FRP Gratings resins types & used

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Types and Features Of FRP Grating Explained
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• Fiberglass Reinforced Plastic Grating or FRP
  Grating has become a popular alternative to
  conventional metal grating used to make walkways,
  platforms and other kinds of industrial flooring.
  FRP Grating resists corrosion and does not
  conduct heat and electricity. Thus, it is a more
  durable and safer option as compared to metal
  grating. FRP Grating is manufactured by blending
  fibreglass and resin. The resin imparts
  anti-corrosion properties to it while fibreglass
  makes it strong.

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Categorisation of FRP Grating

• FRP Grating is categorised into Moulded and
  Pultruded FRP Grating.
• Moulded FRP Grating is manufactured by laying
  glass fibres continuously in horizontal and
  vertical directions inside a metal mould. Resin
  is then added to the glass fibres in layers.
  After weaving the glass fibres and the resin, the
  panel is cured by heating the mould. Finally, the
  cured panel is removed from the mould. The FRP
  grating panel can either have a smooth surface
  finish or grit can be incorporated into the
  surface. Moulded FRP grating panels come in
  standard sizes and provide multidirectional
  strength. Multidirectional strength means extra
  reinforcement is not required for moulded FRP
  grating.

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• Pultruded FRP Grating is made by a process known
  as Pultrusion. This is a multistep process which
  binds the glass fibres with resin. In the first
  step, fibreglass roving and other materials such
  as mat and woven or stitched fabric are passed
  through a bath containing resin. This process
  infuses resin into the glass fibres. In the
  second step, the resin impregnated glass fibres
  are passed through a preforming die to impart any
  geometrical shape to them. Thereafter, the fibres
  are passed through the heated die. The resin is
  cured inside the heated die. The glass fibres
  then solidify in the same shape as the cavity of
  the die. In the final process, an automatic
  cutter cuts the pultruded grating sections to the
  required lengths. Pultruded FRP grating can be
  customised to any size and shape. The glass to
  resin ratio is high in this grating which makes
  it more sturdy and durable as compared to Moulded
  variety. However, Pultruded FRP grating costs
  more.

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Resins Used

• Moulded FRP Grating can be made using the
  following types of resins.
• Corvex is isophthalic polyester resin which is
  used to make moulded FRP gratings used in highly
  corrosive locations such as chemical plants,
  wastewater treatment plants and many more.
• Vi-Corr is vinyl ester resin which provides very
  high resistance against corrosion. Thus, it is
  used for making moulded FRP gratings for use in
  highly acidic environments.
• XFR or Xtra Fire Retardant resin is used to make
  moulded FRP gratings for places with high risk of
  fire. This is because this resin does not allow
  fire to spread.
• FGI-AM is food grade isophthalic polyester resin
  which makes the surface of the moulded FRP
  grating anti-bacterial in nature.

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• Following kinds of resins are used for making
  Pultruded FRP Grating.
• VEFR is vinyl ester resin having a flame spread
  rating of 25 or less. It is also resistant
  against both acids and alkalis.
• Flame resistant Phenolic resin with flame spread
  rating ranging between 10 and 15. It is commonly
  used for making pultruded FRP gratings for
  offshore applications.
• ISOFR is isophthalic polyester resin which is
  used to make pultruded FRP gratings for
  moderately corrosive locations.

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Features of FRP Grating

• FRP grating is resist corrosion which make them
  suitable for harsh environments. Non-magnetic
  nature protects them against harmful effects of
  magnetic fields. High resistance to heat and fire
  make them suitable for installations at risk of
  fire hazard. FRP gratings can withstand high
  loads because of their greater strength to weight
  ratio. Finally, low weight of FRP gratings make
  them easy to store and transport.

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