PTFE&PFA&FEP

PTFE & FEP & PFA

Compare with PTFE:


PTFE and PFA

 

The PFA main chain structure is close to PTFE, and the side chain   structure increases the flexibility of the polymer chain after the   introduction of perfluoroalkyl vinyl ether. While PFA maintains the excellent   physical and chemical properties of PTFE, the cold fluidity of the resin is   also improved, the melt index is reduced, and melt processing is possible.   

 

PTFE and FEP

 

FEP is a modified material of PTFE, which has very similar   characteristics to PTFE and has good processing properties of thermoplastics.   FEP makes up for the shortcomings of PTFE processing difficulties and can be   melt processed. 

 

 

FEP and PFA

The proportion of comonomer in PFA resin is very small, so its melting   point is higher than that of FEP (265 ± 10 ℃), and it needs to exceed 300 ℃   to melt. The physical and mechanical properties of PFA and FEP are relatively   close, but the difference between the two is greater after increasing the   temperature. The cable with PFA material as the insulating layer has a higher   continuous service temperature and more excellent stress cracking resistance.

 


Comparison of main parameters:


PTFE

PFA

FEP

ETFE

Relative Density

2.132.2

2.122.17

2.122.17

1.74

Tensile Strength/Mpa

1448

2432

1635

4247

Elong. At rupture/%

200450

280400

250330

420460

Melting Point/℃

327±5

305±5

265±10

267±5

Ulimate Temperature of Continuous   Operation℃

260

260

200

150

Dissipation Factor

2.1

2.1

2.1

2.6

Excellent chemical and solvent   resistance

excellent

excellent

excellent

excellent

Limiting Oxygen Index/%


95

95

95

31


The product appearance:

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