October 12, 2021

Fiber Reinforced Polymer and Fiber Reinforced Plastic

A fibre-reinforced polymer (FRP) composite is defined as a polymer reinforced with fibres. It represents a group of materials that belong to the category known as composites.

The main function of fibre reinforcement is to carry, load and provide strength and stiffness along the fibres and in one direction. The use of FRP in engineering applications has enabled engineers to achieve significant functional, safety and economic successes in construction due to its mechanical properties. WEITONG introduces you to some of the types of FRP.

Glass Fibre Reinforced Polymer (GFRP)

Glass fibres are basically a mixture of silica sand, limestone, folic acid and other trace components. The mixture is heated until it melts at approximately 1260°C. The molten glass is then allowed to flow through the platinum.

The molten glass is then allowed to flow through the fine holes in the platinum plate. The glass filaments are cooled, gathered and wound. The fibres are stretched to increase directional strength. The fibres are then woven into various forms for use in composites.

Based on aluminium-lime borosilicate composites, fibres produced from glass are considered to be the main reinforcement for polymer-based composites because of their high electrical insulation properties, low sensitivity to moisture and high mechanical properties.

Glass is usually a good impact resistant fibre, but is heavier than carbon or aramid. Glass fibres have excellent properties in some forms that are equal to or better than steel.

FRP Washing Tower

Carbon Fibre Reinforced Polymers (CFRP)

Carbon fibres have a high modulus of elasticity, 200-800 GPa, and an ultimate elongation of 0.3-2.5%, where lower elongation corresponds to higher stiffness, and vice versa.

Carbon fibres do not absorb water and are resistant to many chemical solutions. They have excellent fatigue resistance and will neither corrode nor show any creep or relaxation.

Aramid fibre reinforced polymers (AFRP)

Aramid is short for aromatic polyamide. Aramids have high fracture energy and are therefore used in helmets and bullet-proof vests. They are sensitive to heat, humidity and UV radiation and are therefore not widely used in civil engineering applications. Finally, aramid fibres do have problems with relaxation and stress corrosion.

FRP Composite Pipe

When we talk about FRP pipes, we often mean fiber reinforced plastic. The FRP Composite Pipe is a non-metallic composite material product with strong tensile strength and higher strength than steel. It has excellent chemical resistance. It exhibits superiority over other materials when conveying corrosive, and long service life. You can call our experts today and get the quote.