PTFE, PFA, FEP, PVDF Fluoroplastic products industry experts
Characteristics of ptfe film and the use of ptfe
Classification:
Industry dynamics
Author:
FEP tube little sister
Source:
FEP tube little sister
Release time:
2009-03-17
Visits:
Polytetrafluoroethylene (Polytetrafluoroethene), commonly known as "non-stick coating" or "easy-to-clean material", is a synthetic polymer material that uses fluorine to replace all the hydrogen atoms in polyethylene. This material has the characteristics of acid and alkali resistance, resistance to various organic solvents, and is almost insoluble in all solvents. At the same time, PTFE has the characteristics of high temperature resistance, and its coefficient of friction is very low, so it can be used for lubrication, and it has also become an ideal coating for the inner layer of easy-to-clean wok and water pipe.
The film is made of suspended PTFE resin by molding, sintering, cooling into a blank, and then turning, calendering. The film turned into a non-oriented film, and the non-oriented film is calendered into an oriented film. The unoriented film was calendered 1.1-1.8 times to the semi-oriented film. PTFE film is used for capacitor medium, wire insulation, electrical instrument insulation, sealing gasket. PTFE film is divided into PTFE color film, PTFE activation film and F46 film.
Figure 1 PTFE film source: Teflon tube little sister
PTFE film performance characteristics
1. high temperature: the use of working temperature of 250 ℃.
2. Low temperature resistance: good mechanical toughness; even if the temperature drops to -196 ℃, it can maintain an elongation of 5%.
3. Corrosion resistance: For most chemicals and solvents, it is inert, resistant to strong acids and alkalis, water and various organic solvents.
4. Weather resistance: the best aging life in plastics.
5. High lubrication: the lowest coefficient of friction in solid materials.
6. non adhesion: is the smallest surface tension in solid materials, does not adhere to any substance.
7. non-toxic: with physiological inertia, as artificial blood vessels and organs long-term implantation in the body without adverse reactions.
8. Electrical insulation: can resist 1500 volts high voltage.
The unique properties of polytetrafluoroethylene (PTFE) make it widely used in chemical, petroleum, textile, food, paper, medicine, electronics and machinery and other industrial and marine operations. For example:
1. Application in electrical and electronic
The inherent low loss and small dielectric constant of polytetrafluoroethylene film (PTFE) material enable it to be made into enameled wires for micro-motors, thermocouples, control devices, capacitors, radio insulation pads, insulated cables, motors and transformers, etc. Using the characteristics of fluorine plastics that cause polar charge deviation under high temperature and high pressure, microphones, speakers, robot parts, etc. can be manufactured. Using its low refractive index characteristics, optical fibers can be manufactured.
Figure 2 Optical fiber source: network
2. Application of anti-corrosion performance
Polytetrafluoroethylene film (PTFE) material has become the main corrosion resistant material in petroleum, chemical, textile and other industries because of its excellent corrosion resistance. Its specific applications include: conveying pipes, exhaust pipes, steam pipes for conveying corrosive gases, high-pressure oil pipes for steel rolling mills, Senior high school and low-pressure pipes for hydraulic systems and cold-pressure systems, rectification towers, heat exchangers, kettles, towers, and tanks Lining, valves and other chemical equipment.
3. Application of low friction performance in load
Because the coefficient of friction of the PTFE film is the lowest among the known solid materials. Its specific uses include bearings for chemical equipment, papermaking machinery, agricultural machinery, used as piston rings, machine tool guide rails, guide rings; in civil construction engineering is widely used as a bridge, tunnel, steel roof truss, large chemical pipelines, storage tank support slider, and used as a bridge support and bridge swivel.
4. Application in Medical and Pharmaceutical
The expanded polytetrafluoroethylene membrane (PTFE) material is purely inert, has very strong biocompatibility, does not cause body rejection, 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 blood vessels, heart, general surgery and orthopedics.
5. Application of anti-sticking performance
Polytetrafluoroethylene film (PTFE) material has the smallest surface tension in solid materials, does not adhere to any substance, and also has excellent characteristics of high and low temperature resistance, so that it has a wide range of applications such as non-stick pan anti-sticking. 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 shortcomings of polytetrafluoroethylene film (PTFE) material: cold flow, difficult to weld, difficult to melt processability are gradually being overcome, so that it is in optics, electronics, medicine, petrochemical oil anti-seepage and other fields of application prospects more broad.
Shenzhen Dankai Technology Co., Ltd. (ShenZhen DanKai Technology Co., Ltd.), whose predecessor was the Fluoroplastic Material Factory of Dongguan Dandi Insulation Material Co., Ltd. established in 1998, specializes in the research and development, production and sales of FEP, PFA, PTFE and other fluoroplastic tube rod sheet membrane products and other insulation materials. The company has international standards of senior R & D team and the introduction of foreign fluorine plastic products production line. Some fluoroplastic products through ISO9001, SGS, FDA certification, Huawei, Foxconn, the United States, ZTE, Intel, AirTAC and other domestic and foreign cooperation customers fully affirmed. The company's main products are: ① pipes: Ptfe pipes, Fep pipes, Pfa pipes, Pvdf pipes; ② Heat shrinkable tubes: Ptfe heat shrinkable tubes, Fep heat shrinkable tubes, Pfa heat shrinkable tubes, Pvdf heat shrinkable tubes; ③ Plate rod film: Ptfe plate rod film, Feep plate rod film, Pfa plate rod film, Pvdf plate rod film, etc. PE: PE, special, spiral tube, spring tube, rotary cutting tube, welding rod, tee, straight, gasket, joint, cone rod, flared tube, sealing tube, braided tube, corrugated tube, etc. At the same time can be customized according to customer requirements processing production of various specifications of fluorine plastic products.
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