Gumiabroncs-őrlet tartalmú termoplasztikus elasztomerek fejlesztése
Development of ground tire rubber-containing thermoplastic vulcanizates
Keywords:
Thermoplastic elastomers, ground tire rubber, devulcanization, dynamic vulcanization, recycling, /, Termoplasztikus elasztomerek, gumiabroncs-őrlet, devulkanizáció, dinamikus vulkanizáció, újrahasznosításAbstract
The aim of the research was to develop thermoplastic elastomers containing a high amount of ground tire rubber. We used polypropylene matrices with different flowabilities and investigated the effect of the amount and particle size of ground tire rubber. In addition, our research has also explored the potential of devulcanization: devulcanized ground tire rubber was compounded with the thermoplastic polymer phase both on its and by dynamic vulcanization. We showed that the more viscous polypropylene resulted in higher elongation at break and that rubbery behavior dominated as the fraction of ground tire rubber increased.
Kivonat
A kutatás célja olyan termoplasztikus elasztomerek fejlesztése, amelyek nagy mennyiségű gumiabroncs-őrletet tartalmaznak. Ehhez többféle folyóképességű polipropilén mátrixot alkalmaztunk, és vizsgáltuk a gumiabroncs-őrlet mennyiségének és szemcseméretének hatását. Emellett kutatásunkban a devulkanizáció által nyújtott lehetőségekre is kitértünk: devulkanizált gumiabroncs-őrletet önmagában, valamint dinamikusan vulkanizálva is kompaundáltuk a termoplasztikus polimer fázissal. Kimutattuk, hogy az alacsony folyóképességű polipropilén eredményezi a nagyobb szakadási nyúlást, valamint a gumiabroncs-őrlet tömegarányának növelésével a gumiszerű viselkedés dominált.
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