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 Pultrusions are:-

Glass Polyester Laminate Angles & Channels Glass Polyester Solid Rod & Bar Products

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 Mechanical Temperature	°C	130° 160
Flammability	Class	V-0

ii) Glass Polyester Solid Rod and Bar Products :-

Glass Polyester Solid Bar & Rod Products are fibre glass-reinforced thermoset polyester shapes that exhibit properties desirable for a wide range of structural and electrical applications. Common shapes include Rounds, Squares, and "Dogbones."

Product :-

SmithFabri^� Glass Polyester Solid Bar & Rod Products are fiberglass-reinforced thermoset polyester shapes that exhibit properties desirable for a wide range of structural and electrical applications. Common shapes include Rounds, Squares, and "Dogbones."

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	155° Polyester	220° Polyester
Standard Colour		White	Grey
Tensile Strength	psi (MPa)	70,000 (483)	70,000 (483)
Flexural Strength, Flatwise – Edgewise –	psi (MPa)	25000 (172) 15000 (103)	35,000 (241) 20,000 (138)
Flexural Modulus, Flatwise – Edgewise –	ksi (MPa)	2 x 106 (13,790) 1.5 x 106 (10,342)

Compressive strength, Flatwise – Edgewise –	psi (MPa) psi (MPa)	20,000 (138) 40,000 (276)	20,000 (138) 40,000 (276)
IZOD impact strength, notched	ft.lb/in.	50	50
Water absorption	%	0.3	0.3
Specific gravity	-	1.95	1.95
Dielectric strength, perpendicular – Parallel –	Vpm, kV/mm kV/in.	300 (11.7) 50	300 (11.7) 50
Arc Resistance	Seconds	100	120
Thermal Conductivity	BTU/hr./ft./in./°F	4	4
Weight loss, 200 hrs in 150° C 200 hrs in 200° C	%	1.0 6.1	0.17 0.75
Extractables in Freon 22	%	1.05	0.19