TRANSDEV CATALOGUE 2018 MARCH.pdf

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PLASTICS OVERVIEW
Material Characteristics
Polycarbonate
A hard, rigid material noted for good
impact strength and high modulus of
elasticity, combined with excellent
electrical, low moisture absorption and
weathering properties. May be subject
to some stress cracking when exposed
to certain solvents, paints and
adhesives. Widely used in the
manufacture of electrical and
electronic components; while sheet
forms of the material are used to make
glazing and safety guard products.
PEEK
(Polyether-Etherketone)
PEEK is a semi-crystalline
Thermoplastic used for high
temperature applications. The material
is suitable for continuous use for
temperatures up to 240°C and offers
excellent chemical resistance, low
moisture absorption and excellent
wear and abrasion resistance. The
material is V-O rated and exhibits very
low toxic gas and smoke emission
when exposed to flame.
It should be noted that once
temperature is above the glass
transition temperature of 143°C there
is a decline in the stiffness of the
material under load.
Glass filled PEEK (450GL30) uses Glass
fibre in order to reduce the thermal
expansion rate of the material and
increase flexural strength. This is
especially apposite where
temperatures of above 143°C are
present.
Bearing Grade PEEK (450FC30) is a
grade with added Carbon fibre,
Graphite and PTFE, to enhance low
friction capabilities of the material,
coupled with heat dissipation.
Applications include valve seats, seals,
bearings, bushings, electrical insulation
components, semi-conductor
processing equipment parts, oil field
tooling components, etc.
Other Belts
TUFNOL (sheet form)
Phenolic paper grades
Very economical grades. Strong,
rigid and good electrical insulation
properties. Impact strength not as high
as other grades and not recommended
for use where toughness and high
stress capabilities are required.
Excellent as rigid, non-metallic
materials and widely used
for electrical applications.
Swan Phenolic Paper
Good electrical insulation properties,
machines well and used for insulating
bushes, spacers and sleeves.
Phenolic cotton grades
The workhorse grades for all general machine applications. Strong, tough and
easy to machine with good electrical insulating properties, especially the
finer weave grades. Medium to coarse weaves are usually recommended for
use where larger, more rugged components are required, being stronger and
tougher. Fine weave grades have higher dimensional stability and strength
when used in thin sections and also have higher electrical properties.
Bear Phenolic Cotton
Medium weave grade with good
electrical properties and lower
water absorption than other
cotton grades. Bear was especially
developed for use as a bearing
material. Good dimensional stability
and enhanced wear properties give
excellent performance when used in
bearing applications using water or
conventional greases and oils
as lubricants.
Whale Phenolic Cotton
Medium weave grade being the
most widely used for general
purpose applications. Strong and
robust with good mechanical and
electrical properties.
Carp Phenolic Cotton
High quality, fine weave grade with
excellent mechanical strength and
electrical properties. Low water
absorption. Easily machined to
accurate and precise applications.
NOTE: Tube, square and hexagonal rod sections available upon request.
T +44 (0)1202 675 555 F +44 (0)1202 677 466 E sales@transdev.co.uk
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