FEP_FEP Introduction_FEP Brand | Merchant | Enterprise Building Materials

FEP

English trade name of fluorinated ethylene propylene copolymer (perfluoroethylene propylene copolymer): Teflon * FEP (Fluorinated ethylene propylene copolymer) FEP is the copolymerization of tetrafluoroethylene and hexafluoropropylene.

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1. FEP classification

FEP

2. Common applications of FEP

Perfluoroethylene propylene resin has similar characteristics with polytetrafluoroethylene and good processing technology of thermoplastic, so it becomes an important material to replace polytetrafluoroethylene. F-46 is widely used in the production of wires and cables for electronic equipment transmission lines used at high temperature and high frequency, connecting lines inside electronic computers, aerospace wires, and other special purpose installation lines, oil mine logging cables, submersible motor winding lines, micromotor outgoing lines, etc.

3. Development history of FEP

F-46 has good processing properties. The usual extrusion method can be used to cover the insulation layer of wires and cables. In order to correctly design the extruder and die, control and master the processing conditions of F-46 resin, it is necessary to first understand the rheological properties of F-46 resin. The relationship between shear stress and shear rate of F-46 at 390 ℃. The viscosity μ A decreases with the increase of shear rate. The critical shear rate of F-46. If the shear rate exceeds this value, the plastic flow will be uniform, resulting in rough, lusterless and delamination of the product surface. The critical shear rate of F-46 is very different from that of polyethylene and nylon, so the melting fracture problem is particularly serious.