Chemistry, asked by CapAllan9118, 1 year ago

How FRPs are different compared to normal composite materials?

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Answered by ridashaikh
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According the improvement in engineering and production field, the changes in material subject would play a vital role with any changes in design, structure, performance or efficiency of the product. In some cases, single specification of a material would not satisfy the needs of product. Therefore, the development way in engineering materials has been combining two or more materials inorder to gain benefits of each one. Result of this, the composite materials have been borned.

The definiton of a “composite” is an engineering material consisting of two or more dissimilar components in it. These dissimilar components are usually classed as the matrix and the reinforcement. The matrix can be plastic (or “polymer”), metal or ceramic and the reinforcement is either particulate or fibre based.

The main role of fibres is providing strength and stiffness to the material. But the fibre alone is brittle (ex: glass). Therefore, the fibres are encased in a coating of polymer materials. Polymer matrix holds the fibres in their position and transfers the loads between the fibres. It also contributes to the inter-laminar shear strength.

The fibres used in composite are as follows; E-glass, S-glass, Quartz, Aramid (Kevlar 49), Spectra 1000, Carbon (AS4), Carbon (IM-7), Graphite (P-100), and Boron. Polyesters, Vinyl Esters, Epoxies, Bismaleimides, Polyimides, and Phenolics are the polymers used. The reason for each polymer has different chemical and physical properties, it creates different composite structure.

Fibre reinforced plastics (as known FRP in industry) are having specification of high strength fibres including polymer matrix. FRP has different types and generally it is known the type of fibre in industry. Fibre of the composite could be glass, carbon, aramid etc. and the plastics are usually a thermosetting resin such as polyester, vinyl ester or epoxy. It is widely used instead of metal and wood. (Example : Aircraft usage)

•Fibreglass or GRP is a composite material made out of glass fibres and uses polyester, vinyl, or epoxy as the polymer. GRP is used different type of applications such as producing gliders, boats, bathtubs, pipes and fittings, tanks.

In a nutshell, if the fibre of composite is glass, it is known as GRP( Glass reinforced plastic). Fibreglass(GRP) is one type of FRP

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