Tefzel™ ETFE HT-2195
Fluoroplastic Resin

Product Information
Description

Typical End Products

Tefzel ETFE HT-2195 is a premium-grade fluoroplastic
resin designed for use in rotational molding. To beeffective as a rotational molding resin, Tefzel™ ETFE
HT-2195 is a free-flowing powder with controlled particle
size, shape, and size distribution.

Tefzel™ ETFE HT-2195 is ideal for many end products for
fluid handling in chemical processing industries, including
pump housings, vessels, columns, elbows, tees, and pipe
sections with unusual shapes. In addition, any hollow
structure with internal contours that permits uniform
coating by powder flow is a candidate for lining, provided it
can withstand high temperatures.

™

The properties of Tefzel™ ETFE HT- 2195 in molded form
are similar to other grades of Tefzel™ fluoroplastic resin.
Table 1 shows typical property data for Tefzel™ ETFEHT-2195.
Rotational molding is a favored process for making hollow
parts (particularly large parts) or for parts with complex
geometries. Depending on part design and processing
conditions, Tefzel™ ETFE HT-2195 can also be used torotoline items; whereby, the Tefzel™ binds to the innersurface of the part to form a lining.
Properly processed rotational moldings made from Tefzel™
ETFE HT-2195 provide the superior properties typicalof the fluoroplastic resins: retention of properties after
service at 150 °C (302 °F), useful properties at –100 °C(–148 °F), and chemical inertness to most industrial
chemicals and solvents. Molded products have excellent
stiffness and high ultimate elongation.
Statements, or data, regarding behavior in a flame
situation are not intended to reflect hazards presentedby this or any other material when under actual fireconditions.

Processing
For rotational molding, Tefzel™ ETFE HT-2195 powderis placed inside a hollow metal structure that is slowly
rotated biaxially and heated above the melting point of
the powder around 257 °C (495°F).
Frequently, the mold or part containing the resin ispreheated (with rotation) to a temperature just below
the melting point of the resin. Then, the temperature is
raised to above the melting point of the resin to allow
for formation of the lining. As the powder melts, it isdeposited on the inner surface of the structure. Powder
flow and distribution are critical, because the high melt
viscosity of Tefzel™ limits the lateral flow of melted resin. Acooling step then causes the molten resin to solidify anddensify in place, creating an integral lining or a removable,
hollow plastic part. A typical thickness is about 2.3 mm(0.090 in). A thickness as high as 6.4 mm (0.250 in) has
been molded.
Good moldings and linings require close attention to many
details, such as choice of metals for the mold, preparationof the metal surface, rate of rotation, venting, and heating/cooling cycles. The equipment must operate at hightemperature and resist thermal shock.

Tefzel™ ETFE HT-2195

Fluoroplastic Resin

The times and temperatures of the preheat, fusion,and cooling cycles will vary according to the part, oven,and choice of cooling method, etc. For a wall/lining
thickness of 2.3 mm (0.090 in), the following times andtemperatures are typical.

Safety Precautions

Preheat

5 min at 250 °C (482 °F)

Fusion60 min at 288 °C (550 °F)

Cooling(ambient air)Within certain limits, the fusion temperature can beincreased to permit shorter cycle times. The minimum
time/temperature conditions can be defined as thosetimes, at a specified temperature, that just allow forformation of bubble-free parts and linings. A typicalminimum time/temperature relationship for Tefzel™ ETFE
HT-2195 is:Temperature°C°FTime, min282

540

100288

550

60

293

56050Tefzel™ is relatively dense, compared to other resins. As aguide, to form a 2.3-mm (0.090-in) lining on a part with aninterior surface of 0.093 m2 (1 ft2), use 360 g (0.80 lb) ofTefzel™ ETFE HT-2195.
Rotations for major and minor axes that areconventionally used for rotocasting other polymer resins
have been applied without modification to Tefzel™ ETFEHT-2195. For example, 8 rpm major, 9 rpm minor forboxes, cylindrical pipe sections, tees, spool pieces, etc.;
8 rpm major, 10 rpm minor for spheres and ellipsoids.
These conventional rotations have given acceptable
fluoroplastic resin distribution and casting thicknesses.
Molds must be vented during the rotational molding/rotolining cycle. For best results, use an appropriate
tube as a vent with glass wool in the tube to restrict
contaminants from entering the part.

Before using Tefzel™ ETFE HT-2195, refer to the Safety
Data Sheet and the latest edition of “The Guide to theSafe Handling of Fluoropolymer Resins,” published by The
Society of the Plastics Industry, Inc. (www.fluoropolymers.
org) or by PlasticsEurope (www.plasticseurope.org).
Open and use containers only in well-ventilated areasusing local exhaust ventilation (LEV). Vapors and fumes
liberated during hot processing, or from smoking tobacco
or cigarettes contaminated with Tefzel™ ETFE HT-2195,
may cause flu-like symptoms (chills, fever, sore throat)that may not occur until several hours after exposureand typically pass within about 24 hr. Vapors and fumes
liberated during hot processing should be exhausted
completely from the work area. Contamination of tobaccowith polymers should be avoided.
Mixtures with some finely divided metals, such as
magnesium or aluminum, can be flammable or explosive
under some conditions.
Substrate Considerations
Because the molding/lining process involves molten resin
against the interior part wall, any surface structure on thispart wall will tend to be translated to the part. Therefore, it
is recommended to make the mold surface as uniform as
possible by removing scratches, burrs, etc. Grit blastingwith a coarse grit (e.g., 24-grit aluminum oxide for mildsteel) will enhance surface uniformity.
Storage and HandlingAmbient storage conditions should be designed to avoid
airborne contamination and the formation of water
condensation on the resin when it is removed fromcontainers.
PackagingTefzel™ ETFE HT-2195 is packaged in 25-kg (55-lb)
drums net weight.

Tefzel™ ETFE HT-2195

Fluoroplastic Resin

Table 1. Typical Property Data for Tefzel™ ETFE HT-2195 Fluoroplastic Resin
Property

Test Method*UnitValue

D3418
D3159

°C (°F)g/10 min°C (°F)

257 (495)
25150 (302)

Mechanical
Linear Coefficient of Expansion, 0–100 °C (32–212 °F)
Specific Gravity

D696
D792

mm/mm/°C (in/in/°F)%

9 x 10–5 (5 x 10–5)
1.72

General
Water Absorption, 24 hr
Weather and Chemical Resistance
Average Particle Size
Bulk Density

D570———%—
µmg/L

<0.03
Outstanding270750

ThermalNominal Melting Point
Melt Flow Rate
Upper Service Temperature***ASTM method, unless otherwise specified** The upper service temperature is based on heat-aging tests and represents the temperature at which tensile strength and elongation would be expected to be diminished 50% after
10,000 hr thermal aging. Upper service temperatures above 150 °C (302 °F) may be feasible, depending on such factors as chemical exposure and support from the substrate.
Particularly when considering uses of Tefzel™ ETFE HT-2195 above 150 °C (302 °F), perform preliminary testing to verify the acceptability.
Typical properties are not suitable for specification purposes.

HOW TO USE THE TEFZEL™ BRAND NAME WITH YOUR PRODUCTTefzel™ is a registered trademark of Chemours for its brand of ETFE fluoroplastic resins. The Tefzel™ brand name is licensed by Chemours in association with approved applications.
Without a trademark license, customers may not identify their product with the Tefzel™ brand name as Chemours does not sell such offerings with the Tefzel™ 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 fairuse rights or exhaustion of rights to use the Tefzel™ 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 Tefzel™ brand, please visit 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 discretionand 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 use of 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 a recommendation to infringe any patents.
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Replaces: K-27431 and C-10192 (8/23)