Fiberglass Cable Tray & Channel
The Pultrusion Process The pultruded structural component is made by reinforcing a polymer resin (usually polyester or vinyl ester resin) with multiple strands of glass filament and alternating layers of glass mat. The glass is drawn through the liquid resin, which coats and saturates the fibers. The combination of resin and glass is then continuously guided and pulled (pultruded) through a heated die that determines the shape of the component. In the die, the resin is cured to form a permanent, reinforced part which can be cut to a specific length. Since the hardened fiberglass pultrusion is reinforced with an internal arrangement of permanently bonded continuous glass fibers, it possesses great strength. In addition to strength, pultruded fiberglass components exhibit exceptional corrosion resistance. This attribute makes fiberglass the material of choice for many harsh industrial applications. Construction and Physical Properties
Resin Systems Polyester and vinyl ester resin systems are available. The vinyl ester resin system is somewhat stronger and is applied in severe corrosive applications. Both resin systems are flame retardant, conforming to ASTM E84, Class 1 flame rating and are self extinguishing per the requirements of UL94V-0. Consult the corrosion resistance guide to determine the correct resin system for your application.
Typical Properties
Typical Value Test Method
Typical Value Direction Mechanical Longitudinal Transverse Longitudinal Transverse Longitudinal Transverse Longitudinal Transverse Longitudinal Transverse Longitudinal Transverse Longitudinal or Transverse Longitudinal Transverse Perpendicular
Unit
Polyester
Vinyl Ester
ASTM D-638 ASTM D-638 ASTM D-638 ASTM D-638 ASTM D-695 ASTM D-695 ASTM D-695 ASTM D-695 ASTM D-790 ASTM D-790 ASTM D-790 ASTM D-790
PSI PSI PSI PSI PSI PSI PSI PSI PSI PSI PSI PSI PSI PSI
30,000
35,000 10,000 3.0 x 10 6 1.0 x 10 6 35,000 20,000 2.5 x 10 6 1.2 x 10 6 35,000 14,000 2.0 x 10 6 1.0 x 10 6
Ultimate Tensile Strength
7,000
2.5 x 10 6 0.8 x10 6 30,000 15,000 2.5 x 10 6 1.0 x 10 6 30,000 10,000 1.6 x 10 6 0.8 x 10 6
Tensile Modulus
Ultimate Compressive Strength
Compressive Modulus
Ultimate Flexural Strength
Flexural Modulus
5,500 5,500
7,000 6,000
Shear Strength Short Beam
ASTM D-2344
ft.-lb./in. ft.-lb./in.
25
30
Impact Strength-lzod
ASTM D-256
4
5
Hardness-Barcol
ASTM D-2583
50
50
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