Surface properties and six chemical properties of PTFE plate materials

- Jun 11, 2019-

Surface properties of PTFE plate materials:

The PTFE plate material causes the fluorocarbon bond or carbon bond to break, generating a large amount of free radicals, thereby increasing the surface free energy of the PTFE plate and improving their wettability and adhesion. PTFE plates are widely used in high-low temperature, corrosion-resistant materials, insulating materials, anti-stick coatings, etc. in the atomic energy, aerospace, electronics, electrical, chemical, machinery, instrumentation, instrumentation, construction, textile, food and other industries. The tetrafluoride plate is immersed in a potassium acetate melt and treated at an appropriate temperature to form an active activation layer. The surface activity of the PTFE plate can be improved by adding a heat treatment to a mixture of sodium hydroxide and melamine. After a certain intensity and time of corona treatment, a PTFE plate can be formed. After chemical corrosion modification, the surface activity of the PTFE plate can be improved by a certain chemical reagent. The chemical reagents may be a metal ammonia sodium solution, a naphthalene tetrahydrofuran sodium solution, an alkali metal amalgam or a pentaalkyl iron solution.

        

Six chemical properties of PTFE plates:

1. The PTFE plate has good mechanical toughness at low temperature, and can maintain 5% elongation even when the temperature is lowered to -196 °C. PTFE plates are widely used in high-low temperature, corrosion-resistant materials, insulating materials, anti-stick coatings, etc. in the atomic energy, aerospace, electronics, electrical, chemical, machinery, instrumentation, instrumentation, construction, textile, food and other industries.

2. Resistant to most chemicals and solvents, showing inertness, acid and alkali resistance, water resistance and various organic solvents.

3. Weather resistance has the best aging life in plastics. PTFE plates are widely used in high-low temperature, corrosion-resistant materials, insulating materials, anti-stick coatings, etc. in the atomic energy, aerospace, electronics, electrical, chemical, machinery, instrumentation, instrumentation, construction, textile, food and other industries.

4. High lubrication is one of the lowest friction coefficients in solid materials.

 5. Non-adhesion is the material with the lowest surface tension in solid materials. It does not adhere to any substance. Its mechanical properties have a small coefficient of friction, only 1/5 of polyethylene, which is an important feature of the surface of perfluorocarbon. . Due to the low intermolecular force of the fluorocarbon chain, polytetrafluoroethylene is not sticky.

 6. Non-toxic, physiologically inert. As a long-term implanted artificial blood vessels and organs in the body, there is no adverse reaction. In a wide frequency range, PTFE has a low dielectric constant and dielectric loss, and a high breakdown voltage, volume resistivity, and arc resistance. www.yihaoptfe.com