Pultrusion

Pultrusion is a continuous process for manufacture of composite materials with constant cross-section. Reinforced fibers are pulled through a resin, possibly followed by a separate performing system, and into a heated die, where the resin undergoes polymerization.

Application:-

  • In agriculture and chemical industry for manufacturing of chemically resistant to aggressive media slatted floors with enhanced strength characteristics used in the construction of livestock facilities, chemical plants, etc.;
  • In construction industry for the production of glass-fibre reinforcement, profiles, carcasses, stiffening bars for PVC-windows, etc.;
  • In aerospace industry for manufacturing of structure components of aircraft;
  • In sports and tourism industry for manufacturing of equipment having enhanced strength properties: skis, ski poles, tent and hovel constructions, etc.;
  • In electrical power engineering for manufacturing of dielectric structures, fibreglass rods used in composite insulators and as supporting structures for elements of signalling blocks, and fibreglass profiles used in manufacturing of transformers and electric motors;
  • In commercial production, using grains of long-fibre moulding material (LLM) as a raw material for subsequent manufacturing of structures and products with enhanced strength and chemical properties;
  • In many other industries and plants, using mechanisms, structures and materials, which meet high standards of chemical, dielectric and strength stability.

Two types of Pultrusion are :-

(i) Glass Polyester Laminate Angles & Channels :-

Grade GPO-3 Angles and Channels are moulded composite shapes that offer the designer choices of structural insulating members whose characteristics combine good electrical properties, high strength to weight ratio, and flame and track resistance

Product :-

SmithFabri - Glass Polyester Laminates (GPO3) angles and channels are moulded composite shapes that offer the designer choices of structural insulating members whose characteristics combine good electrical properties, high strength to weight ratio, flame and track resistance.

Fabrication :-

SmithTherm is manufacturing all kinds of angles and channels through Pultrusion process as per requirements and as according to the drawings and specification provided by customers.

Key Characteristics Units Typical Values
Standard Colour ⁢ Red
Tensile Strength psi 15,000
Tensile Modulus psi x 106 1.7
Flexural Strength psi 25,000
Flexural strength, 130 °C psi 13,000
Flexural Modulus psi x 106 1.2
Compressive strength, Flatwise – Edgewise – psi psi 42,000 20,000
Shear strength psi 14,500
IZOD impact strength, notched ft.lb/in. 9.6
Water absorption % by wt. 0.3
Specific gravity - 1.8
Dielectric strength, perpendicular – Parallel – Vpm kV 200 45
Arc Resistance Seconds 185
Inclined plane track resistance Minutes 500+
Thermal Conductivity BTU/hr./ft./in./°F 1.9
Electrical Temperature °C 130
Mechanical Temperature °C 160
Flammability Class V-0

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