Fluoroplastic FEP D50 Aqueous Dispersion

Get to Know FEP D50

Everflon™ FEP Dispersion D50 is an off-white aqueous fluorinated eth-ylene propylene (FEP) dispersion sta-bilized with a non-ionic surfactant. It is a general-purpose dispersion that can be used to impart some of the unique properties of PFA to end prod-ucts that would be difficult to make using traditional melt extrusion pro-cesses. It can be used to coat or im-pregnate porous structures or to make thin films. It can be coated and melt bonded to polytetrafluoroeth-ylene (PTFE) resin or used as a hot melt adhesive.

The FEP resin in Everflon™ FEP D50 is a melt flowable thermoplastic, provid-ing superior properties typical of fluoroplastic resins: retention of properties after service at 204 °C (400 °F) and useful properties at –240 °C (–400 °F).

Everflon™ FEP Dispersion D50 aqueous dispersion provides:

• Inertness to nearly all industrial chemicals and solvents

• Stability at high temperatures

• Excellent dielectric properties

•Excellent weatherability

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

Processing Guide

Conventional dip or flow techniques can be used for coating or impregnating high temperature fabrics, fibers, and other products with Everflon™ FEP D50. A FEP resin coating on woven fabrics made of high-temperature resistant fibers, can be made by dip coating. Successive passes may be necessary to build the desired thickness to produce a smooth, crack-free coating. Each coating layer is usually dried to remove water (typically at 120 °C [250 °F]), baked to remove the wetting agent (typically at 270 °C [518 °F]), and then heated above the crystalline melting point of the resin particles (approximately 265 °C [509 °F]). If the Everflon® FEP D50 is being used as a top coat over a PTFE-coated fabric or other parts, the coating must be heated to melt the PTFE (approximately 337 °C [639 °F]) to maximize adhesion.

Other solid or liquid ingredients can be added to Everflon™ FEP D50 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.

Data List

Property	Test Method	Unit	Typical Value
GENERAL
Particle Size	ASTM D4441	μm	0.25
Solids Content	ASTM D4441	%	50
pH of Dispersion	ASTM D4441		9
Brookfield Viscosity	ASTM D2196	Mpa.s	15~30
Melt Flow Rate	ASTM D2116	g/10 min 5kg	8~12
Melting Point	ASTM D2116	°C	260