3. Applications of IMFA
Physical properties, partly influenced by the IMFA
are important considerations when designing
different materials or equipment for various uses.
These properties should match the products
intended environment and should not interfere with
its function. Among these products are medical
devices, construction materials, sports equipment
and electrical devices.
4. Carbon Fiber
Come in many forms and can be
manipulated based on a unique
application’s need.
Example: Thousand carbon fibers
are twisted together to form a yarn,
which may be used by itself or
woven into a fabric. The yarn or
fabric is combined with epoxy and
molded into shape to form a
composite materials.
5. Carbon fiber-reinforced
composite materials are
used to make aircraft and
spacecraft parts, racing car
bodies, gulf club shafts,
bicycle frames, fishing
rods, automobile springs
and many other
components where light
weight and high strength
are needed.
6.
7. Carbon Fiber
a long, thin strand of material about 0.0002-
0.0004 in (0.005-0.010 mm) in diameter and
composed mostly of carbon atoms. The carbon
atoms are bonded together in microscopic
crystals that are more or less aligned parallel to
the long axis of the fiber. The crystal alignment
makes the fiber incredibly strong for its size.
8. Polyurethanes
Polyurethanes are a class of
extremely versatile polymers that
are made into flexible and rigid
foams, fibres, elastomers, and
surface coatings. They are
formed by reacting an
isocyanate(a compound having
the functional group NCO) with an
alcohol (having the functional
group OH).
9. 1. Polyurethane foams
The largest segment of the
market for polyurethanes is in
rigid and flexible foams.
Rigid polyurethane foam is
used in insulation,
packaging, marine flotation
equipment, and lightweight
furnishings.
10. 2. Polyurethane fibres
Polyurethanes are the basis of a
novel type of elastomeric fibre
known generically as spandex.
Spandex is a segmented
polyurethane
Spandex is well suited for
garments with high stretch
requirements, such as support
hose, swimsuits, and sportswear
12. 4. Polyurethane surface
coatings
Polyurethanes form some of
the highest-performance
coatings available
Polyurethane surface coatings
are applied to wood, concrete,
and automobile and machine
parts.
13. Medical Devices
Implants and prosthetics are
carefully designed such that
they will not cause infection,
trigger allergic reactions, or
fail to do their functions.
High melting point so that
they will not be damaged
during sterilization.
14. Implants are usually designed to be
insoluble and unreactive to cell
components and body fluids,
particularly those that surround
them.
Some metals are produced as
alloys (mixed with other materials)
to provide strength and better
compatibility to the biological
system.
16. Teflon
This is the brand name for
a number of fluorinated
polymers. Teflon is
polytetrafluroethylene
(PTFE). This is a polymer
with repeating chains of –
(CF2-CF2)- in it.
17. Teflon was first discovered by
Roy J. Plunkett (1910-1994) in
1938 and introduced as a
commercial product in 1946.
18. Teflon characteristics which makes it useful for tons
of industrial and domestic applications in our daily life:
1.Resistant to many chemicals- This includes ozone,
chlorine, acetic acid, ammonia, sulfuric acid and
hydrochloric acid. The only chemicals known to affect these
coatings are molten alkali metals and highly reactive
fluorinating agents.
2.Weather and UV resistance
3.Non stick - Very few solid substances will permanently
adhere to a Teflon coating. While tacky materials may show
some adhesion, almost all substances release easily.
19. 4. Outstanding performance at extreme temperatures - it
can temporarily withstand temperatures of 260C and
cryogenic temperatures of -240C and still have the same
chemical properties. It has an initial melting point of 342C (+-
10C) and a secondary melting point of 327C (+- 10C).
5. Low coefficient of friction - It is the ratio of the force
required to make two surfaces slide over each other
6. Non wetting - Teflon finishes are both hydrophobic and
oleophobic, cleanup is easier and more thorough
20. Market Applications
1.Electrical and electronic
industry.
For example semiconductor
manufacturing. Electronics used
as an insulation material or in
system components.
Wire and cable for outstanding
electrical performance and
durability
