Fabric-reinforced composites natural fibre

Numerous research has been conducted which reveal the application of this fiber source as reinforcing material in polymer composites. For instance, it has been used for reinforcement in urea formaldehyde resin-based composite which also suggested that Hibiscus sabdariffa fibre has immense scope in the fabrication of natural fibre reinforced polymer composites for vast number of industrial applications (Singha and Thakur 2008a). The graft copolymeiization of Hibiscus sabdariffa also have been found to be more moisture resistant and also showed better chemical and thermal resistance (Thakur et al. 2011a). 

Polymer composite materials which we investigated on failure occurrence are made on the basis of natural fibres, such as linen, cotton and jute. As the matrix material used epoxy resin R70 with hardener H71 often used for laminating contact while the texture is determined in advance. Jute fabric has a surface density in level 340 g- m , linen fabric 320 g-m and cotton fabric 130 g-m . For each reinforcement three components types have been prepared. Laminates structures with two, four and six layers have been prepared. 

The use of fibres and fabrics as additives to reinforce matrix materials in structures that are often referred to as composites goes back into prehistory, as in the use of straw to reinforce clay bricks. As usual, nature developed such structures first. Examples are wood (cellulosic fibres in a lignin matrix) and bone (collagen fibres in an inorganic matrix). A composite need not be based on fibres - it is a material or product formed by intimate combination of two or more distinct physical phases, so the sh ls of crustaceans (calcium carbonate in a chitin matrix) are composite structures. However, the word composite now commonly brings to mind structures consisting of fibres embedded in a matrix of some other material, whether plastic, ceramic or metal (i.e. fibrous composites), and even tends to be used particularly for structures in which the fibres are laid out in organized fashion before the matrix material is consolidated around them. 

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