Unique Properties Of PTFE

The unique properties of PTFE make it widely used in chemical, petroleum, textile, food, paper, medicine, electronics and machinery and other industrial and marine operations.

1. Application of anti-corrosion performance

Due to the defects in corrosion resistance of materials such as rubber, glass, and metal alloys, it is difficult to meet the environment where harsh conditions of temperature, pressure and chemical media coexist, and the resulting losses are quite astonishing. PTFE material has become the main corrosion-resistant material in petroleum, chemical, textile and other industries due to its excellent corrosion resistance. Its specific applications include: conveying pipes, exhaust pipes, steam pipes for conveying corrosive gases, high-pressure oil pipes for rolling mills, high-, medium- and low-pressure pipes for aircraft hydraulic systems and cold-pressing systems, rectification towers, heat exchangers, tanks, towers, tanks The lining, wide doors and other chemical equipment. The performance of the seal has a friction coefficient and non-stickiness, a wide temperature resistance range and good elasticity to the efficiency and performance of the entire machine and equipment, making it very suitable for manufacturing with high requirements for corrosion resistance and operating temperature higher than 100°C of seals. Such as machinery, heat exchangers, high-pressure vessels, large-diameter vessels, valves, seals of grooved flanges of pumps, glass reaction vessels, flat flanges, seals of large-diameter flanges, shafts, piston rods, valve rods, Walu pump, tie rod seals, etc.

2. Application of low friction performance in load

Because the friction part of some equipment should not be lubricated, for example, in the occasions where the lubricating grease will be dissolved by the solvent and fail, or the products in the paper, pharmaceutical, food, textile and other industrial fields need to avoid lubricating oil contamination, which makes the filled PTFE material It becomes an ideal material for oil-free lubrication (direct load bearing) of mechanical equipment parts. This is because this material has the lowest coefficient of friction of any known solid material. Its specific uses include bearings for chemical equipment, papermaking machinery, and agricultural machinery, as well as pistons, machine tool guides, and guide rings; in civil engineering, it is widely used in bridges, tunnels, steel structure roof trusses, large chemical pipelines, and storage tanks. Support sliders, as well as bridge supports and bridge swivels, etc.

3. Application in electronic and electrical

The inherent low loss and low dielectric constant of PTFE material make it possible to make enameled wire for use in micro motors, thermocouples, control devices, etc.; PTFE film is ideal for the manufacture of capacitors, radio insulating liners, insulating cables, motors and transformers Insulating materials are also one of the indispensable materials for industrial electronic components such as aerospace; oxygen sensors can be manufactured by using the selective permeability of fluoroplastic films with high permeability to oxygen and low permeability to water vapor; Microphones, speakers, parts on robots, etc. can be manufactured by utilizing the characteristics of fluoroplastics with polar charge deviation under high temperature and high pressure; optical fibers can be manufactured by utilizing their low refractive index characteristics.

4. Application in medical and pharmaceutical fields

Expanded PTFE material is pure inert, has very strong biological adaptability, will not cause rejection by the body, has no physiological side effects on the human body, can be sterilized by any method, and has a microporous structure, which can be used in a variety of rehabilitation solutions , including artificial blood vessels and patches for soft tissue regeneration and surgical sutures for vascular, cardiac, general and orthopaedic surgery.

5. Application of anti-stick properties

PTFE material has the smallest surface tension among solid materials, does not adhere to any substance, and also has excellent high and low temperature resistance, which makes it widely used in anti-stick applications such as the manufacture of non-stick pans. Its anti-sticking process mainly includes two kinds: installing PTFE parts or sheets on the substrate, and wrapping the PTFE coating or varnished cloth with glass on the substrate through heat shrinkage.