ABSTRACT
The name polymer and its applications have now reached the life style of the masses. Polymer is a generic name with its main permanent members being elastomers, plastics, and fibers. When considering materials for load bearing applications, designers are increasingly examining the advantages of using plastic materials, both thermosets and thermoplastics. The advantages of thermoplastics over others are their low specific gravities and low cost of fabrication, particularly when using the injection molding technique. The term composite is used in material science to mean a material made up of a matrix substance containing reinforcing agents. By definition, composite is a material composed of two or more distinct components. Composites are divided into two basic forms, composite materials and composite structure. Composite materials are composed of reinforcing structures surrounded by a continuous matrix, whereas composite structure exhibits a discontinuous matrix.
