Product Overview
Description
Products Information
Everflon FEP Aqueous Dispersion
Everflon™ FEP D50 is an off-white aqueous fluorinated ethylene propylene (FEP) dispersion stabilized with a non-ionic surfactant.
It is a general-purpose dispersion that can be used to impart some the unique properties of FEP 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 adhesive.
The FEP resin in Everflon™ FEP D50 is a melt flowable thermoplastic, providing 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 D50 aqueous dispersion provides:
• Inertness to nearly all industrial chemicals and solvents
• Stability at high temperatures
• Excellent dielectric properties
• Excellent weatherability
The Properties of Everflon Fluoropolymers
Property | Unit | D50 |
Solids Content | % FEP by weight | 50 |
Melt Flow Index | g/10min | 3-10 |
Density of Dispersion | g/cm2 | 1.4 |
Surfactant based on FEP solids | % | 6 |
Average Dispersion Particle Size | um | 0.2 |
PH of Dispersion | 23 °C (74 °F) | 10 |
Gravity of Sintered Resin | 2.215 | |
Brookfield Viscosity | mPa.s | 25 |
Melting Temperature | °C | 257 |
PFOA content | Zero |
Application
•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
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 fiberglass, fiber, or
other 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
Packing & Delivery
Storage&Handing
Everflon FEP D50 must be stored under frost proof environment under optimum 5-30℃ temperature;
It should be homogenized once or twice a month by gentle rolling or stirring when storing or before using;
The below action will cause FEP dispersion demulsification:
Under 0℃ or over 40℃ temperature
Adjust viscosity by untreated water with electrolytic
Rapid mixing FEP dispersion
Add other electrolytic or water soluble additives and overload organic acid
It could adjust D50 viscosity by adding distilled water or anion surfactant
PH could be adjust by ammonium hydroxide
It should be homogenized once or twice a month by gentle rolling or stirring when storing or before using;
The below action will cause FEP dispersion demulsification:
Under 0℃ or over 40℃ temperature
Adjust viscosity by untreated water with electrolytic
Rapid mixing FEP dispersion
Add other electrolytic or water soluble additives and overload organic acid
It could adjust D50 viscosity by adding distilled water or anion surfactant
PH could be adjust by ammonium hydroxide
Package&Caution
Everflon FEP Dispersion D50 is package in 25L PE drum with 25kg(55lb) content and 1000L IBC drum with 1250kg (2750lb) content.
The properties of Everflon® FEP resins are not affected by storage time. Ambient storage conditions should be designed to avoid airborne contamination and water condensation on the resin when opening and emptying the packaging.
Everflon FEP
Everflon's FEP
Everflon® FEP is a melt-processible fluoroplastic resin available in pellet form. It is a copolymer of tetrafluoroethylene(TFE) and hexafluoropropylene(HFP), without additives, has a lower melt viscosity than PTFE and can be processed like other thermoplastic resins by the melt flow processes of extrusion, transfer, injection and compression molding. Because the bonding energy between its carbon and fluorine atoms is so high, and the molecule is completely filled with fluorine atoms, Everflon FEP fluorocarbon polymer has excellent thermal, electrical, and chemical stability.
AN EXCELLENT ELECTRICAL INSULATOR
A low dielectric constant and dissipation factor exist along with high dielectric strength over a wide range of frequencies and
temperatures.
temperatures.
LOW FRICTION
Everflon FEP offers the lowest critical surface energy of any plastic material in addition to excellent water and oil repellency for non-stick and mold release applications.
HIGH TRANSPARENCY
Products prepared from Everflon FEP are transparent with good transmittance of both ultraviolet and visible wavelengths; the lowest refractive index of any plastic and characterized by very low light reflection
TOLERANT OF HIGH TEMPERATURES
Everflon FEP offers superior reliability and retention of its properties in a wide thermal range from cryogenic to high
temperature (-200°C to +200°C).
temperature (-200°C to +200°C).
Health & FOOD SAFE
This makes it an excellent choice for applications in food manufacturing and packaging, particularly since the material is food grade compliant and resistant to staining.
CHEMICALLY RESISTANT & INERT
Everflon FEP maintains its physical properties in extreme environments. It provides excellent chemical and permeation resistance including exposure to weathering, light, and moisture.
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About Everflon Fluoropolymers
Everflon® Fluoropolymer specializes in the production, development, and sales of high-performance fluoropolymer materials. It provides the most basic fluoropolymer raw materials for C&F Group's fluorochemicals. After years of research and development and production, it is currently PTFE, FEP,PFA,ETFE and PVDF materials, and can provide a variety of physical properties of dispersions, granules and powder to meet the needs of various processing applications such as spraying, extrusion, molding, injection molding.
Relying on the Group's Quality Assurance Department and Application Laboratory, Everflon® provides the highest quality and stable fluoroplastic raw materials to meet the high quality requirements of middle and high-end customers and reduce the quality of raw materials caused by production and processing. Problems such as rising costs and inefficiency have established extensive and stable cooperative relations with main-stream manufacturers at home and abroad.
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Application of Fluoropolymers
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