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DuPont Fluoroproducts
DuPontTM Teflon® PFA RMI HP Plus
fluoropolymer resin

Rotational Molding Fluoropolymer Resin

Brand
Teflon® is a registered trademark of DuPont for its brand of fluoropolymer resins, which can only be licensed by DuPont for use in approved applications. Customers who wish to use the Teflon® trademark in connection with DuPont PFA products under license from DuPont should contact (800) 262-2745. Without a license, customers may not identify their product as containing Teflon®,
but may refer to the resin as PFA RM1 HP Plus.

Description
Teflon® PFA RM1 HP Plus is a premium rotomolding resin. Its most unique feature is the advanced chemistry of Teflon® PFA HP Plus that will provide superior processibility, products, and smooth surface. In addition, Teflon® PFA RM 1 HP Plus is chemically modified to yield enhanced resin purity, lower extractable fluorides, and freedom from other foreign materials. This product contains no additives and is designed for hostile chemical environments where purity in the parts-per-billion range is needed.

The properties of Teflon® PFA RM1 HP Plus in molded form are similar to other grades of
Teflon® PFA HP Plus (perfluoroalkoxy) fluoropolymer resin. Many properties are similar to those
of polytetrafluoroethylene.

Rotational molding is a favored process for making large, hollow parts or for lining objects with complex inside surfaces. Applications for Teflon® PFA RMI HP Plus include linings molded in place using the object to be lined as the mold. Teflon® PFA RMI HP Plus is preferred when high performance is a major requirement. The DuPont Oval Logo, DuPont, The miracles of science™, and Teflon are trademarks or registered trademarks of EL du Pont de Nemours and Company.

Properly processed rotational moldings made from neat Teflon® PFA RMI HP Plus resin provide the superior properties typical of fluoropolymer resins: retention of physical properties after service at 250°C (482°F), useful properties at -196°C (-320°F), and chemical inertness to nearly all industrial chemicals and solvents. Dielectric properties are excellent. Molded products have moderate stiffness and high ultimate elongation. Refer to Table I for typical property data. In a flame situation, products of Teflon® PFA RMI HP Plus resist ignition and do not themselves promote flame spread. When ignited by flame from other sources, their contribution of heat is very small and added at a slow rate with very little smoke.

Typical End Products
Teflon® PFA RMI HP Plus is ideal for many end products for fluid handling in the 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 permit uniform and smooth coating by the PFA HP Plus resin flow is a candidate for lining, provided it can withstand high temperatures. Because of its enhanced resin purity, Teflon® PFA RMI HP Plus is suitable for use in semiconductor manufacture and fluid handling systems for industry or life sciences.

Processing
For rotational molding, Teflon® PFA RMI HP Plus resin is placed inside a hollow metal structure that is slowly rotated biaxially and heated above the melting point of the resin (285°C) [545°F]). As the resin melts, it is deposited on the inner surface of the structure. Resin flow and distribution are critical because the high melt viscosity of Teflon® PFA HP Plus limits the lateral flow of melted resin. A cooling step then causes the molten resin to solidify and densify in place, creating an integral lining or a removable, hollow plastic part.

Good moldings require close attention to many details such as choice of metals for the mold, preparation of the metal surface, rate of rotation, venting, and heating/cooling cycles. The equipment must operate at high temperature and resist thermal shock.

Safety Precautions
WARNING!VAPORS CAN BE LIBERATED THAT MAY BE HAZARDOUS IF INHALED.
Before using Teflon® PFA RM I FIP Plus, read the Material Safety Data Sheet and the detailed information in the “Guide to the Safe Handling of Fluoropolymer Resins,” latest edition, published by the Fluoropolymers Division of The Society of the Plastics Industiy-available from DuPont.

Open and use containers only in well-ventilated areas using local exhaust ventilation (LEV). Vapors and fumes liberated during hot processing, or from smoking tobacco or cigarettes contaminated with Teflon® PFA RM 1 HP Plus, may cause flu-like symptoms (chills, fever, sore throat) that may not occur until several hours after exposure and pass within about 24 hours. Vapors and fumes liberated
during hot processing should be exhausted completely from the work area; contamination of tobacco with polymers should be avoided.

Mixtures with some finely divided metals, such as magnesium or aluminum, can be flammable or
explosive under some conditions.

During rotational molding, a large volume of air is used to melt Teflon® PFA RM1 HP Plus resin and to cool the molten resin. Vapors from molten resin should not be allowed to enter the operating area. Negative pressure should be maintained in the oven chamber so that off-gas will be exhausted to the outside. The same is true for the cooling chamber where exhaust blower rating should exceed that of the cooling air blower. Hot molds should be disassembled in a well-ventilated area. Vent tubes should be used on all molds to avoid pressure buildup.

Storage and Handling
The properties of Teflon® PFA RM 1 FIP Plus are not affected by storage time. Ambient storage conditions should be designed to avoid airborne contamination and the formation of water condensation on the powder when it is removed from containers.

Packaging
Teflon® PFA RM1 HP Plus is packaged in drums containing 45.4 kg (100 lb) net weight.

Freight Classification
Teflon® PFA RM1 HP Plus is classified as “Plastics, Materials, Granules.”

Typical Property Data for DuPont™ Teflon® PFA RMI HP Plus Fluopolymer Resin
Property ASTM
Test Method
Unit Nominal Value
Thermal
Nominal Melting Point
Flow Rate
Upper Service Temperature

DTA-El68
D3307
--

°C
g/10 min
°C (°F)

285-300
17-26
250 (482)
 
Mechanical
Linear Coefficient of Expansion, 0-100°C (32-212°F)

Specific Gravity
Tensile Strength, Room Temperature
Ultimate Elongation, Room Temperature

D696

D792
D3307
D3307

um/m/°C
(um/m/°F)

MPa (psi)
%

140
(78)
2.15
27 (3,900)
780
 
Electrical
Dielectric Strength, 0.25 mm (0.010 in.)

D149

kV/mm (V/O.001 in.)

25 (600)
 
General
Water Absorption, 24 hr
Weather and Chemical Resistance
Limiting Oxygen Index

D570

D2863

%

%

<0.03
Outstanding
>95

The Miracles of Science®
The DuPont Oval Logo, DuPont™, The Miracles of Science™, and Teflon® are trademarks or registered trademarks of E.I du Pont de Nemours and Company.

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