Recycling an organic-matrix composite material

摘要

The invention is directed to a method for recycling an organic-matrix composite material. The organic-matrix composite material comprises a first component comprising at least one organic matrix polymer and at least one solid second component being compatible with said first component and being structurally different from said first component, wherein said at least one organic polymer has thermosetting properties at room temperature and wherein said polymer comprises thermally reversible cross-links The method of the invention comprises —heating the organic-matrix composite material to a temperature at which at least part of the thermally reversible cross-links cleave and at which temperature the first component as a viscosity of at most 500 Pa·s, as measured by oscillatory measurements on an Anton Paar MCR 301 rheometer using parallel plate geometry; and —separating the at least part of said first component from said second component.

主权项

1. Method for recycling a reinforced organic-matrix composite material, said material comprising a first component comprising at least one organic matrix polymer and at least one solid second component being compatible with said first component and being structurally different from said first component, wherein said at least one organic polymer has thermosetting properties at room temperature, wherein said at least one solid second component is a reinforcing material, wherein said reinforcing material includes reinforcing fibers, and wherein said polymer comprises thermally reversible cross-links, said method comprising
heating the organic-matrix composite material to a temperature 5-75 K above the Tg of the organic matrix polymer at which at least part of the thermally reversible cross-links cleave and at which temperature the organic matrix polymer has a viscosity of at most 500 Pa·s, as measured by oscillatory measurements on an Anton Paar MCR 301 rheometer using parallel plate geometry; separating the at least part of the organic matrix polymer from said reinforcing material; and collecting said separated organic matrix polymer and reinforcing material, wherein said separated organic matrix polymer and reinforcing material are suitable for re-use in their original functions.