Fiberglass Cable Tray
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Corrosion Resistance
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Strength and Durability
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Fire Retardant
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Bonded Construction
MPHusky's ladder-type fiberglass cable provides reliable cable support in
corrosive applications. Both polyester and vinyl ester resin systems are
available and all components incorporate U.V. inhibitors and a surfacing veil
to resist corrosive elements.
From paper mills to refineries to laboratories, sound electrical design requires
an adaptable cable support system that is reliable. Above all, durability and
resistance to corrosion lead to lower overall costs during the life of the
installation.
Technical Data
Properties of MPHusky Fiberglass Cable Tray
The data in this section presents the minimum ultimate values from testing in
conformance to ASTM procedures. These values are obtained from coupons machined
from MPHusky fiberglass shapes and function as a proof test for the MPHusky
composite. MPHusky Corporation verifies the full section bending Modulus of
Elasticity using a simple beam concept at the start of each production run and
periodically thereafter. The designer must consider environmental factors in
designing for the actual application. These factors include elevated
temperature and corrosive materials.
Temperature Effects
The approximate retention of mechanical properties at elevated temperatures are:
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Polyester
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Vinyl Ester
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Ultimate Stress
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100°F
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85%
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90%
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125°F
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70%
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80%
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150°F
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50%
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80%
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185°F
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not recommended
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75%
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200°F
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not recommended
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50%
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Modulus of Elasticity
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100°F
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100%
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100%
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125°F
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90%
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95%
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150°F
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85%
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90%
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185°F
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not recommended
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88%
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200°F
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not recommended
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85%
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These recommendations are based on the normal MPHusky proprietary resin system.
MPHusky Corporation can process other resin systems to achieve higher
temperature ratings for specific applications.
Corrosion Effects
As a general rule, the isophthalic polyester resin is resistant to most acidic
attacks while the vinyl ester resin is resistant to acids and bases. The effect
of corrosive chemicals is temperature dependent with elevated temperature
increasing the corrosion activity. MPHusky Fiberglass cable tray incorporates a
synthetic veil on the surface of all structural shapes which causes a resin
rich layer which enhances corrosion protection.
UV (Ultraviolet Radiation) Effects
UV is a sunlight produced environmental attack of FRP composites. The synthetic
surfacing veil also aids in protecting the composite from UV degradation, the
effect of which is sometimes referred to as "fiber blooming". MPHusky polyester
and vinyl ester also contain a UV inhibitor to enhance the protection against
sunlight.
There is a large variation in the degree of fading from UV degradation based on
the color selected. While this fading is undesirable, the structural integrity
of the composite will remain unaffected as a surfacing veil is utilized.
Coating with materials such as UV stabilized polyurethane based paints are very
effective in maintaining the color and offer the optimum long-term protection
from UV attack.
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