Creep Tests Of Polyamide 6 Composites Reinforced With Fibre Glass
Dariusz Kwiatkowski, Józef Koszkul Politechnika Częstochowska, Katedra Przetwórstwa Tworzyw Sztucznych i Zarządzania Produkcją, al. Armii Krajowej 19c, 42-200 Częstochowa
Annals 1 No. 1, 2001 pages 42-45
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abstract In the paper the influence of the filler content on the creep function during bending of the polyamide composites was analysed. Non-linear polymer creep description, proposed by the authors [1], was used in order to approximate the experimential data. The dependence between deformation ε stress σ and observation time t is given Two polyamide 6 composites reinforced with fibre glass were taken under examination and the results were compared with the pure polyamide 6 being the matrix of the composite. The specimens were subjected to the bending stress for time t = 300 hours. For the creep tests the cubicoid specimens of 150x10x5 mm were used. The creep tests were performed on the test stand which had been designed and made at the Katedra Przetwórstwa Tworzyw Sztucznych i Zarządzania Produkcją. The test stand allowed to perform the creep process durnig pure bending at the different stress levels: 5, 10, 15 MPa. The factors a1, b1, a2, b2, ω 1, ω 2 occuring in the equation as well as the exponential fractional function parameters α1 , ν 1 i α 2, ν 2 were calculated with the specially elaborated numerical procedure.