Teflon™ FFR 880
Fluoroplastic Foam Resin

Product Information
Description
Teflon™ FFR 880 fluoroplastic foam resin was developed
to meet the demand for superior micro-coaxial designs
required for manufacturing compact electronic devices.
Foamed insulation of Teflon™ FFR 880 fluoroplastic foam
resin provides high-speed data transmissions with minimal
distortion and exceptional signal return loss and attenuation
performance in ultra-thin wire and cable applications.
In addition, the resin’s high thermal stability and melt
flow rate (nominal MFR of 42) allow for high processing
speeds and excellent heat resistance. Teflon™ FFR 880
fluoroplastic foam resin offers cable designers opportunities
for miniaturization and weight savings or the use of larger
conductors to construct low-loss cables, without the needfor increased dielectric dimensions.
Teflon™ FFR 880 has been compounded with a proprietary
foam nucleating package and is supplied as white pellets.
This resin is used in a nitrogen gas-injected foam extrusion
process to produce uniform foam cells in the dielectric
insulation.
In micro-coaxial cables using Teflon™ FFR 880 fluoroplastic
foam resin, a typical cable core would have conductor sizesof 26 AWG or smaller, wall thickness of 0.002 in or greater,
with void content up to 55%. These voids are closed cell innature and range from 0.0002 in (0.006 mm) to 0.0013 in(0.033 mm) in diameter. Achievable cell size and void content
will vary based on wall thickness and processing conditions.

Safety Precautions
Before using Teflon™ FFR 880 resin, refer to the Safety
Data Sheet and the latest edition of “The Guide to the Safe
Handling of Fluoropolymer Resins,” published by The Societyof the Plastics Industry, Inc. (www.fluoropolymers.org) or by
PlasticsEurope (www.plasticseurope.org).
Open and use containers only in well-ventilated areas using
local exhaust ventilation (LEV). Vapors and fumes liberated

during hot processing of Teflon™ FFR 880 should be exhausted
completely from the work area. Contamination of tobacco withthese polymers should be avoided. Vapors and fumes liberated
during hot processing that are not properly exhausted, or fromsmoking tobacco or cigarettes contaminated with Teflon™
FFR 880, may cause flu-like symptoms, such as chills, fever,and sore throat. This may not occur until several hours after
exposure and will typically pass within about 24 hours.
Mixtures of Teflon™ fluoroplastic resin with some finely divided
metals, such as magnesium or aluminum, can be flammable or
explosive under some conditions.

Authorization
Chemours has developed proprietary technology for thecompounding and processing of these products. Some ofthis technology is protected by patents. Customers wishingto purchase and process these products should consult theirChemours sales representative with a view to obtaining alicense authorizing the purchaser to process the resin into
cable primaries of various dimensions and to sell these foamed
primaries in final cables.

Processing
Teflon™ FFR 880 fluoroplastic foam resin can be fabricated byconventional melt extrusion using similar processing techniques
as other fluoroplastics. A brief description of general processing
guidelines for Teflon™ FFR 880 fluoroplastic foam resin is given
here. More detailed processing information is available tocustomers through their Chemours sales representative andthe recommended Chemours technical bulletin, “Teflon™/Tefzel™
Melt Extrusion Guide.”
Teflon™ FFR 880 fluoroplastic foam resin is a high-flow resin
designed specifically for fine wire applications. The resin canbe fed directly to a conventional single-screw extruder withnitrogen gas injection. Molten fluoroplastic resins are corrosive
to many metals; therefore, special corrosion-resistant materials,
such as high-nickel, low-iron alloys, must be used for all parts ofextrusion equipment that come into contact with the melt.

Teflon™ FFR 880

Fluoroplastic Foam Resin

The process should include devices to monitor diameter,
capacitance, and gas flow. Color addition may affect cell
formation and capacitance, requiring process adjustment.
Insulation performance is determined by extruder output,
wire line speed, and void content. Void content is controlled
by nitrogen flow rate, process temperatures, and quench
point. It is best for the voids to grow after the melt is drawn
down onto the wire. Elongated voids in the insulation indicate
early growth of the cells in the draw-down cone. Processing
conditions will depend on the equipment used, the productbeing made, and the production rates needed. Further advice
is available through your Chemours sales representative.

Storage and Handling
The properties of Teflon™ FFR 880 fluoroplastic foam resin
are not affected by storage time. Ambient storage conditions
should be designed to avoid airborne contamination andwater condensation on the resin when it is removed fromcontainers..

Packaging
Teflon™ FFR 880 resin is supplied as pellets packaged in
25-kg (55-lb) plastic bags.

Table 1: Typical Property Data for Teflon™ FFR 880 Fluoroplastic Foam Resin
Property

Test Method1

Unit

Typical ValuePROCESSING
Melt Flow Rate (MFR at 372 °C [702 °F]/5.0 kg)

ISO 12086

D 3307g/10 min

42Melting Point—

D 4591°C (°F)305 (580)

Specific Gravity

ISO 1183

D 792—

2.14

1 kHz

IEC 250

D 150—

2.04

1 MHz

IEC 250

D 150—

2.04

1 GHz

IEC 250

D 2520

—

2.04

1 kHz

IEC 250

D 150—

0.0001

1 MHz

IEC 250

D 150—

0.0002

1 GHz

IEC 250

D 2520—0.0004

ELECTRICAL
Dielectric ConstantDissipation Factor

ASTM method unless otherwise specified

1

HOW TO USE THE TEFLON™ BRAND NAME WITH YOUR PRODUCTTeflon™ is a registered trademark of Chemours for its brand of fluoroplastic resins, coatings, films, and dispersions. The Teflon™ brand name is licensed by Chemours in association with approved
applications. Without a trademark license, customers may not identify their product with the Teflon™ brand name, as Chemours does not sell such offerings with the Teflon™ trademark. Unlicensed
customers may refer to the Chemours product offering with only the Chemours name and product code number descriptor as Chemours sells its product offerings. There are no fair use rights or
exhaustion of rights to use the Teflon™ trademark from buying from Chemours, a Chemours customer, or a distributor without a trademark license from Chemours.
If you are interested in applying for a trademark licensing agreement for the Teflon™ brand, please visit www.teflon.com/license
CAUTION: Do not use or resell Chemours™ materials in medical applications involving implantation in the human body or contact with internal body fluids or tissues unless agreed to by Seller in a writtenagreement covering such use. For further information, please contact your Chemours representative. For medical emergencies, spills, or other critical situations, call (866) 595-1473 within the UnitedStates. For those outside of the United States, call (302) 773-2000.
The information set forth herein is furnished free of charge and based on technical data that Chemours believes to be reliable. It is intended for use by persons having technical skill, at their own
discretion and risk. The handling precaution information contained herein is given with the understanding that those using it will satisfy themselves that their particular conditions of use present
no health or safety hazards. Because conditions of product use are outside our control, Chemours makes no warranties, express or implied, and assumes no liability in connection with any useof this information. As with any material, evaluation of any compound under end-use conditions prior to specification is essential. Nothing herein is to be taken as a license to operate under or arecommendation to infringe any patents.
NO PART OF THIS MATERIAL MAY BE REPRODUCED, STORED IN A RETRIEVAL SYSTEM OR TRANSMITTED IN ANY FORM OR BY ANY MEANS ELECTRONIC, MECHANICAL, PHOTOCOPYING, RECORDING OR OTHERWISEWITHOUT THE PRIOR WRITTEN PERMISSION OF CHEMOURS.

For more information, visit teflon.com/industrial
For sales and technical support contacts, visit teflon.com/industrialglobalsupport© 2020 The Chemours Company FC, LLC. Teflon™, Tefzel™ and any associated logos are trademarks or copyrights of The Chemours Company FC, LLC. Chemours™ and theChemours Logo are trademarks of The Chemours Company.
Replaces: K-26519
C-10102 (3/20)