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Pultruded Profile

Pultruded profiles,also be called Pultruded Structural Profiles, are the backbone of modern industrial applications, offering unparalleled strength, durability, and versatility. Manufactured through the pultrusion process, these profiles are made by pulling continuous fibers through a resin, followed by a heated die to form a continuous, high-strength profile.

Advantages of Pultruded Profiles:

  • Strength-to-Weight Ratio: Pultruded profiles offer superior strength while remaining lightweight, making them ideal for structural applications where weight is a concern.
  • Corrosion Resistance: The materials used in pultruded profiles resist corrosion from chemicals and environmental elements, reducing maintenance costs and increasing longevity.
  • Design Flexibility: The pultrusion process allows for a variety of shapes and sizes, accommodating complex design requirements.
  • Thermal Insulation: Pultruded profiles have excellent insulating properties, which can be crucial in electrical and thermal applications.
  • Cost-Effectiveness: With low raw material waste and the ability to integrate color and UV inhibitors, pultruded profiles are a cost-effective solution for many industries.

Pultruded profiles are used in a wide range of industries, including construction, electrical utilities, infrastructure, transportation, and marine environments. Common applications include beams, decking, handrails, tool handles, cable trays, and more.

Pultruded Tube

Pultruded tubes offer high strength, lightweight, and corrosion resistance. Ideal for structural, electrical, and industrial applications, they come in various sizes and are durable and maintenance-free.

Pultruded Rod

Pultruded rods are strong, stiff, and lightweight, designed for demanding applications such as reinforcing elements, tent poles, and tool handles. They resist corrosion and are available in multiple diameters.

Square Tube

Pultruded square tubes are versatile profiles with uniform strength, used in frames, supports, and truss structures. They're durable, lightweight, and resist environmental wear.

Pultruded Stripe

Pultruded stripes are flat, narrow profiles used for reinforcement, edging, or as structural components in various applications. They offer rigidity, durability, and easy integration into larger systems.

Pultruded Angles

Pultruded angles are L-shaped profiles used for bracing and framing, combining high strength with rigidity and corrosion resistance, suitable for a range of structural applications.

C Channel

Pultruded C channels feature a boxy, open-sided shape providing structural support and stability, ideal for construction, framing, and mounting applications with their lightweight and corrosion-resistant properties.

I beam

Pultruded I beams are strong, stiff profiles used in construction and engineering for load-bearing applications, offering a high strength-to-weight ratio and resistance to environmental factors.

Dog Bone

Pultruded dog bone profiles, with their distinctive narrow-edged shape, are primarily used for electrical insulation applications, providing high mechanical strength and rigidity in various electrical components.

Stair Trends

Pultruded stair treads are designed for durability and safety, featuring a non-slip surface and high load-bearing capacity, ideal for industrial and commercial stair applications.

Main Parameter Of Pultruded Profile

Physical Test Method Unit Value LW/CW
E23 E17
Tensile Strength ASTM D-638 MPa 300/55 200/45
Tensile Modulus ASTM D-638 GPa 23/7 17/5
Compressive Strength ASTM D-695 MPa 250/70 200/70
Compressive Modulus ASTM D-695 GPa 20/7 15/5
Flexural Strength ASTM D-790 MPa 300/100 200/70
Full Section EN13706-2 GPa 23 17
Interlaminar Shear Strength ASTM D-2344 MPa 25 20
Density ASTM D-792 g/cm3 1.72—1.94
Barcol Hardness ASTM D-495 >45
Water Absorption ASTM D-570 % max 1
Coefficient of Thermal Expansion ASTM D-696 10-8in/in/℃ 8
Flammiability Classification UL94 V0(32)
Tunnel Test E-84 20
NBS Smoke Chamber ASTM E662 650
Flammiability Extinguishing ASTM D-635 Self extinguishing
Fire propagetion BS476 Part 6 I<12, i1<6
Surface flame spread BS476 Part 7 Class 1/2
Operation temperature +80 to -100
UL Thermal index Generic 130
Electrical Properties  
Arc Resistance,LW ASTM D-495 seconds 120
Dielectric Strength,LW ASTM D-149 kV/in 35
Dielectric Strength,PF ASTM D-149 Volts/mil 200
Dielectric Constant,PF ASTM D-150 @60hz 5

Raw Material For Pultruded Profile

Aluminum Trihydrate (ATH) in pultrusion is often used as a fire retardant and smoke suppressant. Its incorporation into the resin matrix enhances the fire-resistant properties of pultruded profiles, making them safer and more durable in applications where fire resistance is crucial.
Release Agent
Release Agent
In the pultrusion process, release agents are crucial for ensuring the smooth extraction of the final composite product from the mold. These agents, typically waxes or silicones, are applied to the mold surface to prevent the composite material from sticking, thereby facilitating a cleaner release and maintaining the integrity of the product's surface finish.
PE Powder
PE Powder
In the pultrusion process, PE (Polyethylene) powder can be used in thermoplastic pultrusion, where it is either used for powder impregnation of glass fibers or combined with sheet material of the thermoplastic matrix. This method enhances the properties of the final composite, contributing to its strength, durability, and application versatility.
In the pultrusion process, TBPB (Tert-Butyl Peroxybenzoate) is commonly used as a catalyst for curing polyester and vinyl ester resins, providing controlled and consistent curing essential for producing high-quality composite materials.
What are the disadvantages of using pultruded profiles?

The pultrusion process typically can only produce profiles with the same cross-sectional shape.

Can pultruded profiles be customized to meet specific requirements?

Yes, pultruded profiles can be customized to meet specific requirements. The customization generally starts with the selection of resin, such as polyester, vinyl ester, epoxy resin, or phenolic resin. Then, the appropriate fiber is chosen, such as fiberglass or carbon fiber. Sometimes, fiberglass mat is added to enhance the transverse strength. Finally, additives such as UV inhibitors or colorants can be added to make the profile suitable for specific environments and applications.

What is the cost of customizing pultruded profiles

The cost of customizing pultruded profiles can vary greatly due to various factors. These include the choice of materials and whether additives or fillers are needed to meet the usage conditions. Additionally, the precision of the product and the quantity ordered can affect the cost. Surface treatments such as cutting, painting, or drilling can also impact the overall price.

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