| 摘要 |
A method for treating cross-linked ethylene vinyl acetate (EVA)- based polymer materials in order to obtain polymer fragments having a reduced molecular weight. According to the method, after particulate reduction, the polymer materials are incorporated in a solvent, particularly an aromatic and/or halogenated solvent, which can diffuse within and dilate the polymer lattice, and the reaction medium is subjected to a flow of ozone. The method provides controlled cleavage of cross-linked molecules without completely destroying the polymer or distributing the functional groups. The resulting products can be used particularly as texturing agents for asphalt binders or binder-treated aggregates, or as coating binders for granulates. |
