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Polyurethane
bridges the gap between rubber and plastic on the
hardness scale. It can be produced in hardness ranging
from 20 Shore A to 85 Shore D allowing it to be utilized
for many different applications.
Polyurethane has excellent abrasion resistance and has
out performed ordinary rubber and plastic sometimes by a
factor of as much as 8 to 1. For applications in which
wear is a problem, substituting existing parts with one
made out of polyurethane can reduce the frequency of
replacement. This in turn means less down time and
greater productivity.
Polyurethane has significantly better impact resistance
than structural plastics. It has load-bearing capacity
for compression comparable to cast steel which is
greater than natural rubber. Polyurethane also has high
tensile strength.
The customisation of these physical properties can
produce a product that is optimally suited to many
different applications. |
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PHYSICAL
PROPERTIES
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Hardness
(Shore A) 90 A ± 2
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Tensile
strength 200-300 Kg/Cm2
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Ultimate
Tensile 42.0
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Elongation
at Break(%) 500-600
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Tear
Strength 90-130 Kg/Cm
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Compression
Modulus (PSI) 4000.0
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Resilience
(%) 50.0
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Compression
Set (%) 30.0 (After 22 hrs. at 70oC)
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Working
Temperature -40oC to +110oC
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SPECIFIC ENGINEERING ADVANTAGES
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Excellent Abrasion Resistance & Impact and Shock Resistance
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Hydraulic Stability & Good Rebounce Characteristics
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Good Machinablity & High Load Bearing Capacity
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Controlled Coefficient of Friction
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Good Bonding to Metals, Wood & Plastics
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Oil Grease & Chemical Resistance
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Ozone, Oxygen & Radiation Resistance
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Wide Temperature Stability (-40oC to +110oC)
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High Wear & Tear Resistance
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ENVIRONMENTAL PROPERTIES
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The
physical properties of polyurethane are very resistant
to environmental conditions such as heat, cold, and
aging. Studies have shown that, upon weathering at
ambient conditions for 12-15 years, the tensile
strength, elongation and hardness of polyurethane
changed less than 10%. Polyurethane has excellent long
term stability in water and is resistant to swelling and
deterioration in temperatures as high as 80oC.
It is also very resistant to mold, mildew and fungus
growth, which makes it an excellent choice for
applications in which there is exposure to a moist
environment.
Polyurethane is resistant to oil and solvents and
outperforms metal in chemical resistance. It is also
resistant to radiation and is stable under high vacuum
conditions.
These properties allow polyurethane to be used in some
of the harshest of environments with minimal
deterioration. |
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FEATURES AND BENEFITS
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Polyurethane
can be bonded to metal, wood or fabric giving these
materials a protective layer and therefore extending the
life of the substrate.
Polyurethane can be used to reduce noise levels in
manufacturing facilities by having machinery such as
ductwork and feed chutes lined with polyurethane,
clatter and banging will be reduced.
Polyurethane coatings and parts can be manufactured in a
number of different colours. Colour can improve the
esthetics of structures or equipment. |
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APPLICATIONS
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Bearings,
Gears, Guides & Sprockets
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Brake,
Board, Nip, Metal Forming, Printing, Sanding & Band Saw Pre-Filtration Plant, Silicon Rubber
Laminating, Can Coating, Paper Mill, Drive Rollers
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Bushes,
Seals & Gaskets, Pneumatics, Valve Seals,
Oil Seals, Diaphragms
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Castor,
Trolley, Crane, Forklifts, Star, Bonded, Contact
Wheels
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Pump
Parts
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Hammer
& Dye pads, Press Brake Pads & Stop Pads
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Conveyor
Belts
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Abrasive
Wear Parts
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Scrapper,
Mixing Blades
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Shock
& Impact Absorbers
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Cable
Pulleys, Fairings, Joining, Insulation &
Encapsulation
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Hydraulic
Hose Protectors
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Flexible
Couplings
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Push-On
Sleeves, Heat Shrinking Sleeves
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Pads,
Buffers, chute & Hopper Linings
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Hydro
Cyclones
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INDUSTRIES
Aerospace, Agriculture, Automotive, Building &
Constructions, Coated Fabrics, Electrical, Electronics,
Engineered Components, Food Processing, Glass Industry,
Leisure, Material Handling, Mining & Quarrying, Oil
Chemicals & Marine, Paper & Printing Industry, Seals
& Gaskets, Shoe Industry, Textiles, Water & Utilities,
Wheel & Tyres, Woodworking. |
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