Green composites and their manufacturing techniques-a review.

Composites are most attractive and promising material of this century. Their excellent performance in various fields of applications like aerospace, medical, automotive etc. has made fiber reinforced polymer composite materials a great alternative to present alloys or metals. So in this review paper effort has been made to present an overview of different kinds of fibers and their classification w.r.t various FRP composite manufacturing techniques to find the optimized technique for significant applications. As per the literature, hand layup and pultrusion method is being used for making automotive parts, gas tanks, wind turbines, door panels, roofing, ropes and textiles by taking graphene, jute, flax and sisal fibers as reinforcements; filament winding and injection molding process showed good performance while making of armor, fuel cells, satellite parts, window frames and insulation boards by using carbon, jute, coir, rice husk as reinforcements; compression molding holds good in making of automotive, furniture, roofing sheets by considering hemp, kenaf, jute as reinforcements in various matrix. Many more methods like autoclaving, extrusion, resin transfer molding etc. are being used for making various products. So from the withdrawn conclusion it can be said that hand layup method, compression molding and injection molding techniques are significantly being used in making of most of the products of all types of industries. [ABSTRACT FROM AUTHOR]