Everflon™ Fluoropolymers
Aqueous Dispersion
 Description
Everflon™ PFA Dispersion D450 is an
off-white aqueous perfluoroalkoxy
(PFA) dispersion stabilized with a
non-ionic surfactant. It is a gener-
al-purpose dispersion that can be
used to impart some of the unique
properties of PFA to end products
that would be difficult to make using
traditional melt extrusion processes. It
can be used to coat or impregnate
porous structures or to make thin
films. It can be coated and melt
bonded to polytetrafluoroethylene
(PTFE) resin or used as a hot melt ad-
hesive.

The PFA resin in Everflon™ PFA D450

is a melt flowable thermoplastic, pro-
viding superior properties typical of
fluoroplastic resins: retention of prop-
erties after service at 260 °C (500 °F) and useful properties at –240 °C (–400 °F).

Everflon™ PFA Dispersion D450 aqueous dispersion provides:

• Inertness to nearly all industrial chemicals and solvents

• Stability at high temperatures

• Excellent dielectric properties

• Excellent weatherability

• Excellent anti-stick properties

 data list

Typical Property Data for Everflon™ FEP D50

Particle Size Solids Content

ASTM D4441 ASTM D4441

0.25 μm
50 Mpa
%

pH of Dispersion Brookfield Viscosity

ASTM D4441 ASTM D2196

9 15~30 °C
Mpa.s

Melt Flow Rate Melting Point

ASTM D3307 ASTM D3307

8~12
g/10 min 5kg
310 °C

°C

Typical Applications
•Heat-sealable top coatings for PTFE-coated fabrics for belting, circuit boards, architectural fabrics, and electrical
insulation

•Cast film for capacitor dielectrics or chemical barriers

•Hot melt adhesive for PTFE, PFA, and FEP parts

•Metal coatings
 Packaging
Everflon™ PFA Dispersion is packaged in 25L PE drum with 20kg (44lb) content and 1000L IBC drum
with 1250kg (2750lb) content.

Processing Guide
Conventional coating techniques, such as dip, spray, spin, or roller coating, can be used for coating or
impregnating high temperature materials with Everflon™ PFA D450. Thin coats, usually less than 5 μm
(0.2 mil), are applied to prevent mud cracking as the coating dries. The water is normally removed at 120
°C [250 °F], followed by heating to remove the wetting agent (typically at 250–270 °C [482–518 °F]). Final
consolidation is done above the 305 °C (581 °F) melt point. If the Everflon™ PFA D450 is being used as a
top coat over a PTFE coated fabric or other parts, the coating must be heated to melt the PTFE (approxi-
mately 337 °C [639 °F]) to maximize adhesion. Prolonged heating above 370 °C (698 °F) should be
avoided, as this could lead to thermal degradation of the Everflon™ PFA D450 polymer.
Other solid or liquid ingredients can be added to Everflon™ PFA D450 to provide specific processing or
finished product behavior.
The details please visit www.everflon.com or refer Everflon Fluoropolymer Dispersions Application
Guide.

Precaution
Equipment used to process at melt temperatures should be provided with local exhaust ventilation (LEV) to com-
pletely remove all fumes and vapors from the processing area. In addition, care should be exercised to avoid the
contamination of cigarettes and other forms of smoking tobacco when using fluoroplastic resins. Before process-
ing any fluoroplastics, read the Material Safety Data Sheet.
 Storage and Handling
Ammonium hydroxide is used by Everflon™ to set the pH to 9.5–11.0 at the time of shipment. High ambient tem-
peratures can deplete the ammonium hydroxide level and reduce pH.

Declining pH eventually favors bacterial growth, which causes odor and scum. The pH of opened containers
should be measured and maintained between 9.5 and 11.0.

High-speed stirring, pumping, or any other violent agitation must be avoided to minimize sheared particles,
coagulation, and foaming. Ideally, the dispersion should be conveyed by gravity from storage to processing
stations.

Everflon™ PFA D450 must be properly stored to maximize the stability of the dispersion. The PFA particles will
settle on prolonged standing and/or on prolonged heating— temperatures above 40 °C (104 °F) should be avoid-
ed.

The dispersion must be protected from freezing, which will cause irreversible settling. The optimum storage tem-
perature range is 7–24 °C (45–75 °F). If dispersions are to be stored for extended periods, lower-temperature stor-
age is desirable.

For optimal performance, Everflon™ PFA D450 should be gently mixed or rolled monthly and prior to use.

Storage and handling areas should be clean.Keep dispersiondrums closed and clean to avoid both contamination
and coagulation by drying at the liquid surface. High processing temperatures will cause even very small foreign
particles to become visible and/or to make defects in finished products.Good housekeeping and careful handling
are essential.
 About C&F and
Everflon
Fluoropolymers
Everflon™ is brand of C&F Group dealing in fluoropolymers
materials including PTFE.FEP.PFA.ETFE and PVDF. On the basis of
Everflon, C&F also developing the fluoropolymer applications includ-
ing tubing,coating and films.

More information could visit www.everflon.com or Everflon™ Fluoropolymers

Introduction and C&F Chemicals Book

For more information, visit www.everflon.com

For sales and technical support contact, please contact
info@everfloncom

Everflon Fluoropolymer co.,ltd

Fuqiao Industrial Park,C&F Ave,Chaidian,Wuhan, China. 43100
Tel:+86-185-7168-9228