FRP pultruded products are often stronger then a similar product manufactured by hand-layup, vacuum bag infusion, and other composite processing methods. During the pultrusion process, the many fibre bundles are pulled downstream using hydraulic or caterpillar grippers. Due to this pulling, the fibre filaments are in tension when curing in the heated die. When in tension, the fibres have higher strength values and are better aligned allowing good compaction, with more fibres fitting into a given volume. Fiber density is extremely high, as all excess resin is squeezed out before entering the die. Standard pultrusion can have fibre content of 50% by volume, 70% by weight, creating an extremely strong FRP composite.
FEATURES |
DESCRIPTION |
BENEFITS |
APPLICATIONS |
Strong |
Unit strength in tension & compression in approx 20x that of steel when these propoerties are combined on the basis of unit density |
Optional strength as desired. Exceptionally high impact strength reduces damage potential |
Structural Process equipment support. Tank Supports, Cooling tower ancillaries. Flooring supports. Trusses & Joints |
Light weight |
Density of pultruded components is about 20% of steel and 60% of aluminium. |
Higher performance at less weight. Lower shipping handling & installation costs. Less operational energy demand |
Automative lead springs & bumpers. Prefabricated walkways & Platforms. Bus components |
Corrosion Resistance |
Unaffected by exposure of a great variety of corrosive enviornment & chemicals |
Minimum maintenance costs. Long tern safety. Longer Life |
Chemical plant hand railings gratings, walkways & bridges cable trays, pipe supports |
Electrical Insulation |
Provides strength and rigidity with dielectric propoerties |
Lesser no. of components. Non-magnetic & safe. Predictable insulation values for wide range of frequencies. |
Ladders, cable trays. Switch gear components. Mounting braces and backboards. |
Termal Insulation |
Pultruded Components have a low thermal conductivity, 1/250 of aluminium & 1/60 of steel. |
Reduces installation thickness Elimates condensation problems. Reduces energy operation requirements. |
Bulk head frames. Walk in refrigerator door jams. Window frames. Insulated roll up panel doors |
Consolidation |
Many individual components can be combined into a larger structure |
Reduced assembly cost, reduced inventory. Fewer parts improve reliability. |
Window latch supports. Roll up door |
Dimensional Stability |
Pultruded components are highly resistant to warping stretch/swelling over a wide range of temperature & stresses |
No permanent deformation under high stress. Close tolerances. |
Spring bumpers. Crossing gate arms, scrubber components |
Safety |
The pultruded components are very strong & safe to work with. They are microbes and insect proof. |
Many gratings suffer from the problem of microbes etc. due to wet or unhygienic working conditions. |
Chemical & pharmaceutical industries |
