic deformation of the material product under the action of long-term continuous load, which imposes certain restrictions on its application. For example, when PTFE is used as a gasket, the bolts are tightly tightened so that when the specific compressive stress is exceeded, the gasket is generated (creep and crushed. These disadvantages can be achieved by adding appropriate fillers and improving The structure of the part is overcome, etc. The melt viscosity is very high and does not flow at high temperatures. Even if it is heated to the decomposition temperature, it does not flow, which makes it impossible to adopt the general thermoplastic molding method, and the Dongguan PTFE gasket Manufacturers should use a sintering method similar to powder metallurgy.

The low thermal conductivity and poor thermal conductivity not only prevent it from being used as a bearing material, but also make it impossible to quench when manufacturing thick-walled articles. The coefficient of linear expansion of the Teflon pad is 10 times that of steel, which is larger than that of most plastics, and its linear expansion coefficient changes irregularly with temperature. When applying PTFE, if the performance of this aspect is not enough, it is easy to cause losses. The cracking rate of polytetrafluoroethylene is gradually accelerated, and the decomposition products are mainly tetrafluoroethylene, perfluoropropylene and octafluorocyclobutane. The decomposition product has a very small amount of highly toxic perfluoroisobutylene. Therefore, Dongguan PTFE gasket manufacturers pay attention to the heating temperature of PTFE gasket can not exceed 400, and the laboratory should have a good ventilation system, which is conducive to the elimination of toxic gases. Teflon pads have outstanding non-stick properties that limit their industrial applications. It is an excellent release material that makes it extremely difficult to bond to the surface of other objects.