Why thermoplastic composites?
Conventional composites have a thermoset resin matrix such as epoxy or polyester. Thermoset resins are inherently brittle, and are formed by a chemical reaction and as such cannot be remelted or reformed once set. In contrast, thermoplastics, such as polythene, nylon, and polypropylene, are tough and can be remelted. Thermoplastic composites possess the same fibre dominated properties as conventional composites but with the following benefits: • The fibre volume fraction can be varied across the section from 0 to ~65%- this is not possible with conventional technology • greater component robustness due to the tougher matrix • improved environmental tolerance properties • the ability to post form and weld the material • raw materials are cheaper and have a much longer shelf life than conventional composites • potential for rapid process speeds • Eco-friendly composites-use of recycled/reclaim, no use of solvents and are recyclable • greater variety of matrix/fibre combinations and fibre
