ABS - Excellent
impact strength and impact resistance. Used extensively
in appliances, automotive and computer components.
May be painted and plated.
Celcon®) - Acetals display good impact
resistance, dimensional stability and outstanding surface
hardness due to their high degree of crystalinity.
They have high dielectric strength and are resistance
to many solvents. They also exhibit negligible water
absorption. Typical applications include roller bearings,
gears, reels, counters, control cams, valves and pump
CPVC - Chlorinating
PVC results in a polymer that has all of PVC’s
good qualities, plus improved fire retardance, weatherability,
a higher maximum working temperature and light-fastness.
Ertalyte® (PET) -
Polyethylene terephthalate is a clear, crystalline plastic
possessing high strength and low vapor permeability.
Because it is also sterilizable and radiation resistant,
it is used extensively as a container for carbonated
beverages, liquor and other food products. It is also
generally approved for use in the processing and packaging
FEP® - Fluorinated
ethylene propylene has a low friction coefficient, is
resistant to weathering and is useful from cryogenic
temperatures to about 390F. It has a low dielectric constant
and is flame and ignition resistant. Although its mechanical
properties are not equal to some other engineering fluroplastics,
it is commonly used for electrical insulation, cable
sheathing, and as chemically resistant coatings and films.
Halar® (ECTFE) -
Ethlene-chlorotrifluorethylene copolymer exhibits better
mechanical properties than many other fluoroplastics.
But like other fluoroplastics, its flame retardance,
chemical resistance and low dielectric constant remain
constant over a wide temperature range. These qualities
make it suitable for use in such products as electrical
insulation, monofilament, tank linings, housings, and
electrical components. It may be usefully employed at
temperatures from the cryogenic range to about 330F.
Isoplast urethane resins are high tensile strength, chemically
resistant resins originally developed for medical use.
They are available in long glass fibre-filled grades.
Isoplast® combines the toughness and dimensional
stability of amorphous resins with the chemical resistance
of crystalline materials. The long fibre reinforced grades
are strong enough to replace some metals in load bearing
Kel-F® (PCTFE) -
Polychlorotrifluoroethylene is highly transparent. It
also exhibits good electrical properties, and is resistant
to most common solvents at room temperature. PCTFE is
less permeable to gasses and water vapor than any other
Kynar® (PVDF) -
Polyvinylidene fluorides has a useful temperature range
of -148F to 302F. It has good strength, creep resistance
and weatherability. Lime some other chlorinated engineering
plastics, it will not support combustion in air.
Lexan® (PC) -
Polycarbonate exhibits the highest impact strength over
a range of temperatures from -60F to 270F. It is fine
for all precision parts, or where transparency is desired.
Its water-clear transmittance (89%) makes it excellent
for visors or guards. It shows good creep resistance
and has a temperature-independent dielectric constant,
as well as good insulating properties.
Noryl® (PPE) -
Modified polyphenylene ether is one of the more widely
known engineering plastics and has gained UL and FDA
approval for a broad spectrum of moldable and foamable
grades. It has good impact strength at low temperatures
and is resistant to many agents, including steam. It
may be furnished in either unreinforced grades and remains
stable when processed. Yield strength or reinforced grades
is comparable to aluminum. Typical end uses include computer
and electric housings, automotive body parts, and piping.
Nylon - All grades
possess toughness and resiliency and have a high fatigue
strength. Resistance to oils and hydrocarbon solvents
is also good. Almost all formulations are also self-extinguishing
and retain stable mechanical
properties at temperatures from -75F to above 225F. They are widely used
for latches, cams, gears, and many other moving parts due to their excellent
abrasion and impact resistance. Nylon is also available in a variety
of cast forms and mobdylidenum disulphide filled grades (Nylatron® GS).
PEEK® - Polyetheretherketone
is a new material which has excellent chemical resistance
and is rated for continuous service to 470F. It is tough
and strong, with low creep, and has the best fire safety
rating of all thermoplastics. It tolerates radiation
to 1100M rads without undergoing significant change.
Applications include engine parts, aerospace components
and other uses which require PEEK®’s unique
PFA - Perfluoroalkoxy
resins, which are marketed under the Teflon® trademark,
have properties similar to FEP and PTFE. However, unlike
FEP, PFA may be used to temperatures of approximately
500F. While PFA shares PTFE’s chemical resistance
and low coefficient of friction, it is also a moldable,
and extrudable material. Some applications include packing
and seals, cable sheathing, and fire-retardant insulation.
PES® - Crystal
clear polyethersulfone has truly outstanding creep resistance,
dimensional stability, and excellent mechanical properties.
It can withstand continuous use in air and water at temperatures
to above 350F. It has low
flammability and minimal smoke emission during burning. Its weatherability
and solvent resistance are also good. Since PES is sterilizable, it has
a wide variety of medical applications. Other applications include electronic
components of all types, and structural parts.
Phenolic - Phenolic
laminates show Outstanding temperature resistance, dielectric
strength and electrical resistance, all of which remain
uniform to 420F or above. Most grades also exhibit good
mechanical properties, such as impact strength, also
outstanding dimensional stability under loading. Phenolics
have long enjoyed industry-wide acceptance as insulators,
electrical housings circuit boards, electric motor components,
seals and valves.
Polyethylene (PE) -
Because of it s flexibility at low temperatures, excellent
electrical resistance and low dielectric constant, Polyethylene
is unique. PE’s also make it ideal for applications
such as rollers, skids and other end-users.
PE is available in a wide range of densities and formulations.
Polyproylene (PP) -
This natural has good impact resistance and structural
rigidity. It is unaffected by any solvent at room temperatures.
It has excellent insulating properties and is extremely
lightweight. Its high fatigue strength makes it a top
choice under cyclic loading conditions.
Polystyrene (PS) -
is naturally clear. It exhibits excellent chemical resistance
and is more resistant to irradiation than is PE or PP.
Electrical resistance is also good. This, plus the ease
with PS can be painted or shielded, has led to extensive
electrical and electronic applications. PS is also often
used in appliances and housings. Special high gloss and
high impact grades are also widely available.
Polysulfone (PSO) -
is a naturally transparent, true engineering plastic
whose electrical and mechanical properties are constant
up to temperatures above 320F. It is also rated for continuous
service in steam to 300F. It shows
excellent resistance to alkalies, acids and salts, as well as to many
hydrocarbons. PSO is suited for microwave use, and may also be plated
or glass-filled. Amongst its many varied uses are many medical, automotive,
and electronic applications.
PVC - Polyvinylchloride
exhibits little or no water absorption. Since it is chlorinated,
PVC also possesses natural flame retardant qualities.
PVC’s are available in a wide variety of colors
and varying compositions. They are typically employed
in packaging, water and chemical piping assemblies, appliances,
furniture and other components.
Teflon® (PTFE) -
An extremely low coefficient of friction makes Polytetrafluoroethylene
the ideal choice where surface wear might otherwise be
a problem. PTFE also exhibits a useful service life from
below -100F, to temperature of over 500F. Its resistance
to solvents is also excellent throughout a wide range of
temperature. Its low dielectric constant and electric resistance
also remain constant throughout this range.
Tefzel® (ETFE) -
Ethylene-tetrafluoroethylene copolymer is a high impact
material with properties similar to ECTFE. It is commonly
used to manufacture pumps, valves, computer housings,
and other electrical components.
Torlon® (PAI) -
Polyamide-imide possesses a combination of great mechanical
strength, the ability to withstand radiation, usability
from approximately -300F to 500F, and resistance to most
chemicals at room temperature. It is also flame retardant
and gives off almost no smoke when burned. It is available
in unreinforced grades and is readily machinable. This
combination of assets makes it a good metal substitute
for aerospace and electronic applications. It is commonly
used for bushings, seals, and distributors in engines
ULTEM® - Unreinforced
ULTEM® (polyetherimide) keeps its hardness, and mechanical
properties from -40F, up to temperatures of 356F. It
is radiation-resistant, microwave transparent and is
naturally flame-retardant. Reinforced
grades have even higher mechanical strength. Because of its unequalled
properties, ULTEM® is the ideal replacement for steel and other metals.
It also has a wide range of electronic and medical applications.
UHMW - While ultrahigh-molecular-weight
polyethylene retains the inherent qualities of low-density
polyethylene, its increased toughness allows its use
in a wide variety of rugged applications. It is commonly
employed to provide
rollers, cams, impellers and bumper guards. Because of its high lubricity,
it is also used to coat conveyer-belts, ramps and hoppers. UHMW’s
imperviousness to attack by steam and chemicals, and its continued good
performance at low temperatures, has also enabled it to gain FDA approval
for a variety of applications within the food and drug industries.
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