whiteline PFA
 

Rivestimenti in fluoropolimero PFA conto terzi

PerFluoroAlkoxy alkanes (PFA) is a fluoropolymer. It is produced by copolymerization of tetraefluoroethylene (C2F4) and perfluoroethers (CF2F3ORf). In terms of its properties, this polymer is similar to polytetrafluoroethylene (PTFE). The big difference is that the alkoxy substituents allow the polymer to be melt-processed.
PFA is melt-processable by conventional thermoplastic processing methods, including injection, transfer, blow, and compression molding and by extrusion.
It is a relatively soft thermoplastic with lower tensile strength and creep resistance than many other engineering plastics. It is chemically inert and has a low dielectric constant over a wide frequency range.

PFA is used when extended service is required in hostile environments involving chemical, thermal, and mechanical stress. PFA offers high melt strength, stability at high processing temperatures, excellent crack and stress resistance, a low coefficient of friction.
It has high resistance to creep and retention of properties after service at 260°C (500°F). PFA also meets FDA 21CFR.177.1550.

PFA has high transparency (with good transmittance of UltraViolet and visible wavelengths.) It has long term weatherability and excellent resistance to ozone, sunlight and weather.
Important applications are linings for pipe and chemical processing equipment, roll covers, and several wire and cable applications, including aircraft wire, plenum cable, fire alarm cable, and well logging cable.

PFA – Perfluoroalkoxy - TYPICAL PROPERTIES

Property Value Units Method
MECHANICAL PROPERTIES
Tensile Strength, 73°F 4060 - 4500
28 to 31
psi
MPa
 
Elongation, 73°F 260 - 300 %  
Flexural Strength, 73°F No break at flexure   D 790
Impact Strength, Izod No break    
Compressive Stress at 1% deformation, MPa   D 695
Yield Strength
At 23 deg C
1740
12
psi
MPa
 
Density (as polymerized) 2.12 to 2.17 gm/cu.cm  
THERMAL PROPERTIES
Coefficient of Linear Expansion
20 to 100 deg C
12 x 10-5 K-1  
Melting Point 487 - 540
253 - 282
deg F
deg C
 
Thermal Conductivity 1.450.209 Btu/hr-.ft-deg F
W/m/deg K
ASTM C 177
Specific Heat 0.25
1.047
Btu/lb/deg F
kJ/Kg/deg K
 
Heat Distortion Temperature,
66 lb/sq.in (0.455 MPa)
158 to 171
70 - 77
deg F
deg C
D 648
Service Temperature -418 to 403
-250 to 206
deg F
deg C
 
Processing Temperature 698 - 743
370 - 395
deg F
deg C
 
ELECTRICAL PROPERTIES
Dielectric Strength,
short time, 0.080”
  MV m-1  
Surface Arc-Resistance >300 (does not track) sec D 495
Volume Resistivity, dry, @ 50% RH >1018 ohm-cm D 257
Surface Resistivity, @ 100% RH 1016 ohm/sq.  
Dielectric Constant 1kHz to 1GHz 2.06 ? D150-81
Dielectric Strength 78.8* kV mm-1 D149
Dissipation Factor @ 60 Hz - 1 MHz <0.0001   D150-81
OTHER PROPERTIES
Refractive Index 1.344 nD 25 D 542
Water Absorption <0.1 % D570-81
Flame Rating+ VE-0   UL-94
Limiting Oxygen Index 95 % Oxygen D 2863
Resistance to Weathering Excellent    
Specific Gravity 2.12-2.17   D792-66 (1979)
Static coefficient of friction 0.05-0.08    
CO2 Permeability 273 Ng cm m-2 s-1  
O2 Permeability 637 Ng cm m-2 s-1  
N2 Permeability 91 Ng cm m-2 s-1  
intro pfa

How "diflon.it" uses cookies

"DIflon.it" and services of third parties, use both own cookies and third parties cookies for statistics and monitoring services

This website uses Google Analytics, statistics and analysis service powered by Google.

Google Analytics uses "cookies", http://en.wikipedia.org/wiki/HTTP_cookie.

The information generated by the cookie for use of this website will be transmitted to and stored at Google's servers in United States.

Google will use this information for the purpose of evaluating your use of the website, compiling reports on site activities and provide other services about the activities of the website and internet usage.

Also, Google can transfer this information to third parties where this is required by law, or where such third parties process the information to account for Google.

Google will not associate your IP address to another data owned by Google.

In the website cookies are alson used to ensure the proper service and operation.

You may refuse the use cookies by selecting the appropriate settings on your browser or visiting the Google's page dedicated to turn these functions off, but please note that if you do this you may not be able to use all the features of this web site.

By using this website, you consent to the processing of your data by Google in the way and mode described above.

In che modo "diflon.it" utilizza i cookie

"Diflon.it" e servizi di terzi, utilizzano sia cookie proprietari sia cookie di terze per l’utilizzo di servizi pubblicitari e servizi di statistica/monitoraggio.

Questo sito web utilizza Google Analytics, servizio di statistica ed analisi fornito da Google.

Google Analytics utilizza dei “cookies”, http://it.wikipedia.org/wiki/Cookie.

Le informazioni generate dal cookie sull’utilizzo del sito web verranno trasmesse e depositate presso i server di Google negli Stati Uniti.

Google utilizzerà queste informazioni allo scopo di esaminare il Vostro utilizzo del sito web, compilare report sulle attività del sito per gli operatori dello stesso e fornire altri servizi relativi alle attività del sito web e all’utilizzo di internet.

Google può anche trasferire queste informazioni a terzi ove ciò sia imposto dalla legge o laddove tali terzi trattino le suddette informazioni per conto di Google.

Google non assocerà il vostro indirizzo IP a nessun altro dato posseduto da Google.

Nel sito web vengono inoltre utilizzati i cookie per garantire il corretto funzionamento.

Potete rifiutarvi di usare i cookies selezionando l’impostazione appropriata sul vostro browser o visitando la pagina Google dedicata alle funzioni di disattivazione attualmente disponibili, ma si prega di notare che se si fa questo non si può essere in grado di utilizzare tutte le funzionalità di questo sito web.

Utilizzando il presente sito web, voi acconsentite al trattamento dei Vostri dati da parte di Google per le modalità ed i fini sopraindicati.