PTFE, PFA, FEP, PVDF Fluoroplastic products industry experts
Difference between F4 and F46
Classification:
Industry dynamics
Author:
Teflon tube little sister
Source:
Teflon tube little sister
Release time:
2019-05-20
Visits:
Speaking of the difference between F4 and F46, I have to introduce what F4 and F46 are first. Then from the product itself and its functions and applications to teach you to distinguish.
First to introduce F4
Abbreviation: PTFE
Chinese name: polytetrafluoroethylene
Chinese alias: PTFE/Teflon/Teflon/Teflon/Teflon/4F/Plastic King
English name: Polytetrafluoroethylene (abbreviated as Teflon or [PTFE,F4])
There is a kind of material called polytetrafluoroethylene in chemistry. The molecular formula is (C2F4)n,F is short for fluorine in the periodic table of chemical elements. From this, it can be easily inferred that F4 is short for polytetrafluoroethylene. Star chasers should not confuse this F4 with that "F4.
F4 this material has the characteristics of acid and alkali resistance, resistance to various organic solvents, almost insoluble in all solvents, therefore, F4 insoluble sealing can not be welded.
PTFE has the characteristics of high temperature resistance, high temperature can reach 260 ℃, the friction coefficient of PTFE is very low, so for lubrication, but also become an ideal coating for easy cleaning water pipe inner layer.
F46
F-46 polyethylene glycol propylene is a kind of fluorine plastic developed to overcome the shortcomings of poor processing and molding performance of polytetrafluoroethylene.
It is a copolymer of polytetrafluoroethylene (F4) and polyhexafluoropropylene (F-6). Polytetrafluoroethylene (F4) is a synthetic polymer material that uses fluorine to replace all hydrogen atoms in polyethylene. The famous application of polytetrafluoroethylene (F4) is the exterior wall material of the Water Cube, which is used in a large area in the world.
F-46 high temperature resistance is 200 ℃, in addition to the use temperature is slightly lower than the PTFE (F4), almost all of its excellent performance. Polyfluoroethylene propylene (F-46)F-46 soluble, can be sealed, can be welded, thermal fluidity, can be used in general thermoplastic processing methods, molding, extrusion, injection molding, etc., can also be made into anti-corrosion coating.
Therefore, in the petrochemical anti-corrosion engineering, F-46 is widely used.
To sum up, F4 and F46 have two different points
1. High temperature resistance
F4 high temperature resistance 260 ℃
F46 High temperature resistance 200 ℃
2. Different solubility
F4 insoluble, non-sealable, non-weldable
F46 soluble, sealable, weldable
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