PTFE, PFA, FEP, PVDF Fluoroplastic products industry experts
Processing and Application of PTFE
Classification:
Industry dynamics
Author:
PFA tube little sister
Source:
Dankai
Release time:
2022-11-14
Visits:
As an industrial product, polytetrafluoroethylene (PTFE) has been developed for more than half a century. At present, the markets of developed countries at home and abroad are quite mature, and most of the uses have been widely used.
What are the main application areas and uses of PTFE products?
Figure 1: PTFE Application Source: Dankai
Since the 1960 s, China has applied PTFE in the military field, and has developed PTFE molding, push extrusion, plunger extrusion and other molding technologies, surface treatment, welding, spraying and
Impregnation and other technologies. Then let's understand the classification of PTFE according to the processing technology of products.
Figure 2: PTFE rod Source: Dankai
PTFE molded products: tubes, plates, rods, gaskets, gaskets, seals
Plunger extrusion products: rods, tubes, profiles
Push extrusion products: rods, tubes, wires, raw tape, expanded products, filter products
Turning products: sheet, film, parts
Filling products: seals, piston rings, machine tool guides
Impregnated products: packing, impregnated cloth, mesh cloth
Automatic molded products: gaskets, washers, rings, ball valve seat industrial parts and other products without post-processing
Figure 3: PTFE rod Source: Dankai
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 PTFE anti-corrosion performance
Due to the defects of rubber, glass, metal alloy and other materials in corrosion resistance, it is difficult to meet the harsh conditions of temperature, pressure and chemical medium coexistence environment, the resulting loss is quite amazing.
The PTFE material with its excellent corrosion resistance, has become the main corrosion resistant materials in petroleum, chemical, textile and other industries. Its specific applications include: conveying pipes for conveying corrosive gases, exhaust
Pipe, steam pipe, high-pressure oil pipe of rolling mill, Senior high school low-pressure pipe of aircraft hydraulic system and cold pressure system, rectifying tower, heat exchanger, lining of kettle, tower and tank, valve and other chemical equipment.
The performance of the seal has a great influence on the efficiency and performance of the whole machine equipment. PTFE material has corrosion resistance, aging resistance, low friction coefficient and non-stick, wide temperature range, good elasticity.
The characteristics of the seal make it very suitable for manufacturing seals with high corrosion resistance requirements and the use temperature is higher than 100 ℃. Such as machine, heat exchanger, high pressure vessel, large diameter vessel, valve, pump groove method
Blue seals, glass reaction pot, flat flange, large diameter flange seals, shaft, piston rod, valve rod, worm pump, pull rod seals and so on.
Figure 4: PTFE rod Source: Dankai
2. Application of PTFE low friction performance in load
Because the friction part of some equipment is not suitable for lubrication, such as in the lubricating grease will be dissolved by the solvent and failure of the occasion or paper, pharmaceutical, food, textile and other industrial products need to avoid wetting.
Oil contamination, which makes the filled PTFE material become the most ideal material for oil-free lubrication (direct load bearing) of mechanical equipment parts. This is because the friction coefficient of this material is the lowest known solid material.
of. Its specific uses include bearings for chemical equipment, paper machinery, agricultural machinery, used as piston rings, machine tool guides, guide rings; widely used in civil engineering as bridges, tunnels, steel knots
Roof truss, large chemical pipelines, storage tank support slide, as well as used as a bridge support and bridge swivel.
3. Application of PTFE in electrical and electronic
The inherent low loss and small dielectric constant of PTFE material make it possible to make enameled wire for micro-motors, thermocouples, control devices, etc.
The ideal insulation material for edge cables, motors and transformers is also one of the indispensable materials for industrial electronic components such as aerospace;
This kind of selective permeability with small overperformance can make oxygen sensors; using the characteristics of fluoroplastics that have polar charge deviation under high temperature and high pressure, it can make microphones, speakers, and robots.
Parts, etc.; the use of its low refractive index characteristics, can be made of optical fibers.
4. Application of PTFE in medical and pharmaceutical fields
Expanded PTFE material is pure inert, has a very strong biological adaptability, will not cause the body's rejection, no physiological side effects on the human body, can be disinfected by any method, and has a microporous structure, from
It 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 orthopedic surgery.
5. Application of PTFE anti-sticking performance
PTFE material has the smallest surface tension in solid materials, does not adhere to any substances, and also has excellent characteristics of high and low temperature resistance, so that it can be used in non-stick applications such as non-stick pan
Often extensive. The anti-sticking process mainly includes two kinds: the PTFE parts or sheets are installed on the substrate, and the PTFE coating or the lacquer cloth combined with the glass is shrunk on the substrate.
With the continuous development of material application technology, the three major shortcomings of PTFE materials: cold flow, difficult to weld, difficult to melt processing is gradually being overcome, so that it is widely used in optics, electronics, medicine, petroleum
Chemical oil seepage control and other fields of application prospects more broad.
shenzhen dankai technology co., ltd. is a professional ptfe products company, specializing in the production of ptfe sheet, bar, pipe, film, custom pieces, etc., we sincerely welcome new and old customers to visit hui
Gu, seek common development!
This article is originally created by Teflon's little sister. Welcome to pay attention and take you to grow knowledge together!
Key words:
Ptfe, materials, products, ptfe, applications, seals, chemical, petroleum, aerospace
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