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- W1990642230 abstract "Graft products of chlorinated PVC with styrene were prepared by a radiation-grafting method using 60Co-γ-ray source. The aim was the preparation of foamed plastics by applying the traditional polystyrene foaming method. Two types of chlorinated PVC (PVCC) were used: radiation-chlorinated PVC, made by the fluidized-bed chlorination process, and solution-chlorinated PVC. Both of the PVCC types were grafted with styrene without any difficulty. The required particle size for an effective foaming was obtained by extrusion and granulation of the grafted powder. The foaming processes are quite different: graft products on the basis of solution-chlorinated PVC lead to plastic foams with a density lower than 0.1 g/cm3 whereas those prepared from solid-chlorinated PVC result in foams with much higher density (Friese, K, Tannert, F, 1990. Proceedings of the 7th Tihany Symposium on Radiation Chemistry, p. 367). Solid-chlorinated PVC is foamable with pentane, after compounding it with polymeric modifiers. Grafting of granules on the basis of such compounds increases the content of pentane, as well as the foaming rate. The foamed graft polymers are non-inflammable and self-extinguishing." @default.
- W1990642230 created "2016-06-24" @default.
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- W1990642230 date "1999-06-01" @default.
- W1990642230 modified "2023-10-16" @default.
- W1990642230 title "Radiation-induced grafting of chlorinated PVC for preparation of plastic foams" @default.
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- W1990642230 doi "https://doi.org/10.1016/s0969-806x(98)00307-7" @default.
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