The polymer composites
About polymer composites
Polymer compsites are materials of todays and more tomorrows because it meets individual and social needs in a number of areas and their application is spreading rapidly around the world. Thanks to its exceptional characteristics these materials are incresingly crowd out the conventional materials in different applications, at the same time generating new, till now unknown applications.
Polymer comoposite are relatively young materials, with whose production began by the end of thirtieth years of last centuries. In general, composite materials can be defined as materials obtained by merging two or more materials with different characteristics. The goal of merging is to obtain the material with such characteristics that any material has no by itself.
Before several decades polymer composites had been the unavailable curiosity, intended only for space and military programs. Today they are more accessible materials and products from these materials are more numerous. The applications of polymers and polymer composites are constantly growing, and most often they use for the making parts of vehicle and machines, aircrafts, boats, helicopters, cars (the armor of "Formula 1" and motorcycles), springs, suspensions, spindles of machine tools, for the sports equipment: masts and sailing boats, windsurfers, skis, bicycle frames, golf sticks, bow shooting, fishing rod, then in the medicine: external fixators, prostheses, walking aids, and also for the military equipment such as helmets and protective waistcoats, weapon parts etc., and in recent years in the field of civil engineerings, high-rise building, low-rise construction, especially in construction new structures and repairs already performed structures.
Advantages of these materials are the saving on the total veight of product (indirectly on the fuel consumption nad environmental acceptability), but also performances. Specifically, compared to other materials, polymer composites have the low weight with the great strength (parts made e.g. of carbon fibres are about 5 times stronger than those which made of steel, and according to the volume they cheaper), stability of form, steadiness towards atmospheric influences, chemical steadiness, steadiness towards the warmth, high dynamic resistance, durability. In this sense, their application enables significant savings in costs of investment maintenance. Potential buyer e.g. aircrafts, after few thousand flight hours, with the regular maintenance, must change only the engine. There is no the rust, and the hull of aircrafts, professionals claim, has the lifelong guarantee. Finally, composite materials are bringing the save in terms of production costs, because they allow the easier processing, and hence the lower energy consumption.