The PTFE filling technology in China is all completed by processing and production enterprises. For the preparation of parts and components in the automobile and other industries, the modification methods toaster bag mainly include surface modification, filling modification and blending modification. The above-mentioned surface modification methods are mainly suitable for PTFE membranes. These fillers are required to withstand the sintering temperature of PTFE; they do not react with PTFE; In addition, it has a certain particle size and can improve some physical and chemical properties of PTFE. Thereby increasing its wettability, improving its surface activity, and easy to composite with other materials.

Filling modification Add fillers to PTFE to improve and overcome the shortcomings of PTFE. Surface deposition modification, immersing PTFE in a colloidal solution of some metal hydroxides, so [...]

In this case, the only available valve is the new ceramic ball valve. Hydrochloric acid medium: Most metal materials are not resistant to hydrochloric acid corrosion (including various stainless steel PTFE coated adhesive tapes materials), and high-silicon ferro-molybdenum can only be used in hydrochloric acid below 50°C and 30%. The corrosion of sulfuric acid with different concentrations and temperatures is quite different.

Sulfuric acid medium: As one of the strong corrosive media, sulfuric acid is an important industrial raw material with a wide range of uses. Nitric acid medium: most metals are quickly corroded and destroyed in nitric acid.For valves under corrosive medium conditions, anti-corrosion is the most critical part of chemical equipment. Therefore, the scientific nature of the material selection should be paid attention to when selecting the chemical [...]

The inner and outer walls of the cavity lining of the workpiece are under the condition of equal pressure difference. Layer separation problem. The elastic mold makes full use of its elasticity to compress and close the PTFE powder in the cavity. It is widely used in severely corrosive occasions such as petroleum, chemical, pesticide, dye, pharmaceutical, military industry, and pipeline system medium or material transportation.

On the lining wall, and the thickness of the PTFE lining remains the same, it completely solves the problem of the molding technology of the cavity of the complex PTFE Coated Fabric Manufacturers shape workpiece and the problem of inconsistent lining thickness that causes local stress concentration and cracks. The PTFE lining isobaric forming technology can be applied to the cavity forming of valves [...]

It is not suitable for nuclear working conditions, lye or fluoride applications. It cannot be used in strong oxidants such as oxygen, nor is it suitable In the case of concentrated sulfuric acid and nitric acid, otherwise the packing will break easily and cause leakage.1 background During the on-site use of the regulating valve, due to various reasons such as the environment, working conditions and the structure of the valve body, the packing of the regulating valve leaks. Because graphite is easy to adsorb gas or water molecules, it forms a layer on its surface Very thin air or water film to prevent the penetration of process media.

PTFE Polytetrafluoroethylene is a synthetic resin material with stable physical and chemical properties, good resistance to chemical corrosion, and an excellent sealing material [...]