FRP
is an interesting material which allows manufacturers to play around with
its shape and achieve desired results. Majority of the products are produced in
conventional designs and profiles but it has adjustable mechanical properties
which are leveraged by cooling tower
manufacturers in Delhi.
To get into the details, most manufacturers
use four types
of reinforcement in FRP namely E-Glass, Aramid, S- Glass and Carbon. All
these have different qualities like density, tensile strength, tensile modulus
and % elongation to break- E Glass has the maximum density (0.094 lbs/in3),
S Glass has maximum Tensile strength (665,000
psi) and E Glass has more tensile
modulus 10.5 (106 psi) and elongation to break (4.8%). For these reasons E Glass is the most commonly used variant
as reinforcement
in FRP cooling towers.
Further there are Two main Types of Reinforcement
– continuous strand mat and continuous strand roving. The most economic style
is continuous strand mat where a
resin is used as a binder for glass
fibres. Layered with roving,
these are mats of intertwined glass
fibres and the ratio of mat to roving is important for manufacturers as it
decides the longitudinal and transverse strengths. In continuous strand roving- the key is
number of roving used and their location as both these affect the product’s
performance. Roving is the one behind tensile strength of structure and its pultrusion can make the reinforcement
look closer to the surface of product. Resins are the veils used on surface of
the product to distance the reinforcement which otherwise influences corrosion
resistance etc. Commonly used materials
for resins are polyster, epoxy and vinylsester. Epoxy is the one which is more popular and add
considerable strength to the structure and commonly are teamed with E Glass.
Cooling
tower manufacturers play around with FRP to suit their needs and add
different chemicals to augment its properties like aluminium silicate for
finish and insulation, calcium carbonate for opacity and cost effectiveness
etc. the material offers lot of opportunities and its flexibility makes it the
most popular material for cooling
tower construction.