Composite material reinforcement materials. Another important factor is the gross quantity of material to be produced. Large quantities can be used to justify high capital expenditures for rapid and automated manufacturing technology. Small production quantities are accommodated with lower capital expenditures but higher labour and tooling costs at a correspondingly slower rate. Many commercially produced composites use a polymer matrix material often called a resin solution. There are many different polymers available depending upon the starting raw ingredients. There are several broad categories, each with numerous variations. The most common are known as polyester, vinyl ester, epoxy, phenolic, polyimide, polyamide, polypropylene, PEEK,
National Centre for the Evaluation of Photoprotection increasing problems of degradation (yellowing – bleaching - physical properties loss … ). CNEP is today still associated with LPMM but also with many small, medium and world size companies working in various domains of polymer applications. More of 500 failure cases are examined each year by CNEP and expertise on the last twenty years is covering more of 100.000 different polymer formulations. Progressively with the development of sophisticated analytical tools, CNEP was extending its activity to the direct physicochemical analysis of any failure in polymer material, not only derived from ageing (polymer degradation). All researches are made under contract