At present, the Institute of Chemistry of the National Autonomous University of Mexico has made new progress in the recycling of waste polystyrene foam. It successfully used a compound solvent to restore it to its original ball shape and is preparing for the next commercial promotion. .
According to the researchers, the process flow is: the collected polystyrene foam is dissolved in a solvent, and the resulting mixed solution is dropped into the water, and the polystyrene foam dissolved therein will be polymerized again. Clean and easy to separate original balls. These beads are identical in performance to the nascent beads after the foaming treatment and can be used immediately for the compression molding.
At present, the world mainly uses “melting granulation method†to recover foam plastics, that is, it is melted and pressed into filaments at high temperature, and then cut into recycled plastic balls. However, the performance of the recycled beads is obviously better than that of new ones. Ball bad.
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