ETFE 4020

Get to know Everflon™ ETFE 4020.

Everflon™ ETFE 4020 is a special-purpose fluoroplastic resin available in translucent, 2.5-mm (0.1-in) pellets. Compared with other grades of Everflon™ , it has a higher flow rate and still maintains a service temperature of 150 °C (302 °F).

Everflon™ ETFE 4020 and the other Everflon™ fluoroplastics are melt processible, modified copolymers of ethylene and tetrafluoroethylene. They are high-performance resins that can be processed at relatively high rates compared with fluorocarbon resins. They are mechanically tough and offer an excellent balance of properties.

The relatively high flow rate of Everflon™ ETFE 4020 makes it uniquely suitable for high-speed processing, especially for extruded coatings and injection molding of slender, thin-walled, or intricate shapes. Properly processed products made from neat Everflon™ ETFE 4020 are inert to most solvents and chemicals, hydrolytically stable, and weather-resistant.

Recommended upper service temperature is 150 °C (302 °F); useful properties are retained at cryogenic ranges. The level and stability of dielectric properties are excellent, and the flame rating is V-0 by the UL94 method. Mechanical properties include outstanding impact strength, cut-through, and abrasion resistance. Statements, or data, regarding behavior in a flame situation are not intended to reflect hazards presented by this or any other material when under actual fire conditions.

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Data List

Typical Property Data for Everflon™ ETFE 4020 Fluoroplastic Resin

General Property Data for Everflon™ ETFE 4020

Properties	Test Method&Unit	Typical Value
Specific Gravity	ASTM D792	1.7
Impact Strength, 23 °C (73 °F)	ASTM D256/J/m (ft·lb/in)	No Break
Flexural Modulus	ASTM D790/ MPa (psi) 23 °C (73 °F)	1,200 (170,000)
Hardness Durometer	ASTM D2240	D72
Dielectric Strength, Short Time, 0.25 mm (0.010 in)	ASTM D149 kV/mm	>70
Dielectric Constant, 1 MHz (10⁶Hz)	ASTM D150	2.5
Dissipation Factor, 1 MHz (10⁶Hz)	ASTM D150	<0.0072
Volume Resistivity	ASTM D257 / ohm·cm	10¹⁷
Water Absorption, 24 hr	ASTM D570 %	<0.03
Weather and Chemical Resistance		Excellent
Limiting Oxygen Index	ASTM D2863 %	> 30%
Continuous Service Temperature	°C (°F)	150 (302)
Flammability Classification	UL 94	V-0

Typical Applications

Everflon™ETFE 4020 is ideal for many end products, including electrical components, such as sleeving, coil forms, sockets, connectors, and switches; lab ware, such as tubing,valves, containers, and fasteners; battery or instrument components that require chemical inertness; and mechanical parts. The high melt flow rate of this product

makes it ideal for injection molding and thin wall extrusion.

Processing Guide

Everflon™ ETFE 4020 can be processed by conventional, melt-extrusion techniques and injection, compression, transfer, and blow molding processes. Compared with other grades of Everflon™ ETFE, Everflon™ ETFE 4020 provides intermediate processing rates. . Also, the melt viscosity of Everflon™ ETFE is reduced with increasing shear rate; thus, permitting the use of pressure extrusions through narrow dies without requiring appreciable drawdown. Reciprocating screw injection molding machines are preferred. Corrosion-resistant metals are recommended for contact with molten resin. Extruder barrels should be long, relative to diameter, to provide residence time for heating the resin to approximately 340 °C (640 °F).

Precaution

Equipment used to process at melt temperatures should be provided with local exhaust ventilation (LEV) to completely 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 processing any fluoroplastics, read the Material Safety Data Sheet.