description pfa

 Fluoropolymeres

   
Flouropolymer-products
 vessels, pipes, hoses, armatures etc., which are manufactured in PFA-lined or in solid PFA have the following advantages:
   
Flouropolymer-products 

are resistant against:

  • Nitric Acid
  • Chemical Processing
  • Aniline
  • MECI
  • Pharmaceutical
  • Epichlorohydrin
  • Oleum
  • Nitrobenzene
  • Ethylene Oxide
   
Flouropolymer-products Guarantee full corrosion protection against all above chemical substances
- even under extreme thermal conditions from -200°C - +260°C
   
   
   
 

Physical properties from Perfluoralkoxy – Copolymer (PFA)

 

 

 

 

 

Density                                              g/cm³

2,1 -2,2

 

Surface resistivity                              Ω

>1017

Continuous use temperature             °C

-200– +260

 

Dissipation factor at 50/106 Hz   
10-4

<1-2

Short time use temperature               °C

+ 280

 

Dielectric strength                    KV/mm

20

Stress at yield                                    MPa

21

 

Water absorption                               %

< 0,1

Elongation at break
%

> 300

 

Friction constant

 

Hardness (Shore D)

60

 

PTFE-PTFE (dry)

0,09 - 0,19

Linear thermal expansion             10-6/K

130-200

 

PTFE-PTFE (greased)

0,04 - 0,07

Thermal conductance                 
W/K m

0,22

 

PTFE-Steel (dry)

0,07 - 0,11

Dielectric constant at 50 / 106 Hz

2,0 - 2,1

 

PTFE-Steel (greased)

0,02 - 0,06

Volume resistivity                               Ω m

>1016

 

Weather-worn after 3 Years

n. a.