Compósites
Learning about Composites
Composites are materials for structural shaping, formed by a continuous polymer phase (matrix) and strengthened by a discontinuous phase (fibers) that is physically and chemically added after a polymer cross-linking process (cure). Usually the discontinuous phase is composed of fiberglass, aramid or carbon depending on the end application.

The polymer phase is generally composed of a thermosetting resin, unsaturated polyester type (orthophthalic, terephthalic, isophthalic or biphenolic), dissolved in a reactive solvent, such as styrene, or even an epoxy or ester vinyl resin. Special resins, such as the as phenolic, polyurethane and silicone ones are used in special applications.

While casting these two phases a polymer cross-linking occurs by means of a curing process that unites the two phases providing the final material special properties that define its modern and broad applicability. Lightness, flexibility, durability, resilience and adaptability are some of the properties that ensure composites the title of a product of the future. Engineers and technicians more and more use composites as a solution to their engineering projects. United States, Japan, Canada, Europe and Brazil have in composites a booming market. As the Parisians use to say: "Les composites ont les vents en poupe".

Light and easy to transport
Due to the specific weight of resins and fiber reinforcements the products made from composites have a low specific weight. It is due to this and other characteristic properties of composite materials that they are widely used in the aerospace, shipbuilding and automobile sectors, among others.

Chemical resistance
Composites show exceptional chemical inertia, which allows its use in a wide range of chemically aggressive environments. Furthermore, specific resins and special additives are available to technicians to provide applications that require properties beyond the usual ones.

Storm Resistant
Humidity, wind, sun and temperature oscillations have little harmful effects on composites. Also, when unusual features are required, such as additives for UV protection and anti-dust agents, special resins are widely used.

Architectural Flexibility
Composites have a great advantage over other structural materials because molds with complex shapes are easily adaptable to the processes in use. Curves, different forms, architectural details from the composite materials companies.

Durability
Due to the composition and the polymer cross-linking formed during the forming process, composite are highly durable.

Easy Maintenance
In addition to their traditional long life, composites need easy and simple techniques for repair and maintenance.

Mechanical Resistance
Due to their characteristics and the variety of combinations that can be made with resins and reinforcement materials, composites have an excellent mechanical resistance that allows their use in applications in the field of aeronautics, shipbuilding, automobile and others.

Tailored
Composites are synonyms of tailored products. Decide for the use of a composite is to have at your disposal the possibility of solving your engineering problems with a tailored product, this is, a product that is manufactured in the right measure and for your exact needs.
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ALMACO - LATIN-AMERICAN ASSOCIATION OF COMPOSITE MATERIALS
Av.Professor Almeida Prado, 532 Prédio 31 - Térreo Sala 1 - Cidade Universitária - CEP: 05508-901 - São Paulo - SP
Tel/Fax: +55 (11) 3719-0098 | E-mail: almaco@almaco.org.br