PTFE

Poly Tetra fluoroethylene (PTFE), also known as teflon. Our factory can provide injection molding services and CNC machining services.PTFE is made into various PTFE insulator parts by PTFE machining service, and it generally can not be produced into products through injection molding.PTFE insulation has the characteristics of resistance to acid, alkali and various organic solvents, and it is almost insoluble in all solvents.The melting point of PTFE is about 327℃.

Advantages of PTFE insulator:

High temperature resistance of teflon insulation - operating temperature up to 250℃.

Low temperature resistance of teflon insulated product - good mechanical toughness; The elongation of 5% can be maintained even when the temperature drops to -196℃.

Corrosion resistance of PTFE insulator - Inert to most chemicals and solvents,capable of strong acid and alkali, water and various organic solvents.

Weather resistant of PTFE insulated part -It is the best aging life of plastics.

High lubrication of PTFE insulator - It is a plastic product with the lowest friction coefficient among solid materials.

Non-adhesion of PTFE insulator - it is the minimum surface tension in a solid material and does not adhere to anything.

Non-toxic of PTFE insulator -it has physiological inertia, as artificial blood vessels and organs implanted in the body for a long time without adverse reactions.

Electrical insulation of PTFE insulation- it can resist 1500 volts of high voltage.

Identify deficiencies:

1, PTFE has "cold flow". It is the plastic deformation (creep) of material products under the action of continuous load for a long time, which brings certain limitations to its application. For example, when PTFE is used as a gasket, the bolt is tightly screwed for a tight seal, so that the gasket will be compressed by "cold flow" (creep) when it exceeds a certain compressive stress. These shortcomings can be overcome by adding appropriate filler and improving the structure of parts.

2. PTFE has outstanding non-viscosity, which limits its industrial application. It is an excellent anti-stick material, which makes it extremely difficult to bond with the surface of other objects.

3. The linear expansion coefficient of PTFE is 10~20 times that of steel, which is larger than most plastics. The linear expansion coefficient changes irregularly with the change of temperature. In the application of PTFE, if insufficient attention is paid to this aspect of performance, it is easy to cause losses.

Chemical properties

Atmospheric aging resistance: radiation resistance and low permeability: long-term exposure to the atmosphere, the surface and performance remain unchanged.

Noncombustibility: Oxygen limit index below 90.

Acid and alkaline resistance: insoluble in strong acids, strong bases and organic solvents (including magic acid, namely fluoroantimony sulfonic acid).

Oxidation resistance: can resist the corrosion of strong oxidant.

Acid base: neutral.