PTFE, PFA, FEP, PVDF Fluoroplastic products industry experts
PFA and PTFE are the most common fluoropolymers, what is the difference between them?
Classification:
Industry dynamics
Author:
Dankai
Source:
Dankai
Release time:
2021-12-07
Visits:
1. what is PFA?
PFA is an abbreviation of perfluoroalkoxy. PFA has a low friction coefficient and therefore has excellent non-stick characteristics. It is a fairly soft polymer, has a high resistance to stress cracking, and can resist almost all solvents and chemicals. PFA is also able to withstand high and low temperature conditions. It is capable of providing continuous use temperatures up to 260°C(500 °F). PFA has excellent flame retardancy, chemical stability and high dielectric strength.
PFA piping is used in a variety of applications involving critical, highly corrosive processes. PFA lining materials can protect chemical equipment from corrosion. Other applications include filter housings, heat exchangers, pump housings, accessories, etc. Process Technology utilized PFA in the construction of PIA series chemical heaters, Pulsar point of use (POU) series heaters, XC series series exchangers, and X series. Immersion coil.
Figure 1:PFA tube Source: Dankai
2. what is Teflon?
PTFE (polytetrafluoroethylene) is the most popular form of Teflon and a synthetic fluoropolymer of tetrafluoroethylene. Other names for PTFE are Fluon and Syncolon. In 1938, Roy Plunkett of DuPont accidentally discovered PTFE and tried to make a non-flammable and non-toxic refrigerator coolant. It is a high molecular weight compound composed of carbon and fluorine (a fluorocarbon solid). PTFE is hydrophobic-no, it is not afraid of water-and will not get wet with water or any substance containing water. The high electronegativity of fluorine gives PTFE a very low coefficient of friction in contact with solids, giving PTFE what is known as "slip". Other properties of PTFE include high chemical resistance, low and high temperature performance,
PTFE has many applications, such as non-stick coatings for pans and cookware. Its non-reactive nature makes it ideal for lining pipes, vessels and tanks containing corrosive and reactive chemicals. PTFE is a special lubricant that can reduce energy consumption and reduce energy consumption when used in machinery, and reduce wear. Process Technology utilize PTFE in the construction of TIH and SHC online chemical heaters as well as Lufran ultrapure water heaters, HX series immersion heaters, X series immersion coils and LTFH high temperature filter housings.
Figure 2: Teflon tube Source: Dankai
3. where is the difference?
There are some significant performance differences between these two fluoropolymers to consider when choosing the right fluoropolymer for your process. The difference in alkoxy substituents allows PFA to be melt-processed by regular injection molding and screw extrusion techniques, whereas PTFE cannot. PFA is more flexible, but has a lower flex life, so it cannot withstand repeated folding. The heat resistance of PTFE is slightly higher, but it lacks in comparison with fluidity, creep resistance and thermal stability. The melting points of PFA and PTFE are 260°C and 327°C, respectively. Although PFA has better salt spray resistance, water absorption and weather resistance have a greater impact on PFA than PTFE. Finally, the most significant difference between the two is that the dielectric strength of PFA is 3-4 times that of PTFE.
Shenzhen Dan Kai Technology Co., Ltd., specializing in FEP, PFA, PTFE, PVDF and other fluorine plastic tube rod sheet membrane products and other insulation materials research and development, production, sales and service of intelligent manufacturing enterprises.
ShenZhen DanKai Technology Co.,ltd. is an intelligent manufacturing enterprise specializing in the R & D, production, sales and service of FEP, PFA, PTFE,PVDF and other fluoroplastic tube, bar, sheet and film products as well as other insulating materials.
The company has international standards of senior R & D team and the introduction of foreign fluoroplastic products production line, some fluoroplastic products through ISO9001, SGS, FDA certification.
The main products are: ① Pipe type: Ptfe PTFE pipe, Fep pipe, Pfa pipe, Pvdf pipe; ② Heat shrinkable tube type: Ptfe heat shrinkable tube, Fep heat shrinkable tube, Pfa heat shrinkable tube, Pvdf heat shrinkable tube; ③ Plate rod film: Ptfe plate rod film, Feep plate rod film, Pfa plate rod film, Pvdf plate joint film, etc. ⑤, 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.
This article is originally created by Teflon's little sister. Welcome to pay attention and take you to grow knowledge together!
Key words:
Most often, pfa,ptfe, with, heat shrink tube, heater, pvdf,fep, other, series
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