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PFOA is essential to help manufacture
most fluoropolymers, which are widely used in areas ranging
from environmental protection to public safety to defense
and national security.
Examples of the multiple
benefits to society of these products include:
Public
and worker safety
Protecting firefighters.
Fluoropolymers are essential in the manufacture of durable
fire-retardant fabrics that help shed water, resist abrasion
and retain insulation, which in turn diminishes the chance
for burns.
Protecting aircraft crew and
passengers. The risk of fire from insulation materials
in aircraft is significantly reduced by the use of fluoropolymer-based
composites for wiring insulation.
Protecting workers. Protective
garments made of nylon or polyester coated with chemically
resistant polymers (such as polytetrafluoroethylene or PTFE,
a type of fluoropolymer) protect workers from corrosive, alkaline
or acidic chemicals.
Protecting astronauts. Fluoropolymer
technology is used to make the special (white) non-flammable
outer-covering of astronauts' spacesuits, which protect astronauts
against such hazards as micrometeoroids and from temperatures
ranging from -150ºC to +120ºC.
Protecting
office workers. The risk of fire in office buildings is
reduced due to fluoropolymers used to insulate wire and cable
placed in the air space between a suspended ceiling and the
structural floor above. This space is generally used for low-voltage
data transmission materials, such as phone cables, computer
wire and cables, coaxial cable and hookup wire. Flame-resistant
fluoropolymers do not interfere with signal transmission and
are good insulators of low-voltage electricity.
Everyday benefits
Protecting our health. Fluoropolymer
linings and packaging protect pharmaceuticals from contamination
during processing, storage and distribution.
Protective outdoor gear.
Hikers, campers, joggers, fishermen, hunters, skiers,
cyclists and other outdoor enthusiasts depend on lightweight
and breathable fabrics. These are made possible by a thin
PTFE membrane that can be bonded to a variety of fabrics,
such as nylon or polyester. The resulting laminates are waterproof
and keep out chilling wind, while at the same time allow body
perspiration to escape.
Better
cookware. One of the most familiar consumer applications
of fluoropolymers is PTFE-coated, non-stick cookware,
which is widely used for no- and low-fat frying for health
purposes. Other applications for these coatings include steam
irons, tools and gardening implements.
Better weather resistance
in structures. Fluoropolymer coatings and finishes are
valued for their ability to withstand prolonged exposure to
severe climatic conditions. They are applied to metals such
as aluminum, aluminized steel and galvanized steel for use
on exterior surfaces for warehouses, power plants, monument-type
structures and other commercial buildings. Fluoropolymer-coated
fiberglass is used for dome coverings for large buildings
such as the sports stadiums in Pontiac, Michigan, and Minneapolis,
Minnesota. It is also beginning to be used to protect residential
roofing and aluminum siding.
Environmental benefits
Reduced
automobile air pollution. Fluoropolymers are used primarily
to reduce evaporative loss during the transport of fluids,
including reformulated fuels. Fluoropolymers' flame and fire
resistance are especially valuable properties in under-the-hood
fuel systems. Without fluoropolymers, there would be higher
hydrocarbon fuel and lubricant consumption and increased air,
ground and water pollution. Fluoropolymers exhibit 50 to 100
times better fuel permeation resistance than hydrocarbon polymers,
allowing the auto industry to meet the stringent hydrocarbon
emission requirements of the Clean Air Act.
Increased fuel efficiency. The
smaller, more fuel-efficient engines in today's cars have
higher oil and engine compartment temperatures and run at
higher speeds. To protect the engine and drive-train lubricants
from thermal degradation, lubricant manufacturers rely on
harsh chemical additives that attack ordinary sealing materials.
Auto manufacturers use fluoroelastomers and PTFE seals and
gaskets to withstand these aggressive temperatures and lubricant
additives.
Reduced chemical emissions.
For power utilities, chemical manufacturing facilities
and petroleum refineries, fluoroelastomers are critical components
in pollution control devices employed to meet Clean Air Act
requirements, to contain chemicals and to prevent their release
into the environment. Nonwoven fabrics made of PTFE fibers
are used in scrubbers and filters that reduce the emissions
of air pollutants from manufacturing and power generation
plants. These nonwoven fluoropolymer fabrics also protect
against worker exposure to hazardous chemicals used in these
industries.
Protected solar panels. Thin
fluoropolymer films are used as protective coatings for solar
panels to conserve energy. Fluoropolymer films show minimal
degradation despite constant UV radiation exposure. They are
also excellent at transmitting light, making them ideal for
solar panel coatings.
National security benefits
Protection against chemical
warfare agents. Skin exposure reduction paste containing
PTFE is used by the military as a physical barrier to reduce
or delay skin exposure to chemical warfare agents.
Protecting ships and submarines.
Fluoropolymers are used as valving material for nuclear
power plants on ships and submarines. Because they are radiation-resistant,
they do not degrade even in contact with radioactive (contaminated)
water, minimizing the threat of leaks or spills.
Vital
uses in aircraft and aerospace. Because of their high
strength-to-weight ratio, advanced fluoropolymer composites
are used in aircraft and aerospace applications such as fuselages,
wing skins and engine housings. The aircraft and aerospace
industry also makes extensive use of temperature- and chemical-resistant
fluoroelastomer seals and O-rings.
Exceptional performance in other
demanding applications. Fluoroelastomers and fluoropolymer
seals allow for hydraulic and pneumatic systems to run at
both extremely high and extremely low temperatures.
Industry and consumer benefits
Affordable, reliable high-tech
products. The semiconductor industry uses high-purity
fluoropolymers for silicon wafer carriers, pumps, pipe and
fittings, filtration systems and tubing to handle ultrapure
materials (such as deionized water) or in the presence of
corrosive chemicals. Fluoropolymers are the only materials
that meet the industry's needs. The end result is affordable
and reliable high-tech consumer products.
More efficient, better-performing
cars. The automotive industry uses fluoropolymers in a
wide range of applications. They are in the body, chassis
and suspension, in the power steering assembly and in delicate
sensor assemblies. They protect passengers through their uses
in seatbelt guides, brake assemblies and windshield wiper
blades. They are in strut piston seals; gas spring components;
automotive fluids such as gear-lubricating fluids, engine
oils and other "extended life" lubricants; self-lubricating
tubing for push-pull cables; sliding elements for shock absorbers,
and sliding elements for door hinges. They are also used in
heat/cooling system management, in wire and cable insulation
and jacketing, in the fuel and emission system and in the
power-train.
Efficient oil and natural gas
production. The trend in drilling has been toward increasingly
deeper wells where high pressures, high temperatures and corrosive
chemical environments are encountered. Fluoroelastomers are
ideally suited for "down-hole" applications such
as seals, valves, packings and liners. In the oil field, oil
well blowout protectors are coated with fluoropolymers to
make sure they will work, even after months or years of exposure
to the environment.
Better chemical processing.
Chemical processing industries make extensive use of fluoropolymers,
where they are used for gaskets, valve components, anticorrosion
linings for fittings, pumps, reinforced tubes, hoses, valves,
tanks, vessels, heat exchangers, laboratory equipment, instrumentation,
and pipes; dip tubes; expansion bellows; nozzles; pump packings;
seals; cladding (a protective or insulating layer) for chemical
processing equipment; microporous and ultrafiltration membranes;
pipe plugs; seal glands (for pumps), and tower packings. These
applications allow the chemical industry to produce high-purity
and affordable components for pharmaceuticals and a wide range
of consumer and industrial products.
Electrical
safety. The same electrical and safety qualities that
make fluoropolymers useful for data transmission cables also
increase electrical safety in cable connectors, cable jacketing,
circuit breakers, heat trace cable, leak trace cable, stand-off
insulators and tubing.
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