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E. Hałasa


The effect of fillers on water absorption by cast urethane elastomers (CUE)


Polimery 1984, No 7, 278



DOI: dx.doi.org/10.14314/polimery.1984.278


Summary


The effect of the presence and amount of a mineral filler (zeolite 4A, silica flour, arsil) on the water absorption at 20°C by CUE based on polyetherols — copolymers of pro­pylene oxide and ethylene oxide — has been investigated. It has been demonstrated that water absorption of filled CUE increases continuously during about six months, whereas water absorption of pure CUE reaches during that time its equilibrium value. The considerable Increase in water absorp­tion by filled CUE in the second stage of the process, parti­cularly visible in the case of zeolite 4A, is probably due to disturbances in adhesion of filler to the CUE matrix.


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