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:
Elong. At rupture/%
Ulimate Temperature of Continuous Operation℃
Excellent chemical and solvent resistance
Limiting Oxygen Index/%
The product appearance: