Keywords:Perfluoroethylene propylene (FEP/F46)     PTFE/PTFE/Teflon Series     Soluble polytetrafluoroethylene (PFA)

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What material is F46 short for, what is the chemical composition, and what is the sintering process?

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2024-06-27

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What is the material abbreviation of 1. F46

F46 is a copolymer of tetrafluoroethylene and hexafluoropropylene. The content of hexafluoropropylene is about 15%, and it is a modified material of polytetrafluoroethylene. The Chinese full name of F46 is polyethylene glycol propylene, referred to as F46, English full name is Fluorinated ethylene propylene, English referred to as FEP.

Chemical composition of 2. F46

F46 is a high-end fluorinated polymer, its composition is tetrafluoroethylene and hexafluoropropylene, about 15% of hexafluoropropylene is the main component of F46 copolymer, which is characterized by its structural modification, similar to polyfluoroethylene propylene (FEP).

Similar to PTFE, F46 is also a fully fluorinated structure, but on the basis of PTFE, branches and side chains are added. This subtle difference has no significant effect on the upper limit of the temperature range under long-term stress of F46. The upper limit temperature of F46 is 200°C, while the maximum use temperature of PTFE is 260°C. However, the improvement of F46 resin structure, so that it has a clear melting point, can be used for thermoplastic processing, processing technology is greatly simplified, which is not available in PTFE.

The content of hexafluoropropylene in F46 has a certain effect on the performance of the copolymer. The hexafluoropropylene content of currently produced F46 resins is typically between 14% and 25%.

3. F46 sintering process

F46 can be divided into three kinds of pellets, dispersion and paint. Among them, according to the different melt index, the pellets can be used for molding, extrusion and injection molding; the dispersion liquid is used for impregnation and sintering; the paint is used for spraying, etc.

F46 (also called FEP) sintering process has a set of standardized operating procedures. The specific operating procedures may vary from manufacturer to manufacturer. Generally speaking, FEP resin sintering operation procedures include raw material acceptance, dusting, mixing, screening and crushing, solvent fuel crushing and screening, batching, mixing, ignition, exhaust sintering, exhaust cooling, crushing and screening, dust removal and other links.

This article is originally created by Teflon's little sister. Welcome to pay attention and take you to grow knowledge together!

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