What
is a Fluoroplastic, Fluoropolymer or Fluorocarbon Films?
A
group of plastic films where the molecules contain carbon and fluorine
which dramatically change the properties to include: very high
working temperatures, no-stick characteristics, very high resistance
to chemicals and solvents, and very high electrical resistance.
F fluorine Fluorine
typically imparts chemical resistance, thermal stability, and
low surface energy. Fluoro Intermediates are used as the key building
blocks require fluoropolymers.
TFE tetrafluoroethylene TFE
is the key per fluorinated monomer used to produce a wide range
of fluoropolymers. Most Teflon® film branded
fluoropolymer products are derived from TFE. This monomer can
also be used to add fluorinated functionality to a variety of
hydrocarbon precursors. For example, a fluorinated ether can be
synthesized through nucleophilic addition of an alkoxide across
the double bond of TFE.
PPVE perfluoropropyl
vinyl ether A clear liquid that is
useful as a comonomer in polymerizations and can also
be used to add fluorinated functionality to organic precursors.
PPVE is a per fluorinated vinyl ether comonomer that
is used in polymerizations to produce fluoroplastics.
Per fluorinated vinyl ethers are effective in disrupting
crystallinity in TFE based polymers and PPVE is commonly
used in the synthesis of PFA. Two co-polymers using PPVE
as co-monomer are commercially important: TFM, a copolymer
with about 0.1% PPVE & PFA,
a copolymer with 3-15% PPVE. DuPont
Fluoromonomer PPVE.
DuPont
Product Information H-51252-2
PTFE polytetrafluoroethylene Basic
PTFE is a linear polymer of TFE and is a true homopolymer. Virgin
(pure) PTFE is the most unusual and exhibits the best performance
in terms of temperature resistance, chemical resistance, and non-stick
properties. Its major disadvantage is that it does not actually
melt when heated and therefore is difficult to process, and very
unconventional techniques are needed to mold, extrude and weld
it.
Modified
PTFE polytetrafluoroethylene Modified
PTFE is skived from a modified homopolymer PTFE resin containing
some percentage of a fully fluorinated comonomer (usually PPVE).
This chemically modified version of PTFE yields a material with improved
electrical and physical properties over virgin PTFE. The result is
a material that exhibits equivalent chemical resistance, increased
tensile strength and greater elongation. Unlike virgin PTFE, conventional
plastic techniques can be used to process this material (ie thermally
bonding or fusing Modified PTFE to itself). Because of these properties
Modified PTFE is often a lower cost alternative to other melt processable
films (ie PFA and FEP). There are a variety of different resin manufacturers
and different processor recipes available, but only three resin types
have been found to be suitable for Thermal
Impulse Heat Sealing. We recommend Modified PTFE skived from Dyneon
TFM 1700 resin, DuPont
NXT 70 resin or Daiken M-111 resin. Manufacturers of Skived Modified
PTFE from these resins include DeWal Industries: DW
200 from Dyneon TFM 1700 resin, DW
220 from Dyneon TFM 1700 resin, and DW
201 from DuPont NXT 70 Resin.
TFM™ PTFE polytetrafluoroethylene TFM™ is
a chemically modified PTFE resin manufactured by Dyneon™,
with about 0.1% PPVE. TFM™ retains all the proven advantages
of conventional PTFE plus it offers enhanced properties including:
substantially lower deformation under load, lower permeation due
to denser polymer structure and fewer voids, better weldability,
improved stress recovery (particularly at elevated temperatures),
smoother surface finishes, and higher transparency. The most common
brand name is Dyneon™ TFM™ PTFE
resin.
Teflon® Film is a Registered
trademark of DuPont, Teflon® film has become a familiar household
name, recognized worldwide for the superior non-stick properties
associated with its use as a coating on cookware and as a soil
and stain repellant for fabrics and textile products.The Teflon® film trademark
was coined by DuPont and registered in 1945; the first products
were sold commercially under the trademark beginning in 1946.
Today, the family of fluoropolymers from DuPont consists
of: PTFE, the original resin; FEP, introduced in 1960; Tefzel® ETFE film
in 1970; and PFA, in 1972. For more information on the history
of Teflon® film visit www.teflon.com
FEP fluoroethylene-propylene FEP
was developed by DuPont as a Melt Processable Teflon® film which
can be processed by normal plastic methods unlike virgin PTFE.
With the same benefits as other fluoropolymers FEP has a lower
maximum operating temperature of 392°F (200°C). The most common
brand names include DuPont
Teflon® FEP film and Saint-Gobain
Norton® FEP.
PFA perfluoralkoxy PFA
was developed by DuPont as a High Temperature Teflon® film with
a maximum operation temperature of 500°F (260°C),
while maintaining similar properties to other fluoropolymers.
Of course this added temperature resistance also
adds a significant increase in cost. PFA is a melt-processable
thermoplastic with similar chemical resistance
to PTFE, but has much lower porosity and is translucent.
The most common brand names include DuPont
Teflon® PFA film and Saint-Gobain
Norton® PFA.
ETFE ethylene-tetrafluoroethylene-copolymer ETFE
was developed by DuPont as a Tough Teflon® film with
similar hardness compared to nylon, unlike virgin PTFE & FEP.
The improvements in stiffness is paid for by reduced
chemical resistance and working temperature. The most
common brand names include DuPont
Tefzel® ETFE and Saint-Gobain
Norton® ETFE.
ECTFE ethylene-chlorotrifluoroethylene ECTFE
is a tough fluoroplastic with similar properties to ETFE,
but manufactured from Halar® resin
resulting in superior chemical resistance. By far ECTFE
film provides the highest abrasion resistance and highest
dielectric strength of any fluoropolymer film. The most
common brand names include Saint-Gobain
Norton® ECTFE or Westlake Plastics Co ECTFE made from Halar 300 resin. ECTFE also is known by its resin Halar® manufactured by Solvay Solexis
PVDF polyvinylidene-fluoride PVDF
is a high molecular weight thermoplastic polymer. PVDF is
a very hard plastic roughly comparable to ECTFE, but relatively
inexpensive in comparison to other fluoroplastics. Good chemical
resistance, but not as good as ECTFE or ETFE. The most common
base resins are Kynar® manufactured
by Elf
Atochem North America or Solef® manufactured
by Solvay
S.A.
PVF polyvinyl-fluoride PVF
is also a very tough fluoroplastic with limited chemical
and temperature resistance. Commonly used as a film in gas
sampling bags, solar heating panels, and printing circuit
laminating. The most common brand names include DuPont
Tedlar® PVF and Saint-Gobain
Norton® PVF.
PCTFE polychloro-trifluoroethylene PCTFE
films are a line of film-based materials that are derived
from high-performance resins and additional components used
extensively in barrier applications. PCTFE films can be formulated
to optimize a variety of attributes such as chemical resistance,
moisture barrier, dielectric strength, thermal stability,
optical clarity, coefficient of friction, and adhesion. PCTFE
is used extensively in pharmaceutical blister packaging for
its chemical and moisture resistant properties where is goes
by the trade name Aclar®. Alone, or pre-laminated to materials
such as PET, PVC and COC, thick PCTFE films can be thermoformed
into a variety of shapes and parts where clarity, moisture
barrier, chemical resistance, heat stability, and dielectric
properties of the film are not compromised. The most
common trade name is Honeywell
Aclar®
PEI polyether
imide PEI is an amorphous thermoplastic
polyetherimide offering outstanding high heat resistance, high strength,
modulus and broad chemical resistance. Its balance of properties
and processability offers design engineers exceptional flexibility
and freedom to innovate. The most common brand name includes GE
Plastics ULTEM® or Westlake Plastics Co. Tempalux® Film made from ULTEM® Polyetherimide Resin
PP or PPL polypropylene PP is a lightweight plastic that offers relatively high purity characteristics at a price well below PVDF or PTFE. PP is similar to polyethylene but is lighter and offers even better heat resistance, tensile strength, abrasion resistance, and lower dielectric constant. Polypropylene is a thermoplastic polymer, used in a wide variety of applications. PP is unusually resistant to many chemical solvents, bases and acids. There are many manufacturers of extruded and blown polypropylene.
PSU polysulfone Polysulfone
is a tough, rigid, high-strength thermoplastic with a heat
deflection temperature of 343°F (174°C), and maintains
its properties over a wide temperature range. Transparent,
opaque and glass-fiber reinforced grades of UDEL® resin
are available for injection molding into complex parts
or extrusion into forms such as rod, film, sheet, profile
and tubing. Shapes can be machined for prototype evaluations;
film and sheet can be thermoformed on conventional equipment. UDEL® resin
can also be blow molded. The most common brand names include Solvay
Advanced Polymers UDEL® Resin or Westlake
Plastics Co Thermalux® Film made from UDEL® Polysulfone Resin.
PI polyimide A
high performance polymer film (amber in color) which combines
excellent physical, electrical, and mechanical properties at extreme
temperature ranges -269°C to 400°C (-452°F to 752°F).
Polyimide film offers good dimensional stability combined with
excellent chemical resistance, with no known solvents. PI is used
in a wide variety of applications such as substrates for flexible
printed circuits, transformer and capacitor insulation and bar
code labels. The most common brand names include DuPont
Kapton® polyimide film and Westlake Plastics Imidex® polyimide film made from
Aurum® polyimide resin. Various grades of Kapton® film
are available but only some are true thermoplastic polyimides, including Kapton® JP and Imidex®. Kapton® JP has
been designed to give optimum forming characteristics over HN,
FN, and other grades (attributes include antistatic, thermally
conductive, ptfe coated, cryogenic insulation, corona resistant,
etchable or pigmented for color).
PEEK polyetherketone PEEK
plastic is a high performance engineering thermoplastic. PEEK
offers chemical and water resistance comparable to PPS (PolyPhenyleneSulfide),
but can sustain higher temperatures. PEEK
plastic excels in hostile environments, able to withstand temperatures
of 480 degrees Fahrenheit continuously and in hot water or steam
without permanent loss of its physical properties. This makes
it a high strength alternative to fluoropolymers. The
most common brand names includes Modern
Plastic Victrex® PEEK or Evonik Industries Vestakeep® PEEK. |
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High
Performance Film Data Sheets
Not
finding all the information you're looking for in our data charts,
then view the film vendor data sheets for the following in Adobe® Acrobat® *.PDF
file format:
Teflon® FEP Film (Type A & Type L)
FEP
Specification Bulletin H-55003-2
FEP
Properties Bulletin H-55008-2
Norton® FEP,
Type FG; Type FS
Saint-Gobain
FEP
Teflon® PFA,
Type LP Film
PFA
Specification Bulletin E-80143-2
PFA
Properties Bulletin H-04321-2
Norton® PFA
Saint-Gobain
Performance Plastics PFA
Tefzel® ETFE,
Type LZ Film(CLZ & CLZ- 20)
ETFE
Specification Bulletin E-80420-1
Norton® ETFE
Saint-Gobain
ETFE
Kapton® PI,
Type JP
DuPont
Specifications H-38479-4
DuPont
Technical Information H-62026-2
Norton® ECTFE from
Halar® resin
Saint-Gobain
ECTFE
Halar® ECTFE
Solvay Solexis Halar® ECTFE
Modified PTFE
DeWal
Industries Modified PTFE DW200
DeWal
Industries Modified PTFE DW220
DeWal
Industries Modified PTFE DW201
Aclar® PCTFE & Clarus® PCTFE
Honeywell
Aclar® 33C (7.80 mil)
Tedlar® PVF
DuPont
Technical Information E-47437-1
DuPont
Product Information H-51252-2
Ultem® PEI
GE
Plastics ULTEM® 1000 resin
Tempalux® PEI
Westlake
Plastics Tempalux® PEI
Thermalux® Polysulfone
Westlake
Plastics Thermalux® PSU
Vestakeep® PEEK
Evonik Vestakeep® PEEK 4000G resin
Aclar® PCTFE
Honeywell P-Series HS Film

DEFINITITIONS
dielectric - An insulating
material that separates the elements of various components
including capacitors and transmission lines. Dielectric materials
include air, plastic, mica, ceramic, and Teflon® film. A dielectric
material must be an insulator.
dielectric
constant - The ratio of the capacitance
of a capacitor with a certain dielectric material to the capacitance
with a vacuum as the dielectric. The dielectric constant is considered
a measure of the capability of a dielectric material to store an
electrostatic charge.
dielectric strength -
The potential gradient at which electrical breakdown occurs. |