Time-temperature-transformation (TTT) cure diagram for EPY ® epoxy system Summary-Curing reactions of the EPY ® epoxy system (Epidian 6 + TETA) applied for machine foundation chocks were studied to determine time-temperature-transformation (TTT) isothermal cure diagram for this system. Differential scanning calorimetry (DSC) and rotational viscometry were used to obtain the experimental data. Empirical models based on dependence between conversion degree and glass transition temperature, as well as reckoning of times to gelation and times to vitrification were used and compared to the experimental data. The investigation was made in the temperature range 23-100 o C, which is considered to be optimum for the isothermal curing of the epoxy system studied. The experimental results obtained in this range are in fair agreement with the calculations. The presented curing diagram provides a considerable insight into the thermo-mechanical behavior of the EPY ® system during its curing and can be a useful tool for analyzing and designing manufacturing processes of foundation chocks suitable for various practical applications.

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The paper presents the current volume of international production and global markets of carbon fiber reinforced polymer composites, also regarding the potential development trends. Examples were provided on how to effectively recycle carbon fiber reinforced polymer composites. Legally binding legislation in the EU on polymer composite recycling was given.

The paper presents some examples of new technological solutions for the recovery and re-use of recycled carbon fiber in automotive and railway industries, as well as in aviation and wind turbine constructions. The new technologies of fiber recovery that are described can enable the mass-scale use of recycled carbon fiber in the future.

Mo¿liwooeci recyklingu i utylizacji materia³ów polimerowych i wyrobów kompozytowychStreszczenie -W artykule przedstawiono sposoby recyklingu kompozytów polimerowych w Europie i w Polsce, ze szczególnym uwzglêdnieniem kompozytów duroplastycznych wzmacnianych w³óknami szklanymi lub wêglowymi. Omówiono sposoby rozwi¹zywania problemów zwi¹zanych z recyklingiem kompozytów oraz regulacje prawne w tym zakresie, obowi¹zuj¹ce w Unii Europejskiej. S³owa kluczowe: kompozyty polimerowe, duroplasty, recykling, utylizacja. POSSIBILITIES OF RECYCLING AND UTYLISATION OF THE POLYMERIC MATERIALS AND COMPOSITE PRODUCTSSummary -The paper describes the methods of recycling of polymer composites in Europe and Poland, with a particular focus on duroplastic composite materials reinforced with glass or carbon fibres. The ways to solve the problems connected with composite recycling as well as the existing European Community regulations in this area have been discussed.